Linkage length dependence of intramolecular photoinduced electron transfer reactions in aromatic donor-viologen acceptor molecules linked by polymethylene bridges

Article Abstract:

Research was conducted to examine the intramolecular charge transfer (CD) complex formation and photoinduced electron-transfer reactions in aromatic donor-viologen acceptor dyad systems linked by polymethylene linkage. The effects of Me-beta-CD on steady-state fluorescence intensity and excited-state lifetime were compared. Results suggest that through-space/through-solvent electron transfer is the predominant quenching pathway in the molecules with the linkage shorter than heptamethylene chain.

Electron donor-acceptor complexes

---

Direct measurement of the triplet quantum yield of poly(3-dodecylthiophene) in solution

Article Abstract:

The fluorescence quantum efficiency and the internal conversion quantum yield of 0.59 plusmn 0.02, and the intersystem crossing quantum yield of 0.11 plusmn 0.01 are presented. The fluorescence lifetime of ca. 490 ps is measured to estimate the relative lifetime of 1.64 ns for the singlet excitons and nonradiative decay rate constants, for the internal conversion and intersystem crossing.

Analysis, Fluorescence microscopy, Quantum chemistry, Chemical properties

---

Temperature dependence of photoinduced electron transfer within self-assembled uroporphyrin-cytochrome c complexes

Article Abstract:

An investigation of the temperature dependence of photoinduced electron transfer between both singlet- and triplet-state uroporphyrin and the heme group of ferricytochrome c (Cc) is presented. It appears that uroporphyrin binding to Cc gives a distribution of orientations/conformations.

Similar abstracts:

• Abstracts: Photoinduced intramolecular charge transfer in donor-acceptor substituted tetrahydropyrenes. Highly efficient spectral hole-burning in oxygen-evolving photosystem II preparations
• Abstracts: Progress in understanding electron-transfer reactions at semiconductor/liquid interfaces
• Abstracts: Raman dispersion and intermolecular interactions in unsubstituted thiophene oligomers. Pi-Stacking in charged thiophene oligomers
• Abstracts: Photostimulated generation of defects and surface reactions on a series of wide band gap metal-oxide solids. Pyrene micropartitioning and slubilization by sodium dodecyl sulfate complexes with poly(ethylene glycol)
• Abstracts: Phase transitions of liquid crystal PAA in confined geometries. Decanol effect on the structure of the hexagonal phase in a lyotropic liquid crystal

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.