高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (9): 1422.

• 论文 • 上一篇    下一篇

胆甾液晶二氮杂冠醚-Eu(Ⅲ)配合物LB膜和荧光性质研究

李龙章1, 朱家理1, 赵为1, 谢明贵1, 蒋青1, 王令萱2, 黎甜楷2   

  1. 1. 四川大学化学系, 成都, 610064;
    2. 中国科学院感光化学研究所, 北京, 100101
  • 收稿日期:1997-07-31 出版日期:1998-09-24 发布日期:1998-09-24
  • 通讯作者: 谢明贵
  • 作者简介:李龙章,男,43岁,硕士,工程师.
  • 基金资助:

    国家自然科学基金(批准号:29372063)和中国科学院感光化学研究所光化学开放实验室资助课题.

Studies on LB Film and Fluorescence Properties of Cholesteric Liquid Crystalline Diaza Crown Ether and Its Complex with Eu(Ⅲ)

LI Long-Zhang1, ZHU Jia-Li1, ZHAO Wei1, XIE Ming-Gui1, JIANG Qing1, WANG Ling-Xuan2, LI Tian-Kai2   

  1. 1. Department of Chemistry, Sichuan University, Chengdu, 610064;
    2. The Institute of Photographic Chemistry, The Science Academy of China, Beijing, 100101
  • Received:1997-07-31 Online:1998-09-24 Published:1998-09-24

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摘要： 研究了胆甾液晶二氮杂冠醚N,N'-双[胆甾-5-烯-3β-氧羰甲基]-1,10-二氮-4,7,13,16-四氧环十八烷(1)及其与Eu3+的配合物(2)、2与苯甲酸的混配物(3)的LB膜和荧光性质.结果表明:1、2和3都在水溶液亚相液面形成稳定的单分子膜,但只有1的单分子面积受亚相pH的影响.1、2和3的单分子膜都容易转移到石英基片上形成LB膜,其中2和3为X型,转移比分别为0.6和1.0.在LB膜中,在2的荧光激发波长范围比在溶液中的宽,荧光强度也比在溶液中的强得多.在2中添加苯甲酸形成3可改善LB膜中分子有序排列,荧光强度增强到无苯甲酸时的2.0倍.所有这些LB膜,即使添加了苯甲酸的,都不是很稳定.

关键词: 胆甾液晶二氮杂冠醚, 铕, LB膜, 荧光

Abstract: LBfilm and flourescence properties of the crown ether(1)( N,N'-bi(cholest-5-en-3β-oxocarbonylmethyl)-1,10-diaza-4,7,13,16-tetra-oxocycloctadecane), its complex with Eu 3+ (2) and the mixture of 2 and benzoic acid(3) have been studied respectively. All of 1, 2 and 3 can from perfect monolayer on the subphase of water and only the monomolecular area of 1 is changeable with subphase pH. The monolayers of 1, 2 and 3 can be transfered to quartz glass substrate fo form LBfilm respectively. Among the three LBfilms, 2 and 3 are Xtype and their transfering ratio are 06 and 10 respectively. Fluorescence exciting wavelength of 2 in solution is wider than that of Eu 3+. The fluorescence intensity of 2 of LBfilm is much greater than that in solution. Addition of benzoic acid to 2 also increases the fluorescence intensity of the LBfilm, because benzoic acid makes the LBfilm structure better. These LBfilms, even containing benzoic acid, are not very stable.

Key words: Cholesteric liquid crystalline diaza crown ether, Europium, LB film, Fluorescence

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