Journal
POLYMERS
Volume 11, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/polym11071171
Keywords
temperature-sensitive hydrogel; green-emissioned carbon dots; preparation of hydrogel; fluorescence ink
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Funding
- Natural Science Foundation of Hubei Province [2016CFB615]
- South-Central University for Nationalities [CZY19029]
- Academic Team of the South-Central University for Nationalities [XTZ15013]
- China Scholarship Council
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Fluorescence/temperature-sensitive hydrogels, thanks to their properties in fluorescence and temperature sensitivity, have shown a promising outlook in the fields of drug delivery, cell imaging, etc., and thus become the focus of present research. This paper reports the preparation of green-fluorescence/temperature-sensitive hydrogels through one-step radical polymerization with green fluorescence-emissioned carbon dots as fluorescence probes and N-isopropylacrylamide as a monomer. UV-vis spectra, fluorescence spectra, and fluorescence microscope imaging have been used to characterize the prepared hydrogel, and to study their optical and temperature-sensitive properties. It was discovered that the emission of prepared hydrogel is excitation wavelength-dependent, pH responding, and excellent temperature-sensitive, as well as having good biocompatibility. The prepared hydrogel can also be applied as fluorescence ink in the fields of anti-counterfeit identification and appraisal.
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