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Updated: Mar 1, 2026

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Published on: May 27, 2020
Can time-dependent density functional theory predict intersystem crossing in organic chromophores? A case study on
Teck Lip Dexter Tam1, Ting Ting Lin, Ming Hui Chua
1Institute of Materials Research and Engineering (IMRE), Agency of Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634, Singapore. dexter-tam@imre.a-star.edu.sg.
Abstract:
Here we utilized new diagnostic tools in time-dependent density functional theory to explain the trend of intersystem crossing in benzo(bis)-X-diazole based donor-acceptor-donor type molecules. These molecules display a wide range of fluorescence quantum yields and triplet yields, making them excellent candidates for testing the validity of these diagnostic tools. We believe that these tools are cost-effective and can be applied to structurally similar organic chromophores to predict/explain the trends of intersystem crossing, and thus fluorescence quantum yields and triplet yields without the use of complex and expensive multireference configuration interaction or multireference pertubation theory methods.
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