Affiliation:
1. Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Mohanpur Nadia WB-741246 India
2. Department of Chemistry Simon Fraser University Burnaby British Columbia V5A 1S6 Canada
Abstract
AbstractThe chalcone‐flavylium photochromic system switches in aqueous media. However, the chalcone→flavylium conversion requires detrimental ultra‐violet (UV) light for the switching which deters their applications in the biological domain. To address this issue, we have synthesized strategically modified chalcone scaffolds that can be reversibly switched to the flavylium forms with visible light ranging from 456 nm (blue) to 640 nm (red).