TY - JOUR
T1 - Singly and Doubly N-Confused Calix[4]phyrin Organoplatinum(II) Complexes as Near-IR Triplet Sensitizers
AU - Pushpanandan, Poornenth
AU - Maurya, Yogesh Kumar
AU - Omagari, Toshihiro
AU - Hirosawa, Ryuji
AU - Ishida, Masatoshi
AU - Mori, Shigeki
AU - Yasutake, Yuhsuke
AU - Fukatsu, Susumu
AU - Mack, John
AU - Nyokong, Tebello
AU - Furuta, Hiroyuki
N1 - Funding Information:
The present work was supported by Grants-in-Aid (JP15K13646 to H.F.; JP16K05700 and JP17H05377 to M.I.; JP17H02772 to S.F.) from the Japan Society for the Promotion of Science (JSPS). Financial support from a bilateral program between the JSPS and the National Research Foundation (NRF) of South Africa is also acknowledged.
Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/10/16
Y1 - 2017/10/16
N2 - Organoplatinum(II) complexes of calix[4]phyrin analogues, singly N-confused calix[4]phyrin (Pt-2), and doubly N-confused calix[4]phyrin (Pt-3), were synthesized and characterized. The explicit structures of these organoplatinum(II) complexes were elucidated by single-crystal X-ray diffraction and spectroscopic studies. The introduction of N-confused pyrrole rings to the parent calix[4]phyrin scaffold was found to have profound effects on the photophysical properties, such as the bathochromic shifts of both the absorption and phosphorescence maxima. The triplet excited state properties of these platinum complexes were analyzed by DFT calculations at the B3LYP level. The organoplatinum(II) complexes derived from the deformed scaffolds can serve as potent triplet sensitizers for singlet oxygen generation under aerobic conditions.
AB - Organoplatinum(II) complexes of calix[4]phyrin analogues, singly N-confused calix[4]phyrin (Pt-2), and doubly N-confused calix[4]phyrin (Pt-3), were synthesized and characterized. The explicit structures of these organoplatinum(II) complexes were elucidated by single-crystal X-ray diffraction and spectroscopic studies. The introduction of N-confused pyrrole rings to the parent calix[4]phyrin scaffold was found to have profound effects on the photophysical properties, such as the bathochromic shifts of both the absorption and phosphorescence maxima. The triplet excited state properties of these platinum complexes were analyzed by DFT calculations at the B3LYP level. The organoplatinum(II) complexes derived from the deformed scaffolds can serve as potent triplet sensitizers for singlet oxygen generation under aerobic conditions.
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U2 - 10.1021/acs.inorgchem.7b02047
DO - 10.1021/acs.inorgchem.7b02047
M3 - Article
AN - SCOPUS:85031733811
SN - 0020-1669
VL - 56
SP - 12572
EP - 12580
JO - Inorganic chemistry
JF - Inorganic chemistry
IS - 20
ER -