Facile and large scale in situ synthesis of the thermal responsive fluorescent SiNPs/PNIPAM hydrogels

Xiao-Yan Zhang; Yan Zheng; Chun-Hua Liu; Ping-Hua Wang; Yuan-Yuan Zhu

doi:10.1039/C6RA09534H

Facile and large scale in situ synthesis of the thermal responsive fluorescent SiNPs/PNIPAM hydrogels

Xiao-Yan Zhang,^a Yan Zheng,^a Chun-Hua Liu,*^a Ping-Hua Wang^a and Yuan-Yuan Zhu*^a

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* Corresponding authors

^a School of Chemistry and Chemical Engineering, Hefei University of Technology, Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei 230009, China
E-mail: lchh88@hfut.edu.cn, yyzhu@hfut.edu.cn

Abstract

We herein report the synthesis of fluorescent silicon nanoparticles (F-SiNPs) with uniformly small sizes and stable fluorescence, and further preparation of F-SiNPs/poly(N-isopropylacrylamide) (F-SiNPs/PNIPAM) composite hydrogels by in situ polymerization. This type of hydrogel displayed visible thermal-sensitive phase transition properties. Upon heating, the fluorescence intensity of the hydrogels decreased sharply beyond the lower critical solution temperature (LCST) of PNIPAM. The process of fluorescence quenching and recovery was reversible after repeated heating and cooling cycles. This result suggests that the present organic/inorganic hybrid F-SiNPs/PNIPAM hydrogels will have potential applications in visual detection as fluorescence-based temperature sensors.

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Publication details

The article was received on 13 Apr 2016, accepted on 26 May 2016 and first published on 27 May 2016

Article type: Paper

DOI: 10.1039/C6RA09534H

Author version available: Download Author version (PDF)

Citation: RSC Adv., 2016,6, 55666-55670

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Facile and large scale in situ synthesis of the thermal responsive fluorescent SiNPs/PNIPAM hydrogels

X. Zhang, Y. Zheng, C. Liu, P. Wang and Y. Zhu, RSC Adv., 2016, 6, 55666
DOI: 10.1039/C6RA09534H
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Facile and large scale in situ synthesis of the thermal responsive fluorescent SiNPs/PNIPAM hydrogels

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Facile and large scale in situ synthesis of the thermal responsive fluorescent SiNPs/PNIPAM hydrogels

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