Red Phosphorescence from Benzo[2,1,3]thiadiazoles at Room Temperature
Gregory D. GutierrezDepartment of Chemistry and ‡Department of Electrical Engineering and Computer
Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United StatesGraham T. SazamaDepartment of Chemistry and ‡Department of Electrical Engineering and Computer
Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United StatesTony WuDepartment of Chemistry and ‡Department of Electrical Engineering and Computer
Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United StatesMarc A. BaldoDepartment of Chemistry and ‡Department of Electrical Engineering and Computer
Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United StatesTimothy M. SwagerDepartment of Chemistry and ‡Department of Electrical Engineering and Computer
Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
2016en
ABI
Abstract
We describe the red phosphorescence exhibited by a class of structurally simple benzo[2,1,3]thiadiazoles at room temperature. The photophysical properties of these molecules in deoxygenated cyclohexane, including their absorption spectra, steady-state photoluminescence and excitation spectra, and phosphorescence lifetimes, are presented. Time-dependent density functional theory calculations were carried out to better understand the electronic excited states of these benzo[2,1,3]thiadiazoles and why they are capable of phosphorescence.
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