| المؤلفون: |
Wells KA; Department of Chemistry, North Carolina State University, Raleigh, North Carolina, 27695-8204, USA. fncastel@ncsu.edu., Yarnell JE; Department of Chemistry, North Carolina State University, Raleigh, North Carolina, 27695-8204, USA. fncastel@ncsu.edu.; Department of Chemistry & Chemistry Research Center, United States Air Force Academy, Colorado Springs, Colorado, 80840-6230, USA., Sheykhi S; Department of Chemistry, North Carolina State University, Raleigh, North Carolina, 27695-8204, USA. fncastel@ncsu.edu., Palmer JR; Department of Chemistry, North Carolina State University, Raleigh, North Carolina, 27695-8204, USA. fncastel@ncsu.edu., Yonemoto DT; Department of Chemistry, North Carolina State University, Raleigh, North Carolina, 27695-8204, USA. fncastel@ncsu.edu., Joyce R; Department of Chemistry, North Carolina State University, Raleigh, North Carolina, 27695-8204, USA. fncastel@ncsu.edu., Garakyaraghi S; Department of Chemistry, North Carolina State University, Raleigh, North Carolina, 27695-8204, USA. fncastel@ncsu.edu., Castellano FN; Department of Chemistry, North Carolina State University, Raleigh, North Carolina, 27695-8204, USA. fncastel@ncsu.edu. |
| مستخلص: |
The steady-state and ultrafast to supra-nanosecond excited state dynamics of fac -[Re(NBI-phen)(CO) 3 (L)](PF 6 ) (NBI-phen = 16H-benzo[4',5']isoquinolino[2',1':1,2]imidazo[4,5- f ][1,10]phenanthrolin-16-one) as well as their respective models of the general molecular formula [Re(phen)(CO) 3 (L)](PF 6 ) (L = PPh 3 and CH 3 CN) has been investigated using transient absorption and time-gated photoluminescence spectroscopy. The NBI-phen containing molecules exhibited enhanced visible light absorption with respect to their models and a rapid formation (<6 ns) of the triplet ligand-centred (LC) excited state of the organic ligand, NBI-phen. These triplet states exhibit an extended excited state lifetime that enable the energized molecules to readily engage in triplet-triplet annihilation photochemistry. |
