Self-assembly of monolayers of cadmium selenide nanocrystals with dual color emission
Self-assembly of monolayers of cadmium selenide nanocrystals with dual color emission
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DOI：
10.1021/la990165p
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发表时间：
1999-09-28
期刊：
影响因子：
3.9
通讯作者：
Chao, CY
中科院分区：
文献类型：
--
作者：
Chen, CC;Yet, CP;Chao, CY
我们在这里报告了一个简单的和低温的方法来诱导具有双色发射的半导体纳米晶体的单层图案化。我们已经使用了图案化的自组装单分子膜（SAMs）的烷硫醇作为模板组装成规则的二维阵列的两个特定尺寸的CdSe纳米晶体。在自组装膜的每个区域上的纳米阵列自发地组织在特定尺寸的纳米晶体和自组装膜的烷硫醇盐之间的不同的相互作用的基础上。扫描探针显微镜，扫描电子显微镜和光学光谱的特点，我们的研究结果表明，小和特定尺寸的纳米晶体可以组装成大的单层阵列与微米级的功能。我们的方法提供了一种新的方法来组装半导体纳米晶体，并应是有用的纳米晶体组成的光学和电子器件的制造。
We report here a simple and low-temperature method to induce the patterning of monolayers of semiconductor nanocrystals with dual color emission. We have used the patterned self-assembled monolayers (SAMs) of alkanethiolates on gold as a template to assemble two specific size CdSe nanocrystals into regular two-dimensional arrays. The nanocrystal arrays on each region of SAMs are organized spontaneously on the basis of different interactions between specific size nanocrystals and alkanethiolates of SAMs. As characterized by scanning probe microscopy, scanning electron microscopy, and optical spectroscopy, our results show that small and specific size nanocrystals can be assembled into large monolayer arrays with micrometer-scale features. Our method provides a new way to assemble semiconductor nanocrystals and should be useful for the fabrication of optical and electronic devices composed of nanocrystals.