Design and preparation of poly(tannic acid) nanoparticles with intrinsic fluorescence: A sensitive detector of picric acid
Design and preparation of poly(tannic acid) nanoparticles with intrinsic fluorescence: A sensitive detector of picric acid
复制标题
DOI：
10.1016/j.cej.2021.129090
复制
发表时间：
2021-07
影响因子：
15.1
通讯作者：
Yanfang Zhao;Lubin Xu;Fan-Long Kong;Lei Yu
中科院分区：
文献类型：
--
作者：
Yanfang Zhao;Lubin Xu;Fan-Long Kong;Lei Yu
通过单宁酸（TA）的自聚合反应和过氧化氢（H2O2）的降解，成功合成了新型荧光聚（单宁酸）纳米颗粒（FPTA NPs）。所制备的FPTA NPs具有优异的本征荧光特性，并且具有成本低、生物降解性好、方便、大规模制备的特点。研究发现苦味酸 (PA) 可以作为 FPTA NP 的强猝灭剂。随后，基于 FPTA NPs 的荧光传感器被用于 PA 检测，对 PA 表现出灵敏、快速的响应。 TA的应用主要在表面修饰领域，该工作是首次利用FPTA纳米粒子的自发荧光特性进行传感器开发的报道，这将进一步拓宽TA的应用范围。该方法具有优良的灵敏度和选择性，且成本低廉，从工程角度来看具有深远的意义。
Novel fluorescent poly(tannic acid) nanoparticles (FPTA NPs) were successfully synthesized via the self-polymerization reaction of tannic acid (TA) being followed by the degradation with hydrogen peroxide (H2O2). The as-prepared FPTA NPs possessed excellent intrinsic fluorescence characteristics as well as the features of low-cost, good biodegradation, convenient and large-scale preparation. It was found that picric acid (PA) could act as a strong quencher for FPTA NPs. Subsequently, the FPTA NPs-based fluorescent sensor was used for PA detection, which showed a sensitive and fast response towards PA. The utilizations of TA are mainly in the field of surface modification, and this work is the first report on utilizing the autofluorescence characteristics of FPTA NPs in sensor development, which will further broaden the application of TA. The method is of profound meanings for the excellent sensitivity and selectivity and low cost from the engineering viewpoint.