Formation of monodispersed PVP-capped ZnS and CdS nanocrystals under microwave irradiation
Formation of monodispersed PVP-capped ZnS and CdS nanocrystals under microwave irradiation
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DOI：
10.1016/s0927-7757(03)00072-4
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发表时间：
2003-06-30
影响因子：
5.2
通讯作者：
Zhu, ZK
中科院分区：
文献类型：
--
作者：
He, R;Qian, XF;Zhu, ZK
在N，N-二甲基甲酰胺(DMF)溶液中，以锌(Ac)(2)或镉(Ac)(2)与硫脲为原料，采用微波法制备了聚N-乙烯-2-吡咯烷酮(PVP)包覆的硫化锌、硫化镉纳米粒子。通过吸收光谱的时间演化来监测反应过程。以PVP为稳定剂，制得了具有高量子尺寸效应的单分散半导体纳米粒子。进一步的研究表明，微波辐射可以选择性地影响不同半导体纳米粒子的成核和生长速度。(C)2003 Elsevier Science B.V.保留所有权利。
Poly (N-vinyl-2-pyrrolidone) (PVP)-capped ZnS, CdS nanoparticles were prepared by a microwave method from Zn(Ac)(2) or Cd(Ac)(2) and thiourea in N,N-dimethylformamide (DMF) solution. The reaction process was monitored by the temporal evolution of the absorption spectrum. With PVP as stabilizer, monodispersed semiconductor nanoparticles, which showed high quantum size effect, have been obtained. Further study showed that the microwave irradiation could influence selectively the nucleation and growing rates of different semiconductor nanoparticles. (C) 2003 Elsevier Science B.V. All rights reserved.