期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 35, 期 8, 页码 801-806出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201400006
关键词
nanocomposites; oligofluorenes; polyhedral oligomeric silsesquioxanes; pure blue light
资金
- Science and Engineering Research Council of Agency for Science, Technology and Research of Singapore [1123004024]
- National University of Singapore
Emission of conjugated polymers is known to undergo bathochromic shift from solution to film formation due to - stacking in the solid state. In this report, a series of pearl-necklace-like hybrid polymers is designed via the hydrosilylation condensation between bifunctional polyhedral oligomeric silsesquioxanes (B-POSS) and oligofluorene segments. Optoelectronic analyses unequivocally show that the presence of these interconnecting B-POSS can effectively reduce red-shift in photoluminescence and electroluminescence during film formation. These hybrid poly(oligofluorenes) display stable blue emission with high color purity. Thermal analyses also indicate that they are vitrified polymers with high glass transition temperature (up to 125 degrees C). We believe that this strategy can be extended to other conjugated systems to control color purity in electroactive materials and holds promise as new emissive materials for various applications.
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