Reversible Control of Fluorescence Based on the Interaction Among CdTe QDs, CHA and AngⅠ

doi:10.3969/j.issn.0251-0790.2012.06.012

Abstract

Abstract: Using mercaptopropinic acid(MPA) as the stabilizer, CdTe quantum dots(QDs) were synthesized in aqueous solution. Their particle sizes and morphology were characterized by transmission electron microscope(TEM) and atomic force microscope(AFM). Chlorogenic acid(CHA) can quench the fluorescence of CdTe QDs effectively, and the quenching values of fluorescence were proportional to the concentration of CHA in a certain concentration range. The interaction between CdTe QDs and CHA was investigated via fluorescence spectrometry, UV-Vis absorption spectrometry and Fourier transform infrared spectrometry. The preliminary judgement of the quenching mechanism is dynamic quenching, and a theoretical basis of fluorescent spectrometry methods for the determination of trace amounts of CHA was provided. When angiotensinⅠhuman acetate salt hydrate(AngⅠ) was added into the CdTe QDs-CHA system, the fluorescence of CdTe QDs was recovered in a certain concentration range, thus reversible control of fluorescence of the QDs was realized. The process of fluorescent quenching and recovering of CdTe QDs has a guiding significance for the design of fluorescence sensor and the study of mechanism of reversible control of fluorescence.

Key words: CdTe quantum dots(QDs), Chlorogenic Acid, AngiotensinⅠhuman acetate salt hydrate, Dynamic quenching, Reversible control of fluorescence

CLC Number:

O657

TrendMD:

WANG Xiao-Dan, YIN Peng-Fei, GONG Hui-Ping, LI Ping-Ping, LIU Zheng-Qing, HE You-Qiu. Reversible Control of Fluorescence Based on the Interaction Among CdTe QDs, CHA and AngⅠ[J]. Chem. J. Chinese Universities, 2012, 33(06): 1182.

References

[1] Jose R., Zhao L., Martha L., Rosa G., Hong J., Jorge L.. J. Hazardous Mater.[J], 2011, 186(1): 1—15 [2] Zhuang J. Q., Zhang X. D., Wang G., Li D. M., Yang W. S., Li T. J.. J. Mater. Chem.[J], 2003, 13(7): 1853—1857 [3] LI Zhong(李众), ZHU Xin(祝欣), DONG Chao-Qing(董朝青), HUANG Xiang-Yi(黄香宜), CHEN Hong-Jin(陈虹锦), REN Ji-Cun(任吉存). Chem. J. Chinese Universities(高等学校化学学报)[J], 2010, 31(10): 1905—1915 [4] Murray C. B., Noms D. J., Bawendi M. G.. J. Am. Chem. Soc.[J], 1993, 115(19): 8706—8715 [5] ZHANG Hao(张皓), YANG Bai(杨柏). Chem. J. Chinese Universities(高等学校化学学报)[J], 2008, 29(2): 217—229 [6] LIU Xiao-Hong(刘晓红), LUO Jin-Ping(罗金平), TIAN Qing(田青), LIU Chun-Xiu(刘春秀), CAI Xin-Xia(蔡新霞). Chin. J. Anal. Chem.(分析化学)[J], 2011, 39(2): 163—167 [7] MAO Jie(毛杰). Design, Characterization and Properties of Functional Fluorescence Systems(功能荧光体系的设计、表征及性质研究), Lanzhou: Lanzhou University, 2009 [8] XU Feng-Bo(徐凤波), LU Yi(陆猗). Chemical Research(化学研究)[J], 2000, 11(2): 50—57 [9] Li S., Huang K. L., Zhong M., Guo J., Wang W. Z., Zhu R. H.. Spectrochimica Acta Part A[J] 2010, 77(3): 680—686 [10] Yin Y. X., Xie M. X., Wu H. Z., Jiang M., Zheng J. Q., Wei Q.. Biochimie.[J], 2009, 91(7): 820—825 [11] Grnas P., Neunert G., Baczyński K., Polewski K.. Food Chem.[J], 2009, 114(1): 190—196 [12] XIAO Xiao-Feng(肖晓峰), CHEN Bo(陈波), YAO Shou-Zhuo(姚守拙). Chemical Reagents(化学试剂)[J], 2005, 27(8): 495—496 [13] Wright J. W., Yamamoto B. J., Harding J. W.. Progress in Neurobiology[J], 2008, 84(2): 157—181 [14] He T. X., Liang Q. L., Luo T. T., Wang Y. M., Luo G. A.. J. Solution Chem.[J], 2010, 39(11): 1653—1664 [15] Weng J. F., Song X. T., Li L., Qian H. F., Chen K. Y., Xu X. M.,Cao C. X., Ren J. C.. Talanta[J], 2006, 70(2): 397—402 [16] Peng J. J., Liu S. P., Yan S. G., Fan X. Q., He Y. Q.. Colloids and Surfaces A[J], 2010, 359(1—3): 13—17 [17] CHANG Jian-Hua(常建华), DONG Qi-Gong(董绮功). Spectral Theory and Analysis(波谱原理及解析)[M], Beijing: Science Press, 2001: 64—65 [18] WANG Zong-Ming(王宗明), HE Xin-Xiang(何欣翔), SUN Dian-Qing(孙殿卿). Practical Infrared Spectroscopy(实用红外光谱学)[M], Beijing: Petroleum Industry Press, 1990: 4 [19] Efros A. L., Rosen M.. Annu. Rev. Mater. Sci.[J], 2000, 30: 475—521 [20] Sambur J. B., Novet T., Parkinson B. A.. Science[J], 2010, 330(1): 63—66 [21] Jagadeeswari S., Jhonsi M. A., Kathiravan A., Renganathan R.. J. Luminescence[J], 2011, 131(4): 597—602