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乙醇/Tris-水中Cu(Ⅱ)对SDS和DNA增强[Ru(bpy)2(dppz)]2+光致发光的调控

陈琳琳 ,  刘俊辰 ,  江臻燊 ,  甘桂莲 ,  李红

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引用本文: 陈琳琳, 刘俊辰, 江臻燊, 甘桂莲, 李红. 乙醇/Tris-水中Cu(Ⅱ)对SDS和DNA增强[Ru(bpy)2(dppz)]2+光致发光的调控[J]. 无机化学学报, 2013, 29(6): 1176-1184. doi: 10.3969/j.issn.1001-4861.2013.00.169 shu
Citation:  CHEN Lin-Lin, LIU Jun-Chen, JIANG Zhen-Shen, GAN Gui-Lian, LI Hong. Copper(Ⅱ)-Tuned Photoluminescence of [Ru(bpy)2(dppz)]2+ Enhanced by SDS and DNA in Ethanol and Tris-water Mixtures[J]. Chinese Journal of Inorganic Chemistry, 2013, 29(6): 1176-1184. doi: 10.3969/j.issn.1001-4861.2013.00.169 shu

乙醇/Tris-水中Cu(Ⅱ)对SDS和DNA增强[Ru(bpy)2(dppz)]2+光致发光的调控

  • 基金项目:

    国家自然科学基金(No.21271075) (No.21271075)

    广东省自然科学基金(No.10351063101000001)资助项目。 (No.10351063101000001)

摘要: 应用荧光光谱、荧光显微镜和伏安法研究了乙醇/水体系中Cu(Ⅱ)对十二烷基硫酸钠(SDS)和鱼精DNA增强[Ru(bpy)2(dppz)]2+(bpy=2,2'-联吡啶,dppz=邻联二吡啶[3,2-a:2',3'-c]吩嗪)光致发光的调控。结果表明,在乙醇/三羟甲基氨基甲烷(Tris)-水(V乙醇:VTris=1:5)体系中,DNA和阴离子表面活性剂SDS均能增强[Ru(bpy)2(dppz)]2+的光致发光,其与[Ru(bpy)2(dppz)]2+间的键合常数分别为5.5×105和4.2×102 L·mol-1;Cu(Ⅱ)离子能通过DNA和SDS介导的光诱导电子转移淬灭乙醇/水溶液中[Ru(bpy)2(dppz)]2+的光致发光,DNA介导的Stern-Volmer淬灭常数为2.0×105 L·mol-1,远远大于SDS介导的淬灭常数(9.0×103 L·mol-1)。此外,结合SDS、DNA和Cu(Ⅱ)对[Ru(bpy)2(dppz)]2+在铟锡氧化物(ITO)电极上发生的氧化还原反应的影响,进一步探讨了乙醇/Tris-水中Cu(Ⅱ)对SDS和DNA增强[Ru(bpy)2(dppz)]2+光致发光的调控机理。该研究有助于更好地理解DNA嵌入剂的发光和淬灭机制,为生物分子光开关的构建提供新思路。

English

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  • 收稿日期:  2012-12-19
  • 网络出版日期:  2013-02-06
通讯作者: 陈斌, bchen63@163.com
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