Exploring aggregation-induced emission through tuning of ligand structure for picomolar detection of pyrene

authors	Ghosh, M; Ta, S; Lohar, S; Das, S; Brandao, P; Felix, V; Das, D
nationality	International
journal	JOURNAL OF MOLECULAR RECOGNITION
author keywords	AIE; pyrene; SC-XRD; sensor; SPE
keywords	POLYCYCLIC AROMATIC-HYDROCARBONS; SCHIFF BASE SENSOR; FLUORESCENCE; RECOGNITION; AL3+; DISCRIMINATION; PHOTOPHYSICS; NAPHTHALENE; EXCIMER; URINE
abstract	Tuning of ligand structures through controlled variation of ring number in fused-ring aromatic moiety appended to antipyrine allows detection of 7.8 x 10(-12) M pyrene via aggregation-induced emission (AIE) associated with 101-fold fluorescence enhancement. In one case, antipyrine unit is replaced by pyridine to derive bis-methylanthracenyl picolyl amine. The structures of four molecules have been confirmed by single crystal X-ray diffraction analysis. Among them, pyrene-antipyrine conjugate (L) undergoes pyrene triggered inhibition of photo-induced electron transfer (PET) leading to water-assisted AIE.
publisher	WILEY
issn	0952-3499
isbn	1099-1352
year published	2019
volume	32
issue	5
digital object identifier (doi)	10.1002/jmr.2771
web of science category	Biochemistry & Molecular Biology; Biophysics
subject category	Biochemistry & Molecular Biology; Biophysics
unique article identifier	WOS:000466387000002