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Author

Yang, Changduk
Advanced Tech-Optoelectronic Materials Synthesis Lab (ATOMS)
Research Interests
  • Optoelectronic materials synthesis/organic electronics, functionalization of carbonaceous solids, advanced materials chemistry, macromolecular chemistry

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Blue-emitting poly(2,7-pyrenylene)s: Synthesis and optical properties

Cited 37 times inthomson ciCited 34 times inthomson ci
Title
Blue-emitting poly(2,7-pyrenylene)s: Synthesis and optical properties
Author
Kawano, Shin-ichiroYang, ChangdukRibas, MarcosBaluschev, StanislavBaumgarten, MartinMuellen, Klaus
Keywords
CONJUGATED POLYMER-MOLECULES; GREEN EMISSION; ENERGY-TRANSFER; ELECTRON-TRANSFER; KETO DEFECT; POLYFLUORENE; PYRENE; FLUORESCENCE; ORIGIN; COPOLYMERS
Issue Date
200811
Publisher
AMER CHEMICAL SOC
Citation
MACROMOLECULES, v.41, no.21, pp.7933 - 7937
Abstract
The first 2,7-linked conjugated polypyrene tethering four aryl groups has been synthesized, and the photophysical properties of the polymer have been characterized. Due to the unique substitution with bulky aryl groups at the 4,5,9,10-positions of pyrene, the polymer although comprising large π-units is readily soluble in common organic solvents. The polymer has a blue fluorescence in solution with an emission band maximum at X = 429 nm, fulfilling the requirements for a blue-emitting polymer. To a first approximation, this can be attributed to electronically decoupled pyrene subunits due to the nodal properties of their frontier orbitals. Furthermore, in solution the intriguing blue fluorescence is combined with solvent-dependent features, which could be used as a probe for local solvent polarity. Finally, in the solid state, the red-shifted emission of the polymer could be strongly reduced by blending with a nonconjugated polymer such as polystyrene.
URI
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DOI
http://dx.doi.org/10.1021/ma8017316
ISSN
0024-9297
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