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Aromatic guest inclusion by a tripodal ligand: Fluorescence and structural studies

Paper ID Volume ID Publish Year Pages File Format Full-Text
28005 44056 2008 7 PDF Available
Title
Aromatic guest inclusion by a tripodal ligand: Fluorescence and structural studies
Abstract

The newly synthesized simple tripodal ligand tris-[2-(naphthalen-2-yloxy)-ethyl]-amine (L1) act as a fluorescence signaling system for aromatic guest. It forms inclusion complexes with several electron deficient aromatic compounds. This inclusion phenomenon has been studied by steady-state fluorescence spectroscopy and solid-state structural analysis. Electron-rich L1 shows dramatic color change and a concomitant quenching of luminescence in solution as well as solid phase when titrated with several other electron deficient aromatic guest molecules. Rather high selectivity towards the picric acid was observed. L1 simultaneously forms inclusion complex and organic salt co-crystal with the composition [(L1H+) (Pic−)] ⊂ PicH (PicH = picric acid) when crystallized in the presence of picric acid. In the solid state, it forms a strong π–π, C–H⋯π and C–H⋯O type interactions.

Keywords
Tripodal ligand; Fluorescence; Inclusion complexes; Aromatic guest; Co-crystal; X-ray structure
First Page Preview
Aromatic guest inclusion by a tripodal ligand: Fluorescence and structural studies
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 197, Issues 2–3, 25 June 2008, Pages 149–155
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering