Glow discharge electrolysis plasma initiated synthesis of upconversion luminescent and temperature sensitive multifunctional hydrogel. Issue 3 (3rd July 2018)

• Record Type: Journal Article
• Authors: Zhang, Wenming; Miao, Wenfang; Yue, Ziwei; Liu, Sichen; Li, Ling; Zhang, Zisheng; Wang, Hong
• Is Part Of: Soft materials. Volume 16:Issue 3(2018)
• Page Start: 192
• Page End: 200
• Publication Date: 2018-07-03
• Subjects: Hemicellulose -- hydrogel -- luminescence -- temperature sensitivity -- upconversion; Materials science -- Periodicals; 620.11
• DOI: 10.1080/1539445X.2018.1470536
• Languages: English
• ISSNs: 1539-445X

Abstract

ABSTRACT: In the present work, a novel multifunctional hydrogel that simultaneously possesses strong upconversion luminescence (UL) and temperature responsibility was fabricated based on the crosslinking of hemicellulose and ricinoleic acid capped NaYF4 :Yb/Er in the presence of Poly (N-isopropylacrylamide) (PNIPAM) and polyacrylamide (PAAm) aqueous solution by using glow discharge electrolysis plasma (GDEP) initiated technique. Its structure and properties were characterized by wide angle X-ray diffraction, FT-IR spectra, scanning electron microscopy, transmission electron microscope and fluorescence spectra. The obtained hydrogel exhibited reversibly temperature-dependent UL and highly enhanced sensibility. The luminescence intensity and transmittance of hydrogel showed a sharp decrease in the range of 32–35°C. Furthermore, the luminescence intensity of hydrogel was almost not weakened after five heating-cooling cycles, which may allow their use in remote control thermosensitive switch.