velazquezMercedes

Dr. M Mercedes Velázquez is full professor at the University of Salamanca since October 2011. She obtained her Ph. D in Chemistry by the University of Salamanca and continued her postdoctoral studies in Molecular Photochemistry with Prof. S.M.B. Costa in Lisbon (Molecular photochemistry group of the Centre for structural Chemistry) with a Post-Doc Fellow Human Capital and Mobility program of MEC (September 1989-september 1990) and a fellowship of Portuguese govern for European scientist (February 1987-July 1987). She was Associate professor, area Chemical Physics at the University of Salamanca from 1991 to 2011, Invited professor at the Universidad Complutense de Madrid, from February to July of 2002 and Teaching Assistant from October1978 to 1990.Dr.Velázquez was leader in several projects by Ministerio de Educación y Ciencia and Ciencia e Innovación in the field of the Colloid and interface chemistry concerning the stability, structure and properties of 3D and 2D self-assemblies of surfactant and polymers. Currently, she is researching in nanoparticle films for advanced technological applications. In particular she is working in the synthesis of chemical graphene to prepare controlled films of this material by the Langmuir-Blodgett methodology to fabricate hybrid structures for advanced electronic applications. She participates in innovation projects with Grupo Antolín Ingenieria in preparation of graphene oxide from GANF® nanofibers (GRAnPHTEC, IDI-20111312CDTI)  and the preparation of graphene-silver hybrids for construction of devices for the car industry (INNPACTO DINNAMIC: IPT-2012-0429-420000)

PUBLICATIONS
Graphene Oxide Thin Films: Influence of Chemical Structure and Deposition Methodology
Hidalgo, R. S.; Lopez-Diaz, D.; Mercedes Velazquez.
Langmuir 2015, 31, 2697-2705 (2015)''

The Importance of Interbands on the Interpretation of the Raman Spectrum of Graphene Oxide
Sergi Claramunt, Aïda Varea, David López-Díaz, M. Mercedes Velázquez, Albert Cornet, and Albert Cirera
The Journal of Physical Chemistry C, 2015, 119, 10123 (2015)''

Adsorption of Quantum Dots onto Polymer and Gemini Surfactant Films: A Quartz Crystal Microbalance Study.
Alejo, T.; Merchan, M. D.; Velazquez, M. M.
Langmuir 2014, 30, 9977-9984 (2014)''

Nanoparticle Self-Assembly Assisted by Polymers: The Role of Shear Stress in the Nanoparticle Arrangement of Langmuir and Langmuir-Blodgett Films
Martin-Garcia, Beatriz; Mercedes Velazquez, M.
Langmuir 2014, 30, 509-516 (2014)''

Block copolymer assisted self-assembly of nanoparticles into Langmuir-Blodgett films: Effect of polymer concentration
Beatriz Martín-García, M. Mercedes Velázquez
Materials Chemistry and Physics 2013, 141, 324. (2013)''

Photoluminescence Dynamics of CdSe QD/polymer Langmuir-Blodgett Thin Films: Morphology Effects
Martin-Garcia, Beatriz, Ribeiro Paulo, Pedro Miguel Neves; Costa, Silvia M. B.; Velázquez, Mercedes
The Journal of Physical Chemistry C, 2013, 117, 14787 (2013)''

Polymer/surfactant assisted self-assembly of nanoparticles into Langmuir-Blodgett films
T. Alejo, M.D. Merchán, M.M. Velázquez, J.A. Pérez-Hernández
Materials Chemistry and Physics, 2013, 138, 286. (2013)''

QDs Supported on Langmuir-Blodgett Films of Polymers and Gemini Surfactant
T. Alejo, B. Martín-García,M. D.Merchán, and M. M. Velázquez
Journal of Nanomaterials, 2013, Article ID 287094, 10 pages (2013)''

