title: Red Phosphorescence from Benzo[2,1,3]thiadiazoles at Room Temperature.
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.
authors.affiliation: Department of Chemistry and ‡Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States.
authors.forename: Gregory D
authors.initials: GD
authors.lastname: Gutierrez
authors.affiliation: Department of Chemistry and ‡Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States.
authors.forename: Graham T
authors.initials: GT
authors.lastname: Sazama
authors.affiliation: Department of Chemistry and ‡Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States.
authors.forename: Tony
authors.initials: T
authors.lastname: Wu
authors.affiliation: Department of Chemistry and ‡Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States.
authors.forename: Marc A
authors.initials: MA
authors.lastname: Baldo
authors.affiliation: Department of Chemistry and ‡Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States.
authors.forename: Timothy M
authors.initials: TM
authors.lastname: Swager
mesh_terms: D003510:Cyclohexanes / Q000737:chemistry; D007202:Indicators and Reagents; D008163:Luminescent Measurements; D011789:Quantum Theory; D011827:Radiation; D013696:Temperature; D013830:Thiadiazoles / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D003510:Cyclohexanes; D007202:Indicators and Reagents; D013830:Thiadiazoles