Ready Access to Molecular Rotors Based on Boron Dipyrromethene Dyes-Coumarin Dyads Featuring Broadband Absorption

Autor: Ernesto Enríquez-Palacios, Teresa Arbeloa, Jorge Bañuelos, Claudia I. Bautista-Hernández, José G. Becerra-González, Iñigo López-Arbeloa, Eduardo Peña-Cabrera
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Molecules, Vol 25, Iss 4, p 781 (2020)
Druh dokumentu: article
ISSN: 1420-3049
DOI: 10.3390/molecules25040781
Popis: Herein we report on a straightforward access method for boron dipyrromethene dyes (BODIPYs)-coumarin hybrids linked through their respective 8- and 6- positions, with wide functionalization of the coumarin fragment, using salicylaldehyde as a versatile building block. The computationally-assisted photophysical study unveils broadband absorption upon proper functionalization of the coumarin, as well as the key role of the conformational freedom of the coumarin appended at the meso position of the BODIPY. Such free motion almost suppresses the fluorescence signal, but enables us to apply these dyads as molecular rotors to monitor the surrounding microviscosity.
Databáze: Directory of Open Access Journals