Analysis of the interactions responsible for long-range through-bond-mediated electronic coupling between remote chromophores attached to rigid polynorbornyl bridges

Article Abstract:

The distance and strength of an electronic interaction determined the extent of through-bond (TB) couplings. The McConnell model was preferred over both the photoelectron spectroscopy and electron transmission spectroscopy in determining bridge-length effects on anionic and cationic splittings. However, the application of natural bond orbitals (NBO) in polynorbornyl TB coupling showed that the splitting pathway followed a nonexponential distance dependence, whichresulted in more accurate analyses. In addition, NBOs were used in nonperturbative and ab initio calculations regarding TB coupling.

Semiconductors, Photoelectron spectroscopy

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Photoinduced electron transfer in supramolecular systems for artificial photosynthesis

Article Abstract:

Porphyrin-containing supramolecular systems are being developed to perform photoinduced charge separation reactions that imitate plant transformation of solar to chemical energy. Improvements in the electron-transfer (ET) process involve structural control of temperatures and donor-acceptor distances. Moreover, interacting solvent properties and electronic coupling strength influence the rate and energetics of ET processes.

Photosynthesis research, Porphyrins

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Noncovalent binding between guanidinium and anionic groups: Focus on biological-and synthetic-based arginine/guanidinium interactions with phosph[on]ate and sulf[on]ate residues

Article Abstract:

Review of work pertaining to noncovalent binding interactions involving primarily the cationic guanidinium group and the anionic sulfonate and phosphonate groups is presented. Noncovalent binding interactions are used in spectroscopic, biomimetic, molecular interaction modeling, and bioinformatics tools among others, that are greatly varied and used in a wide variety of fields.

Science & research, All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Guanidine, Anions, Chemical properties, Guanidines

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