Polarized measurements of spectrally narrowed emissions from a single crystal of a thiophene/phenylene co-oligomer
Polarized measurements of spectrally narrowed emissions from a single crystal of a thiophene/phenylene co-oligomer
复制标题
DOI：
10.1063/1.2719011
复制
发表时间：
2007-04
影响因子：
3.2
通讯作者：
T. Yamao;Takayuki Ohira;S. Ota;S. Hotta
中科院分区：
文献类型：
--
作者：
T. Yamao;Takayuki Ohira;S. Ota;S. Hotta
通过一系列偏振测量，研究了噻吩/苯基共聚物扁平单晶的光谱窄化发射（SNE）。SNE光谱包括在507和514 nm处的两条主要谱线。其中，前者通过沿c轴偏振的脉冲激光激发有效地使发射增益变窄。SNE的强度沿平行于bc平面的平面径向方向几乎是各向同性的。SNE沿a轴呈强极化，其发射偏振比为16.7。这些极化SNEs可以通过分子长轴平行于a轴的直立构型来理解。
The spectrally narrowed emissions (SNE) from a flat single crystal of a thiophene/phenylene co-oligomer were investigated in a series of polarized measurements. The SNE spectra comprise of two major lines occurring at 507 and 514 nm. Of these, the former line effectively causes the emission gain narrowing by the pulse laser excitation polarized along the c axis. The intensity of the SNE is nearly isotropic with the radial directions along the flat crystal plane paralleling the bc plane. The SNE is strongly polarized along the a axis with its emission polarization ratio of the a axis to the b axis being 16.7. These polarized SNEs can be understood by the upright configuration of the molecular long axis paralleling the a axis.