石墨烯是零间隙半导体2D材料,具有出色的电荷传输性能。打开带隙并使石墨烯可用作半导体材料的一种方法是通过制备石墨烯纳米带(GNR)将电子离域限制在一维范围内。尽管到目前为止已经报道了几种方法,但是就结构精度和大规模生产而言,溶液相,自下而上的合成是最有前途的。在本文中,我们报告了通过区域选择性光化学环脱氯化氢(CDHC)反应从多氯代聚(间亚苯基)合成定义明确的,螺旋状卷曲的GNR。螺旋GNR的结构由1确定1 H NMR,FT-IR,XPS,TEM和拉曼光谱。这种Riemann表面状GNR的带隙为2.15 eV,在溶液和固态下均在可见光区域高发射。
Prototypes for the Polaronic Ferromagnet. Synthesis and Characterization of High-Spin Organic Polymers
作者:Michael M. Murray、Piotr Kaszynski、David A. Kaisaki、Wonghil Chang、Dennis A. Dougherty
DOI:10.1021/ja00097a024
日期:1994.9
characterization of several new polymers that are considered one-dimensional prototypes for the polaronicferromagnetic are reported. Synthesis involved either Wittig or Suzuki coupling to produce polymers with extended pi} systems. Oxidative doping (Isub 2} or AsFsub 5}) produces radical cations (polarons) that are stable at room temperature. Magnetic characterization of the dopedpolymers, using SQUID-based