Precursor Self-Assembly Identified as a General Pathway for Colloidal Semiconductor Magic-Size Clusters
文献类型：期刊论文
| 作者 | Wang, LX; Hui, J; Tang, JB; Rowell, N; Zhang, BW; Zhu, TT; Zhang, M; Hao, XY; Fan, HS; Zeng, JR |
| 刊名 | ADVANCED SCIENCE
 |
| 出版日期 | 2018 |
| 卷号 | 5期号:12页码:- |
| 关键词 | NONINJECTION ONE-POT QUANTUM DOTS MULTIPLE FAMILIES CDSE NANOCRYSTALS ZNSE NANOCRYSTALS 2-STEP NUCLEATION HOT-INJECTION GROWTH PHOTOLUMINESCENCE NANOPARTICLES |
| ISSN号 | 2198-3844 |
| DOI | 10.1002/advs.201800632 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Little is known about the formation pathway of colloidal semiconductor magic-size clusters (MSCs). Here, the synthesis of the first single-ensemble ZnSe MSCs, which exhibit a sharp optical absorption singlet peaking at 299 nm, is reported; their formation is independent of Zn and Se precursors used. It is proposed that the formation of MSCs starts with precursor self-assembly followed by Zn and Se covalent bond formation to result in immediate precursors (IPs) which can transform into the MSCs. It is demonstrated that the IPs in cyclohexane appear transparent in optical absorption, and become visible as MSCs exhibiting one sharp optical absorption peak when a primary amine is added at room temperature. It is shown that when the preparation of the IP is controlled to be within the induction period, which occurs prior to nucleation and growth of conventional quantum dots (QDs), the resulting MSCs can be produced without the complication of the simultaneous coproduction of conventional QDs. The present study reveals the existence of precursor self-assembly which leads to the formation of colloidal semiconductor MSCs and provides insights into a multistep nucleation process in cluster science. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31066]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Sichuan Univ, Engn Res Ctr Biomat, Chengdu 610065, Sichuan, Peoples R China 2.Sichuan Univ, Sch Chem Engn, Chengdu 610065, Sichuan, Peoples R China 3.Sichuan Univ, Inst Atom & Mol Phys, Chengdu 610065, Sichuan, Peoples R China 4.Natl Res Council Canada, Ottawa, ON K1A 0R6, Canada 5.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, LX,Hui, J,Tang, JB,et al. Precursor Self-Assembly Identified as a General Pathway for Colloidal Semiconductor Magic-Size Clusters[J]. ADVANCED SCIENCE,2018,5(12):-. |
| APA | Wang, LX.,Hui, J.,Tang, JB.,Rowell, N.,Zhang, BW.,...&Yu, K.(2018).Precursor Self-Assembly Identified as a General Pathway for Colloidal Semiconductor Magic-Size Clusters.ADVANCED SCIENCE,5(12),-. |
| MLA | Wang, LX,et al."Precursor Self-Assembly Identified as a General Pathway for Colloidal Semiconductor Magic-Size Clusters".ADVANCED SCIENCE 5.12(2018):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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