| Literature DB >> 26511954 |
Chen Jia1, Jie Tang2, Shengguo Lu3, Yuwang Han2, He Huang4.
Abstract
It was recently reported that, besides UV irradiated polymerization, polymerization of diacetylene compounds could also been initiated by radicals generated from enzyme catalyzed hydrogen peroxide (H2O2) decomposition. A new optical sensing method for H2O2 was proposed based on this phenomenon. However, the sensitivity of this method is relatively lower than existed ones. In the present work, phenylboronic acid (PBA) functionalized 10, 12-pentacosadiynoic acid (PDA-PBA) was synthesized and its vesicles were formed successfully as colorimetric sensor for H2O2 detection. It was found that color change during the polymerization of vesicles composed of the PBA modified monomer is much stronger than that of the non-modified one. The response of PDA-PBA vesicles to H2O2 is 16 times more sensitive than that of the PDA. The absorption of PDA-PBA at 650 nm is linearly related to the concentration of H2O2 and a detection limit of ~5 μM could be achieved.Entities:
Keywords: Hydrogen peroxide; Modification; Phenylboronic acid; Polydiacetylene; UV light; Vesicles
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Year: 2015 PMID： 26511954 DOI： 10.1007/s10895-015-1691-1
Source DB: PubMed Journal: J Fluoresc ISSN： 1053-0509 Impact factor: 2.217