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Sparking Interest in New Firework Colors

Sparklers are a favorite for holidays and celebratory events across the world, providing dramatic and eye-catching bursts of light. While their flames can span the rainbow, the actual sparks that fly and branch out are traditionally limited to dark red, gold, or white light. But chemists are now uncovering new ways to expand the pyrotechnic color palette using rare-earth metals.

Read the Full Paper

Sparks are tiny pieces of materials that, when heated to a certain temperature, produce visible light. Long-flying sparks formed from hot, incandescent metal particles are essential components of sparklers, fireworks, and other pyrotechnic spectacles—however, these traditional metallic sparks may leave something to be desired due to their limited color range. This is because the color of the spark is controlled exclusively by the temperature of the metal heated by surface combustion, a phenomenon known as black or gray body radiation.

In recent decades, studies have demonstrated the potential for rare-earth metals to be promising agents for more colorful pyrotechnic displays and spark variety due to their low boiling points and ability to burn in the vapor phase. Unfortunately, the metals are consumed very quickly during vapor-phase combustion, resulting in only brief flashes of light rather than the desired effect of long, branching sparks.

But now, a recent study published in ACS Omega reports that rare-earth metals in alloy powder form can produce flashes that shift from gold to green while maintaining continuous branching and sparking effects. This study is thought to be the first investigation into how such alloys expand spark colors beyond the black body limit, as well as their impact on branching behavior.

Overall, the researchers studied 11 commercial and synthesized alloys plus six rare-earth elements. They were able to achieve deep green spark segments based on eutectic ytterbium–zinc (Yb–Zn) and ytterbium–copper (Yb–Cu) powders. Once ignited, Yb–Cu burst into a shower of both gold and green sparks. In contrast to pure Yb, the Yb–Cu sparks successfully traveled outside of the flame, reaching significant lengths of 3–6 cm. The resulting effects appeared as a mixture of surface combustion (gold), vapor combustion (green flashes), and color-changing sparks with deep green and golden stages, repeating several times over.

In addition to color, the researchers demonstrated that rare-earth metal alloys could influence the branching behavior of sparks. Among the various candidates that were analyzed, the neodymium-iron-boron alloy Nd2Fe14B proved to be the most ideal and practical due to its stable phase and ability to produce bright, continuous branching effects. 

The authors conclude that binary metal alloys could one day play a vital role in enhancing the color variety and spark behavior of handheld sparklers and other pyrotechnic devices. However, further research and intensive safety testing must be conducted to ensure commercial viability.

So, as you stand under your next fireworks show or trace shapes in the cold night air with a sparkler, spare a thought for the chemists working to light up the skies and add color to our celebrations.  

To see the research in action, watch the video below created by the ACS Science Communications team:

Read the Original Article

Read the Full Press Release

Learn more about the chemistry of pyrotechnics in ACS journals:

  1. Ritchie, T. et al. Evolution of Medieval Gunpowder: Thermodynamic and Combustion Analysis. ACS Omega 2021, 6, 35, 22848–22856
  2. Dong, W. et al. Multidimensional Energetic Coordination Polymers as Flame Colorants: Intriguing Architecture and Excellent Performance. Cryst. Growth Des. 2022, 22, 9, 5449–5458
  3. Cao, W. et al. Access to Green Pyrotechnic Compositions via Constructing Coordination Polymers: A New Approach to the Application of 3,4-Dinitropyrazole. ACS Appl. Mater. Interfaces 2022, 14, 28, 32084–32095
  4. Zeman, O. Diketopyrrolopyrrole─A Greener Alternative for Pyrotechnic Smoke Compositions. ACS Sustainable Chem. Eng. 2022, 10, 14, 4788–4791
  5. Fan, S. et al. Are Environmentally Friendly Fireworks Really “Green” for Air Quality? A Study from the 2019 National Day Fireworks Display in Shenzhen. Environ. Sci. Technol. 2021, 55, 6, 3520–3529

Need a Circuit? Just Print One

This article is based on a recent paper published in ACS Applied Materials & Interfaces, “Thermal Transfer-Enabled Rapid Printing of Liquid Metal Circuits on Multiple Substrates.”

