Abstract:A photoluminescence polymer was prepared using acrylamide as a monomer, a large excess of ethyleneglycol dimethacrylate as the cross-linking agent, and curcumin as a fluorescence additive. The polymer was ground into powder and screened in order to get even powder, whose diameter was from 40 to 75 μm. The emission spectra of curcumin in solid powder polymer show a strong blue shift compared with that of curcumin in C2H5OH solution. Meanwhile, rhodamine 6G, tetraiodofluorescein and phloxin have the same phenomenon of blue shift. Based on these facts, we speculate that the mechanism is probably single molecular luminescence because of the limit effect in three dimension space of the polymer. The molecule fluorescence peak was also depending on its environment because the surrounding electron field affected the molecule luminescence in polymer.
[1] WANG Dong-mei et al(王冬梅等). Chem. J. Chin. Univ.(高等学校化学学报),2001,22(4):695. [2] GAO Chang-you, YANG Bo, SHEN Jia-cong(高长有,杨 柏,沈家骢). Journal of Functional Polymers(功能高分子学报),1995,8(4):461. [3] LI Zhi-zhang et al(李治章等). Chemical Sensors(化学传感器),1997,17(3):203. [4] YANG Huang-hao et al(杨黄浩等). Chem. J. Chin. Univ.(高等学校化学学报),2001,22(5):754. [5] WANG Guang-bin et al(王光斌等). Acta Optica Sinica(光学学报),2001,21(4):494. [6] Aokl H et al. Jpn. J. Appl. Phys., 1996, 5(1A): 168. [7] Egami C et al. Appl. Phys.(B), 1997, 64(4): 471. [8] XUE Yan, XIA Tian, ZHAO Jian-bin(薛 妍,夏 天,赵建斌). Chinese Traditional and Herbal Drugs(中草药),2000,31(2):150. [9] 徐克勤主编. 精细有机化工原料及中间体手册. 北京:化学工业出版社,1998. 1~347. [10] LAI Jia-ping et al(赖家平等). Chin. J. Anal. Chem.(分析化学),2001,29(7):836. [11] Karsten Haupt. Analyst, 2001, 126(6): 747. [12] 陈国珍等. 荧光分析法. 北京:科学出版社,1990. 5. [13] YANG Yang et al(杨 阳等). Chem. J. Chin. Univ.(高等学校化学学报),2002,23(5):768. [14] WANG Sui et al(王 邃等). Spectrochim. Acta Part A, 2003, 59(6): 1139. [15] XU Chun-xiang et al(徐春祥等). Chinese Science Bulletin(科学通报),2001,46(12):984. [16] SHI Yan-li, ZHANG Xiao-gang, LI Hu-lin(史彦莉,张校刚,力虎林). Chem. J. Chin. Univ.(高等学校化学学报),2001,22(5):821.