基于喹啉的新型多重刺激响应超分子凝胶用于荧光超灵敏检测 Fe 和 Cu。

Novel multi-stimuli-responsive supramolecular gel based on quinoline for the fluorescence ultrasensitive detection of Feand Cu.

机构信息

Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission, Key Laboratory for Utility of Environmental Friendly Composite Materials and Biomass in University of Gansu Province, College of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, People's Republic of China.

出版信息

Spectrochim Acta A Mol Biomol Spectrosc. 2021 Nov 15;261:120078. doi: 10.1016/j.saa.2021.120078. Epub 2021 Jun 11.

DOI:10.1016/j.saa.2021.120078

PMID:34147737

Abstract

A novel gelator molecular based on quinolone (MN) has been successfully designed and synthesized. The gelator MN could self-assemble to form a supramolecular gel (OMN), which showed obvious aggregation-induced emission (AIE) in iso-Propyl alcohol (i-PrOH). Furthermore, the supramolecular organogel OMN realized ultrasensitive detection of Fe and Cu in aqueous medium and fluorescent quenching at 427 nm. The sensing mechanism between supramolecular gel and metal ions was fully investigated via FE-SEM, FT-IR, XRD and XPS. Meanwhile, a thin film based on responsive supramolecular gel OMN was prepared, which could be used as multi-stimuli-responsive fluorescent display materials for the detection of Fe and Cu.

摘要

一种基于喹诺酮（MN）的新型凝胶因子已被成功设计和合成。凝胶因子 MN 可以自组装形成超分子凝胶（OMN），在异丙醇（i-PrOH）中表现出明显的聚集诱导发射（AIE）。此外，超分子有机凝胶 OMN 实现了在水介质中对 Fe 和 Cu 的超灵敏检测以及在 427nm 处的荧光猝灭。通过 FE-SEM、FT-IR、XRD 和 XPS 充分研究了超分子凝胶与金属离子之间的传感机制。同时，制备了基于响应性超分子凝胶 OMN 的薄膜，可作为用于检测 Fe 和 Cu 的多刺激响应荧光显示材料。