Strong nonmonotonous temperature dependence of exciton migration rate in J aggregates at temperatures from 5 to 300 K

Article Abstract:

The first measurement of the rate of excition-excition anihilation in J aggregates for which strong nonmonotonous temperature dependence is found is presented. The conclusion states that an excition hopping process occurs at low temperature, a coherent wave-packet-like excition transport occurs in the intermediate temperature region and a strong excition scattering occurs on optical phonons at high temperature.

Thermal properties, Exciton theory, Excitons, Phonons

---

High-field EPR study of carotenoid and the angular orientation of chlorophyll in photosystem II

Article Abstract:

The carotenoid and chlorophyll cation radicals in hydroxylamine treated PSII membranes from spinach are studied by 285 GHz high-field EPR spectroscopy. By using the inherent high resolution of high-field EPR in combination with 1D-oriented samples and knowledge of the g-tensor orientation, it is possible to determine directly the orientation of a radical with respect to the axis of orientation.

Electric properties, Carotenoids, Radicals (Chemistry), Chlorophyll, Electron paramagnetic resonance

---

High-speed imaging of sustained metabolic target patterns in living neutrophils during adherence

Article Abstract:

A study is conducted to investigate the [propagation of circular NAD(P)H autofluorescence and proton waves in individual living human neutrophils using high-speed fluorescence microscopy. the results reveal that physical-chemical self-organization of metabolism is a fundamental aspect of cell function.

Fluorescence, Neutrophils, Optical properties

Similar abstracts:

• Abstracts: Temperature dependence of nuclear magnetic resonance chemical shifts of 129Xe in the alpha-cages of NaY zeolite
• Abstracts: Distance dependence of the electron transfer rate through olygoglycine spacers introduced into self-assembled monolayers
• Abstracts: Electron spin resonance study of the temperature dependence of electron transfer in DNA: Competitive processes of tunneling, protonation at carbon, and hopping
• Abstracts: Improvements in the efficiency of the oxidation of formic acid obtained by increasing the overall anion adsorption strength
• 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

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