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DOI	10.1088/0957-4484/22/4/045604
	A surfactant-free recipe for shape-controlled synthesis of CdSe nanocrystals
	Liu, Hongmei; Tao, Hong; Yang, Tingbin; Kong, Lingbin; Qin, Donghuan; Chen, Junwu
发表日期	2011
ISSN	0957-4484
卷号	22 期号:4
英文摘要	We described surfactant-free recipes for the synthesis of CdSe nanocrystals (NCs) with well-controlled morphologies at a relatively low temperature. Dot-, rod-, tetrapod-and sphere-shaped CdSe NCs were prepared with trioctylphosphine oxide (TOPO) as a non-equilibrium solvent and trioctylphosphine selenide (TOPSe) and cadmium carboxylates as Se and Cd precursors, respectively. It was found that the morphology and stacking pattern of the CdSe NCs were related to the preparation conditions such as the concentration of the injected TOPSe(monomer concentration), reaction temperature and chain length of the cadmium carboxylate precursors. At a reaction temperature of 240 degrees C, CdSe NCs with a tetrapod selectivity of up to 85% were obtained in the presence of cadmium myristate under high concentrated TOPSe injection, and the in situ-formed myristic acid supplied the best acidic ligand with optimal amount to stabilize the anisotropic growth of the tetrapods. The intentional addition of more myristic acid in the reaction system would block the growth pathway of the tetrapods. Using cadmium laurate, cadmium palmitate and cadmium stearate as the cadmium precursors would reduce the formation of the tetrapods, showing the very low selectivity of the tetrapods.
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
来源期刊	NANOTECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158647
作者单位	Qin, DH (corresponding author), S China Univ Technol, Inst Polymer Optoelect Mat & Devices, Key Lab Special Funct Mat, Guangzhou 510640, Guangdong, Peoples R China.
推荐引用方式 GB/T 7714	Liu, Hongmei,Tao, Hong,Yang, Tingbin,et al. A surfactant-free recipe for shape-controlled synthesis of CdSe nanocrystals[J],2011,22(4).
APA	Liu, Hongmei,Tao, Hong,Yang, Tingbin,Kong, Lingbin,Qin, Donghuan,&Chen, Junwu.(2011).A surfactant-free recipe for shape-controlled synthesis of CdSe nanocrystals.NANOTECHNOLOGY,22(4).
MLA	Liu, Hongmei,et al."A surfactant-free recipe for shape-controlled synthesis of CdSe nanocrystals".NANOTECHNOLOGY 22.4(2011).