Structure-Dependent Electron Affinities of Perylene Diimide-Based Acceptors,The Journal of Physical Chemistry C

当前位置： X-MOL 学术 › J. Phys. Chem. C › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Structure-Dependent Electron Affinities of Perylene Diimide-Based Acceptors
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-04-14 , DOI: 10.1021/acs.jpcc.0c01743
Ai Sugie ₁ , Weining Han ₁ , Nobutaka Shioya ₂ , Takeshi Hasegawa ₂ , Hiroyuki Yoshida _{1,

3}

Affiliation

Perylene dyes are a representative framework of electron transport (n-type) organic semiconductors. The energy of their electron transport level is the electron affinity (EA), which is an important parameter in selecting the electron transport materials for device application and of the material’s electron-accepting ability. Recent studies show that EA may vary by as much as 1 eV depending on the molecular orientation owing to the electrostatic potential generated by the quadrupole moments. Because perylene dyes have a large quadrupole moment, it is essential to discuss EA combined with the molecular orientation in the sample film. In this work, we determine the EAs of perylene diimide derivatives in the solid phase using low-energy inverse photoelectron spectroscopy (LEIPS), which was developed by one of the authors. By changing the substrate and the alkyl-chain length, we systematically investigate the relationship between EA and molecular arrangement in the film to derive the general trend of the EA of perylene dyes. The results show that most of the perylene dyes’ EAs are in the range from 3.7 to 4.0 eV.

中文翻译：

Per二酰亚胺基受体的结构依赖性电子亲和力

ylene染料是电子传输（n型）有机半导体的代表性框架。它们的电子传输能级的能量是电子亲和力（EA），这是选择用于器件应用的电子传输材料以及该材料的电子接受能力的重要参数。最近的研究表明，由于四极矩产生的静电势，根据分子的方向，EA可能相差1 eV。由于per染料具有较大的四极矩，因此必须结合样品膜中的分子取向来讨论EA。在这项工作中，我们使用作者之一开发的低能逆光电子能谱法（LEIPS）确定了固相中per二酰亚胺衍生物的EA。通过改变底物和烷基链的长度，我们系统地研究了EA与膜中分子排列之间的关系，从而得出per染料的EA的总体趋势。结果表明，大多数the染料的EA范围为3.7至4.0 eV。

更新日期：2020-04-14

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南