TY - JOUR
T1 - The redox chemistry of copper tetraphenylporphyrin revisited
AU - Saphier, Magal
AU - Yifrah, Tova
AU - Zilbermann, Israel
AU - Saphier, Oshra
AU - Shames, Alexander I.
AU - Froumin, Natalya
AU - Meyerstein, Dan
AU - Guldi, Dirk M.
PY - 2012/1/1
Y1 - 2012/1/1
N2 - Mixing Cu(II)Cl2 with free base tetraphenylporphyrin ((H 2(TPP)) in dry deaerated 1,2-dichloroethane surprisingly yields a mixture of Cu(II)(TPP) and Cu(III)(TPP). The later is long-lived in the absence of water and slowly decomposes within days to yield Cu(II)(TPP). Furthermore, in the presence of air, a slightly different CuIII porphyrin species forms, presumably, Cu(III)(TPP)•+, in which the Q-band is subject to a 10 nm red shift. The new Cu(III)(TPP) and Cu(III)(TPP) •+ differ in terms of absorption, fluorescence, electron paramagnetic resonance (EPR), and X-ray photoemission spectroscopy (XPS) when compared to the well-characterized Cu(II)(TPP), Cu(II)(TPP)•+, and Cu(II)(TPP)2+ species.
AB - Mixing Cu(II)Cl2 with free base tetraphenylporphyrin ((H 2(TPP)) in dry deaerated 1,2-dichloroethane surprisingly yields a mixture of Cu(II)(TPP) and Cu(III)(TPP). The later is long-lived in the absence of water and slowly decomposes within days to yield Cu(II)(TPP). Furthermore, in the presence of air, a slightly different CuIII porphyrin species forms, presumably, Cu(III)(TPP)•+, in which the Q-band is subject to a 10 nm red shift. The new Cu(III)(TPP) and Cu(III)(TPP) •+ differ in terms of absorption, fluorescence, electron paramagnetic resonance (EPR), and X-ray photoemission spectroscopy (XPS) when compared to the well-characterized Cu(II)(TPP), Cu(II)(TPP)•+, and Cu(II)(TPP)2+ species.
KW - copper
KW - redox
KW - spectroscopy
KW - tetraphenylporphyrin
UR - http://www.scopus.com/inward/record.url?scp=84867628894&partnerID=8YFLogxK
U2 - 10.1142/S108842461250112X
DO - 10.1142/S108842461250112X
M3 - Article
AN - SCOPUS:84867628894
SN - 1088-4246
VL - 16
SP - 1124
EP - 1131
JO - Journal of Porphyrins and Phthalocyanines
JF - Journal of Porphyrins and Phthalocyanines
IS - 10
ER -