Relationship between crystal structure and optical properties in light blueand green-emitting crystal polymorphs of butyl group-substituted thiophene/phenylene co-oligomer: Fabrication of crystals and their lasing properties

被引：0

作者：

Mizuno, H. ^{[1
]}

Jinjyo, T. ^{[1
]}

Sasaki, F. ^{[2
]}

机构：

[1] Nara Inst Sci & Technol NAIST, Grad Sch Sci & Technol, 8916-5 Takayama, Nara 6300192, Japan

[2] Univ Tsukuba, Fac Pure & Appl Sci, Dept Mat Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058573, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2024年 / 842卷

关键词：

Crystal polymorphs; Crystal structure; Thiophene/phenylene co-oligomer; Lasing; Solution-growth technique; SINGLE-CRYSTALS; STIMULATED-EMISSION; MECHANOCHROMISM; FILMS;

D O I：

10.1016/j.cplett.2024.141203

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：

Light-blue (monoclinic) and green (orthorhombic) crystal polymorphs comprising a butyl group-substituted thiophene/phenylene co-oligomer, BP1T-Bu, were prepared by varying the crystal growth conditions with a solution-growth technique. The light-blue- and green-emitting crystals exhibited Fabry - Pe <acute accent>rot lasing above the excitation density of 204 and 277 mu J/cm 2 based on high group refractive indices and quality factors, respectively. The higher threshold in the green-emitting crystal originates from the lower absorption efficiency of the excitation light, in addition to the lower amount of absorption owing to the smaller thickness of the crystal.

引用

页数：8