Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 31, Issue 9-10, Pages 861-867Publisher
WILEY-BLACKWELL
DOI: 10.1002/marc.200900885
Keywords
conjugated polymers; crystal structure; cyclopentadithiophenone; donor-acceptor compounds; metallopolymers; platinum(II) polyynes; solar cells
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Funding
- Hong Kong Research Grants Council [HKBU 202607]
- Hong Kong Baptist University [FRG/07-08/II-65]
- National Science Foundation of China [50803051, 20974091]
- Hunan Provincial Education Department [06C827]
- University Development Fund
- Strategic Research Theme
- University of Hong Kong
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Two solution-processable metallopolyynes of platinum functionalized with the electron-deficient 4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one spacer and their model molecular complexes were synthesized and developed for the applications of polymer solar cells. These metallated polymers possess extremely low bandgaps of 1.44-1.53 eV which extend toward the near-infrared (NIR) range of the solar spectrum, and represent the lowest optical bandgap yet reported for platinum(II) metallopolyynes to date. The structural flexibility, processibility, and good photovoltaic performance make cyclopentadithiophenone-containing polymers prominent candidates for NIR photovoltaic applications.
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