Recently, the team led by Academician Wei-Hong Zhu at East China University of Science and Technology proposed a novel photo-rearrangement reaction of diarylethenes induced by intramolecular proton transfer (IPT), while exploring the reactivity of active carbon sites in diarylethene systems. In this study, published in CCS Chemistry, aldehyde and carboxyl groups were innovatively introduced at the active carbon positions, revealing distinct photoresponsive behaviors. The dialdehyde-substituted system exhibited typical reversible photochromism, whereas the dicarboxylate-substituted counterpart underwent an unexpected photorearrangement to yield polycyclic aromatic structures. Mechanistic studies, including transient absorption spectroscopy and density functional theory (DFT) calculations, demonstrated that the rearrangement proceeds through electrocyclization followed by an IPT-driven decarboxylation process. This work opens a new pathway for light-induced synthesis of polycyclic aromatic hydrocarbons and highlights potential applications in molecular modification, photoreaction mechanisms, and synthetic photochemistry.

Food scientists at the University of Illinois Urbana-Champaign found the optimal conditions for fermenting five types of legume pulses, which not only extended the shelf lives of the raw foods but increased their antioxidant and antidiabetic properties. The research holds potential for improving the functional properties of health-promoting foods and the sustainability of plant-based diets to address global problems with food insecurity.

Co-packaged optics (CPO) technology requires reliable laser sources, either integrated or external, for operation. Since integrated laser sources are associated with reliability challenges, researchers are increasingly exploring CPO systems with external sources. Recently, polymer waveguides fabricated on glass-epoxy substrates have emerged as a reliable solution for transmitting laser signals from external sources to photonic circuits. Researchers from Japan have now demonstrated the suitability of these waveguides for use in CPO systems.

The MRI image shows a brain tumor in an inauspicious location, – and a brain biopsy will entail high risks for the patient, who had consulted us due to double vision. Situations such as this case discussion, cited by way of example, in a multidisciplinary team of cancer medicine experts prompted researchers at Charité - Universitätsmedizin Berlin, together with cooperation partners, to look for new diagnostic procedures. The result is an AI model. The model makes use of specific characteristics in the genetic material of tumors – their epigenetic fingerprint, obtained for example from cerebrospinal fluid, among other things. As the team shows in the journal Nature Cancer*, the new model classifies tumors quickly and very reliably.

Villefranche-sur-Mer, France - June 6, 2025 - In the frame of the United Nations Ocean Conference 2025, a high-level side event hosted on June 3rd at the Institut de la Mer de Villefranche (IMEV) culminated in the signing of the Declaration of Commitment to Scientific Ocean Drilling.