期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

CdTe/聚乳酸纳米杂化材料的制备及其荧光性能

Preparation and fluorescence properties of CdTe/poly(lactic acid) nanohybrids
下载PDF
导出
摘要 以十二烷基胺(DDA)为表面修饰剂,将巯基水相法合成的CdTe纳米晶转移至有机溶剂三氯甲烷中,然后采用"物理共混法"实现了CdTe/聚乳酸(CdTe/PLA)纳米杂化材料及其透明荧光膜的制备。通过紫外-可见光谱仪(UV-vis)、荧光(PL)、紫外透射反射分析仪等表征方法考察相转移前后CdTe纳米晶的光学性能,并系统研究了CdTe/PLA纳米杂化材料的荧光性能。结果表明:相转移后CdTe纳米晶的粒径未发生明显变化,其量子产率却提高了;所制备的CdTe/PLA纳米杂化材料具有优越的荧光性能,CdTe纳米晶在聚合物中仍然保持良好的分散性和较好的量子尺寸效应。 Under the direction of dodecylamine（DDA）,CdTe nanocrystals prepared by the thio-aqueous synthetic approach were transferred from water to organic solvent CHCl_3.Subsequently,CdTe/Poly（lactic acid）（CdTe/PLA） nanohybrids were prepared by the ＂physical blending＂ method.Their optical properties before and after the phase transfer were characterized by UV-vis absorption,photoluminescence（PL） and ultraviolet transmission reflection measurements.The results showed that the particle size of CdTe nanocrystals was kept unchanged while their quantum yields increased during the phase transfer process. The spectroscopic studies revealed that CdTe/PLA nanohybrids had good photoluminescence properties. CdTe nanocrystals were well dispersed in the polymer matrices to show good quantum size effect.
作者 王昌祝 程玉鹏 王彩凤 陈莉 陈苏
机构地区 南京工业大学化学化工学院
出处 《南京工业大学学报（自然科学版）》 CAS 北大核心 2012年第1期66-70,共5页 Journal of Nanjing Tech University(Natural Science Edition)
基金 国家自然科学基金资助项目(21006046,21076103,10976012 NSAF) 江苏省教育厅高校重点自然科学基金资助项目(07KJA53009) 江苏省教育厅高校自然科学基金资助项目(09KJB530005,10KJB530006)
关键词 CdTe纳米晶 聚乳酸(PLA) 纳米杂化材料 荧光性能 CdTe nanocrystal poly（lactic acid ） nanohybrids fluorescence properties
分类号 TB383.1 [一般工业技术—材料科学与工程]
  • 相关文献

参考文献17

  • 1Nan M, Chad J D,Shana 0 K. RNA-templated semiconductor nanocrystals[J]. J Am Chem Soc,2006,128(39) :12598 -12599.
  • 2Gangopadhyay R, De A. Conducting polymer nanoeomposites: a brief overview [ J ]. Chem Mater,2000,12 ( 3 ) : 608-622.
  • 3Bekiarl V, Pagonis K, Bokias G, et al. Study of Poly ( N,N dimethylacrylamide)/CdS nanocomposite organic/inorganic gels [J]. Langmuir, 2004,20 ( 19 ) :7972-7975.
  • 4Winiarz J G, Zhang L M, Lai M, et al. Observation of the photorefractive effect in a hybrid organic-inorganic nanoeomposite [ J ]. J Am Chem Soc, 1999,121 (22) :5287-5295.
  • 5Dabbousi B O, Bawendi M G, Onitsuka O. Electroluminescence from CdSe quantum-dot/polymer composites[ J]. Appl Phys Lett, 1995,66( 11 ) :1316-1318.
  • 6Huynh W U,Peng X, Alivisatos A P. CdSe nanocrystal rods/poly (3-hexylthiophene) composite photovohaic devices [ J]. Adv Mater, 1999,11 ( 11 ) :923-927.
  • 7Talapin D V,Nelson J H,Shevchenko E V,et al. Seeded growth of highly luminescent CdSe/CdS nanoheterostructures with rod and tetrapod morphologies[ J]. Nano Let,2007,7 (10) :2951-2959.
  • 8Ge C W, Xu M, Liu J, et al. Facile synthesis and application of highly luminescent CdTe quantum dots with an eleetrogenerated precursor [ J]. C hem Commun ,2008 (4) :450-452.
  • 9Guo J,Yang W L,Wang C C. Systematic study of the photoluminescence dependence of thiol-capped CdTe nanocrystals on the reaction conditions [ J ]. J Phys Chem: B, 2005, 109 ( 37 ) : 17467-17473.
  • 10Klostranec J M, Chart W C. Quantum dots in biological and biomedical research:recent progress and present challenges[ J]. Adv Mater,2006,18 ( 15 ) : 1953-1964.

二级参考文献19

  • 1Gaponik N P,Talapin D V,Rogach A L,et al. Electrochemicalsynthesis of CdTe nanocrystal/polypyrrole composites for optoelectronic applications[J]. J Mater Chem,2000,10:2163 -2166.
  • 2Gao M Y,Sun J Q, Dulkeith E, et al. Lateral patterning of CdTe nanocrystal films by the electric field directed layer-by-layer assembly method [ J]. Langmuir,2002,18 (10) :4098 - 4102.
  • 3Komarala V K, Rakovich Y P, Bradley A L, et al. Emission properties of colloidal quantum dots on polyelectrolyte multilayers[ J ]. Nanotechnology, 2006,17:4117 - 4122.
  • 4Gallardo D E,Bertoni C, Dunn S, et al. Cathodic and anodic material diffusion in polymer/semiconductor-nanocrystal composite devices [J ]. Adv Mater,2007,19 (20) :3364 - 3367.
  • 5Mamedova N N, Kotov N A. Albumin-CdTe nanoparticle bioconjugates:preparation, structure, and interunit energy transfer with antenna effect [ J ]. Nano Letters,2001,1 (6) :281 - 286.
  • 6Chu M Q, Zhou L H, Song X, et al. Incorporating quantum dots into polymer microspheres via a spray-drying and thermal-denaturizing approach [ J ]. Nanotechnology ,2006,17 : 1791 - 1796.
  • 7Rogach A, Susha A, Caruso F, et al. Nano- and microengineering : 3-D colloidal photonic crystals prepared from sub-μm-sized polystyrene latex spheres pre-coated with luminescent polyelectrolyte/ nauoerystal shells[ J]. Adv Mater,2000,12 (5) :333 - 337.
  • 8Zhang H, Cui Z C, Wang Yao, et al. From water-soluble CdTe nanocrystals to fluorescent nanocrystal-polymer transparent com- posites using polymerizable surfactants [ J ]. Adv Mater, 2003,15 (10) :777 -780.
  • 9Sun H Z,Zhang H, Zhang J H, et al. Effect of electrostatic interactions on the photophysical properties of the composites of CdTe nanocrystals and carbazole-containing polymers [ J ]. J Phys Chem C,2008,112(7) :2317 -2324.
  • 10Cao X D,Li C M, Bao H F, et al. Fabrication of strongly fluorescent quantum dot-polymer composite in aqueous solution [ J ]. Chem Mater,2007,19 ( 15 ) :3773 - 3779.

共引文献63

南京工业大学学报（自然科学版）
2012年 第1期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部