Acta Chimica Sinica ›› 2012, Vol. 0 ›› Issue (04): 499-504.DOI: 10.6023/A1105167 Previous Articles     Next Articles

Full Papers


张瑀健a, 谢彬a, 张丽洋a, 马丽a, 何书艳a, 李国文b   

  1. a 中国石油大庆化工研究中心 大庆 163714;
    b 吉林大学超分子材料与结构国家重点实验室 长春 130012
  • 投稿日期:2011-05-16 修回日期:2011-08-15 发布日期:2011-09-28
  • 通讯作者: 张瑀健
  • 基金资助:

    国家自然科学基金(No. 20874037)资助项目.

Preparation and Properties of Amphiphilic Polymer Nanospheres Containing Aza-crown ether

Zhang Yujiana, Xie Bina, Zhang Liyanga, Ma Lia, He Shuyana, Li Guowenb   

  1. a Daqing Petrochemical Research Center, Daqing 163714;
    b State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012
  • Received:2011-05-16 Revised:2011-08-15 Published:2011-09-28
  • Supported by:

    Project supported by the National Natural Science Foundation of China (No. 20874037).

An amphiphilic polymer containing adenine and aza-crown ethers, poly-{[N,N-bis(2-ethoxy)-1,10-diaza-18-crown-6][5-methylene-(1-adenine)]sophthaloyl ester} (PCASE), was synthesized. The SEM morphology observed indicates that the amphiphilic PCASE polymer self-organized into diameters of about 140~210 nm nanospheres in dilute aqueous solution after recognized with 5-fluorouracil spontaneously. The sizes of PCASE/5-flu nanospheres in dilute aqueous solution determined by dynamic light scattering (DLS) are mainly dispersed at 120~230 nm. The molecule recognition based on hydrogen bond between adenine of polymer and 5-fluorouracil substrate in PCASE/5-flu nanospheres was studied. After recognition the C(2)=O stretching vibration at 1724 cm-1 of 5-fluorouracil subtract shifted to 1718 cm-1, the NH2 stretching vibration at 3324 cm-1 disappeared, and a new peak at 3432 cm-1 arised, indicating the formation of hydrogen bonds between 5-fluorouracil and adenine in polymer PCASE.The study on variable temperature FTIR show that the peak 1718 cm-1 gradually shifted back to the position at 1724 cm-1, and the new peak 3432 cm-1 disappeared finally, indicating that the H-bond was broken.

Key words: amphiphilic polymer, aza-crown ether, self-organization, molecular recognition