Hexa-peri-hexabenzocoronene with Different Acceptor Units for Tuning Optoelectronic Properties

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• 作者：Dr. Ashok Keerthi ; Ian Cheng-Yi Hou ; Dr. Tomasz Marszalek ; Prof. Dr. Wojciech Pisula ; Prof. Dr. Martin Baumgarten and Dr. Akimitsu Narita
• 刊名：Chemistry – An Asian Journal
• 出版年：2016
• 出版时间：October 6, 2016
• 年：2016
• 卷：11
• 期：19
• 页码：2710-2714
• 全文大小：1012K
• ISSN：1861-471X

文摘

Hexa-peri-hexabenzocoronene (HBC)-based donor–acceptor dyads were synthesized with three different acceptor units, through two pathways: 1) “pre-functionalization” of monobromo-substituted hexaphenylbenzene prior to the cyclodehydrogenation; and 2) “post-functionalization” of monobromo-substituted HBC after the cyclodehydrogenation. The HBC–acceptor dyads demonstrated varying degrees of intramolecular charge-transfer interactions, depending on the attached acceptor units, which allowed tuning of their photophysical and optoelectronic properties, including the energy gaps. The two synthetic pathways described here can be complementary and potentially be applied for the synthesis of nanographene–acceptor dyads with larger aromatic cores, including one-dimensionally extended graphene nanoribbons.