...
首页> 外文期刊>Chemistry: A European journal >Ultra-Narrow Low-Bandgap Graphene Nanoribbons from Bromoperylenes-Synthesis and Terahertz-Spectroscopy
【24h】

Ultra-Narrow Low-Bandgap Graphene Nanoribbons from Bromoperylenes-Synthesis and Terahertz-Spectroscopy

机译:来自Bromoperylenes合成和Terahertz光谱的超窄的低带隙石墨烯纳米杆

获取原文
获取原文并翻译 | 示例
           

摘要

Soluble ultra-narrow armchair graphene nanoribbons (AGNRs) with length of ≈20 nm and completely fused cores exceeding 5 nm in length, pronounced near-infrared (NIR) absorption up to 1400 nm, and a low band gap (≈0.9 eV) are synthesized from 3,9(3,10)-dibromoperylene and 3,4,9,10-tetrabromoperylene. Since the monomers are obtained from perylene carboxyanhydrides, a remarkable link between dye and graphene chemistry is established. The two-step protocol for the AGNR synthesis by aryl-aryl coupling and subsequent cyclodehydrogenation is compared with a direct Yamamoto polymerization. Ultrafast photoconductivity analysis by optical pump-terahertz (THz) probe spectroscopy of the longest AGNRs excited in the NIR regime (800 nm) reveal their high intrinsic charge carrier mobility.
机译:可溶性超窄扶手椅石墨烯纳米波纹(AGNR)长度为≈20nm,完全熔合的核心长度超过5nm,明显的近红外(nir)吸收,高达1400nm,并且低频隙(≈0.9ev)是 合成3,9(3,10)溴化烯和3,4,9,10-四溴氢化烯烃。 由于单体是从羧酰酐获得的,因此建立了染料和石墨烯化学之间的显着联系。 将通过芳基芳基偶联的AGNR合成的两步方案和随后的环氢化氢化与直接Yamoto聚合进行比较。 通过光学泵-Terahertz(THz)探针光谱法在NIR制度(800nm)中激发的最长AGNR的探针光谱探讨了它们的高固有电荷载流子迁移率。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号