Deep-cavity subporphyrazines with extended π-perimeters
2016 ◽
Vol 20
(08n11)
◽
pp. 1277-1283
◽
Keyword(s):
Unprecedentedly large subporphyrazines (SubPz) with dibenzoquinoxalino-fusion and peripheral phenyl substitution were prepared by the cyclization of perfluorated or non-fluorous polyphenyl-substituted quinoxaline dinitriles and characterized by spectroscopic techniques. The compounds suitability to act as photosensitizers was explored by wavelength-specific induction of singlet oxygen luminescence and was shown to be excellent. Determination of 1O2-quantum yields suggests that fluorine substitution enhances the photosensitization efficiencies of the SubPz. On the other hand, cyclic voltammetry reveals an increase of irreversible reductive processes in case of the fluorinated SubPz.
Keyword(s):
2005 ◽
Vol 53
(1)
◽
pp. 85-92
◽
Keyword(s):
Keyword(s):
1973 ◽
Vol 22
(1)
◽
pp. 91-98
◽
Keyword(s):
2014 ◽
Vol 32
(No. 6)
◽
pp. 570-577
◽
Keyword(s):
Keyword(s):
2014 ◽
Vol 1041
◽
pp. 210-213
1994 ◽
Vol 79
(1-2)
◽
pp. 11-17
◽
Keyword(s):