Issue 2, 2019

Systematic oligoaniline-based derivatives: ACQ–AIE conversion with a tunable insertion effect and quantitative fluorescence “turn-on” detection of BSA

Abstract

The aggregation-induced emission (AIE) phenomenon has attracted persistent attention in recent years. Currently, the molecular design is mainly based on ring-shaped molecules. Hence, a novel strategy was put forward to achieve conversion from aggregation-caused quenching to AIE in derivatives of aniline oligomers using a new “chain-insertion” pattern. Studies of aniline oligomer derivatives indicate a tunable insertion effect on the AIE behaviors of the derivatives. Fully substituted oligoanilines exhibited typical AIE behavior, while partially substituted derivatives were AIE-inactive. In addition, luminescence wavelength and solid fluorescence in aniline derivatives can be effectively regulated by insertion and chain length. The resulting model will contribute to simplified and systematic research into oligomer-based AIEgens. Moreover, fully substituted anilines show a quantitative turn-on fluorescence response towards bovine serum albumin (BSA) with a detection limit in the order of micrograms per liter. Thus, fully substituted anilines show great potential for use as fluorescent probes in BSA sensors.

Graphical abstract: Systematic oligoaniline-based derivatives: ACQ–AIE conversion with a tunable insertion effect and quantitative fluorescence “turn-on” detection of BSA

Supplementary files

Article information

Article type
Research Article
Submitted
24 Okt 2018
Accepted
17 Dez 2018
First published
18 Dez 2018

Mater. Chem. Front., 2019,3, 331-338

Systematic oligoaniline-based derivatives: ACQ–AIE conversion with a tunable insertion effect and quantitative fluorescence “turn-on” detection of BSA

H. Lu, K. Wang, B. Liu, M. Wang, M. Huang, Y. Zhang and J. Yang, Mater. Chem. Front., 2019, 3, 331 DOI: 10.1039/C8QM00543E

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