Read the full paper here

As electronics evolve, their component parts—including circuits—need to as well. New research published in ACS Applied Materials & Interfaces describes a method to print functional liquid circuitry on all manner of objects and surfaces—from smooth ceramics to the dimpled skin of an orange—using a standard laser printer.

Flexible Circuitry: Finding a Solution that Sticks

Most circuit boards used today are built with rigid materials, but as electronics become more widely incorporated in malleable products such as items of clothing or soft robots, there is now a greater need for flexible, low-cost circuitry. Liquid metal circuits have shown to be a promising solution, but current printing methods have proven to be both expensive and complex, rendering them impractical for large-scale production. Xian Huang and colleagues at Tanjin University in China began exploring a new printing approach in hopes of developing a cheaper, more efficient way of fabricating liquid metal circuits for use across many different materials.

While liquid metals have been used for a variety of applications in flexible materials and electronics, their high surface tension often leads to pattern distortion and weaker adhesive properties—making it difficult to successfully print directly on curved or uneven surfaces. To improve this process, the researchers presented a more universal technique for creating circuit patterns on thermal transfer paper using a standard desktop laser printer and Cu−Ag-EGaIn—a liquid metal obtained by melting silver−copper microparticles in a gallium−indium eutectic alloy.

Turning Any Surface Into a Circuit Board

Similar to iron-on decals for transferring photos or images onto clothing, the carbon-based toner was laid down by the laser printer and then heat-transferred to a pane of glass. The toner patterns roughened the glass and created a hydrophobic gap of air between the carbon and the Cu−Ag-EGaIn liquid metal, allowing only the exposed parts of the surface to stick to the electronic ink-based pattern when the liquid metal was brushed on top. The resulting circuit could then be mounted directly onto smooth surfaces, or, after applying a flexible polymer coating, onto rougher materials such as the bumpy skin of an orange.

Regardless of how they were attached, the simple electronics tested in the lab—which included LED displays, sound sensors, and radio-frequency identification (RFID) circuits—all functioned as intended on their underlying surfaces. These included wettable substrates such as thermoplastic polyurethane and glass as well as low-adhesion materials such as knitted fabric, paper, wood, and fruit. By demonstrating a cheaper, easier method of producing liquid metal circuits, this new technology has great potential to expand flexible circuitry across applications such as consumer electronics, health monitoring, wearable devices, and more.

Watch the video around this research created by the ACS Science Communications team:

Read the Full Press Release

Read the Original Article

Discover more research on liquid metals in ACS journals

  1. Kim, S. et al. Liquid-Metal-Coated Magnetic Particles toward Writable, Nonwettable, Stretchable Circuit Boards, and Directly Assembled Liquid Metal-Elastomer Conductors. ACS Appl. Mater. Interfaces 2022, 14, 32, 37110–37119
  2. Huang, C. et al. Soft and Stretchable Liquid Metal–Elastomer Composite for Wearable Electronics. ACS Appl. Mater. Interfaces 2022, 14, 33, 38196–38204
  3. Bhuyan, P. et al. Soft and Stretchable Liquid Metal Composites with Shape Memory and Healable Conductivity. ACS Appl. Mater. Interfaces 2021, 13, 24, 28916–28924
  4. Lopes, P.A. et al. Bi-Phasic Ag–In–Ga-Embedded Elastomer Inks for Digitally Printed, Ultra-Stretchable, Multi-layer Electronics. ACS Appl. Mater. Interfaces 2021, 13, 12, 14552–14561
  5. Choi, D.Y. et al. Highly Stretchable, Hysteresis-Free Ionic Liquid-Based Strain Sensor for Precise Human Motion Monitoring. ACS Appl. Mater. Interfaces 2017, 9, 2, 1770–1780

Metamorphosis in the Robot World

This article is based on a recent paper published in ACS Applied Polymer Materials, “Soft Tunable Gelatin Robot with Insect-like Claw for Grasping, Transportation, and Delivery.”

