Herein we report the design, synthesis and characterization of a novel material, (5Z,5′Z,5′′Z,5′′′E)-5,5′,5′′,5′′′-(((ethene-1,1,2,2-tetrayltetrakis(benzene-4,1-diyl))tetrakis(thiophene-5,2-diyl))tetrakis(methanylylidene))tetrakis(4-methyl-1-octyl-2,6-dioxo-1,2,5,6-tetrahydropyridine-3-carbonitrile) (TPE-CP4), which was generated using a combination of tetraphenylethylene and cyanopyridone functionalities. The tetraphenylethylene unit was terminally functionalized with cyanopyridone in order to generate a three-dimensional molecular architecture. The new material TPE-CP4 was produced via a Knoevenagel condensation reaction and was found to be highly soluble in a variety of common organic solvents, such as chloroform and o-dichlorobenzene. TPE-CP4 exhibited promising optoelectronic properties and energy levels complementing those of the conventional donor polymers poly(3-hexylthiophene) [P3HT] and Poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl}) [PTB7]. Due to its optoelectronic properties, solubility and good film forming capability, TPE-CP4 was incorporated as an n-type semiconducting component along with the commercially available P3HT and PTB7 as the p-type semiconductors in BHJ photovoltaic devices. TPE-CP4 performed very well with both of the donor polymers and afforded 6.02% and 6.72% power conversion efficiencies with P3HT and PTB7, respectively. Not only is TPE-CP4 the first reported example combining tetraphenylethylene and cyanopyridone structural units, but the device performance indicates that it is an efficient non-fullerene acceptor.

中文翻译：

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氰基吡啶酮位于四苯基乙烯的侧面，可生成高效的三维小分子非富勒烯电子受体

本文我们报告的设计，合成和新材料的表征，（5 Ž，5' Ž，5'' Ž，5''' ë）-5,5-'，5''，5''' - （（ （乙烯-1,1,2,2-四基四（苯-4,1-二基））四（噻吩-5,2-二基）四（亚甲基）四（4-甲基-1-辛基-2，使用四苯基乙烯和氰基吡啶酮官能团的组合生成的6-二氧-1,2,5,6-四氢吡啶-3-甲腈（TPE-CP4）。为了产生三维分子结构，将四苯基乙烯单元用氰基吡啶酮末端官能化。新材料TPE-CP4是通过以下方式生产的进行Knoevenagel缩合反应，发现它可高度溶于各种常见的有机溶剂，例如氯仿和邻二氯苯。TPE-CP4展现出有希望的光电性能和能级，与传统的施主聚合物聚（3-己基噻吩）[P3HT]和聚（{4,8-双[（2-乙基己基）氧基]苯并[1,2- b ] ：4,5 - b ']二噻吩-2,6-二基} {3-氟-2-[（2-乙基己基）羰基]噻吩并[3,4- b ]噻吩二基}）[PTB7]。由于其光电特性，溶解性和良好的成膜能力，TPE-CP4在BHJ光伏器件中，作为有机物的P3HT和PTB7与P3HT和PTB7一起作为n型半导体组分掺入。TPE-CP4在两种供体聚合物下均表现出色，并且P3HT和PTB7分别提供6.02％和6.72％的功率转换效率。TPE-CP4不仅是第一个报道的结合四苯基乙烯和氰基吡啶酮结构单元的实例，而且器件性能表明它是一种有效的非富勒烯受体。