Spectrum Characterization and Fine Structure of Copper Phthalocyanine-Doped TiO2 Microcavities
LIU Cheng-lin1,2, ZHANG Xin-yi2, ZHONG Ju-hua3, ZHU Yi-hua3, HE Bo4, WEI Shi-qiang4
1. Physics Department of Yancheng Teachers’ College, Yancheng 224002, China 2.Synchrotron Radiation Research Center, Fudan University, Shanghai 200433, China 3. Science School of East China University of Science and Technology, Shanghai 200237, China 4. National Synchrotron Radiation Lab, University of Science and Technology of China, Hefei 230029, China
Abstract：Copper phthalocyanine-doped TiO2 microcavities were fabricated by chemistry method. Their spectrum characterization was studied by Fourier transform infrared (FTIR) and Raman spectroscopy, and their fine structure was analyzed by X-ray absorption fine structure (XAFS). The results show that there is interaction of copper phthalocyanine (CuPc) and TiO2 microcavities after TiO2 microcavities was doped with CuPc. For example, there is absorption at 900.76 cm-1 in FTIR spectra, and the “red shift” of both OH vibration at 3392.75 cm-1 and CH vibration at 2848.83 cm-1. There exist definite peak shifts and intensity changes in infrared absorption in the C—C or C—N vibration in the planar phthalocyanine ring, the winding vibration of C—H inside and C—N outside plane of benzene ring. In Raman spectrum, there are 403.4, 592.1 and 679.1 cm-1 characterized peaks of TiO2 in CuPc-doped TiO2 microcavities, but their wave-numbers show shifts to anatase TiO2. The vibration peaks at 1586.8 and 1525.6 cm-1 show that there exists the composite material of CuPc and TiO2. These changes are related to the plane tropism of the molecule structure of copper phthalocyanine. XAFS showed tetrahedron TiO4 structure of Ti in TiO2 microcavities doped with copper phthalocyanine, and the changes of inner “medial distances” and the surface structure of TiO2 microcavities.
[1] Chen L L, Li W L, Wei H Z, et al. Solar Energy Materials & Solar Cells, 2006, 90: 1788. [2] Michal Wojdyla, Beate Derkowska, Waclaw Bata, et al. Optical Materials, 2006, 28: 1000. [3] GAO Zhao-yang, ZHANG Xu, ZHENG Dai-shun, et al(郜朝阳, 张 旭, 郑代顺, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2004, 24(4): 502. [4] Nguyen The Vinh, Lee Hynn Cheol, Yang O Bong, et al. Solar Energy Materials & Solar Cells, 2006, 90: 967. [5] LIU Cheng-lin, ZHONG Ju-hua, LI Yuan-guang, et al(刘成林, 钟菊花, 李远光, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2005, 25(12): 1947. [6] LIU Cheng-lin, LI Yuan-guang, ZHONG Ju-hua, et al(刘成林, 李远光, 钟菊花, 等). Function Material(功能材料), 1999, 30(2): 223. [7] Lin Li, Minoru Mizuhata, Akihiko Kajinami, et al. Synthetic Metals, 2004, 146: 17. [8] Wayne M Campbell, Anthony K Burrell, David L Officer, et al. Coordination Chemistry Reviews, 2004, 248: 1363. [9] Di K, Zhu Y H, Yang X L, et al. Journal of Colloid and Interface Science, 2006, 294: 499. [10] Haiyan Li, Carl P Tripp. Langmuir, 2005, 21: 2585. [11] DING Han-ming, ZHANG Yin, CHEN Wen-qi, et al(丁旱明, 张 引, 陈文启, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 1997, 17(2): 73. [12] Lei Miao, Sakae Tanemura, Shoichi Toh, et al. J. Crystal Growth, 2004, 264: 246. [13] Wagemaker M, Lutzenkirchen Hechi D, Keil P, et al. Physica B, 2003, 336: 118.
