1.State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023, China 2.College of Chemistry, Yuncheng University, Yuncheng 044000, China 3.State Key Laboratory of Integrated Optoelectronics, Jilin University, Changchun 130021, China 4.Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
Abstract：In the present paper, the authors study the photolumimescence spectra of the novel 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine casting film and vacuum-deposited film.Photolumimescence spectras of casting film on the quartz substrate were measured at 10, 77，177 and 300 K, and the photolumimescence spectra of vacuum-deposited film with a thickness of about 200 nm on the silicon substrate was studied at room temperature (300 K).For 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine, the casting films all show fluorescence peaks at 942, 937, 942 and 942 nm and phosphorescence peaks at 1 114, 1 057, 1 114 and 1 114 nm in the photolumimescence spectra at 10, 77，177 and 300 K, respectively.In the cases of 2,3-tetra-(2-isopropyl-5-methyl -benzoyl) hydrogen phthalocyanine, the peaks of excimers, which are related with the resistance ability of molecular aggregation, were found around 1 673 nm as observed from photolumimescence spectra of the novel phthalocyanine casting films at 177 and 300 K.And the peak of excimers at 300 K is stronger than at 177 K also as can be seen from photolumimescence spectra of its casting films.With the increase in the temperature, the fluorescence peak was weakened and the peaks of excimers became stronger from the photoluminescence spectra of 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine casting films at 10, 77，177 and 300 K.At the same time, the authors discussed the reason for coming into being 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine excimers as can be concluded from the structure of 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine molecules through the parameters of Chem 3D Ultra 9.0 MM2 calculation and simulated diagram of C4h isomer of 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine.The peaks of casting film and vacuum-deposited film of 2,3-tetra-(2-isopropyl-5-methyl -benzoyl) hydrogen phthalocyanine presented different maximum emission wavelength and full width at half maximum.The peak of 2,3-tetra-(2-isopropyl-5-methyl-benzoyl) hydrogen phthalocyanine vacuum-deposited films displays the maximum emission wavelengths around 1 140 nm, while the maximum emission wavelengths of casting films show obvious differences compared with the vacuum-deposited films.The usual full width at half maximum is approximately 300 nm for casting film, which is in contrasts with that the full width at half maximum is about 100 nm for the vacuum-deposited film as can be seen from photolumimescence spectra of 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine casting film and photolumimescence spectra of 2,3-tetra-(2-isopropyl-5-methylbenzoyl) hydrogen phthalocyanine vacuum-deposited film.
Key words：Excimer;Vacuum-deposited film;Casting film
[1] Tang C W, Vanslyke S A.Appl.Phys.Lett., 1987, 57(12)：913. [2] Christopher P S, Simone C, Oleg V S.Advanced Materials, 1999, 11(7)：533. [3] Hong Z R, Liang J, Li R G.Advanced Materials, 2001, 13(16)：1241. [4] Elschner A, Heuer H W, Jonas F, et al.Advanced Materials, 2001, 13 (23)：1811. [5] MU Lan, CHEN Xiao-kang, LI Long-di(牟 兰，陈小康，李隆弟).Spectroscopy and Spectral Analysis(光谱学与光谱分析)，1999，19(6)： 880. [6] XIAO Zun-hong(肖尊宏).Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2006, 26(3)：418. [7] HU Xiao-juan, GAO Li-hua, WANG Ke-zhi(胡晓娟, 高丽华, 王科志).Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2006, 26(6)：1106. [8] SONG Guo-li, SUN Kai-xia(宋国利, 孙凯霞).Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2006, 26(10)：1806. [9] ZHANG Ting, XU Zheng, TENG Feng, et al(章 婷, 徐 征, 滕 枫, 等).Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2006, 26(5)：790. [10] DU Xin-zhen, L Wei-hua, DENG Hua-ling, et al(杜新贞, 吕卫华, 邓华陵, 等).Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2004，24(4)：402. [11] MU Jun-ze, HUANG Gao-ling, ZHANG Yong(慕俊泽, 黄高凌, 张 勇).Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2005, 25(2)：188. [12] CHENG Guo-an(程国安).Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2005, 25(3)：351. [13] ZHU Wen-qing, WU You-zhi, ZHENG Xin-you, et al(朱文清, 吴有智, 郑新友, 等).Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2005, 25(4)：509. [14] ZHOU Rui, AN Zhong-wei, CHAI Sheng-yong(周 瑞, 安忠维, 柴生勇).Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2004, 24(8)：922. [15] Enrique Ortí, Raúl Crespo Carmen Piqueras, et al.J.Mater.Chem., 1996, 6(11)：1751. [16] Leznoff C C, Lever A B P.Phthalocyanines：Properties and Applications.New York：CVH, 1989.11. [17] Mckeown N B.Phthalocyanines Materials：Synthesis, Structure and Function.Cambridge：Cambridge University Press, 1998.13. [18] Luwu B.Photolumimescence of Liquid and Solid(液体和固体的光致发光).Beijing：Science Press(北京：科学出版社), 1958.13. [19] Vincett P S, Voigt E M.Eieckhoff K E.Journal of Chemical Physics, 1971, 55(8)：4131. [20] Engel M K.Kawamura Rikagaku Kenkyusho Hokoku, 1997,(8)：11.
