Synthesis and properties of crown ether containing poly(p-phenylenevinylene)
Liu, HW; Wang, S; Luo, YH; Tang, WH; Yu, G; Li, L; Chen, CF; Liu, YQ; Xi, F
AbstractA soluble PPV derivative (C-PPV) with high molecular weight, substituted with a crown ether in direct pi -conjugation at the 2,3-position, has been synthesized via a modified Gilch route in good yield. The double layer LED based on C-PPV (ITO/C-PPV/Alq(3)/Al) exhibits a high luminance of 730 cd m(-2), and emits yellow-green light with an external EL quantum efficiency of 0.04%. The fluorescence attenuation of the polymer solution is found upon K+, Na+,or Li+ binding. The AFM provides high-resolution images of C-PPV in thin films constructed from a very dilute solution in the absence and presence of metal ions. Worm-like images with well-defined width and height are observed only in the presence of K+, which is in striking contrast to the individual ball shape of C-PPV molecules in the absence of K+, or in the presence of Na+,or Li+. It was also observed that the worm-like images grew longer and longer as the solution of C-PPV in the presence of K+ stood longer. These unique self-assembling features of the C-PPV molecules may be attributed to the complexation of K+.
Indexed BySCI
WOS IDWOS:000172664200039
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Document Type期刊论文
Corresponding AuthorXi, F
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
2.Jilin Univ, Dept Chem, Changchun 130023, Peoples R China
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GB/T 7714
Liu, HW,Wang, S,Luo, YH,et al. Synthesis and properties of crown ether containing poly(p-phenylenevinylene)[J]. JOURNAL OF MATERIALS CHEMISTRY,2001,11(12):3063-3067.
APA Liu, HW.,Wang, S.,Luo, YH.,Tang, WH.,Yu, G.,...&Xi, F.(2001).Synthesis and properties of crown ether containing poly(p-phenylenevinylene).JOURNAL OF MATERIALS CHEMISTRY,11(12),3063-3067.
MLA Liu, HW,et al."Synthesis and properties of crown ether containing poly(p-phenylenevinylene)".JOURNAL OF MATERIALS CHEMISTRY 11.12(2001):3063-3067.
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