Origins of ‘on–off’ fluorescent behavior of 8-hydroxyquinoline containing chemosensors

Autor:	Randy D. Lamb, Jerald S. Bradshaw, Reed M. Izatt, R. Todd Bronson, Marco Montalti, Nelsi Zaccheroni, N. Kent Dalley, Paul B. Savage, Luca Prodi
Přispěvatelé:	BRONSON R. T., MONTALTI M., PRODI L., ZACCHERONI N., LAMB R. D., DALLEY N. K., IZATT R. M., BRADSHAW R. M., SAVAGE P. B.
Rok vydání:	2004
Předmět:	Quenching (fluorescence) Proton Metal ions in aqueous solution Organic Chemistry Quinoline Crystal structure Photochemistry Biochemistry Fluorescence Ion chemistry.chemical_compound Electron transfer chemistry Drug Discovery
Zdroj:	Tetrahedron. 60:11139-11144
ISSN:	0040-4020
DOI:	10.1016/j.tet.2004.08.062
Popis:	Derivatives of 8-hydroxyquinoline were used as model compounds to probe the pathways of non-radiative relaxation of fluorophores in two fluorescent chemosensors. Results suggest that both photo-induced proton transfer and photo-induced electron transfer contribute to quenching the fluorescence of the chemosensors. Crystal structures of an 8-hydroxyquinoline-containing chemosensor complexed to various metal ions indicate that a proton shift occurs concomitant with complex formation. This proton shift precludes both photo-induced proton and electron transfer allowing fluorescence emission from chemosensor-metal ion complexes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92dcdb473cbf6bf1dafbcf3d98ee827d https://doi.org/10.1016/j.tet.2004.08.062 Zobrazit plný text záznamu Full Text from ScienceDirect