Durgesh Singh

Excited state intramolecular proton transfer (ESIPT) is a process where photoexcited molecules dissipate energy by transferring protons and undergoing tautomerization. With a brief introduction of a new emerging sensing mechanism, viz., CN isomerization, AIE, etc., this study explores the various aspects of ESIPT based on the current studies. Since Weller discovered ESIPT in salicylic acid and methyl salicylate, extensive research has developed on this topic, attributing to its wide applications.

President Donald Trump and French President Emmanuel Macron have been actively exploring possible routes to peace in Ukraine in a series of high-stakes diplomatic meetings. These talks take place at a time when previous United Nations (UN) decisions addressing the ongoing violence have caused division in the international community. A UN resolution that held Russia responsible for starting the crisis in Ukraine was recently opposed by the Trump administration, garnering media attention.

Held at the Shrine Auditorium in Los Angeles on February 23, 2025, the 31st Annual Screen Actors Guild (SAG) Awards honored a stunning array of fashion statements in addition to exceptional performances in television and movies. Hollywood’s finest walked the red carpet wearing everything from daring avant-garde designs to timeless elegance. These are a few of the evening’s most striking ensembles.