Park S, Han Y. Novel pH-sensitive polymers containing sulfonamide groups [J]. Macromol. Rapid Commun., 1999, 20 (5):269-273.[2] Galaev I Y, Mattiasson B. Smart polymers and what they could do in biotechnology and medicine [J]. Trends Biotechno., 1999, 17 (8):335-340.[3] Roy I, Gupta M N. Smart polymeric materials: Emerging biochemical applications [J]. Chem Bio., 2003, 10 (12):1161-1171.[4] Hang C B, Ren A X. Development of a pH Probe based on the "Off-On-Off" display of dluorescence emission of 4-Dimethylamino-4 -dimethylaminostilben [J]. J. Instru. Anal. (分析测试学报), 2007, 26 (4):463-467 (in Chinese).[5] Zhang G L, Chuai Y T, Guo H, et al. Synthesis and electrophosphorescence of a red platinum (Ⅱ) qinoxaline complexes [J]. Acta Phys. Chim. Sin.(物理化学学报), 2005, 21 (2):1407-1410 (in Chinese).[6] Wu Q H, Wang C H, Song X M, et al. Microwave-assisted synthesis and photolum inescence of a new triplet iridium (III) quinoxaline complex [J]. Chem. Reg. (化学试剂), 2011, 33 (2):111-113 (in Chinese).[7] Pan D, Ning J H, Cai H G. Microwave-assisted synthesis and photoluminescence of a novel Iridium (Ⅲ) quinoxaline complex [J]. Fin. Chem. Interm. (精细化工中间体), 2009, 39 (2):50-52 (in Chinese).[8] Si Z, Li X, Li X, et al. Synthesis, photoluminescence, and theoretical studies of novel Cu(I) complex [J]. Inorg. Chem. Commun., 2009, 12 (10):1016-1019.[9] Wu D G, Huang C H, Gan L B, et al. Photosensitized electron injection from an ITO electrode to trichromophore dyes deposited on langmuir-blodgett films [J]. Langmuir, 1999, 15 (21):7276-7281.[10] Ashwini K A, Samson A J. Electrochemical properties and electronic structures of conjugated polyquinolines and polyanthrazolines [J]. Chem. Mater., 1996, 8 (2):579-589.[11] Schmidt M W, Baldridge K K, Boatz J A, et al. General atomic and molecular electronic structure system [J]. J. Comput. Chem., 1993, 14 (11):1347-1363.[12] Gill P M W. Obituary: Density functional theory [J]. J. Chem., 2001, 54 (11):661-662.[13] Chien S H, Gill P M W. SG-0: A small standard grid for DFT quadrature on large systems [J]. J. Comput. Chem., 2006, 27 (6):730-739.[14] Grafenstein J, Izotov D, Cremer D. Efficient density-functional theory integrations by locally augmented radial grids [J]. J. Chem. Phys., 2007, 127 (16):164113-1-7.[15] Tawada Y, Tsuneda T, Yanagisawa S, et al. A long-range-corrected time-dependent density functional theory [J]. J. Chem. Phys., 2004, 120 (18):8425-8433.[16] Hirata S, Head-Gordon M. Time-dependent density functional theory within the Tamm-Dancoff approximation [J]. Chem. Phys. Lett., 1999, 314 (3-4):291-299.