The Role of Oxidative Debris on Graphene Oxide Films
D. López-Díaz, M. Mercedes Velázquez, S. Blanco de la Torre, A. Pérez-Pisonero, R. Trujillano, J. L. G. Fierro, S. Claramunt and A. Cirera
ChemPhysChem 2013, 14, 4002 (2013)''

Functionalization of reduced graphite oxide sheets with a zwitterionic surfactant.
Martín-García, B.; Velázquez, M.M.; Rossella, F.; Bellani, V.; Diez, E.; Fierro, J.L.G.; Perez-Hernández, J.A.; Hernández-Toro, J.; Claramunt, S.; Cirera, A.
ChemPhysChem 2012, 13, 3682. (2012)''

Interaction Between Polyethyleneimine and Zwitterionic Surfactant: Effect on Association Processes in Bulk and Deposition onto Solid Wafers.
Heisig, S.; Merchán, M. D.; Velázquez, M. M.
Journal in Colloid Science and Biotechnology, 2012, 1, 33. (2012)''

Specific ion effects on the properties of cationic Gemini surfactant monolayers
Alejo, T.; Merchán, M. D.; Velázquez, M. M.
Thin solid Films, 519, 5689-5695, 2011. (2011)''

Spontaneous vesicles modulated by polymers.
Velázquez, M. M., Valero, M., Ortega, F.
Polymers, 3, 1255-1267, 2011. (2011)''

Langmuir and Langmuir-Blodgett films of a maleic anhydride derivative: effect of subphase divalent cations.
Martín-García, B.; Velázquez, M. M.; Pérez-Hernández, J.A.; Hernández-Toro, J.
Langmuir, 26, 14556-14562, 2010 (2010)''

Properties of CHAPS micelles modulated by different polyelectrolytes.
Merchán, M. D.; Velázquez, M. M.
Colloids and Surfaces A, 366, 12- 17 (2010)''

Effect of the addition of polyelectrolytes on monolayers of carboxybetaines.
Delgado, C.; Merchán, M. D., Velázquez, M. M.
Journal of Physical Chemistry B, 112, 687-693 (2008)''

Evidence of glass transition in thin films of maleic anhydride derivatives: effect of the surfactant coadsorption.
López-Díaz, D., Velázquez, M.M.
European Physical Journal, 26, 417-425 (2008)''

Role of the entropic contributions on the synergistic effect in mixed micelles.
Velázquez, M. M.
Current topics in Colloid & Interface Science Vol. 7, 41-46 (2007)''

Structure and size of spontaneously formed aggregates in Aerosol OT/PEG mixtures: effects of polymer size and composition.
Velázquez, M.M.; Valero, M., Ortega, F., Rodrí­guez González, J.B.
Journal of Colloid and Interface Science, 316, 762 -770 (2007)''

Variation of the critical micelle concentration with surfactant structure: a simple method to analyze the role of the attractive-repulsive forces on the micellar association.
D. López-Díaz and M. M. Velázquez
The Chemical Educador, 12, 327-330 (2007)''

Effect of micelles on the dynamic surface tension of zwitterionic surfactants.
Delgado, C., López-Díaz, D., Merchán, M. D., Velázquez, M.M.
Tenside Surfactant and Detergents, 43, 192 -196 (2006)''

Effect of surfactant structure on the adsorption of carboxybetaines at the air-water interface.
Delgado, C., Merchán, M. D., Velázquez, M. M., Anaya, J.
Colloids and Surfaces A, 280, 17-22 (2006)''

Surface properties of mixed monolayers of sulfobetaines and ionic surfactants.
López-Díaz, D., García-Mateos, I., Velázquez, M.M.
Journal of Colloid and Interface Science, 299, 858-866 (2006)''

Langmuir Monolayers of the Zwitterionic Surfactant Hexadecyl 1-N-L-tryptophan-glycerol-ether.
Velázquez, M.M, M.M.; Ortega, F.; Monroy, F.; G. Rubio, R. Pegiadou, S.; Pérez, L.; Infante, M.R.
Journal of Colloid and Interface Science, 283, 144-152 (2005)''

