Journal
NANO RESEARCH
Volume 11, Issue 4, Pages 1917-1927Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-017-1809-7
Keywords
organic semiconductor; fullerene/porphyrin; thermal stability; mobility; charge-transfer
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Funding
- National Thousand Talents Program of China
- National Natural Science Foundation of China [51472095, 51602112, 51672093, 21103224]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1014]
- Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University)
- Ministry of Education
- Japan Society for the Promotion of Science (JSPS) [JP16F16360, 26102011, 26249145, 15K21721]
- Grants-in-Aid for Scientific Research [17K05797, 26102011, 16F16360] Funding Source: KAKEN
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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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