title: Highly selective and sensitive fluorescent turn-on chemosensor for Al3+ based on a novel photoinduced electron transfer approach.
abstract: A photoinduced electron transfer (PET)-based chemosensor possessing dual PET processes by simultaneously introducing both nitrogen and sulfur donors was achieved. The fluorescence signal of the free chemosensor is in a normal-off state due to the sulfur donor being insensitive to environmental pH stimuli. As a result, the device can be used over a wide pH span of 3-11. Upon binding Al(3+), a significant fluorescence enhancement with a turn-on ratio over 110-fold was triggered by the inhibition of PET processes from both the sulfur and the nitrogen donors to the fluorophore.
authors.affiliation: School of Materials Science & Engineering, Tianjin University of Technology, Tianjin 300384, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Lu
authors.forename: Shanshan
authors.initials: S
authors.lastname: Huang
authors.forename: Yiyang
authors.initials: Y
authors.lastname: Liu
authors.forename: Song
authors.initials: S
authors.lastname: He
authors.forename: Liancheng
authors.initials: L
authors.lastname: Zhao
authors.forename: Xianshun
authors.initials: X
authors.lastname: Zeng
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D002412:Cations / Q000737:chemistry; D004583:Electrons; D005456:Fluorescent Dyes / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D015394:Molecular Structure; D055668:Photochemical Processes
chemical_list: D002412:Cations; D005456:Fluorescent Dyes; D000535:Aluminum