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Volumn 128, Issue 12, 2006, Pages 4007-4016

The role of exciton hopping and direct energy transfer in the efficient quenching of conjugated polyelectrolytes

Author keywords

[No Author keywords available]

Indexed keywords

ENERGY TRANSFER; FLUORESCENCE; POLARIZATION; POLYELECTROLYTES; POLYMERS; QUENCHING;

EID: 33645455685     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja055630l     Document Type: Article
Times cited : (55)

References (37)
  • 15
    • 33645460485 scopus 로고    scopus 로고
    • note
    • Samples were prepared under degassed conditions. The time-resolved fluorescence experiments were performed under degassed conditions (using a circulating system) and repeated in a fast-rotating sample cell, which ensures that each laser shot (1-ms intervals) illuminates a fresh sample volume. The results were the same, showing that the presence of oxygen during the experiment does not cause changes in the polymer structure or the excitation dynamics. In addition, we checked for photodegradation by comparing sample absorption and emission as measured before and after the experiments.
  • 31
    • 33645451822 scopus 로고    scopus 로고
    • note
    • Direct excitation of the dye probes both free dye molecules in solution and those in the complex. Anisotropy decay to r ≈ 0 indicates that most dye molecules are free in solution. The contribution to the anisotropy from complexed dye molecules is just too small to be detected.
  • 36
    • 33645456245 scopus 로고    scopus 로고
    • note
    • In our previous report, the SV (ref 1) plots for quenching of PPESO3 by HMIDC were slightly superlinear. The difference observed here is because the ultrafast experiments were performed at higher polymer concentrations.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.