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Supramolecular Chemical Sensors Based on Pyrene Monomer–Excimer Dual Luminescence
Author(s) -
Karuppannan Sekar,
Chambron JeanClaude
Publication year - 2011
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201000724
Subject(s) - excimer , luminescence , pyrene , monomer , supramolecular chemistry , analyte , fluorescence , chemistry , substrate (aquarium) , photochemistry , nanotechnology , dual (grammatical number) , combinatorial chemistry , materials science , molecule , polymer , optoelectronics , organic chemistry , art , physics , oceanography , literature , geology , quantum mechanics
The past ten years have seen a spectacular development of chemical sensors based on the monomer–excimer dual luminescence of aromatic systems, such as pyrene. Either in the form of integrated or multicomponent molecular devices these chemosensors have been attracting a high interest above all because of their unique ratiometric properties. This review will focus on the latter systems, which can be classified into two classes: Firstly, the assembly of receptor–effector conjugates is triggerred by the analyte of interest. As a result, the sensor shows monomer to excimer fluorescence switching upon substrate binding. Secondly, the supramolecular assembly that constitutes the sensor is perturbed by interaction with the analyte. This induces a conformational change or the exchange of a component of the system, which is the cause of the luminescence switch effect.