Engineering Quantum Dots with Ionic Liquid: A Multifunctional White Light Emitting Hydrogel for Enzyme Packaging
authors Shet, SM; Bisht, M; Pramanik, S; Roy, S; Kumar, TS; Nataraj, SK; Mondal, D; Bhandari, S
nationality International
journal ADVANCED OPTICAL MATERIALS
author keywords cytochrome C; hydrogels; ionic liquids; quantum dots; white light emissions
keywords CYTOCHROME-C; EMISSION; EXCHANGE
abstract Herein, a new and straightforward approach for the fabrication of a stable and multifunctional white light emitting (WLE) hydrogel is reported. For the first time, the utility of such hydrogels for protein packaging with enhanced activity and stability is presented. Initially, a WLE composite with color chromaticity of (0.33, 0.27) is fabricated by engineering the surface of an orange light emitting Mn2+-doped ZnS quantum dot (QD) using a blue-emitting choline-tosylate ionic liquid (IL). The color chromaticity can be tuned by altering the concentration of the IL and excitation wavelengths. The WLE hydrogel is constructed through the conjugation of the WLE QD-IL composite with an alginate biopolymer. Remarkably, the WLE QD-IL composite and WLE hydrogel show preservation of their structural and luminescence properties for an extended time and thus indicate a potential for storage applications. When cytochrome c (Cyt C) is caged within the WLE hydrogel matrix, the peroxidase activity increases by more than 1.7-times compared with native Cyt C and a Cyt C-loaded QD hydrogel at room temperature. Also, Cyt C-immobilized WLE hydrogel shows a 3.5-fold increase in activity (compared with native Cyt C) at a higher temperature (120 degrees C) and in the presence of a denaturation agent.
publisher WILEY-V C H VERLAG GMBH
issn 2195-1071
year published 2020
volume 8
issue 8
digital object identifier (doi) 10.1002/adom.201902022
web of science category Materials Science, Multidisciplinary; Optics
subject category Materials Science; Optics
unique article identifier WOS:000513563400001
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  impact metrics
journal analysis (jcr 2019):
journal impact factor 8.286
5 year journal impact factor 8.224
category normalized journal impact factor percentile 91.353
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