Read the full paper here

Research recently published in ACS Applied Polymer Materials describes a soft, magnetic millirobot inspired by the walking and grabbing capabilities of insects. But what are we going to do with a robotic caterpillar?

Millirobots are small-scale flexible robots with unique structures that allow them to roll or inch themselves forward, making them useful for applications such as targeted drug delivery, minimally invasive surgery, small-scale manipulations, and microfluidic devices. This may include work in hard-to-reach areas such as the gastrointestinal tract, which not only requires movement and navigation using a magnetic field, but also ease of removal or degradation. Unlike traditional rigid robots, soft millirobots do not have motors or joints that allow them to perform complex tasks, and therefore need special designs and structures to achieve advanced operations. 1-10

Conventional small-scale soft magnetic robots are usually made of polydimethylsiloxane or silicone rubber. While these materials are convenient for both fabrication and control, they are non-degradable, and their fixed mechanical characteristics limit fine-tuning of the robot’s properties for various purposes. However, researchers have now created a millirobot out of soft, biodegradable materials that can grab, roll, and climb—and then dissolve after its job is done. Inspired by the grasping movement of insects and mammals, they have been able to achieve independent control and demonstrate cargo transportation by a series of continuous operations such as nipping, rolling, opening, flipping, and releasing.11

The researchers developed this caterpillar-style millirobot using a gelatin solution mixed with microparticles of iron oxide. They achieved strength and solidity by cooling and then soaking the hydrogel in ammonium sulfate to cause cross-linking. Placing the material above a permanent magnet caused the microparticles to push the gel outwards, forming insect-like legs along the lines of the magnetic field. Because the iron oxide microparticles form magnetic chains within the gel, moving a magnet caused the legs to bend and produce a claw-like grasping motion.

In experiments, the material gripped a 3D-printed cylinder and a rubber band, and it was able to carry each to new locations. The team also tested the millirobot’s ability to deliver a drug by loading its legs with a dyed solution and rolling it through a stomach model. Once at its destination, the robot unfurled and released the dye with the strategic use of magnets.

Importantly, the millirobot easily degraded in water in just 48 hours, leaving behind only the iron oxide particles—which have no magnetic torque once the magnetic field is removed. The researchers say that the new millirobot could pave the way for new methods of drug delivery and other biomedical applications.

Watch the video around this research created by the ACS Science Communications team:

Read the full press release on acs.org

Read the original article from ACS Applied Polymer Materials

Read more about millirobots in ACS journals

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Solid–Liquid State Transformable Magnetorheological Millirobot
Zhipeng Chen, Weibin Lu, Yuanyuan Li, Pengfei Liu, Yawen Yang, and Lelun Jiang
DOI:10.1021/acsami.2c05251

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Magnetic Soft Materials and Robots
Yoonho Kim and Xuanhe Zhao
DOI: 10.1021/acs.chemrev.1c00481

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Robust, Healable, Self-Locomotive Integrated Robots Enabled by Noncovalent Assembled Gradient Nanostructure
Yuyan Wang, Gehong Su, Jin Li, Quanquan Guo, Yinggang Miao, and Xinxing Zhang
DOI: 10.1021/acs.nanolett.2c01375

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Visible Light-Driven Jellyfish-like Miniature Swimming Soft Robot
Chao Yin, Fanan Wei, Shihan Fu, Zhushan Zhai, Zhixing Ge, Ligang Yao, Minlin Jiang, and Ming Liu
DOI: 10.1021/acsami.1c13975

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Biodegradable Thermomagnetically Responsive Soft Untethered Grippers
Kunihiko Kobayashi, ChangKyu Yoon, Seung Hyun Oh, Jayson V. Pagaduan, and David H. Gracias
DOI: 10.1021/acsami.8b15646

