| 嵌段共聚物PAANa-Dendr. PE聚集体超分子结构中树枝体对铽离子发光增强的天线效应研究 |
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| 引用本文： | 朱麟勇,童晓峰,李妙贞,王尔鉴.嵌段共聚物PAANa-Dendr. PE聚集体超分子结构中树枝体对铽离子发光增强的天线效应研究[J].影像科学与光化学,2000,18(2):188-192. |
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| 作者姓名： | 朱麟勇 童晓峰 李妙贞 王尔鉴 |
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| 作者单位： | 中国科学院感光化学研究所, 北京100101 |
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| 基金项目： | 国家重点基础研究发展规划项目G1999022503资助 |
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| 摘 要： | 本文研究了两亲嵌段共聚物PAANa-Dendr.PE组成的超分子聚集体,对Tb3+离子的天线效应.当PAANa-Dendr.PE聚集体存在时,Tb3+的发光强度明显增强.而且增强的幅度正比于树枝体的代数.因此在PAANa-Dendr.PE/Tb3+系统中,树枝体作为“光天线”对紫外光能的捕集,通过分子内能量传递,能量沿线性PAANa链从树枝体的三重态传递到Tb3+离子.从而使得Tb3+的发光大幅度增强.
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| 关 键 词： | 树枝体线性体嵌段共聚物 天线效应 Tb3+ 发光增强 |
| 收稿时间： | 2000-03-03 |
ANTENNA EFFECT ON THE LUMINESCENCE ENHANCEMENT OF Tb3+ ION IN SUPRAMOLECULAR AGGREGATES OF BLOCK COPOLYMERS PAANa-Dendr.PE |
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| Zhu Lin-yong,Tong Xiao-feng,Li Miao-zhen,Wang Er-jian.ANTENNA EFFECT ON THE LUMINESCENCE ENHANCEMENT OF Tb3+ ION IN SUPRAMOLECULAR AGGREGATES OF BLOCK COPOLYMERS PAANa-Dendr.PE[J].Imaging Science and Photochemistry,2000,18(2):188-192. |
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| Authors: | Zhu Lin-yong Tong Xiao-feng Li Miao-zhen Wang Er-jian |
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| Institution: | Institute of Photographic Chemistry, The Chinese Academy of Sciences, Beijing 100101, P. R. China |
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| Abstract: | The luminescence of Tb3+ ion bound to supramolecular aggregates of amphiphilic copolymers PAANa-Dendr.PE was investigated.Luminescence intensity of Tb 3+ ion is prominently increased in the presence of aggregates of PAANa-Dendr.PE. Furthermore,the higher generation dendron of the copolymer exhibits more intense luminescence of Tb3+ ion.These results indicate that in PAANa-Dendr.PE/Tb3+ systems,dendritic block acted as a light-harvesting “antenna";the intramolecular energy transfer process is from the triplet T_1 of phenyl benzyl ether dendrimer to the ground state of the lanthanide ion along with the linear chain of PAANa. |
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| Keywords: | dendritic-linear block copolymers antenna effect Tb3+ ion luminescence enhancement |
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