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EDOT-Type Materials:Planar but Not Rigid

机译:EDOT型材料:平面但非刚性

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摘要

The geometrical,electronic and optical properties of alpha,alpha'-quater(3,4-ethylenedioxythiophene)(4EDOT)and alpha,alpha'-quater(thiophene)(4T)are studied by quantum-chemical calculations;the computed vibronic spectra at low and room temperature(RT)are compared to experiment.Our results suggest that the better resolved RT absorption spectrum of 4EDOT in comparison with 4T is not due to the molecule's rigid nature as commonly assumed but due to very similar out-of-plane modes in the electronic ground and first excited states of 4EDOT,with low frequencies indicative of its rather soft nature.
机译:通过量子化学计算研究了α,α'-四(3,4-乙撑二氧噻吩)(4EDOT)和α,α'-四(噻吩)(4T)的几何,电子和光学性质;我们的结果表明4EDOT与4T相比解析度更好的RT吸收光谱不是由于通常假定的分子刚性,而是由于非常相似的面外模式在4EDOT的电子基态和首次激发态中,低频表示其相当柔软。

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