References

  1. Sitti M, et al. Biomedical applications of untethered mobile milli/microrobots. Proc IEEE 2015;103:205–224.
  2. Yang X, et al. An agglutinate magnetic spray transforms inanimate objects into millirobots for biomedical applications. Sci Robot 2020;5:eabc8191.
  3. Nelson BJ, et al. Microrobots for minimally invasive medicine. Annu Rev Biomed Eng 2010;12:55–85.
  4. Hu W, et al. Small-scale soft-bodied robot with multimodal locomotion. Nature 2018;554:81–85.
  5. Lu H, et al. A bioinspired multilegged soft millirobot that functions in both dry and wet conditions. Nat Commun 2018;9:3944.
  6. Zheng Z, et al. Ionic shape-morphing microrobotic end-effectors for environmentally adaptive targeting, releasing, and sampling. Nat Commun 2021;12:411.
  7. Li G, et al. Transparent Magnetic Soft Millirobot Actuated by Micro-Node Array. Adv Mater Technol 2021;6:2100131.
  8. Zhang T, et al. Millimeter-Scale Soft Continuum Robots for Large-Angle and High-Precision Manipulation by Hybrid Actuation. Adv Intell Syst 2021;3:2000189.
  9. Liu JAC, et al. Photothermally and magnetically controlled reconfiguration of polymer composites for soft robotics. Sci Adv 2019;5:eaaw2897.
  10. Dong X, et al. Bioinspired cilia arrays with programmable nonreciprocal motion and metachronal coordination. Sci Adv 2020;6:eabc9323.
  11. Yang L, et al. Soft Tunable Gelatin Robot with Insect-like Claw for Grasping, Transportation, and Delivery. ACS Appl Polym Mater 2022;4(8):5431–5440.

White Teeth Without the Toothbrush

This article is based on a recent paper published in ACS Applied Materials & Interfaces, “Fast Cross-Linked Hydrogel as a Green Light-Activated Photocatalyst for Localized Biofilm Disruption and Brush-Free Tooth Whitening.”

Read the full paper here

It’s not just a cliché that the first thing people notice about you is your smile: a 2010 survey found nearly half of us choose a great smile as a person’s most attractive feature.1 Furthermore, aspects of oral hygiene such as bad breath (89%) and yellow teeth (79%) took the lead for major turn-offs.1 Is there a chemistry solution for this very human problem?  

Globally, around 3.5 billion people suffer from oral diseases such as tooth decay and gum disease,2 many of which can be prevented through good oral hygiene. But traditional toothpastes remove only surface stains, and bleaching treatments can harm enamel. New research published in ACS Applied Materials & Interfaces reports on a novel hydrogel treatment that can break apart cavity-forming biofilms and whiten teeth without damage.

Current whitening treatments combine hydrogen peroxide gels with blue light, producing a chemical reaction that removes stains but also generates reactive oxygen species that can break down enamel and potentially damage exposed skin and eyes. Researchers at Nanchang University in China wanted to find a material that could instead be activated by a safer green light to both whiten teeth and prevent cavities.

The research team designed an injectable sodium alginate hydrogel membrane doped with bismuth oxychloride and cubic cuprous oxide nanoparticles to simultaneously achieve local tooth whitening and biofilm removal through a photodynamic dental therapy process.3 This was tested ex vivo on teeth stained with coffee, tea, blueberry juice, and soy sauce. Following treatment with the hydrogel and green light, teeth got brighter over time with no damage to the enamel. Additionally, the treatment killed 94% of bacteria in biofilms.

