光谱学与光谱分析 |
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The Influence of Pyridyl-Carboxylic Acid Intermolecular H-Bond on Photoisomerization and Photochemical Stabilities |
WU Ying1,ZHOU Hong-wei2,BU Feng-quan3,TIAN Yan-qing2,JIANG Shi-mei1* |
1. State Key Laboratory for Supramolecular Structure and Materials,Jilin University,Changchun 130012,China 2. College of Chemistry,Jilin University,Changchun 130012,China 3. Department of Analytical Biochemistry,Institute of Frontier Medical Sciences,Jilin University,Changchun 130012,China |
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Abstract A new type of liquid crystalline was formed through self-assembly via intermolecular hydrogen bonding between the carboxylic acid and the pyridyl group of the stilbazoles. Cholesteryl butane diacid single ester (CSA) was synthesized for use as H-bond donor and the stilbazole derivatives (NCn) were prepared as H-bond acceptors. The spectroscopic behavior and the photochemical stabilities of these two compounds,NCn and its intermolecular H-bonding complex CSA·NCn were investigated by UV-Vis spectroscopy. The results show that these two compounds easily undergo photoisomerization from trans to cis isomers in alcohol. In chloroform solution,the CSA·NCn only undergoes trans-cis photoisomerization,while NCn exhibits not only trans-cis isomerization but also a special photoreaction. The reason is that in CSA·NCn compounds,the pyridyl N-end group is forms intermolecular H-bonding with CSA,and can’t catch the H+ and the radical. It is proved that this intermolecular H-bond was very stable when being exposed to UV light.
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Received: 2006-11-12
Accepted: 2007-02-12
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Corresponding Authors:
JIANG Shi-mei
E-mail: smjiang@jlu.edu.cn
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[1] Brunsveld L,Folmer B J B,Meijer E W,et al. Chem. Rev.,2001,101: 4071. [2] HAO Yu-ying,GAO Zhi-xiang,WANG Hua,et al(郝玉英,高志翔,王 华,等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2006,26(3): 491. [3] Kato T,Fukumasa M,Jean M,et al. Chem. Mater.,1995,7: 368. [4] McCubbin J A,Tong X,Zhao Y,et al. Chem. Mater.,2005,17: 2574. [5] Massiot P,Imperor-Clerc M,Veber M,et al. Chem. Mater.,2005,17: 1946. [6] Jiang S M,Xu W Q,Zhao B,et al. Mater. Sci. Eng. C,2000,11: 85. [7] Huck D M,Nguyen H L,Coles S J,et al. J. Mater. Chem.,2002,12: 2879. [8] Nemoto N,Abe J,Miyata F,et al. J. Mater. Chem.,1998,8: 1193. [9] McMahon J J,Gergel T J,Otterson D M,et al. Surface Science,1999,440: 357. [10] Quina F H,Whitten D G. J. Am. Chem. Soc.,1975,97: 1602. [11] Cowan D O,Drisko R L(D O 科恩,R L德里斯科). Elements of Organic Photochemistry(有机光化学原理). Beijing: Science Press(北京:科学出版社),1989. 369. [12] HUANG Liang,YU De-quan(黄 量,于德泉). The Application of UV Spectroscopy in Organic Chemistry(紫外光谱在有机化学中的应用). Beijing: Science Press(科学出版社),1988. [13] Paez R M,Hoggard P E. Photochem. Photobiol. Sci.,2003,2: 142. |
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