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单溶剂体系中CdSe纳米晶体的形貌调控研究

Shape Control of CdSe Nanocrystals in Mono-solvent System
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摘要 采用非水溶液方法,分别在十六胺(HDA)或邻苯二甲酸辛酯(DOP)的单溶剂体系中,通过调节前体加入速度和反应温度制备出六角形、多臂、短棒、长棒状以及四脚架形CdSe纳米晶体,并用透射电镜(TEM)对所得产品进行了表征。结果表明,前体的过饱和度强烈地影响CdSe纳米晶体的形貌,过饱和度的提高有导致六方纤锌矿结构(011-)方向上择向生长的趋势;两种单溶剂体系中在CdSe纳米晶体的形貌调控上有不同的影响;200℃不利于得到高质量的CdSe纳米晶体。 CdSe nanocrystals were synthesized by non-aqueous solution method in mono-solvent system of hexadecylamin(HDA) and di-n-octyl phthalate(DOP) respectively.Different shape of CdSe nanocrystals such as hexagonal quantum dots,multi-pod and nanorods were obtained by adjusting the addition rate of monomers and temperature.The as-prepared CdSe nanocrystals were characterized by TEM.It was found that the supersaturation of monomers could dramatically influence the shape of CdSe nanocrystals both in HDA and DOP.The ...
作者 谢闯 陈巍 王静康
机构地区 天津大学化工学院 天津经济技术开发区企业博士后工作站
出处 《人工晶体学报》 EI CAS CSCD 北大核心 2009年第1期215-220,共6页 Journal of Synthetic Crystals
基金 天津市自然科学基金项目(No.05YFJZJC02000)
关键词 CDSE 纳米晶体 单溶剂体系 形貌控制 CdSe nanocrystals mono-solvent shape control
分类号 TB381 [一般工业技术—材料科学与工程]
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人工晶体学报
2009年 第1期

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