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Ultrafast Deactivation Processes in Aminopyridine Clusters: Excitation energy dependence and isotope effects

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F06%3A00048055" target="_blank" >RIV/61388963:_____/06:00048055 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Ultrafast Deactivation Processes in Aminopyridine Clusters: Excitation energy dependence and isotope effects

  • Original language description

    Fast excited-state relaxation in H-bonded aminopyridine clusters occurs via hydrogen transfer in the excited state. We used femtosecond pump-probe spectroscopy to characterize the excited-statereaction coordinate. Considerable isotope effects for partially deuterated clusters indicate that H-transferis the rate-limiting step and validate ab initio calculations in the literature. An aminopyridine dimer serves as a model for Watson-Crick base pairs, where similar reactions havebeen predicted by theory.

  • Czech name

    Ultrarychlé deaktivační procesy v klastru molekul aminopyridinu: excitační energie a isotopové efekty

  • Czech description

    Relaxace z excitovaného stavu ve vodíkově vázaných klastrech aminopyridinu je založena na mechanismu přenosu protonu. Pro studium reakční koordináty byla použita femtosekundová spektropie. Zkoumaním izotopových effektů se ukázalo že přenos protonu je limitujícm faktorem rychlosti deaktivace. Tento klastr slouží jako model pro studium párů nukleových kyselin, kde lze očekávat podobné mechanismy přenosu protonu v excitovaném stavu.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CF - Physical chemistry and theoretical chemistry

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/LC512" target="_blank" >LC512: Center for biomolecules and complex molecular systems</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2006

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of the American Chemical Society

  • ISSN

    0002-7863

  • e-ISSN

  • Volume of the periodical

    128

  • Issue of the periodical within the volume

    49

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    5

  • Pages from-to

    15652-15656

  • UT code for WoS article

  • EID of the result in the Scopus database