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A photochromic long persistent luminescent polyurethane based on colour conversion process

Abstract

Photochromic long persistent luminescent polyurethane (PLPLPU) was prepared via incorporating amino-functionalized phosphors (NH2-SrAl2O4: Eu2+, Dy3+) and red fluorescers 1-[(2-hydrocyethly)amino]anthraquinone (HAA) based on colour conversion process. X-Ray Diffraction (XRD), UV-vis absorption spectroscopy (UV), thermogravimetic analysis (TG), fluorescence spectrophotometer and afterglow brightness tester as well as the percentage of migration test were utilized to characterize the structure and properties of the resultant samples. The photoluminescence emission spectrum of phosphors is overlapped with the excitation spectrum of HAA, which demonstrates HAA can be selected as colour conversion agent and be excited by posphors in darkness. PLPLPU presents red in daylight and yellow in darkness, showing pleasant photochromic long persistent luminescen effect. Furthermore, HAA in PLPLPU was confirmed to have better thermal migration stability then the blend samples due to the chemical combination.

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Publication details

The article was received on 18 Jul 2017, accepted on 08 Nov 2017 and first published on 09 Nov 2017


Article type: Paper
DOI: 10.1039/C7NJ02607B
Citation: New J. Chem., 2017, Accepted Manuscript
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    A photochromic long persistent luminescent polyurethane based on colour conversion process

    S. Tian, H. Fan, Y. Chen, J. Yan, J. Sun and D. Qin, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ02607B

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