Phenothiazine based nanocrystals with enhanced solid state emission

被引：5

作者：

Bejan, Andrei ^{[1
]}

Marin, Luminita ^{[1
]}

机构：

[1] Romanian Acad, Petru Poni Inst Macromol Chem, Iasi, Romania

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2018年 / 265卷

关键词：

Phenothiazine; Nanocrystals; Efficient luminescence; Polymethylmethacrylate; Polyfluorene; INTRAMOLECULAR CHARGE-TRANSFER; LIQUID-CRYSTALS; PHOTOPHYSICAL PROPERTIES; X-RAY; POLYMERS; MATRIX; FILMS; DYE; DERIVATIVES; MOLECULES;

D O I：

10.1016/j.molliq.2018.05.125

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The paper focuses on the preparation of phenothiazine based nanoparticles, both in liquid and solid states, by reprecipitation in water and solvent induced phase separation respectively. Polymethylmethacrylate was used as an inert matrix and polyfluorene as a luminescent matrix. The morphological features of the nanoparticles were investigated by dynamic light scattering, and SEM, AFM and POM microscopy, which revealed their supra molecular ordering as nanocrystals. Their photophysical behaviour was monitored by UV-vis and photoluminescence spectroscopy. The nanocrystals emitted green light, with higher efficiency compared to the bulk crystals, reaching an absolute quantum yield of 35% in water, 45% in polymethylmethacrylate, and 39% in polyfluorene. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：299 / 306

页数：8

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