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CdSe/CdS/SiO_2复合纳米球的制备及发光性能
  • ISSN号：0251-0790
  • 期刊名称：《高等学校化学学报》
  • 时间：0
  • 分类：O631[理学—高分子化学;理学—化学]
  • 作者机构：[1]吉林大学麦克德尔米德实验室,长春130012, [2]长春应用化学研究所高分子物理与化学国家重点实验室,长春130022
  • 相关基金：国家“九七三”计划项目（批准号：2007CD936203 S2009061009）; 国家自然科学基金（批准号：50973038 50873045）; 国家“八六三”计划项目（批准号：2007AA03Z324）; 长春市科技局项目（批准号：2008228）; 国家自然科学基金委创新研究群体（批准号：50621302）资助
作者： 马晓波[1,2], 聂伟, 王策[1], 张万金[1], 姬相玲
关键词： 量子点, 包覆, 二氧化硅, 荧光, 量子产率, Quantum dot, Encapsulation, SiO2, Luminescence, Quantum yield
中文摘要：

采用两相法合成了CdSe/CdS核-壳结构的量子点,用氨水催化水解正硅酸乙酯制得复合结构的CdSe/CdS/SiO2发光纳米球.通过对量子点用量、氨水用量、反应时间及溶剂比例等实验条件的调节,得到了单分散性较好,尺寸在23~145 nm的复合发光纳米球.利用紫外-可见吸收光谱和荧光发射光谱对其发光性能进行了研究,同时利用透射电镜（TEM）观察复合纳米球的形貌.结果表明,复合发光纳米球样品的最高荧光量子产率可达8%.

英文摘要：

Luminescent CdSe/CdS core-shell quantum dots were synthesized by two-phase method.These CdSe/CdS quantum dots are encapsulated with silica spheres from hydrolysis of tetraethylorthosilicate（TEOS） in the presence of ammonium.Adjusting the amount of quantum dots and ammonia,the reaction temperature and time as well as ratio of solvents,the size of as-prepared CdSe/CdS/SiO2 nanospheres can be tuned in the range of 23—145 nm.The samples are characterized by TEM,UV-Vis,and fluorescence spectrometer,respectively.The highest quantum yield（QY） of the CdSe/CdS/SiO2 sample can reach 8.0%.

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期刊信息
  • 《高等学校化学学报》
  • 北大核心期刊（2011版）
  • 主管单位:中华人民共和国教育部
  • 主办单位:吉林大学 南开大学
  • 主编：周其凤
  • 地址：吉林大学南胡校区
  • 邮编：130012
  • 邮箱：cjcu@jlu.edu.cn
  • 电话：0431-88499216
  • 国际标准刊号：ISSN：0251-0790
  • 国内统一刊号：ISSN：22-1131/O6
  • 邮发代号:12-40
  • 获奖情况:
  • 首届及第二届国家期刊奖,连续两届“百种中国杰出学术期刊”,中国期刊方阵“双高”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国科学引文索引（扩展库）,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:50676