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Suppressing aggrega...
Suppressing aggregation induced quenching in anthracene based conjugated polymers
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- Congrave, Daniel G. (författare)
- Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England.
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- Drummond, Bluebell H. (författare)
- Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England.
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- Gray, Victor, Dr, 1988- (författare)
- Uppsala universitet,Fysikalisk kemi,Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England.
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- Bond, Andrew D. (författare)
- Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England.
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- Rao, Akshay (författare)
- Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England.
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- Friend, Richard H. (författare)
- Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England.
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- Bronstein, Hugo (författare)
- Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England.;Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England.
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Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England. (creator_code:org_t)
- 2021
- 2021
- Engelska.
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Ingår i: Polymer Chemistry. - : Royal Society of Chemistry. - 1759-9954 .- 1759-9962. ; 12:12, s. 1830-1836
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://pubs.rsc.org...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- Anthracene is a highly valuable building block for luminescent conjugated polymers, particularly when a large singlet-triplet energy gap (Delta E-ST) is desired. Unfortunately, the extended pi system of anthracene imparts a strong tendency for polymer aggregation, resulting in detrimental effects on its solid state photophysics. A large decrease in photoluminescence quantum yield (PLQY, phi(F)) on going from solution to the solid state is especially common, represented in terms of a low phi(R) (phi(R) = phi(F film)/phi(F sol.)). Significant and undesirable red-shifting of fluorescence in the solid state is also typical due to processes such as excimer formation. In this work a series of alkylene-encapsulated conjugated anthracene polymers is developed to overcome these challenging problems. We demonstrate a promising material which displays a good solid state PLQY that is effectively unchanged compared to solution measurements (phi(R) similar to 1, phi(F film) similar to 40%), alongside an identical PL 0-0 transition wavelength in solution and thin film. Such a direct transfer of luminescence properties from solution to the solid state is remarkable for a conjugated polymer and completely unprecedented for one based on anthracene.
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
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