Plastics are one of the largest sources of pollution on Earth, lasting for years on land or in water. But a new type of brilliantly colored cellulose-based plastic detailed in ACS Nano could change that. By adding citric acid and squid ink to a cellulose-based polymer, researchers created a variety of structurally colored plastics that were comparable in strength to traditional plastics, but made from natural biodegradable ingredients and easily recycled using water.

A new study, published by a team of UBC Okanagan chemistry researchers, is creating a major rethink of how enzymes work. And how a quantum phenomenon helps an important enzyme control essential yet dangerous molecules.

Enzymes, also known as biocatalysts, are the tiny machines behind every process in living things, explains study co-author Hossein Khalilian, a doctoral student in the Irving K. Barber Faculty of Science’s Department of Chemistry. Enzymes make molecules that are crucial to life, while also breaking down molecules that are bad or unnecessary for us.

Researchers at the University of Maryland Baltimore County (UMBC) have developed a new way to predict 2D materials that might transform electronics, such as sensors and solar cells. They used a mix of data mining, computer modeling, and structural analysis to reveal 83 candidate materials. Collaborators at the University of Maryland, College Park successfully synthesized some of the proposed materials in the lab, proving the UMBC predictions could be used to guide experiments with the novel materials. 

A promising breakthrough in cancer treatment is taking shape at the University of Missouri Research Reactor (MURR), where scientists are developing a powerful radioisotope that could one day precisely target and destroy cancer cells. A recent study led by Heather Hennkens, an associate professor at Mizzou’s Department of Chemistry and a researcher at MURR, investigated how to produce, purify and formulate Terbium-161 for radiopharmaceutical use. Through this work, Hennkens’ lab is optimizing the radioisotope so it can be effectively attached to a targeting molecule and sent as the therapeutic “payload” to destroy tumor cells.

When a reporter with the Sierra Club magazine asked Graham Peaslee, a physicist at the University of Notre Dame, to test several different samples of unused menstrual underwear for per- and polyfluoroalkyl substances (PFAS) in 2019, the results fueled concern over chemical exposure in feminine hygiene products — which ultimately ended up in a $5 million lawsuit against the period and incontinence underwear brand Thinx.

Then in 2023, the New York Times asked Peaslee to test 44 additional period and incontinence products for PFAS, a class of toxic fluorinated compounds inherently repellent to oil, water, soil and stains, and known as “forever chemicals” for their exceptionally strong chemical and thermal stability. Measurable PFAS were found in some layers of many of the products tested — some low enough to suggest the chemicals may have transferred off packaging materials, while others contained higher concentrations, suggesting the chemicals were intentionally used during the manufacturing process.

In the meantime, another group of researchers published a study that found PFAS in single-use period products, leading Peaslee and his lab to widen their investigation into all sorts of reusable feminine hygiene products — often viewed as an eco-friendly option by consumers. Now, the results of that study have been published in Environmental Science & Technology Letters.