7 June 2018 Improved fluorescence yields through selective photooxidation of conjugated polymer chromophores
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Abstract
The conjugated polymer MEH-PPV consists of two basic types of chromophores that we characterize as “isolated” and “aggregated.” Because the aggregated chromophores have lower emissive yields but are favored by energy migration, we show that preferential bleaching of the aggregated chromophores can result in substantially improved fluorescence quantum yield. We study a wide variety of sample types including solutions, dilute films, neat films, and core-shell particles and show that the degree to which luminescence improvements are possible depends on the organization of the chromophores.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Benjamin W. Martin, Christopher Melnychuk, Lewis J. Rothberg, "Improved fluorescence yields through selective photooxidation of conjugated polymer chromophores," Journal of Photonics for Energy 8(3), 032219 (7 June 2018). https://doi.org/10.1117/1.JPE.8.032219 . Submission: Received: 23 February 2018; Accepted: 22 May 2018
Received: 23 February 2018; Accepted: 22 May 2018; Published: 7 June 2018
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