| Ultrafast Energy Transfer and Enhanced Two-Photon Absorption in a Novel Porphyrin Side-Chain Polymer |
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| 摘 要： | Ultrafast relaxation processes and transient two-photon absorption are studied in a novel porphyrin side-chain polymer, 5-hydroxy-10,15,20-triphenyl-porphyrin-poly(glycidyl methacrylate) (HTPP-PGMA), by using picosecond luminescence spectroscopy and femtosecond pump--probe techniques. HTPP-PGMA exhibits the ultrafast initial luminescence decay (～300ps), which is absent in the conventional porphyrin monomer such as TPP. Enhanced two-photon absorption was observed in HTPP-PGMA; the corresponding Im x(3) is about 2.8× 1011esu, which is almost one order of magnitude larger than that of the conventional porphyrin monomer (TPP) (～1.3×1012esu). The ultrafast energy transfer plays an important role in the excited-state relaxation dynamics observed in HTPP-PGMA. The potential application of HTPP-PGMA in optical switching is discussed.
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| 关 键 词： | 卟啉分子 超快松弛过程 光子吸收 聚合体 光合作用 |
Ultrafast Energy Transfer and Enhanced Two-Photon Absorption in a Novel Porphyrin Side-Chain Polymer |
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| Authors: | WANG Hui HUANG Ya-Ping DENG Li ZHAO Fu-Li LIN Wei-Zhu WANG Jian LIANG Zhao-Xi |
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| Institution: | State Key Laboratory of Photoelectronic Materials and Technologies, Zhongshan University, Guangzhou 510275
Institute of Polymer Science, Zhongshan University, Guangzhou 510275 |
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| Abstract: | |
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| Keywords: | 78 47 +p 42 65 -k 78 55 Kz |
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