酰腙功能化萘基自组装超分子凝胶用于高效荧光检测铁

Acylhydrazone functionalized naphthalene-based self-assembled supramolecular gels for efficient fluorescence detection of Fe.

作者信息

Liu Jutao, Wu Shang, Fu Shuaishuai, Wang Jiajia, Zhang Penghui, Wang Yanbin, Chen Chen, Zhao Xiangfei, Li Zhenhua, Yang Quanlu

机构信息

Key Laboratory for Utility of Environmental Friendly Composite Materials and Biomass in University of Gansu Province, Key Laboratory of Environment-Friendly Composites of the State Ethnic Affairs Commission, Gansu Provincial Biomass Function Composites Engineering Research Center, College of Chemical Engineering, Northwest Minzu University, Lanzhou, Gansu 730030, P. R. China.

College of Chemical Engineering, Lanzhou University of Arts and Science, Beimiantan 400, Lanzhou, Gansu 730000, P. R. China.

出版信息

Anal Methods. 2023 Aug 17;15(32):3948-3954. doi: 10.1039/d3ay00912b.

DOI:10.1039/d3ay00912b

PMID:37525948

Abstract

A new gel factor (named N) has been successfully designed and synthesized, which contains the conventional fluorophore naphthalene with the acylhydrazone bond as the self-assembly site. It can be self-assembled into stable organogels (named ON) in dimethyl sulfoxide (DMSO) and water mixed medium ( : = 4 : 1) with a critical gel temperature and concentration (55 °C and 10 mg mL). Interestingly, under 365 nm UV light, the ON exhibits bright yellow Aggregation Induced Emission (AIE). The supramolecular organogel ON shows a fluorescent "OFF" response to the metal ions Fe, and the state of the gel ON remains constant before and after detection. Notably, the minimum detection limits (LODs) of the gel ON for Fe are as low as 1.30 × 10 M. The binding mechanism of supramolecular organogels (ON) to ions has been investigated through a series of characterizations. Meanwhile, the organogel sensor ON can also be used as an ion-responsive membrane for the detection of Fe in the aqueous phase.

摘要

一种新型凝胶因子（命名为N）已成功设计并合成，它含有传统荧光团萘，以腙键作为自组装位点。它可以在二甲基亚砜（DMSO）和水的混合介质（体积比 = 4 : 1）中自组装成稳定的有机凝胶（命名为ON），临界凝胶温度和浓度分别为55 °C和10 mg mL。有趣的是，在365 nm紫外光下，ON呈现明亮的黄色聚集诱导发光（AIE）。超分子有机凝胶ON对金属离子Fe呈现荧光“关闭”响应，检测前后凝胶ON的状态保持不变。值得注意的是，凝胶ON对Fe的最低检测限（LOD）低至1.30 × 10 M。通过一系列表征研究了超分子有机凝胶（ON）与离子的结合机制。同时，有机凝胶传感器ON还可以用作离子响应膜来检测水相中的Fe。