Synthesis and properties of photochromic spirooxazine with aggregation-induced emission fluorophores polymeric nanoparticles

被引：42
作者：
Li, Xue [1 ,2 ]
Li, Chengpeng [2 ]
Wang, Sheng [1 ,2 ]
Dong, Huan [3 ,4 ]
Ma, Xiang [3 ,4 ]
Cao, Derong [1 ]
机构：
[1] South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Guangdong, Peoples R China
[2] Lingnan Normal Univ, Dev Ctr New Mat Engn & Technol Univ Guangdong, Sch Chem & Chem Engn, Zhanjiang 524048, Peoples R China
[3] East China Univ Sci & Technol, Key Lab Adv Mat, Meilong Rd 130, Shanghai 200237, Peoples R China
[4] East China Univ Sci & Technol, Inst Fine Chem, Meilong Rd 130, Shanghai 200237, Peoples R China
来源：
DYES AND PIGMENTS | 2017年 / 142卷
关键词：
Spirooxazine dye; Photochromism; Polymeric nanoparticles; Aggregation-induced emission; Tetraphenylethylene derivative; CARBAZOLE-SPIRONAPHTHOXAZINE COPOLYMER; POLY(N-ISOPROPYLACRYLAMIDE) HYDROGEL; SWITCHING PROPERTIES; FLUORESCENT-PROBE; DERIVATIVES; DYE; ENHANCEMENT; MOLECULES; MEMORIES; CRYSTALS;
D O I：
10.1016/j.dyepig.2017.03.068
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
We designed and synthesized photochromic fluorescent poly (MMA-co-SPO-co-TPE) nanoparticles with pendant spirooxazine (SPO) dye and tetraphenylethylene (TPE) fuorophores attached to poly (methyl methacrylate) (MMA) backbone by semi-continuous polymerization. The polymerization reactions were accomplished in water with randomly methylated-fi-cyclodextrin (beta-CD) at 80 degrees C in the presence of potassium peroxodisulfate which can be.used as free radical initiator. This new synthetic method leads to uniform and smooth nanoparticles with a narrow particle size distribution. In addition, the poly (MMA-co-SPO-co-TPE) nanoparticles exhibit aggregation induced emission (ME) properties and excellent photochemical properties because of spirooxazine dyes convert reversibly to merocyanine form upon ultraviolet (UV) irradiation, which active the intramolecular energy transfer pathway and quench the fluorescence of TPE in polymers. Consequently, the fluorescence of the poly (MMA-co-SPO-co-TPE) nanoparticles can be reversibly switched "on" and "off' upon UV and visible light, which maybe have potential application in biological fluorescent labeling as well as in optical fields like individually light-addressable nanoscale devices. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：481 / 490
页数：10
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