To demonstrate efficacy in vivo, the team used the new method on mice whose mouths were inoculated with cavity-forming bacteria, and they found that the new method prevented both moderate and deep cavities forming on tooth surfaces. The researchers report that their safe, brush-free treatment both effectively prevents cavities and whitens teeth, demonstrating a promising strategy for oral health care in the future.3 

Watch the video around this research created by the ACS Science Communications team:

Read the full press release on acs.org

Read the original article from ACS Applied Materials & Interfaces

References

  1. Philips Sonicare Survey. Oral Care Love Affair: Americans Open up About Their Oral Health. 6 December 2010.
  2. World Health Organization. Oral Health Fact Sheet. 15 March 2022.
  3. Li Q, et al. Fast Cross-Linked Hydrogel as a Green Light-Activated Photocatalyst for Localized Biofilm Disruption and Brush-Free Tooth Whitening. ACS Appl Mater Interfaces 2022;14(25):28427–28438.

Further reading on this topic

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A safe and effective way to whiten teeth
American Chemical Society. Press Release. 18 July 2018

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Photothermal-Enhanced Fenton-like Catalytic Activity of Oxygen-Deficient Nanotitania for Efficient and Safe Tooth Whitening
Xingyu Hu, Li Xie, Zhaoyu Xu, Suru Liu, Xinzhi Tan, Ruojing Qian, Ruitao Zhang, Mingyan Jiang, Wenjia Xie, and Weidong Tian
DOI: 10.1021/acsami.1c06774

ACS Wishes You a Happy Year of the Tiger

American Chemical Society CEO Dr. Thomas M. Connelly has prepared a special message on behalf of everyone at ACS, wishing you and your families the very best health and happiness as you celebrate the Lunar New Year.


The past year has been one of difficulty as the pandemic continues. But it was also a year of incredible collaboration between ACS and Chinese authors, reviewers, and institutions. ACS would like to thank our colleagues and partners throughout Asia for their excellent work and wish them a happy and prosperous Year of the Tiger.

Accounts of Materials Research Launches AMR Materials Stories Video Interview Series

Accounts of Materials Research (AMR) is pleased to launch a new video interview series: AMR Materials Stories. In these short interviews, authors and Editors talk about aspects of their research. The interviews help foster greater communication among scientists and to promote public understanding of science.

In the first video, AMR Author Bram Neirinck catches up with Sarah J. Wolff, Co-Guest Editor of the upcoming Virtual Special Issue on Additive Manufacturing of Metals. They discuss powder bed-based additive manufacturing and how metal additive manufacturing changes the world. Find out more and read Bram’s Viewpoint article here.

The second video features J. Fraser Stoddart discussing the use of weak non-covalent interactions such as hydrogen bonding, π-π interactions and other supramolecular forces to design the next generations of materials. Read the Account by Penghao Li, Matthew R. Ryder, and J. Fraser Stoddart.

More interviews are on the way! Keep an eye out for further videos in this series.

Watch the ACS Macro Letters 10th Anniversary Webinar Series

In 2021, ACS Macro Letters celebrated its 10th Anniversary through a series of quarterly webinar events, featuring engaging speakers with a variety of expertise focusing on different topics within polymer science. Attendees were then invited to participate in a Q&A session with ACS Macro Letters Editor-in-Chief Stuart J. Rowan, Associate Editors, and the speakers.

The journal just concluded its fourth and final installment of this series on December 9, 2021. Topics covered throughout the series include polymer physics/physical science, polymer chemistry/synthesis, biopolymers and biomedical materials, and future opportunities and challenges for polymers.

Watch recordings of each ACS Macro Letters webinar:

Sign up to receive regular news & alerts from ACS Macro Letters

Introducing JACS in Conversation With…

In this video interview series from the Journal of the American Chemical Society (JACS), Editor-in-Chief Professor Erick Carreira speaks with accomplished scientists in chemistry.

Through a series of fascinating interviews, Professor Carreira explores their views on the future of chemistry; delves into their professional history, discussing their greatest accomplishments and exploring the variety of career progressions; gains insight into their personal hobbies and how that influences their research; and seeks their insight into what JACS is doing well – and what it could do better – to continue serving the chemistry community.

