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[1] Qian Ying, Huang Wei, Lu Zhifeng, Meng Kang, et al. Multi-branched carbazole derivatives for two-photon absorptionand two-photon excited fluorescence [J]. Journal of Southeast University (English Edition), 2008, 24 (2): 234-237. [doi:10.3969/j.issn.1003-7985.2008.02.022]
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Multi-branched carbazole derivatives for two-photon absorptionand two-photon excited fluorescence()
多分枝咔唑衍生物的双光子吸收和双光子荧光性质
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
24
Issue:
2008 2
Page:
234-237
Research Field:
Chemistry and Chemical Engineering
Publishing date:
2008-06-03

Info

Title:
Multi-branched carbazole derivatives for two-photon absorptionand two-photon excited fluorescence
多分枝咔唑衍生物的双光子吸收和双光子荧光性质
Author(s):
Qian Ying1, Huang Wei2, Lu Zhifeng1, Meng Kang1, Lü Changgui2, Cui Yiping2
1School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
2School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China
钱鹰1, 黄维2, 路志锋1, 孟康1, 吕昌贵2, 崔一平2
1东南大学化学化工学院, 南京 211189; 2东南大学电子科学与工程学院, 南京 210096
Keywords:
two-photon absorption;  two-photon excited fluorescence;  multi-branched chromophores;  carbazole derivatives
双光子吸收;  双光子诱导荧光;  多分枝分子;  咔唑衍生物
PACS:
O626.24
DOI:
10.3969/j.issn.1003-7985.2008.02.022
Abstract:
Carbazole-core multi-branched chromophores 9-ethyl-3, 6-bis(2-{4-[5-(4-tert-butyl-phenyl)-[1, 3, 4]oxadiazol-2-yl]-phenyl}-vinyl)-carbazole(3)and 9-ethyl-3-(2-{4-[5-(4-tert-butyl-phenyl)-[1, 3, 4]oxadiazol-2-yl]-phenyl}-vinyl)-carbazole(2)are synthesized through Wittig reaction and characterized by nuclear magnetic resonance(NMR)and infrared(IR).The two-photon absorption properties of chromophores are investigated.These chromophores exhibit large two-photon absorption cross-sections and strong blue two-photon excited fluorescence.The cooperative enhancement of two-photon absorption(TPA)in the multi-branched structures is observed.This enhancement is partly attributed to the electronic coupling between the branches.The electronic push-pull structures in the arm and their cooperative effects help the extended charge transfer for TPA.
通过Wittig反应合成了咔唑衍生物9-乙基-3-{5-(4-叔丁基苯基)-[1, 3, 4] 二唑-2-苯乙烯基}-咔唑(2)和9-乙基-3, 6-双{5-(4-叔丁基苯基)-[1, 3, 4] 噁二唑-2-苯乙烯基}-咔唑(3), 用核磁共振和红外光谱进行了结构表征.实验测定了咔唑衍生物的双光子吸收和双光子诱导荧光性质.这些化合物的双光子吸收截面较大, 在800 nm波长的激光激发下发出很强的蓝色双光子上转换荧光.实验中观察到了多枝结构在双光子吸收中的协同效应.这样的协同效应部分原因是由于多分枝间电子耦合作用, 多分枝分子中重复单元的推拉电子结构和协同效应有效地增强了分子的双光子吸收性质.

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Memo

Memo:
Biography: Qian Ying(1969—), female, doctor, professor, yingqian@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.60678042), the Natural Science Foundation of Jiangsu Province(No.BK2006553), the Pre-Research Project of the National Natural Science Foundation supported by Southeast University(No.9207041399).
Citation: Qian Ying, Huang Wei, Lu Zhifeng, et al. Multi-branched carbazole derivatives for two-photon absorption and two-photon excited fluorescence[J].Journal of Southeast University(English Edition), 2008, 24(2):234-237.
Last Update: 2008-06-20