%0 Journal Article
%T Ultrafast Energy Transfer and Enhanced Two-Photon Absorption in a Novel Porphyrin Side-Chain Polymer
%A WANG Hui
%A HUANG Ya-Ping
%A DENG Li
%A ZHAO Fu-Li
%A LIN Wei-Zhu
%A WANG Jian
%A LIANG Zhao-Xi
%A <br>
%J 中国物理快报
%D 2004
%I 
%X 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.
%K 78
%K 47
%K +p
%K 42
%K 65
%K -k
%K 78
%K 55
%K Kz<br>卟啉分子
%K 超快松弛过程
%K 光子吸收
%K 聚合体
%K 光合作用
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=BA73789ED082A15EDA7B685AB2635350&yid=D0E58B75BFD8E51C&vid=659D3B06EBF534A7&iid=59906B3B2830C2C5&sid=E4C02974137E9C5F&eid=16A32B3F11A2E663&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=19