Determination of the electrostatic potential difference between DNA and the solution containing it: A kinetic approach

Carrasco, Mario; Coca, Raquel; Cruz, Isabel Cf da; Daza, Silvia; Espina, Manuela; García‐Fernández, Emilio; Guerra, Francisco J.; Leon, R. Levi Di; Marchena, M.; Pérez, Inmaculada; Puente, Manuel; Suárez, Esteban; Valencia, Inmaculada; Villalba, Inmaculada; González-Jiménez, R.

doi:10.1016/j.cplett.2007.04.090

Cited by 10 publications

(11 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, having a quencher bearing -2 charge (for example, S 2 O 8 2frequently used as quencher) [6] and a receptor being an anionic micelle or DNA, Φ can be obtained from the electrostatic potential difference, ψ, between the receptor and the solution. Ψ depends on the ionic strength of the medium and ranges from -50 to -100 mV [7]. If we use the Boltzman Distribution Law, Φ can be easily calculated.…”

Section: Effects Of Heterogeneous Quencher Distributionmentioning

confidence: 99%

A New Formulation for Quenching Processes under Restricted Geometry Conditions in the Slow Exchange Limit

Sánchez

Barrios

López‐López

et al. 2014

Progress in Reaction Kinetics and Mechanism

View full text Add to dashboard Cite

A quantitative treatment of quenching processes under restricted geometry conditions in the Slow Exchange Limit is presented. The expressions for K SV have been obtained for this limit in some common situations that can arise in studies under restricted geometry conditions, such as an inhomogeneous quencher distribution in the solution, the presence of oxygen in solution, or the case of solutions containing a mixture of receptors. These situations have been considered and incorporated into the treatment.

show abstract

Section: Effects Of Heterogeneous Quencher Distributionmentioning

confidence: 99%

A New Formulation for Quenching Processes under Restricted Geometry Conditions in the Slow Exchange Limit

Sánchez

Barrios

López‐López

et al. 2014

Progress in Reaction Kinetics and Mechanism

View full text Add to dashboard Cite

show abstract

“…This effect would push the ions towards the aqueous phase, but more so to the ion with the higher charge. In other words, the ions will feel different potentials according to their different charges [ 22 ].…”

Section: Microheterogeneous Catalysis With Participation Of Groundmentioning

confidence: 99%

“…In this way, we have determined the electrostatic and non-electrostatic component of the free energy of binding of [Ru(NH 3 ) 5 Pz] 2+ to gold nanoparticles [ 60 ] and DNA [ 22 , 61 ]. The effects of the changes in the composition of the interface have also been focused from other points of view.…”

Section: Microheterogeneous Catalysis With Participation Of Groundmentioning

confidence: 99%

“…log[ Nα + ] and, once the non-electrostatic part of the binding is established, the electrostatic part can be determined (see Equation 78). In turn, one can write: in such a way that one can determine the value of the difference in the electrostatic potential between the solution and the region close to DNA where the ligand binds to it [ 22 ]. Following this approach, the values of ∆Ψ have been estimated using as probes [Ru(NH 3 ) 5 Pz] 2+ and [Co(NH 3 ) 5 Pz] 3+ .…”

Section: Microheterogeneous Catalysis With Participation Of Groundmentioning

confidence: 99%

“…However electrostatic interactions can be reduced by doping the interface with non-ionic surfactants [ 20 ]. Another way of modulating the balance of electrostatic and other kinds of interactions is to add electrolytes to the systems [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microheterogeneous Catalysis

2010

View full text Add to dashboard Cite

The catalytic effect of micelles, polymers (such as DNA, polypeptides) and nanoparticles, saturable receptors (cyclodextrins and calixarenes) and more complex systems (mixing some of the above mentioned catalysts) have been reviewed. In these microheterogeneous systems the observed changes in the rate constants have been rationalized using the Pseudophase Model. This model produces equations that can be derived from the Brönsted equation, which is the basis for a more general formulation of catalytic effects, including electrocatalysis. When, in the catalyzed reaction one of the reactants is in the excited state, the applicability (at least formally) of the Pseudophase Model occurs only in two limiting situations: the lifetime of the fluorophore and the distributions of the quencher and the probe are the main properties that define the different situations.

show abstract

A General Formulation Encompassing the Effects of Salts and Micelles (Direct and Reverse) on Ionic Reactions

Marchena

Sánchez

2011

J Solution Chem

View full text Add to dashboard Cite

Determination of the electrostatic potential difference between DNA and the solution containing it: A kinetic approach

Cited by 10 publications

References 14 publications

A New Formulation for Quenching Processes under Restricted Geometry Conditions in the Slow Exchange Limit

A New Formulation for Quenching Processes under Restricted Geometry Conditions in the Slow Exchange Limit

Microheterogeneous Catalysis

A General Formulation Encompassing the Effects of Salts and Micelles (Direct and Reverse) on Ionic Reactions

Contact Info

Product

Resources

About