Issue 39, 2024

d-(+)-Glucose triggered selective hydrometallogelation in a C3-symmetric gelator

Abstract

A chiral and conductive hydrometallogel was synthesized using dynamic boronic acid-cis diol chemistry. A novel tris-boronic acid-functionalized C3-symmetric gelator (MB) was obtained from a trimesic acid derivative, which upon deprotonation (MOH, M = Li, Na, K, and Cs), followed by addition of D-(+)-glucose, triggered hydrometallogel formation. Gel formation was highly selective to D-(+)-glucose among all the screened sugars. To the best of our knowledge, D-(+)-glucose-triggered hydrometallogel formation using a C3-symmetric tris-boronic acid-derived gelator has not been reported. D-(+)-Glucose-triggered gelation was comprehensively investigated using FTIR spectroscopy, UV-vis spectroscopy, circular dichroism, FESEM, 1H NMR spectroscopy, ESI-mass spectrometry, rheology and electrochemical impedance spectroscopy techniques. A reasonably high yield stress (6000 Pa) value was achieved for 5 wt% gel, supporting the observation of the interesting mechanical properties and robust nature of gels. Moreover, impedance spectroscopic study revealed an appreciable conductance value of 2.67 × 10−2 S cm−1, which could be further improved to 8.90 × 10−2 S cm−1 by adding excess LiOH into the gel matrix without compromising its metallogel structural integrity.

Graphical abstract: d-(+)-Glucose triggered selective hydrometallogelation in a C3-symmetric gelator

Supplementary files

Article information

Article type
Paper
Submitted
19 Feb 2024
Accepted
28 Aug 2024
First published
28 Aug 2024

J. Mater. Chem. C, 2024,12, 16156-16162

D-(+)-Glucose triggered selective hydrometallogelation in a C3-symmetric gelator

M. Mukherjee, Y. Kumar, A. Kalam and M. Dubey, J. Mater. Chem. C, 2024, 12, 16156 DOI: 10.1039/D4TC00655K

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