Metal-ion-mediated synergistic coordination: construction of AIE-metallogel sensor arrays for anions and amino acids

Supramolecular gels with aggregation-induced emission (AIE) are recognized as excellent chemosensors. The combination of gelators and metal ions gives rise to a synergistic effect, which induces functional behaviors of anions and amino acids. The 3,4,5-tris(hexadecyl) benzoyl hydrazine functionalize...

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Bibliographic Details
Published in:New journal of chemistry 2022-09, Vol.46 (36), p.17251-17259
Main Authors: Yao, Hong, Niu, Yan-Bing, Hu, Yin-Ping, Sun, Xiao-Wen, Zhang, Qin-Peng, Zhang, You-Ming, Wei, Tai-Bao, Lin, Qi
Format: Article
Language:English
Subjects:
Amino acids
Anions
Chemical sensors
Chemoreceptors
Coordination
Gels
Hydrazines
Ions
Metal ions
Self-assembly
Sensor arrays
Smart materials
Supramolecular compounds
Synergistic effect
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Summary:Supramolecular gels with aggregation-induced emission (AIE) are recognized as excellent chemosensors. The combination of gelators and metal ions gives rise to a synergistic effect, which induces functional behaviors of anions and amino acids. The 3,4,5-tris(hexadecyl) benzoyl hydrazine functionalized naphthalimide gelator ( G ) with multi self-assembly driving forces was devised and synthesized. G could self-assemble into a stable supramolecular organogel ( OG ) in cyclohexanol solution with blue-green AIE. Notably, the OG could coordinate with different metal ions through coordination bonds to form a series of metallogels ( OGMs ). In addition, these metallogels ( OGMs ) could selectively sense various anions (I − , N 3 − , CN − ) and amino acids (L-Trp and L-His) via synergistic coordination interaction between target ions/amino acids and pre-assembling metal ions in OGMs . Therefore, a six-membered anion and amino acid sensor array based on supramolecular metallogels ( OGMs ) was successfully constructed. Moreover, anion/amino acid responsive films based on supramolecular metallogels ( OGMs ) were prepared, which could be used as fluorescence anti-counterfeiting and encryption materials. Therefore, the supramolecular metallogels will be of great application value in the detection of anions and amino acids and as smart materials. Metallogel-based six membered sensor arrays show applications in multi-analyte detection and fluorescence encryption.
ISSN:1144-0546
1369-9261
DOI:10.1039/d2nj02992h