Electron donors intramolecular charge transfer

The mn ionizations of tertiary aliphatic amines (Table 5) are mostly lower than 9 eV and thus small enough for an electron donor in charge-transfer (CT) interactions. Mutai and collaborators64 have studied intramolecular CT interaction in a series of 1 -( >-dimethylaminoalkyl)-4-nitrobenzenes. 

It is possible to evaluate the strength of several acceptor parts (including some nitroaro-matic derivatives) in intramolecular charge transfer complexes in substrates such as 54 and 55 which also contain electron-donor fragments (X = PhNH—, PhO—, Ph—) from the oxidation potential of the complex and of the donor species161. 

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). 

From a chemical point of view, however, it is reasonable that the measured dipole moment increases with solvent polarity, simply because in these conjugated systems the intramolecular charge transfer from the electron donor to the electron acceptor is... 

It is also revealed that the intramolecular charge transfer derived from substituted donor and acceptor contributes to the increase in the third-order optical nonlinearity of dye-attached polymer systems. values larger than 10 10 esu can be achieved even in relatively short Tt-electron conjugated dye-attached polymers. 

The body of evidence summarized within the aforementioned reviews clearly indicates that simple 1,2-dioxetanes decompose thermally through a twisted diradical-like transition state to afford predominantly a triplet-excited carbonyl with no direct emission of light (Scheme 1), while dioxetanes bearing an aromatic electron-donor moiety display intramolecular charge-transfer-induced decomposition with accompanying effective emission of light (Scheme 2). 

NON-ADIABATIC PHOTOPROCESSES OF FUNDAMENTAL IMPORTANCE TO CHEMISTRY FROM ELECTRONIC RELAXATION OF DNA BASES TO INTRAMOLECULAR CHARGE TRANSFER IN ELECTRON DONOR-ACCEPTOR MOLECULES... 

---