Please use this identifier to cite or link to this item:
|Title:||Charge transfer aided selective sensing and capture of picric acid by triphenylbenzenes|
|Publisher:||ROYAL SOC CHEMISTRY|
|Citation:||NEW JOURNAL OF CHEMISTRY, 39(2)886-892|
|Abstract:||A fluorescent chemo-sensor, 1,3,5-tris(4'-(N,N-dimethylamino)phenyl)benzene was synthesized by substituting the N-H protons of 1,3,5-tris(4'-aminophenyl)benzene with methyl groups. The chemo-sensor shows highly selective and remarkable fluorescence quenching in the presence of picric acid with a detection limit of 1.5 ppm. The origin of the selectivity was investigated using absorption, fluorescence emission and H-1 NMR spectroscopic techniques. The solid state structure of 1,3,5-tris(4'-(N,N-dimethylamino)phenyl)benzene and its picric acid complex reveals multiple hydrogen bonds (N-H center dot center dot center dot O and C-H center dot center dot center dot O), pi-pi interactions and electrostatic interactions between 1,3,5-tris(4'-(N,N-dimethylamino) phenyl) benzene and picric acid. The proton transfer process from picric acid to 1,3,5-tris(4'-(N,N-dimethylamino)phenyl)benzene results in the formation of picrate anions and the triply protonated 1,3,5-tris(4'-(N,N-dimethylamino)phenyl)benzene species containing dimethylammonium (-NHMe2+) groups.|
|Appears in Collections:||Article|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.