Size-controlled growth of CdSe nanocrystals in microfluidic reactors
Size-controlled growth of CdSe nanocrystals in microfluidic reactors
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DOI：
10.1021/nl0259481
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发表时间：
2003-02-01
期刊：
影响因子：
10.8
通讯作者：
Alivisatos, AP
中科院分区：
文献类型：
--
作者：
Chan, EM;Mathies, RA;Alivisatos, AP
硒化镉纳米晶体在基于芯片的连续流微流体反应器中高温可重复合成，其尺寸分布与传统宏观合成的相当。通过荧光探测的纳米晶体尺寸可通过独立改变流经加热微通道的前驱体溶液的温度、流速和浓度来精确控制。这些实验证明了在基于芯片的微反应器内精确且快速地微调物理性质以及测试广泛条件的能力，从而能够合理、经济高效且环境友好地开发和生产新型纳米结构。
Cadmium selenide nanocrystals are reproducibly synthesized at high-temperature in continuous flow, chip-based microfluidic reactors and exhibit size distributions comparable to those for conventional macroscale syntheses. Nanocrystal size, probed by fluorescence, is precisely controlled by independently varying the temperature, flow rate, and concentration of precursor solution flowing through heated microchannels. These experiments demonstrate the ability to fine-tune physical properties and test wide ranges of conditions precisely and rapidly inside chip-based microreactors, enabling rational, cost-effective, and environmentally friendly development and production of novel nanostructures.