Ultrafast energy transfer and structural dynamics in DNA
Article Abstract:
Ultrafast structural dynamics concomitant to excitation energy transfer in DNA is studied using a pair of pyrene-labeled DNA bases. The temporal evolution of the femtosecond pump-probe spectra reveals the existence of two electronic coupling pathways, through-base stack and through-space, which lead to excitation energy transfer and excimer formation, the local structural dynamics and flexibility and flexibility of DNA are characterized on the picosecond and nanosecond time scale.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
Fluorescence resonance energy transfer in CdSe/ZnS-DNA conjugates: Probing hybridization and DNA cleavage
Article Abstract:
The nucleic-acid-functionalized CdSe/ZnS quantum dots (QDs) hybridized were monitored, following the transfer of fluorescence resonance energy from the QDs to the dye units. The treatment of the Qd/dye DNA with DNase I resulted in the cleavage of the DNA and the recovery of the fluorescence properties of the CdSe/ZnS QDs.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
Natural DNA mixed with trehalose persists in B-form double stranding even in the dry state
Article Abstract:
The desiccated calf-thymus DNA persists in B-form double-stranding when mixed with trehalose. The strong hydrogen bonding capacity of trehalose with phosphate groups of DNA causes screening of the large phosphate-phosphate repulsion and stabilizes the DNA.
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: Ultrafast-pump probe study of excited-state charge-transfer dynamics in umecyanin from horseradish root. Water channel of horseradish peroxidase studied by the charge-transfer absorption band of ferric heme
- Abstracts: On the structure and desorption dynamic of DNA bases adsorbed on gold: A temperature-programmed study. AFM study of water meniscus formation between an AFM tip and NaCl substrate
- Abstracts: Large-scale synthesis and microstructure of SnO(sub 2) nanowires coated with quantum-sized ZnO nanocrystals on a mesh substrate
- Abstracts: Extracting the time scales of conformational dynamics from single-molecule single-photon fluorescence statistics
- Abstracts: Interactions between colloidal particles induced by polymer brushes grafted onto the substrate. part 2 Quantum yield of formaldehyde formation in the presence of colloidal TiO(sub 2)-based photocatalysts: Effects of intermittent illumination, platinization, and deoxygenation