Click on the interviewees’ names to watch their videos:

Professor Roald Hoffman, Cornell University

 


Professor Scott E. Denmark, University of Illinois at Urbana-Champaign

 


Professor Jack D. Dunitz (1923 – 2021)

Part 1:

 

Part 2:

 


Professor Jacqueline K. Barton, California Institute of Technology (Caltech)

 


Theodore Goodson III, University of Michigan

 


Professor Laura Gagliardi, The University of Chicago

 


Professor Thomas A. Holme, Iowa State University

 


Professor Dame Carol V. Robinson, University of Oxford

 


Professor Karen L. Wooley, Texas A&M University

 


Professor Kelly Chibale, Director of H3D Centre in Cape Town, South Africa

 

See what people are saying about this video series:

“This is such a terrific way to preserve our field. It is so important to capture our tremendous scientific history with these living legends.” -Angela Wilson, 2021 President-elect, American Chemical Society

“Very interesting and motivational.” -Dr. Sai Manoj, George Mason University

“What a great conversation!” -Leonel Barrios Jimenez Ph.D., Texas A&M University

“Amazing living history. So interesting to hear these first hand accounts…It’s wonderful that his thoughts are preserved here.” -Professor Jonathan Steed, Durham University

“Very poignant. We wait too long to record the thoughts of our elders. This kind of thing is brilliant. Keep doing it!!” -Professor Michael Harmata, University of Missouri

Stay Up to Date on the Latest Interviews, Stories, and More

JACS Au Meet the Editors: Christopher Jones and Wasiu Lawal

JACS Au is a global, open access, multidisciplinary journal and its diverse editorial team is an essential element of its strength. Editor-in-Chief Christopher W. Jones is supported by a team of six Associate Editors from around the world, each bringing a different research focus and skill set to the journal. But who are these editors? In this video series, JACS Au Associate Editors introduce themselves through candid conversation, speaking with their fellow editors as peers in a series of illuminating discussions.

In the final interview of the series, it is the turn of Editor-in-Chief Christopher Jones and JACS Au‘s Associate Managing Editor, Wasiu Lawal, to sit down and discuss their lives and work in chemistry, including:

  • The books that have had the biggest impact on their lives and careers
  • The advice they would give to young scientists
  • The unanticipated benefits of choosing the career of a chemist
  • What makes a compelling scientific paper, and more

Learn More About JACS Au.


Why Not Join Us at JACS Au?

At JACS Au, we welcome manuscripts reporting significant research discoveries in all fields of chemistry and related sciences.

Find out more and submit your research to JACS Au.

ACS Materials Letters is the Home of Transformative Materials Research

ACS Materials Letters launched in 2019 with the goal of becoming the home of transformative materials research. The journal is achieving this with a focus on publishing high-quality and urgent papers at the forefront of fundamental and applied research, at the interface between materials and other disciplines, such as chemistry, engineering, and biology.

Now in its second year, ACS Materials Letters has published more than 400 peer-reviewed articles from corresponding authors representing nearly 30 countries worldwide. The journal achieved a partial Impact Factor of 8.312 in its first year of eligibility, along with a Cite Score of 2.9, based on almost 1,200 citations.

Thank you to all of the authors and readers that have made ACS Materials Letters the “Home of Transformative Materials Research” in such a short time. We appreciate your support, and we look forward to continuing to work together to reach new heights in 2022 and beyond by continuing to publish and showcase research addressing global challenges.

In celebration of two years of transformative materials research, the journal curated a list of dynamic papers across some of our most important topical areas, including energy, catalysis, functional materials, and the environment.