Synergism in mixtures of zwitterionic and ionic surfactants
López-Díaz, D., García-Mateos, I., Velázquez, M.M
Colloids and Surfaces A, 270-271, 153-162 (2005)''

Effect of the addition of water-soluble polymers on the interfacial properties of Aerosol OT vesicles
Valero, M. ; Velázquez, M.M.
Journal of Colloid and Interface Science, 278, 465-471 (2004)''

The adsorption Kinetics of 1-N-L- Tryptophan-Glycerol-Ether surfactants at the air-liquid Interface
Delgado, C.; Merchán, M.D.; Velázquez, M.M.; Pegiadou, S.; Perez, L.; Infante, M.R.
Colloids and Surfaces A, 233, 137-144 (2004)''

Polymer effects on the structure and properties of w/o microemulsions
Velázquez, M.M.; González-Blanco, M.C.
Recent Development in Colloids and Interface Research Vol.1 Part II 347-359 (2003)''

Effect of additives on the adsorption of Aerosol OT at the air-water interfaces studied by equilibrium and dynamic surface tension measurements.
Pedrosa, A. B.; Briz, J.I. and Velázquez, M.M.
J. Surf. Deterg. 365-370 (2002)''

Effect of water-soluble polymers on the morphology of Aerosol OT Vesicles.
Briz, J.I. and Velázquez, M.M.
Journal of Colloid and Interface Science, 247,437-446 (2002)''

Light Scattering and electrical conductivity studies of the Aerosol OT Toluene water-in oil microemulsions.
Velázquez M. M, Valero, M., Ortega, F.
J. Physical Chemistry B, 105, 10163-10168 (2001)''

Structural transition in a bicationic amphiphile system studied by light scattering, conductivity and surface tension measurements.
Viseu, M.I.; Velázquez, M.M.; Campos, C.S.; García-Mateos, I.; Costa, S.M.B.
Langmuir, 16 4882-4889 (2000)''

Complexation of non-steroidal anti-inflammatory drug Nabumetone with modified and unmodified cyclodextrins
Valero, M.; Costa, S.B.M.; Ascenso, J.R.; Velázquez, M.M.; Rodríguez, L.J.
Journal of Inclusion Phenomena and Macrocyclic Chemistry, 35, 663-677 (1999)''

Effect of solvent on the water properties of w/o microemulsions
González-Blanco, C.; Rodríguez, L. J.; Velázquez, M.M.
Journal of Colloid and Interface Science, 211, 380-386 (1999)''

Effect of water soluble polymers on the surface properties of 3(dimethyldodecylammonium)-propane sulfonate in aqueous solutions.
Ribera, R.; Velázquez, M.M.
Langmuir , 15, 6685-6691 (1999)''

Dynamic light scattering and infrared spectroscopic studies of the interaction of poly(vinylpyrrolidone) polymers with Aerosol OT/isooctane water-in-oil microemulsions
González-Blanco, C.; Velázquez, M.M; Ortega, F.
Langmuir , 13, 6095-6100 (1997)''

Effect of the addition of water-soluble polymers on the structure of Aerosol OT water-in-oil microemulsions: A Fourier Transform infrared spectroscopy study
González-Blanco, C.; Rodriguez, L.J. ; Velázquez, M.M.;
Langmuir, 13, 1938-1945 (1997)''

Fluorescence study of Acridone in w/o microemulsions perturbed by the addition of water-soluble polymers
González-Blanco, C.; Velázquez, M.M.; Costa, S.M.B.; Barreleiro, P.
Journal of Colloid and Interface Science, 189, 43-50 (1997)''

Interaction between cetyl pyridinium chloride and water-soluble polymers in aqueous solutions
García-Mateos, I., Pérez, S., Velázquez, M.M.
Journal of Colloid and Interface Science, 194, 356-363 (1997)''