Photochemistry charge transfer

Vogler, A., Kunkeley, H. Photochemistry of Transition Metal Complexes Induced by Outer-Sphere Charge Transfer Excitation. 158, 1-30 (1990). 

Hotchandani S, Kamat P (1992) Charge-transfer processes in coupled semiconductor systems. Photochemistry and photoelectrochemistry of the colloidal cadmium sulfide-zinc oxide system. J Phys Chem 96 6834—6839... 

Boratastilbene has recently been synthesized and structurally characterized.26 A study of the consequence of the isoelectronic B for C substitution on the pho-tophysics/photochemistry led to the conclusion that, due to intramolecular charge transfer arising from the inequivalent charge density of the two aromatic rings, nonaggregated boratastilbene is highly emissive relative to stilbene. 

Wrighton and coworkers101. The basic photochemistry is thought to involve the formation of an excited state charge transfer complex [R3E+-Re(CO)3L-]. This in turn cleaves to form R3E- and [Re(CO)3L]-. In the presence of suitable quenching agents, the excited state can be quenched. 

Vasenkov, S. and Frei, H. (1997). UV-visible absorption spectroscopy and photochemistry of an alkene-02 contact charge-transfer system in large NaY crystals. J. Phys. Chem. B 101, 4539 1543... 

The charge-transfer salts of carbonylmetallates are thus distinguished from the iodide salts in the breadth of photochemistry that obtains upon exposure to visible light. For example, the continuous irradiation of the... 

The SET between amine and acceptor may be enhanced by photoexcitation and may lead to the formation of exciplexes2 or molecular complex with charge transfer character3. The photochemistry between aromatic acceptors and amines via the exciplexes has been discussed earlier (Scheme l)4. 

J. L. Habib Jiwan and J. P. Soumillion, Electron transfer photochemistry initiated from a twisted intramolecular charge transfer state used as an electron donor and as an acceptor, J. Photochem. Photobiol. A Chem. 64, 145-158 (1992) J. P. Soumillion, Photoinduced electron transfer implying organic anions, in Topics in Current Chemistry, Vol., Photoinduced Electron Transfer (J. Mattay, ed.), Springer Verlag, Berlin, pp. 93-141 (1993). 

W. Rettig and W. Baumann, Luminescent and nonluminescent twisted intramolecular charge transfer (TICT) states Dipole moments and applications, in Photochemistry and Photophysics, Vol. 6 (J. F. Rabek, ed.), pp. 79-134, CRC Press, Boca Raton, Florida (1992). 

The photochemistry of imides, especially of the N-substituted phthalimides, has been studied intensively by several research groups during the last two decades [233-235]. It has been shown that the determining step in inter- and intramolecular photoreactions of phthalimides with various electron donors is the electron transfer process. In terms of a rapid proton transfer from the intermediate radical cation to the phthalimide moieties the photocyclization can also be rationalized via a charge transfer complex in the excited state. 

Platinum(ni).—Unlike the photochemistry of [PtXg] " (X = Br or I) in which only photoaquation is observed,flash photolysis of [PtClsV" in its Cl Pt charge-transfer band has been shown to result also in photoreduction. The unusual Pt" complex [PtC ]" is produced via the mechanism... 

It has been suggested that P BChl (where BChl is one of the two monomeric or "accessory BChls that are not part of P) is a transient state prior to P "I (14,16,19), although the evidence supporting this view has been criticized (23, 24) Recent subpicosecond studies find no evidence for P "BChl (8,9) These new results do not preclude some involvement of a monomeric BChl in the early photochemistry, only that P BChl apparently is not a kinetically resolved transient state Perhaps P itself contains some charge-transfer character between its component BChls, or between P and one or both of the monomeric BChls (8,9,25-27) One of the two monomeric BChls apparently can be removed by treatment of the reaction center with sodium borohydride (28) and subsequent chromatography, with no impairment of the primary electron transfer reactions (29) Thus, at present it appears that P I is the first resolved radical-pair state, and it forms with a time constant of about 4 ps in Rps sphaeroides ... 

Sherman, D.M. (1985) Electronic structures of Ee " coordination sites in iron oxides application to spectra, bonding and magnetism. Phys. Chem. Min. 12 161-175 Sherman, D.M. (1987). Molecular orbital (SCF-Xa-SW) theory of metal-metal charge transfer processes in minerals I. Application to the Fe vpe charge transfer and electron delocalization in mixed-valenced iron oxides and si-licates.Phys Chem Min 70 1262-1269 Sherman, D.M. (1990) Crystal chemistry, electronic structure and spectra of Fe sites in clay minerals. Applications to photochemistry and electron transport. In Coyne, L.M. McKeever, S.W.S. Blake, D.F. (eds.) Spectroscopic characterization of minerals and their surfaces. A.C.S. Symposium Series 415, 284-309... 

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