Open AccessFinal Progress Report
Author(s) -
Josef Michl
Publication year - 2011
Language(s) - English
Resource type - Reports
DOI - 10.2172/1028143
Subject(s) - chromophore , singlet fission , singlet state , fission , yield (engineering) , quantum yield , quantum , chemical physics , chemistry , materials science , photochemistry , physics , nuclear physics , optics , fluorescence , quantum mechanics , excited state , composite material , neutron
In this project we have established guidelines for the design on organic chromophores suitable for producing high triplet yields via singlet fission. We have proven their utility by identifying a chromophore of a structural class that had never been examined for singlet fission before, 1,3-diphenylisobenzofuran, and demonstrating in two independent ways that a thin layer of this material produces a triplet yield of 200% within experimental error. We have also designed a second chromophore of a very different type, again of a structural class that had not been examined for singlet fission before, and found that in a thin layer it produces a 70% triplet yield. Finally, we have enhanced the theoretical understanding of the quantum mechanical nature of the singlet fission process