Phenothiazine based co-crystals with enhanced luminescence

被引：14

作者：

Marin, Luminita ^{[1
]}

Bejan, Andrei ^{[1
]}

Shova, Sergiu ^{[1
]}

机构：

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

来源：

DYES AND PIGMENTS | 2020年 / 175卷

关键词：

Phenothiazine; Co-crystals; Halogen bonds; Quantum efficiency; Miscibility; DIRECTED FUNCTIONAL-PROPERTIES; ORGANIC SOLID-STATE; COCRYSTALS; EFFICIENT; EMISSION; DERIVATIVES; POLYMERS; HYBRIDS; DESIGN; FORMS;

D O I：

10.1016/j.dyepig.2019.108164

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of binary phenothiazine based co-crystals were designed with the aim to reach materials with improved quantum efficiency in solid state. To this end, a host dibromine functionalized phenothiazine was mixed with a guest formyl based phenothiazine in various molar ratios, from 1:1 up to 1:9, to form single crystals and thin films as well. Single crystal X-ray diffraction, polarized light microscopy, H-1 NMR and FTIR spectroscopies indicated the successful formation of supramolecular synthons via halogen bonds. Polarized light microscopy and atomic force microscopy indicated the formation of submicrometric crystals into the co-crystal films. The photophysical behaviour was investigated by UV-vis and photoluminescence spectroscopies, and showed a remarkable improvement of the quantum yield, reaching values of 27% for single co-crystals and of 42% for thin films of nano-co-crystals.

引用

页数：9

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