Home > Papers

 
 
Effect of pi-pi Stacking on the Self-Assembly of Azomethine Type Rod-Coil Molecules
YU Yingfeng 1 * #,LIU Yi 2,ZHONG Xinhui 2,SU Huihuang 2,GAN Wenjun 3
1.The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, Fudan University
2.The Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai, 200433, China
3.Department of Macromolecular Materials and Engineering, College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 200065,China.
*Correspondence author
#Submitted by
Subject:
Funding: National Natural Science Foundation of China (No.NNSFC No. 20704008, No. 20974027), and the Specialized Research Fund for the Doctoral Program of Higher Education of China)
Opened online: 4 January 2011
Accepted by: none
Citation: YU Yingfeng,LIU Yi,ZHONG Xinhui.Effect of pi-pi Stacking on the Self-Assembly of Azomethine Type Rod-Coil Molecules[OL]. [ 4 January 2011] http://en.paper.edu.cn/en_releasepaper/content/4401541
 
 
The role of pi-pi stacking in the molecular self-assembly behavior, the mesogenic transitions and fluorescent properties was investigated for coil-rod-coil molecules with two ethylene oxide coil units and aromatic azomethine rod units. Three kinds of rod-coil molecules with different rod units were synthesized and characterized by differential scanning calorimetry (DSC), polarized optical microscope (POM), X-ray diffraction (XRD), transmission electronic microscope (TEM), absorption and photoluminescence. With strong pi-pi stacking interaction between coplanar molecules, fibril structure in solution is formed while the fluorescent emission shows a quick increase of the intensity of short wavelength with the increase of solution concentration. Spherical aggregations in solution are formed with the increase of the twisting of the rod segment plane, which decreases the pi-pi stacking interaction and thus enlarges the intermolecular spacing. Simulation work carried out in Material Studio corresponds well with the experiment results of aggregations and mesogenic transitions.
Keywords:rod-coil;azomethine;self-assembly;pi-pi stacking interaction
 
 
 

For this paper

  • PDF (0B)
  • ● Revision 0   
  • ● Print this paper
  • ● Recommend this paper to a friend
  • ● Add to my favorite list

    Saved Papers

    Please enter a name for this paper to be shown in your personalized Saved Papers list

Tags

Add yours

Related Papers

Statistics

PDF Downloaded 713
Bookmarked 0
Recommend 5
Comments Array
Submit your papers