Hybrid N-Butylamine-Based Ligands for Switching the Colloidal Solubility and Regimentation of Inorganic-Capped Nanocrystals
Hybrid N-Butylamine-Based Ligands for Switching the Colloidal Solubility and Regimentation of Inorganic-Capped Nanocrystals
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DOI：
10.1021/acsnano.6b06996
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发表时间：
2017-02-01
期刊：
影响因子：
17.1
通讯作者：
Eychmueller, Alexander
中科院分区：
文献类型：
--
作者：
Sayevich, Vladimir;Guhrenz, Chris;Eychmueller, Alexander
我们报告了一个简单而有效的技术调整的胶体溶解度的无机封端的CdSe和CdSe/CdS核/壳纳米晶体（NC）从高极性到非极性介质中使用正丁胺分子。短的和挥发性的有机胺的引入主要导致在无机封端的NC的不稳定的扩散区域的修改，使得它们的可聚合性的显着扩展和提高的能力，以形成远程组件。此外，混合正丁胺/无机封端可以在温和的热处理下热分解，使得这种表面官能化方法与低温溶液处理的器件制造良好相容。特别地，基于正丁胺/Ga-I络合物封端的4.5nm CdSe NC固体的场效应晶体管显示出优异的输运特性，电子迁移率高达2cm（2）/（V.s），并且在低操作电压（
We report on a simple and effective technique of tuning the colloidal solubility of inorganic-capped CdSe and CdSe/CdS core/shell nanocrystals (NCs) from highly polar to nonpolar media using n-butylamine molecules. The introduction of the short and volatile organic amine mainly results in a modification of the labile diffusion region of the inorganic-capped NCs, enabling a significant extension of their dispersibility and improving the ability to form long-range assemblies. Moreover, the hybrid n-butylamine/inorganic capping can be thermally decomposed under mild heat treatment, making this approach of surface functionalization well-compatible with a low-temperature, solution processed device fabrication. Particularly, a field-effect transistor-based on n-butylamine/Ga-I-complex-capped 4.5 nm CdSe NC solids shows excellent transport characteristics with electron mobilities up to 2 cm(2)/(V.s) and a high current modulation value (>10(4)) at a low operation voltage (