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1. 南阳理工学院 电子与电气工程系, 河南 南阳 473004,E-mail: chenlanli@yahoo.com.cn
2. 南阳理工学院 机电工程系,河南 南阳,473004
收稿日期:2009-01-23,
修回日期:1900-01-02,
网络出版日期:2009-08-30,
纸质出版日期:2009-08-30
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陈兰莉;汤中科. 香蕉型液晶的电子结构计算和电激发特性[J]. 液晶与显示, 2009,24(04): 478-481
CHEN Lan-li;TANG Zhong-ke. Electronic Structure and Electron Transition of Banana-Shaped Liquid Crystals[J]. 液晶与显示, 2009,24(04): 478-481
用舒克紧束缚法计算了一种新型香蕉型液晶1
3-phenylene bis benzoate 的电子结构
结果表明: LUMO和HOMO的能量差别主要是受到香蕉型液晶的中心核、桥键(COO)的影响
而烷基尾对香蕉型液晶电子结构的影响不大;在6种可能跃迁中
只有能量最低的两种(
*
n
*
)在200~800 nm可见光范围内是经常发生的。对于这种香蕉型液晶
电子激发主要发生在4.0 eV (310 nm)和 1.7 eV (730 nm)处。
The electronic structures of the banana-shaped liquid crystal 1
3-phenylene bis benzoate were calculated with Hckel tight-binding method. The effects of the central core
the linkages and the alkyl tails in the two-branched legs of the banana-shaped liquid crystal were discussed. Among the six transitions outlined
only the two lowest energy ones (
*
n
*
) are often achieved by the energies available in the 200~800 nm spectrum. Energetically favoured electron excitation will take place at 4.0 (310 nm) and 1.7 eV (730 nm)
respectively
for the studied molecule.
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