Self-Assembly of Poly{1,4-phenylene-[9,9-bis(4-phenoxy-butylsulfonate)]fluorene-2,7-diyl} with Oppositely Charged Phenylenevinylene Oligoelectrolytes

被引:15
作者
Costa, Telma [1 ,2 ]
Marques, Ana T. [1 ,3 ]
Sergio Seixas de Melo, J. [1 ]
Thomas, Alexander W. [2 ]
Garner, Logan E. [2 ]
Scherf, Ullrich [3 ]
Bazan, Guillermo C. [2 ]
Burrows, Hugh D. [1 ]
机构
[1] Univ Coimbra, Dept Chem, Ctr Quim Coimbra, P-3004535 Coimbra, Portugal
[2] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA
[3] Berg Univ Wuppertal, D-42097 Wuppertal, Germany
关键词
CONJUGATED POLYELECTROLYTES; ENERGY-TRANSFER; CONFORMATIONAL RELAXATION; ELECTRON-TRANSFER; WATER; PHOTOPHYSICS; POLYFLUORENE; AGGREGATION; POLYMERS; SOLUBILIZATION;
D O I
10.1021/jp409577y
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The interaction of the water-soluble conjugated polyelectrolyte (CPE) poly{1,4-phenylene-[9,9-bis(4-phenoxy-butylsulfonate)]fluorene-2,7-diyl} (PBS-PFP) (degree of polymerization, DP, similar to 3-6) with various concentrations of a homologous series of oppositely charged amphiphilic phenylenevinylene oligomers was investigated in water:dioxane mixtures and in aqueous micellar solutions of the non-ionic surfactant n-dodecylpentaoxyethylene glycol ether. The excellent spectral overlap between the CPE fluorescence and the conjugated oligoelectrolyte (COE) absorption indicates that energy transfer between these is a highly favored process, and can be tuned by changing the COE chain length. This is supported by time-resolved fluorescence data. The overall results provide support for different types of self-assembly, which are sensitive to the solvent environment and to the size of the phenylenevinylene oligoelectrolyte chain. It is suggested that large aggregates are formed in water:dioxane mixtures, while decorated core shell structures are present in the surfactant solutions.
引用
收藏
页码:613 / 623
页数:11
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