论文标题
对手性底物纳米管的选择性功能化的光控制
Light Control over Chirality Selective Functionalization of Substrate Supported Carbon Nanotubes
论文作者
论文摘要
用碳纳米管的重氮反应形成光学$ SP^3 $缺陷，可用于光学和电路。我们研究了一个直接的在启动反应中，该反应由限制的激光照射支持，并提出了一种技术，即通过将光频率与其过渡能量匹配，可以在设备中优先官能化任意碳纳米管。在（9,7）纳米管和4-溴苯二氮二氟二氟氟甲植物之间进行了示例反应。通过拉曼光谱法监测反应动力学，在监测反应动力学时，局部暴露了多个半导体手力的底物支持的纳米管。通过共振拉曼光谱证实了反应的手性选择性，报告仅靶向物种的10 meV $ e_ {22} $过渡能量红移。我们进一步在单个管（9,7）电致电设备上证明了这种方法，并显示了基态$ e_ {11} $的25 meV红移发射，与原始管的发射相比。
Diazonium reactions with carbon nanotubes form optical $sp^3$ defects that can be used in optical and electrical circuits. We investigate a direct on-device reaction supported by confined laser irradiation and present a technique where an arbitrary carbon nanotube can be preferentially functionalized within a device by matching the light frequency with its transition energy. An exemplary reaction was carried out between (9,7) nanotube and 4-bromobenzenediazonium tetrafluoroborate. The substrate supported nanotubes of multiple semiconducting chiralities were locally exposed to laser light while monitoring the reaction kinetics in-situ via Raman spectroscopy. The chiral selectivity of the reaction was confirmed by resonant Raman spectroscopy, reporting a 10 meV $E_{22}$ transition energy red-shift only of the targeted species. We further demonstrated this method on a single tube (9,7) electroluminescent device and show a 25 meV red-shifted emission of the ground state $E_{11}$ compared to the emission from the pristine tubes.
