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Open AccessArticle

Development of Amylose- and β-Cyclodextrin-Based Chiral Fluorescent Sensors Bearing Terthienyl Pendants

Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
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Academic Editor: Yoshio Okamoto
Molecules 2016, 21(11), 1518; https://doi.org/10.3390/molecules21111518
Received: 13 October 2016 / Revised: 1 November 2016 / Accepted: 8 November 2016 / Published: 11 November 2016
Phenylcarbamate derivatives of amylose and β-cyclodextrin show excellent chiral recognition when used as chiral stationary phases (CSPs) for high-performance liquid chromatography. To open up new possibilities of carbohydrate-based materials, we developed chiral fluorescent sensors based on amylose and β-cyclodextrin (Am-1b and CyD-1b, respectively) by attaching fluorescent π-conjugated units on their side chains. Their recognition abilities toward chiral analytes containing a nitrophenyl unit were evaluated by measuring the enantioselective fluorescence quenching behavior. Both sensors showed the same degree of enantioselective fluorescence response for various aromatic nitro compounds. However, in some cases, their enantioselectivities were different depending on the analytes. The difference in the chiral recognition abilities between Am-1b and CyD-1b seems to be based on the structural difference of their inherent backbones, that is, the one-handed helical structure and cyclic structure, respectively. The study on the resolution ability of the Am-1b-based CSP revealed that the terthienyl-based pendant of Am-1b provides not only a fluorescent functionality but also a different chiral recognition site from that of amylose tris(phenylcarbamate). View Full-Text
Keywords: carbohydrates; chirality; fluorescent sensor; helix; higher-order structure; polysaccharides carbohydrates; chirality; fluorescent sensor; helix; higher-order structure; polysaccharides
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MDPI and ACS Style

Ikai, T.; Yun, C.; Kojima, Y.; Suzuki, D.; Maeda, K.; Kanoh, S. Development of Amylose- and β-Cyclodextrin-Based Chiral Fluorescent Sensors Bearing Terthienyl Pendants. Molecules 2016, 21, 1518.

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