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Sensors 2008, 8(8), 4961-4982; doi:10.3390/s8084961

Review

Chemical Sensors Based on Cyclodextrin Derivatives

Tomoki Ogoshi ^1,2  and Akira Harada ^1,*

¹ Department of Macromolecular Science, Osaka University / 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan ² Department of Chemistry and Chemical Engineering, Graduate School of Natural Science and Technology, Kanazawa University / Kakuma-machi, Kanazawa, 920-1192, Japan

* Author to whom correspondence should be addressed.

Received: 28 July 2008; in revised form: 20 August 2008 / Accepted: 20 August 2008 / Published: 25 August 2008

(This article belongs to the Special Issue Molecular Recognition and Sensors, Including Molecular Imprinting)

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Abstract: This review focuses on chemical sensors based on cyclodextrin (CD) derivatives. This has been a field of classical interest, and is now of current interest for numerous scientists. First, typical chemical sensors using chromophore appended CDs are mentioned. Various “turn-off” and “turn-on” fluorescent chemical sensors, in which fluorescence intensity was decreased or increased by complexation with guest molecules, respectively, were synthesized. Dye modified CDs and photoactive metal ion-ligand complex appended CDs, metallocyclodextrins, were also applied for chemical sensors. Furthermore, recent novel approaches to chemical sensing systems using supramolecular structures such as CD dimers, trimers and cooperative binding systems of CDs with the other macrocycle [2]rotaxane and supramolecular polymers consisting of CD units are mentioned. New chemical sensors using hybrids of CDs with p-conjugated polymers, peptides, DNA, nanocarbons and nanoparticles are also described in this review.

Keywords: Cyclodextrins; Chemical Sensors; Supramolecules; p-Conjugated Polymer; Nanocarbons; Nanoparticles.

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