Self-assembly of insulated molecular wires of a water-soluble cationic PPV and anionic dendrons

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2009,（14）
• 页码范围: 2451-2456
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11434-009-0427-5

摘要

Insulated molecular wires of poly(phenylenevinylene) (PPV) were prepared by wrapping the conjugated backbones with dendrons through a noncovalent approach. It was found that electrostatic interaction between the quaternary ammonium groups of PPV-1 and the carboxylate moieties in dendrons induced the packing of dendrons along PPV-1 conjugated backbones. Absorption and emission spectroscopic examinations in solution and solid film indicated that the PPV-1 backbones adopted a more planar and isolated conformation in the complexes. Furthermore, interchain interactions in the complexes could be greatly reduced, improving the quantum yield of PPV-1.