Synthesis of Graphene Nanoribbons by Ambient-Pressure Chemical Vapor Deposition and Device Integration
作者:Zongping Chen、Wen Zhang、Carlos-Andres Palma、Alberto Lodi Rizzini、Bilu Liu、Ahmad Abbas、Nils Richter、Leonardo Martini、Xiao-Ye Wang、Nicola Cavani、Hao Lu、Neeraj Mishra、Camilla Coletti、Reinhard Berger、Florian Klappenberger、Mathias Kläui、Andrea Candini、Marco Affronte、Chongwu Zhou、Valentina De Renzi、Umberto del Pennino、Johannes V. Barth、Hans Joachim Räder、Akimitsu Narita、Xinliang Feng、Klaus Müllen
DOI:10.1021/jacs.6b10374
日期:2016.11.30
materials, exhibiting high current on/off ratios up to 6000 in field-effecttransistor devices. This value is 3 orders of magnitude higher than values reported so far for other thin-filmtransistors of structurally defined GNRs. Notably, on-surface mass spectrometry analyses of polymerprecursors provide unprecedented evidence for the chemical structures of the resulting GNRs, especially the heteroatom
Synthesis and Characterization of Polycyclic Aromatic Hydrocarbons with Different Spatial Constructions Based on Hexaphenylbenzene Derivatives
作者:Hua Chen、Haoyun Zhu、Yuli Huang、Junwei Yang、Weizhi Wang
DOI:10.1002/asia.201701061
日期:2017.12.5
(the interaction of the molecular chains in the solid state). Thus, three polycyclic aromatic hydrocarbons with different spatial constructions, based on hexaphenylbenzene derivatives, were prepared in this work: linear (P1‐OX), V (P2‐OX), and zigzag (P3‐OX) types. These well‐defined polymers exhibited interesting optical and electrochemistry behavior due to their different extents of planarity. Matrix‐assisted
Precise membrane separation of nanoparticles using a microporous polymer containing radially π-conjugated molecular carbocycles
作者:Shengda Wang、Qiang Huang、Jinyi Wang、Pingsen Huang、Pengwei Fang、Pingwu Du
DOI:10.1039/d1cc04480j
日期:——
We report the synthesis of a novel π-conjugated porous polymer, which demonstrates a distinct small size cutoff (ca. 2.6 nm) and a major size at ∼1.5 nm for the size-selective separation of nanoparticles.
A matter of doping: Graphenenanoribbons (GNRs) were generated through an on‐surface bottom‐up synthesis and selectively doped at their edges by introducing nitrogen atoms in the precursor monomers. While the size of the band gap of 2.8 eV remains almost unchanged upon N substitution, a linear shift of the band structure is observed and corresponds to n‐type doping (see picture; CB=conduction band