Photoinduced intramolecular charge transfer in push-pull polyenes: effects of solvation, electron-donor group, and polyenic chain length

Article Abstract:

Subpicosecond absorption spectroscopy is used for characterizing primary photoinduced processes in a class of push-pull polyenes bearing a julolidine end group as the electron donor and a diethylthiobarbituric acid end group as the electron acceptor. The results have shown that photoinduced reaction trajectories in push-pull polyenes are controlled by the static and dynamic properties of the solvent, the chemical nature and size of the end groups and the conjugated-chain length and flexibility.

Charge transfer, Atomic absorption spectroscopy

---

Target analysis of primary photoprocesses involved in the oxyblepharismin-binding protein

Article Abstract:

Target analysis is used and performed on the transient absorption spectra of the oxyblepharismin-binding protein (OBIP), which is supposed to trigger the photophobic response of other protozoans. The results show that OBIP does not generate any photoproduct or protein change of conformation, but has the abilities to act like a solar screen.

Analysis, Spectra, Absorption spectra, Protozoa, Protozoans, Binding proteins

---

Change in electronic structure of polyenes due to interaction with polyacenes and with graphitic strips

Article Abstract:

The change in polyene bond lengths with distance from the polyacene and the modification of the HOMO-LUMO energy gap brought about by chemisorption of the polyene on some polyacenes is presented. The conclusion states that the dispersion interactions would play a role in the interaction between planar conjugated systems.

Electron configuration, Structure, Hartree-Fock approximation

Similar abstracts:

• Abstracts: Intramolecular electron transfer within a covalent, fixed-distance donor-acceptor molecule in an ionic liquid
• Abstracts: Controlling the adiabacity of electron-transfer reactions using nematic liquid-crystal solvents. Unusually high fluorescence enhancement of some 1,8-Naphthalimide derivatives induced by transition metal salts
• Abstracts: Primary radical pair [P.sup.+][H.sup.-] lifetime in Rhodobacter sphaeroides with blocked electron transfer to [Q.sub.A]. Effect of o-phenanthroline
• Abstracts: Study on nonlinear spectroscopy of tetraphenylporphyrin and dithiaporphyrin diacids. Fast excition migration in phorphyrin-functionalized polypeptides
• Abstracts: EPR and solid-state NMR studies of poly(dicarbon monofluoride) {[C.sub.2]F}[.sub.n]. Rotation and diffusion of [H.sub.2] in hydrogen-ice clathrate by [super 1]H NMR

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