Click the drop downs below to view the list of articles associated with each topical category:

Energy

Single Crystals: The Next Big Wave of Perovskite Optoelectronics
ACS Materials Lett. 2020, 2, 2, 184–214
DOI: 10.1021/acsmaterialslett.9b00290
***
Miscibility Control by Tuning Electrostatic Interactions in Bulk Heterojunction for Efficient Organic Solar Cells
ACS Materials Lett. 2021, 3, 9, 1276–1283
DOI: 10.1021/acsmaterialslett.1c00328
***
Advanced Graphene Materials for Sodium/Potassium/Aluminum-Ion Batteries
ACS Materials Lett. 2021, 3, 8, 1221–1237
DOI: 10.1021/acsmaterialslett.1c00280
***
Lithium Ytterbium-Based Halide Solid Electrolytes for High Voltage All-Solid-State Batteries
ACS Materials Lett. 2021, 3, 7, 930–938
DOI:10.1021/acsmaterialslett.1c00142
***
Superior Oxygen Electrocatalysis on Nickel Indium Thiospinels for Rechargeable Zn–Air Batteries
ACS Materials Lett. 2019, 1, 1, 123–131
DOI: 10.1021/acsmaterialslett.9b00093

Environment

Practical ex-Situ Technique To Measure the Chemical Stability of Anion-Exchange Membranes under Conditions Simulating the Fuel Cell Environment
ACS Materials Lett. 2020, 2, 2, 168–173
DOI: 10.1021/acsmaterialslett.9b00418
***
An Amidoxime-Functionalized Porous Reactive Fiber against Toxic Chemicals
ACS Materials Lett. 2021, 3, 4, 320–326
DOI: 10.1021/acsmaterialslett.0c00598
***
Transparent Bamboo with High Radiative Cooling Targeting Energy Savings
ACS Materials Lett. 2021, 3, 6, 883–888
DOI: 10.1021/acsmaterialslett.1c00272

Healthcare

Adhesive Biocomposite Electrodes on Sweaty Skin for Long-Term Continuous Electrophysiological Monitoring
ACS Materials Lett. 2020, 2, 5, 478–484
DOI: 10.1021/acsmaterialslett.0c00085
***
Fused Thiophene-S,S-dioxide-Based Super-Photostable Fluorescent Marker for Lipid Droplets
ACS Materials Lett. 2021, 3, 1, 42–49
DOI: 10.1021/acsmaterialslett.0c00451

Functional materials

Directed Self-Assembly of Ultrasmall Metal Nanoclusters
ACS Materials Lett. 2019, 1, 2, 237–248
DOI: 10.1021/acsmaterialslett.9b00136
***
Hyperfluorescence-Based Emission in Purely Organic Materials: Suppression of Energy-Loss Mechanisms via Alignment of Triplet Excited States
ACS Materials Lett. 2020, 2, 11, 1412–1418
DOI: 10.1021/acsmaterialslett.0c00407
***
Sub-One-Nanometer Nanomaterials Showing Polymer-Analogue Properties
ACS Materials Lett. 2020, 2, 6, 639–643
DOI: 10.1021/acsmaterialslett.0c00149
***
Molecular Motion in the Solid State
ACS Materials Lett. 2019, 1, 4, 425–431
DOI: 10.1021/acsmaterialslett.9b00292

Catalysis

Mechanochemical Synthesis of High Entropy Oxide Materials under Ambient Conditions: Dispersion of Catalysts via Entropy Maximization
ACS Materials Lett. 2019, 1, 1, 83–88
DOI: 10.1021/acsmaterialslett.9b00064
***
Tailoring Electronic Structure of Atomically Dispersed Metal–N3S1 Active Sites for Highly Efficient Oxygen Reduction Catalysis
ACS Materials Lett. 2019, 1, 1, 139–146
DOI: 10.1021/acsmaterialslett.9b00094
***
Ultrathin CuNi Nanosheets for CO2 Reduction and O2 Reduction Reaction in Fuel Cells
ACS Materials Lett. 2021, 3, 8, 1143–1150
DOI: 10.1021/acsmaterialslett.1c00351
***
Engineering Charge Redistribution within Perovskite Oxides for Synergistically Enhanced Overall Water Splitting
ACS Materials Lett. 2021, 3, 8, 1258–1265
DOI: 10.1021/acsmaterialslett.1c00359

In celebration of the journal’s first two years, the Editors of ACS Materials Letters recently hosted the “Materials Innovation for Healthcare and Sustainability” webinar. Watch it at your convenience HERE!