期刊
NATURE COMMUNICATIONS
卷 7, 期 -, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/ncomms11637
关键词
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资金
- National Natural Science Foundation of China [21290190, 21322301, 91227113]
- NSFC-DFG joint fund [21261130581]
- National Basic Research 973 Program of China [2012CB932901]
- 'Strategic Priority Research Program' of the Chinese Academy of Sciences [XDA09020302, XDB12010300]
Thermodynamic stabilization (pi-electron delocalization through effective conjugation) and kinetic stabilization (blocking the most-reactive sites) are important considerations when designing stable polycyclic aromatic hydrocarbons displaying tunable optoelectronic properties. Here, we demonstrate an efficient method for preparing a series of stable two-dimensional (2D) twisted dibenzoterrylene-acenes. We investigated their electronic structures and geometries in the ground state through various experiments assisted by calculations using density functional theory. We find that the length of the acene has a clear effect on the photophysical, electrochemical, and magnetic properties. These molecules exhibit tunable ground-state structures, in which a stable open-shell quintet tetraradical can be transferred to triplet diradicals. Such compounds are promising candidates for use in nonlinear optics, field effect transistors and organic spintronics; furthermore, they may enable broader applications of 2D small organic molecules in high-performance electronic and optical devices.
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