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新型非完全化环小分子受体:终端封闭修改调查

Minmin Chen¹, Jinglin Liu¹, Yajie Cao¹

¹College of Science, Jiamusi University, Jiamusi 154007, Heilongjiang, China.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

|February 17, 2024

概括

设计具有端盖修改的新型小分子接受器显著提高有机太阳能电池性能. 功能组替代和终端化提高了电子接受能力和移动性,为高效的太阳能能量转换创造了有前途的材料.

科学领域:

材料科学材料科学材料科学
有机电子有机电子
太阳能光伏发电是如何实现的

背景情况:

最终封闭的修改是高性能有机受体材料的关键策略.
IDTBT-4F (R) 分子作为开发新受体的参考.

研究的目的:

研究基于IDTBT-4F (R) 结构的五种新型小分子受体 (R1-R5).
评估终端功能组修改对分子性质和性能的影响.
探索这些设计分子在有机太阳能电池应用中的潜力.

主要方法:

密度函数理论 (DFT) 的计算,特别是B3PW91/6-31G (d,p) 对基态结构的计算.
使用MPW1PW91/6-31G (d,p) 进行时间依赖的DFT (TD-DFT) 计算,用于吸收光谱.
分析电荷密度差异和过渡密度矩阵.
对分子二次体的电子流动性的计算.

主要成果:

与参考分子 (R) 相比,所有设计的分子 (R1-R5) 具有更窄的能量差距,红移吸收光谱和增强的电子接受能力.
功能组替代证明在改善这些参数方面比素替代更有效.
终端 π 延伸和终端组化协同提高分子性能.
分子R1,R4 (具有-COOCH3替换) 和R2 (具有终端化) 由于增强的电子合,显示出优越的电子流动性.

结论:

设计的小分子接受器在关键的电子和光学性能上显著改进.
通过终端封闭进行功能组工程是优化受体材料的可行策略.
这些新型分子是高效有机太阳能电池应用的有希望的候选者.

关键词:

在 DFT 方面,它是最重要的.终端封顶的修改修改非完全化的环接收器.有机太阳能电池有机太阳能电池

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