Design and intelligent colour regulation of luminescent silk chemically bonded with Eu(III) and Eu(III)/Tb(III)

被引:2
作者
Xiao, Xingfang
Ren, Lipei
Zhang, Yawei
Zhang, Qian
Zhao, Sanping
Liu, Ruina
Xu, Weilin
机构
[1] College of Material Science and Engineering, Wuhan Institute of Technology, Wuhan
[2] State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan
[3] Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science a
基金
中国国家自然科学基金;
关键词
ADSORPTION-KINETICS; HIGHLY LUMINESCENT; AQUEOUS-SOLUTIONS; IN-VITRO; LANTHANIDE; NANOCLUSTERS; PROTEINS; FLUORESCENCE; FIBERS; IONS;
D O I
10.1111/cote.12345
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Design and successful synthesis of a series of novel luminescent silk chemically modified with europium(III) [Eu(III)] and europium(III)/terbium(III) [Eu(III)/Tb(III)] is reported. The modified silk specimens were characterised by infrared spectroscopy, fluorescence spectroscopy, scanning electron microscopy, and evaluated for their colour fastness. The rare earth ions were linked to the silk fibre via chemical bonds with the aid of tetracarboxylic acids used as the bridging ligands. Therefore, the modified silk had excellent luminescent stability and colour fastness to water and sunlight. Based on the blue fluorescence of silk along with the red and green luminescence of Eu(III) and Tb(III), respectively, under ultraviolet irradiation intelligent colour regulation was easily achieved by adjusting either the amount of Eu(III) or the ratio of Eu(III)/Tb(III). The Commission International de l'Eclairage chromaticity co-ordinates calculated from the emission spectra also confirm the colour changes. Benefiting from the tunable colour and high stability, the modified silk could be an excellent candidate for applications in anti-counterfeiting and flexible tunable light- emitting materials.
引用
收藏
页码:373 / 380
页数:8
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