A turn-on type stimuli-responsive fluorescent dye with specific solvent effect: Implication for a new prototype of paper using water as the ink

被引:15
作者
Hu, Xiaochen [1 ]
Liu, Yang [2 ]
Duan, Yuai [1 ]
Han, Jingqi [1 ]
Li, Zhongfeng [1 ]
Han, Tianyu [1 ]
机构
[1] Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
[2] Beijing Res Ctr Radiat Applicat, Beijing Key Lab Radiat Adv Mat, Beijing 100015, Peoples R China
基金
中国国家自然科学基金;
关键词
Water-based ink; Water-sensitive; Fluorescent dye; Solvent effect; Paper; AGGREGATION; NANOPARTICLES; LUMINESCENCE; ENHANCEMENT;
D O I
10.1016/j.saa.2017.04.079
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
In this study, we reported the photoluminescence (PL) behaviour of a new intramolecular charge transfer (ICI') compound, ((E)-2-( ((2-hydroxynaphthalen-l-yl)methylene)amino)benzoic acid, (HABA), which shows 10' solvent effect in aprotic solvents as confirmed by absorption and emission spectra. While in protic solvents including water and ethanol, the charge transfer (CT) band significantly reduces. Remarkable fluorescence enhancement in the blue region was also observed for HABA in polar protic solvents. We described such phenomena as "specific solvent effect". It can be ascribed to the hydrogen bonding formation between HABA and protic solvents, which not only causes significant reduction in the rate of internal conversion but also elevates the energy gap. Density functional theory (DFF) calculations as well as the dynamics analysis were performed to further verify the existence of hydrogen bonding complexes. Stronger emission turn-on effect was observed on HABA solid film when it is treated with water and base solution. The stimuli-responsive fluorescence of HABA enables a new green printing technique that uses water/base as the ink, affording fluorescent handwritings highly distinct from the background. Thermoanalysis of the dye suggests the nice thermostability, which is highly desired for real world printing in a wide temperature range. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:7 / 12
页数:6
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