Functionalization of single-wall carbon nanotubes with chromophores of opposite internal dipole orientation.
作者： Yuanchun Zhao , Changshui Huang , Myungwoong Kim , Bryan M. Wong , François Léonard
DOI: 10.1021/AM4024753
关键词:
摘要: We report the functionalization of carbon nanotubes with two azobenzene-based chromophores large internal dipole moments and opposite orientations. The molecules are attached to noncovalently via a pyrene tether. A combination characterization techniques shows uniform molecular coverage on nanotubes, minimal aggregation excess substrate. on/off ratios subthreshold swings nanotube-based field-effect transistors (FETs) preserved after functionalization, different shifts in threshold voltage observed for each chromophore. Ab initio calculations verify properties synthesized indicate very small charge transfer, confirming strong, noncovalent functionalization.
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