TY - JOUR
T1 - Ambient-temperature near-IR phosphorescence and potential applications of rhenium-oxo corroles
AU - Borisov, Sergey M.
AU - Einrem, Rune F.
AU - Alemayehu, Abraham B.
AU - Ghosh, Abhik
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Presented herein is a first photophysical investigation of a series of rhenium(v)-oxo tris(p-X-phenyl)corroles, Re[TpXPC](O), where X = CF 3 , F, H, CH 3 , and OCH 3 . The complexes all exhibit near-IR phosphorescence in anoxic toluene at room temperature, with emission maxima at 780 ± 10 nm, phosphorescence decay times of 56-74 μs and quantum yields of 1.07-1.52%, the highest reported to date for phosphorescent corrole derivatives. We have also demonstrated that the dyes may serve as indicators in optical oxygen sensors and as sensitizers in triplet-triplet-annihilation-based upconversion. Although the ReO corroles are not superior to benchmark benzoporphyrin complexes that are currently used in these applications, they may prove useful in certain areas such as optical multianalyte sensing owing to improved flexibility in the available spectral properties of the dyes. The high thermal and photochemical stability of the complexes also bodes well for their deployment as new, phosphorescent sensitizers in photodynamic therapy.
AB - Presented herein is a first photophysical investigation of a series of rhenium(v)-oxo tris(p-X-phenyl)corroles, Re[TpXPC](O), where X = CF 3 , F, H, CH 3 , and OCH 3 . The complexes all exhibit near-IR phosphorescence in anoxic toluene at room temperature, with emission maxima at 780 ± 10 nm, phosphorescence decay times of 56-74 μs and quantum yields of 1.07-1.52%, the highest reported to date for phosphorescent corrole derivatives. We have also demonstrated that the dyes may serve as indicators in optical oxygen sensors and as sensitizers in triplet-triplet-annihilation-based upconversion. Although the ReO corroles are not superior to benchmark benzoporphyrin complexes that are currently used in these applications, they may prove useful in certain areas such as optical multianalyte sensing owing to improved flexibility in the available spectral properties of the dyes. The high thermal and photochemical stability of the complexes also bodes well for their deployment as new, phosphorescent sensitizers in photodynamic therapy.
UR - http://www.scopus.com/inward/record.url?scp=85065871832&partnerID=8YFLogxK
U2 - 10.1039/c8pp00473k
DO - 10.1039/c8pp00473k
M3 - Article
C2 - 30801581
AN - SCOPUS:85065871832
SN - 1474-905X
VL - 18
SP - 1166
EP - 1170
JO - Photochemical & Photobiological Sciences
JF - Photochemical & Photobiological Sciences
IS - 5
ER -