inorganic chemistry

Keywords:Bacteriochlorin; Photodynamic therapy; Reactive oxygen species; Photodecomposition. I. Introduction Porphyrins and thei ...

the simplest porphyrin, and the common generic names of the positions of the pyrrole rings. These macrocycles have important abs ...

understanding of electronic states and electronic transitions in porphyrins and metalloporphyrins, and of the lifetimes and yiel ...

au!b2gand b1u!b3goptical transitions have nearly the same energy as the allowed b1u!b2gand au!b3gtransitions, the elec- tron ...

Qx( 8 ). Replacement of the two central hydrogens by a metal ion of appropriate size leads to theD4hgeometry and to degeneracy t ...

This diminishes the HOMO–LUMO gap from the porphyrin, to the chlorin and to the bacteriochlorin, explaining the bathochromic shi ...

The tetrapyrrole ring acts as a tetradentate dianionic ligand and can form complexes with a wide range of transition metal ions. ...

diagrams for several metal porphyrins ( 22 ). The 3d orbitals of ZnTPP are particularly low in energy, and the HOMO is a por- ph ...

the 2eg(p) and not to the b1g(dx (^2) – y 2 ), which would give a d^10 con- figuration. NiTPP is diamagnetic (closed shell) and ...

isoelectronicwithFeII(TPP)andcanalsobindaxialligands.FeII-por- phyrin systems have been much investigated because of the biologi ...

to chlorins( 30 ). Lowering the energy of the HOMOs strongly dis- favors oxidative destruction of the macrocycle and should con- ...

F IG . 5. Absorption spectra of: (a) H TPP (full line) and H 2 TF 2 PP (dashed line); (b) H 2 TCl 2 PPethyl (full line) and 2 H ...

The introduction of trifluoromethyl (H 2 TCF 3 P) or phenyl groups (H 2 TPP) in the fourmeso-positions of porphin leads to rel- ...

thus raising their energy. Hyper-type spectra exhibit additional bands coming either from charge transfer (CT) from the metal p ...

occurs in femtoseconds. However, PdIITPP, which is also diamag- netic and d^8 , does not show fluorescence but is strongly phosp ...

atom ( 47 ). The rapid oxidation of MnIIto MnIIImakes this pro- cess reversible. Laser photolysis of ClFeIIITPP at 355 nm in deg ...

where cj represents the full set of eigenfunctions with the associated eigenvaluesEj of the unperturbed system Hamilto- nianH 0 ...

Vfie¼ ð ffVfidte (8) and the second factor is the overlap integral between the vibra- tional wavefunctions of the initial (v) a ...

Franck–Condon factor with an exponential factor with the form of the WKB approximation for tunneling through intersecting parabo ...

Nonadiabatic factors w<<1 are expected for intersystems crossings between singlet and triplet states, which are formally s ...