The origin of the RNA world: a kinetic model
Article Abstract:
Microscopic kinetic models were developed and studied for the evolution of long chains of RNA from monomeric beta-D-ribonucleotide precursors in prebiotic situations. The models include the possibility of direct chain growth, template-assisted synthesis and catalysis by RNA replicase ribozymes. However, the reaction mechanisms are kept open and the presence of closed hypercycles, which sustain a population of long chains, is not assumed.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
User Contributions:
Comment about this article or add new information about this topic:
Enhancement of two-photon absorption cross-section in macrocyclic thiophenes with cavities in the nanometer regime
Article Abstract:
The linear and nonlinear optical properties of two thiophene-based cyclic molecules are examined. Measurements of the different size ring structures revealed a 550% increase in the two-photon absorption (TPA) cross-section for the larger macrocycle, while the electronic structure calculations suggest an increase in coupling of the excited states in these systems as the ring size is increased.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2007
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Evaluation of the charge-collection efficiency of dye-sensitized nanocrystalline TiO2 solar cells. Photochemistry of NO chemisorbed on TiO2(110) and TiO2 powders
- Abstracts: Electron source in photoinduced hydrogen production on Pt-supported TiO2 particles. Photoinduced release of nitroxyl and nitric oxide from diazeniumdiolates
- Abstracts: Photocarrier generation in smectic phenylnaphthalene liquid crystalline photoconductor. Crystal structures and photocarrier generation of thioindigo derivatives
- Abstracts: Study of carrier generation in titanyl phthalocyanine (TiOPc) by electric-field-induced quenching of integrated and time-resolved fluorescence
- Abstracts: Study on the correlation and prediction of octanol/water partition coefficients by quantum chemical calculations