Dyads and triads containing perylenetetracarboxylic diimide and porphyrin: Efficient photoinduced electron transfer elicited via both excited singlet

Article Abstract:

The synthesis, characterization and photophysical properties of new photoactive dyads and triads of porphyrin-PIm systems that would be applied to improve the light absorption efficiency and achieve the efficient charge-separation states for appropriately long times is reported. The steady state, time-resolved emission and transient absorption results revealed the occurrence of electron transfer mainly from the porphyrin to perylene entities in the polar solvent.

Chemical properties, Absorption of light, Light absorption

---

Design, syntheses, and studies of supramolecular porphyrin-fullerene conjugates, using bis-18-crown-6 appended porphyrins and pyridine or alkyl ammonium functionalized fullerenes

Article Abstract:

Photoinduced electron-transfer processes in cis and trans functionalized bis-18-crown-6 porphyrin self-assembled with fullerene functionalized with pyridine or alkylammonium cation entities are reported. The conjugates revealed stable 'two-point' binding involving metal-ligand coordination and alkylammonium cation-crown ether binding or only the later type of binding depending upon the functionality of the fullerence and metal ion in the porphyrin cavity.

Atomic properties, Alkyl groups

---

Photoinduced electron transfer from oligothiophenes/polythiophene to fullerenes (C60/C70) in solution: comprehensive study by nanosecond laser flash photolysis method

Article Abstract:

A comprehensive laser flash photolysis study on photoinduced electron transfers both via excited fullerenes and excited ligothiphene/polythiphene in solution by selective excitation using laser light at various wavelengths is conducted. Smaller electron-transfer yields of longer oligomers indicate the contribution of other deactivation processes such as energy transfers.

Electric properties, Photolysis

Similar abstracts:

• Abstracts: Driving force dependence of photoinduced electron transfer dynamics of intercalated molecules in DNA. Distance dependence of electron transfer in DNA: the role of the reorganization energy and free energy
• Abstracts: Driving force for electron transport in porous nanostructured photoelectrodes. Charge carrier dynamics in illuminated, particulate ZnO electrodes
• Abstracts: Structure and thermodynamics of asymmetric electrolytes adsorbed in disordered electroneutral charged matrices from replica Ornstein-Zernike equations
• Abstracts: Coupled interactions among solute diffusions, membrane surface potentials, and opposing enzyme reactions as a mechanism for active transports performed with biomimetic membranes
• Abstracts: Hole traps in DNA calculated with exponential electron-lattice coupling. Negative ion mass spectra, electron affinities, gas phase acidities, bond dissociation energies, and negative ion states of cytosine and thymine

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