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Titolo:
Coadsorption of the complementary base pair adenine-thymine at the mercury/electrolyte interface
Autore:
Kirste, S; Donner, C;
Indirizzi:
Free Univ Berlin, Inst Chem Phys & Theoret Chem, D-14195 Berlin, Germany Free Univ Berlin Berlin Germany D-14195 et Chem, D-14195 Berlin, Germany
Titolo Testata:
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
fascicolo: 19, volume: 3, anno: 2001,
pagine: 4384 - 4389
SICI:
1463-9076(2001)3:19<4384:COTCBP>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
SELF-ASSEMBLED MONOLAYERS; SINGLE-CRYSTAL ELECTRODES; ADSORPTION; ADLAYERS; TRANSITIONS; STABILITY; AU(111); FILMS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Donner, C Free Univ Berlin, Inst Chem Phys & Theoret Chem, Takustr 3, D-14195 Berlin, Germany Free Univ Berlin Takustr 3 Berlin Germany D-14195 rlin, Germany
Citazione:
S. Kirste e C. Donner, "Coadsorption of the complementary base pair adenine-thymine at the mercury/electrolyte interface", PHYS CHEM P, 3(19), 2001, pp. 4384-4389

Abstract

The condensation behaviour of adenine was investigated with respect to a possible reorientation during the phase transition. It was found that, in contrast to thymine, randomly adsorbed adenine yields a negative dipole contribution with regard to the displaced water molecules. During the condensation reorientation takes place in such a way that this negative dipole contribution is reinforced. Coadsorption of the complementary DNA bases adenine and thymine leads to destabilisation of both the condensed and the randomly adsorbed layers. In place of the attractive lateral forces between adenine or thymine in a pure condensed monolayer, another kind of interaction occurs between adenine and thymine in a mixed adsorbate. Hence, the phase transition disappears when a critical ratio of adenine to thymine is reached.

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Documento generato il 07/04/20 alle ore 03:27:33