Fluorescence signaling molecularly imprinted polymers for antibiotics prepared via site-directed post-imprinting introduction of plural fluorescent reporters within the recognition cavityElectronic supplementary information (ESI) available: The SEM image of polymer particles, the fluorescence stability test of T-HOLO(FSA)(Cys-DBD) and HOLO(FSA)(Cys-DBD), the fluorescence spectra of HOLO(FSA)(Cys-DBD) and HOLO(FSA)(MBA), and the temperature dependence of ampicillin binding toward T-HOLO(FSA)(MBA)
An antibiotic-imprinted cavity with two different fluorescent dyes was prepared by molecular imprinting and subsequent post-imprinting modifications (PIMs), for the readout of a specific binding event as a fluorescence signal. The fluorescent dyes were site-specifically introduced into the cavity us...
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Main Authors | , , , |
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Format | Journal Article |
Language | English |
Published |
09.11.2016
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Online Access | Get full text |
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Summary: | An antibiotic-imprinted cavity with two different fluorescent dyes was prepared by molecular imprinting and subsequent post-imprinting modifications (PIMs), for the readout of a specific binding event as a fluorescence signal. The fluorescent dyes were site-specifically introduced into the cavity using an orthogonal reversible bonding reaction, Schiff base formation, and a disulfide exchange reaction. The template molecule, comprising cephalexin connected to a Schiff base monomer and a disulfide monomer, was copolymerized with a crosslinker. This was followed by Schiff base hydrolysis and a disulfide exchange reaction, yielding the APO-type scaffold (PRECURSOR). Two different fluorophores, 4-formylsalicylic acid (FSA) and 4-(
N,N
-dimethylaminosulfonyl)-7-fluoro-2,1,3-benzoxadiazole (DBD), were introduced into the PRECURSOR by site-directed PIMs, yielding a fluorescent HOLO polymer. The obtained fluorescent polymer, HOLO(FSA)(Cys-DBD), was able to selectively readout the binding events as a fluorescence signal change. We found that the proposed strategy has the potential to open up a new class of synthetic materials possessing various desirable functions.
An antibiotic-imprinted cavity with two different fluorescent dyes was prepared by molecular imprinting and subsequent post-imprinting modifications (PIMs), for the readout of a specific binding event as a fluorescence signal. |
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Bibliography: | Electronic supplementary information (ESI) available: The SEM image of polymer particles, the fluorescence stability test of T-HOLO(FSA)(Cys-DBD) and HOLO(FSA)(Cys-DBD), the fluorescence spectra of HOLO(FSA)(Cys-DBD) and HOLO(FSA)(MBA), and the temperature dependence of ampicillin binding toward T-HOLO(FSA)(MBA). See DOI 10.1039/c6tb02000c |
ISSN: | 2050-750X 2050-7518 |
DOI: | 10.1039/c6tb02000c |