期刊
BIOSENSORS & BIOELECTRONICS
卷 46, 期 -, 页码 124-129出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2013.02.025
关键词
Block copolymers; Photonic crystals; Sensors/biosensors; Thin films; Hydrogels; Fructose
类别
资金
- National Science Foundation [CBET0947771]
The use of one-dimensional photonic crystals fabricated from a self-assembled lamellar block copolymer as a sensitive and selective fructose sensor is investigated. The polystyrene-b-poly(2-vinyl pyridine) (PS-b-P2VP) films are functionalized with 2-(bromomethyl)phenylboronic acid. The boronic acid moiety confined within the lamellar morphology can reversibly bind to sugars such as fructose, imparting the photonic properties of the PS-b-P2VP film. The films exhibit a detection limit of 500 mu M in water and 1 mM in phosphate buffered saline. Exposure to a 50 mM solution of fructose invokes a highly visible color change from blue to orange. The films are also able to selectively recognize and respond to fructose in competitive studies in the presence of glucose, mannose and sucrose. (C) 2013 Elsevier B.V. All rights reserved.
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