Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 6, Issue 4, Pages 964-984Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201000724
Keywords
excimers; fluorescent probes; molecular devices; sensors; signal transduction
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Funding
- Conseil Regional de Bourgogne
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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.
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