Structurally Defined Graphene Nanoribbons with High Lateral Extension
Structurally Defined Graphene Nanoribbons with High Lateral Extension
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DOI：
10.1021/ja307697j
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发表时间：
2012-11-07
影响因子：
15
通讯作者：
Muellen, Klaus
中科院分区：
文献类型：
--
作者：
Schwab, Matthias Georg;Narita, Akimitsu;Muellen, Klaus
横向延伸的聚亚苯基前体的氧化环化脱氢允许自下而上合成具有前所未有的宽度的结构限定的石墨烯纳米带（GNRs）。通过MALDI-TOF MS、FT-IR、拉曼和紫外-可见吸收光谱以及代表性模型体系的研究来验证环化脱氢的效率。所制备的GNRs表现出扩展到近红外区域的宽吸收，光学带隙低至1.12 eV。
Oxidative cyclodehydrogenation of laterally extended polyphenylene precursor allowed bottom-up synthesis of structurally defined graphene nanoribbons (GNRs) with unprecedented width. The efficiency.of the cyclodehydrogenation was validated by means of MALDI-TOF MS, FT-IR, Raman, and UV-vis absorption spectroscopies as well as investigation of a representative model system. The produced GNRs demonstrated broad absorption extended to near-infrared region with the optical band gap of as low as 1.12 eV.