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学科主题: 高分子化学
题名: New Preparation of Structurally Symmetric, Biodegradable Poly(L-lactide) Disulfides and PLLA-Stabilized, Photoluminescent CdSe Quantum Dots
其他题名: 合成结构对称的生物降解性聚乳酸二硫化合物及其稳定的CdSe量子点
作者: Hou XD(侯小东) ; Li QB(李巧波) ; Jia L(贾林) ; Li Y(李洋) ; Zhu YD(朱英丹) ; Cao AM(曹阿民)
通讯作者: 曹阿民
刊名: Macromol. Biosci.
发表日期: 2009
卷: 9, 期:6, 页:551-562
收录类别: SCI
部门归属: 上海有机所; 上海交通大学
英文摘要: New, biodegradable poly(L-lactide) disulfides, PLLA-SS-PLLA, were first prepared through the DMAP-catalyzed ring-opening polymerization Of L-lactide with a dihydroxyethyl disulfide initiator, and were further catalytically reduced into thiol-end-functionalized poly(L-lactide)s, HO-PLLA-SH, with a tributyl phosphine catalyst (PBu3). Employing the HO-PLLA-SH as the ligand, new core-shell CdSe/PLLA quantum dots (QDs) were continuously prepared via a facile ligand-exchanging process with the CdSe/TOPO OD precursor. The chemical structures, morphologies and solvent solubility of these prepared CdSe/PLLA QDs were investigated by NMR spectroscopy, FTIR spectroscopy, XRD, TEM and excitation under either room light or UV radiation at 365 nm, demonstrating the successful ligand replacement and the new formation of core-shell CdSe/PLLA QDs (diameter:4.0 +/- 0.3 nm). Finally, UV and FL results indicate the two factors of the HO-PLLA-SH ligand molecular weight and the ligand/OD precursor feeding weight ratio were important for preparing stable and highly photoluminescent CdSe/PLLA ODs.
语种: 英语
相关网址: 查看原文
WOS记录号: WOS:000267313400002
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/22946
Appears in Collections:高分子材料研究室_期刊论文

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Recommended Citation:
Hou XD,Li QB,Jia L,et al. New Preparation of Structurally Symmetric, Biodegradable Poly(L-lactide) Disulfides and PLLA-Stabilized, Photoluminescent CdSe Quantum Dots[J]. Macromol. Biosci.,2009,9(6):551-562.
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