The synthesis and the characterization of triphenylbenzene-cored dendrimers of first- and second-generation are described. Their absorption, photoluminescence as well as their two-photon absorption properties have been investigated and compared to a quadrupolar counterpart. These molecules combine wide transparency in the visible range and high two-photon absorption cross-sections that increase with the generation, making these dendrimers promising systems for optical power limiting applications. (C) 2003 Elsevier Science Ltd. All rights reserved.
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Sun Yat Sen Univ, Sch Chem & Chem Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R ChinaSun Yat Sen Univ, Sch Chem & Chem Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
Yan, Yun-Xing
Fan, Hai-Hua
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Fan, Hai-Hua
Guo, Ya-Hui
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Guo, Ya-Hui
Lam, Chi-Keung
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Lam, Chi-Keung
Huang, Hong
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Huang, Hong
Tian, Yu-Peng
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Tian, Yu-Peng
Sun, Yuan-Hong
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Sun, Yuan-Hong
Tian, Lei
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Tian, Lei
Wang, Chuan-Kui
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Wang, Chuan-Kui
Wang, He-Zhou
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Wang, He-Zhou
Chen, Xiao-Ming
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机构:Sun Yat Sen Univ, Sch Chem & Chem Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China