Nanographenes as electron-deficient cores of donor-acceptor systems.
Nanographenes as electron-deficient cores of donor-acceptor systems.
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纳米石墨烯作为供体-受体系统的缺电子核心
DOI:
10.1038/s41467-018-04321-6
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发表时间:
2018-05-15
影响因子:
16.6
通讯作者:
Müllen K
中科院分区:
文献类型:
--
作者:
Liu YM;Hou H;Zhou YZ;Zhao XJ;Tang C;Tan YZ;Müllen K
Conjugation of nanographenes (NGs) with electro-active molecules can establish donor-acceptor π-systems in which the former generally serve as the electron-donating moieties due to their electronic-rich nature. In contrast, here we report a series of reversed donor-acceptor structures are obtained by C–N coupling of electron-deficient perchlorinated NGs with electron-rich anilines. Selective amination at the vertexes of the NGs is unambiguously shown through X-ray crystallography. By varying the donating ability of the anilino groups, the optical and assembly properties of donor-acceptor NGs can be finely modulated. The electron-deficient concave core of the resulting conjugates can host electron-rich guest molecules by intermolecular donor-acceptor interactions and gives rise to charge-transfer supramolecular architectures. Nanographenes in donor-acceptor π-systems generally serve as electron-donating moieties but the reversed structures are hardly reported. Here, the authors present a facile synthetic protocol towards reversed donor-acceptor nanographenes by amination and demonstrate fine property tuning by varying the donating ability of the aniline groups.
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影响因子:
3.2
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通讯作者:
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作者:
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通讯作者:
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