Fullerene/cobalt porphyrin charge-transfer cocrystals: Excellent thermal stability and high mobility

Fullerene/cobalt porphyrin charge-transfer cocrystals: Excellent thermal stability and high mobility
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富勒烯/钴卟啉电荷转移共晶:优异的热稳定性和高迁移率

DOI:
10.1007/s12274-017-1809-7
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发表时间:
2018-03
期刊:
影响因子:
9.9
通讯作者:
Lu Xing
Lu Xing
中科院分区:
材料科学1区
文献类型:
--
作者:
Zheng Shushu;Zhong Junwen;Matsuda Wakana;Jin Peng;Chen Muqing;Akasaka Takeshi;Tsukagoshi Kazuhito;Seki Shu;Zhou Jun;Lu Xing

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尽管具有高迁移率和热稳定性的有机半导体在实际应用中特别理想,但用于其开发的简便方法仍然是一个很大的挑战。本文采用溶液共组装法制备了富勒烯(C-70)/钴卟啉超分子结构的电荷转移共晶。该超分子结构显示出高达4.21 cm(2).V-1.s(-1)的空穴迁移率,并且即使在1,000 A ℃下热处理后也显示出0.02 cm(2).V-1.s(-1)的相对高的迁移率。进一步的研究证实了5,10,15,20-四(4-甲氧基苯基)卟啉合钴(II)(CoTMPP)与C-70之间的电荷转移以及超分子体系中的顺磁性。这些因素被认为是上述上级性能的原因。因此,在这项工作中,一个新的有机半导体已被报道,它可以潜在地用于下一代电子器件。此外,它已被证明,电荷转移共结晶是一个强大的策略,合理的设计和建设的一个广泛的新的多功能有机共晶材料。
Although organic semiconductors with high mobility and thermal stability are particularly desirable for practical applications, facile methods for their development still remains a big challenge. In this work, a charge-transfer cocrystal based on fullerene (C-70)/cobalt porphyrin supramolecular architecture was prepared by a solution-processable co-assembly strategy. This supramolecular architecture showed hole mobility as high as 4.21 cm(2).V-1.s(-1), and a relatively high mobility of 0.02 cm(2).V-1.s(-1) even after thermal treatment at 1,000 A degrees C. Further studies confirmed the occurrence of charge-transfer from 5,10,15,20-tetrakis(4-methoxyphenyl)porphyrinato cobalt(II) (CoTMPP) to C-70 and the paramagnetic character within the supramolecular system. These factors were found to be responsible for the aforementioned superior performances. Thus, a novel organic semiconductor has been reported in this work, which can be potentially used for next generation electronic devices. Furthermore, it has been demonstrated that charge-transfer co-crystallization is a powerful strategy for the rational design and construction of a broad class of new multifunctional organic co-crystalline materials.
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