Luquin Martínez, Asunción

Profile Picture

Email Address

person.page.identifierURI

https://academica-e.unavarra.es/handle/2454/49473

Birth Date

Job Title

Last Name

Luquin Martínez

First Name

Asunción

person.page.departamento

Química Aplicada

person.page.instituteName

ORCID

0000-0002-2264-5956

person.page.observainves

750925

person.page.upna

810365

Name

Filters

2007 - 200912010 - 20162
Reset filters

Settings

Search Results

Now showing 1 - 3 of 3
  • Thumbnail Image
    PublicationOpen Access
    Synthesis and molecular structures of palladium(II) metalated 2-phenylpyridine complexes [PdCl(pyC6H4)L] containing amino- or acetylamino-pyridine co-ligands
    (Elsevier, 2016) Al-Jibori, Subhi A.; Gergees, Hayfa M.; Al-Rubaye, Mousa S.; Basak-Modi, Sucharita; Luquin Martínez, Asunción; Química Aplicada; Kimika Aplikatua
    A number of cyclometalated palladium(II) complexes [PdCl(pyC6H4)(L)] containing amino-pyridine or acetylamino-pyridine co-ligands (L) have been prepared from the reaction of [Pd(pyC6H4)(μ-Cl)]2 with two equivalents of these ligands. Crystal structures of four examples have been carried out, each showing a distorted square planer geometry around palladium with the amino- or acetylamino-pyridine ligand being coordinated via nitrogen atom and lying almost perpendicular to the square-plane. Similarly, [PdCl(pyC6H4)(κ1-dppmO)] and [PdCl(pyC6H4)(κ1-dppeO)] result from reactions of [Pd(C6H4py)(μ-Cl)]2 with Ph2PCH2P(O)PPh2 (dppmO) and Ph2PCH2CH2P(O)PPh2 (dppeO) respectively. Here the phosphine ligand is attached via only phosphorus, however, removal of the chloride upon addition of AgNO3 lead to the formation of [Pd(pyC6H4)(κ2-dppmO)][NO3] and [Pd(pyC6H4)(κ2-dppeO)][NO3] in which the ligands are believed to bind in a chelate fashion.
  • Thumbnail Image
    PublicationOpen Access
    Rosa canina extracts have antiproliferative and antioxidant effects on caco-2 human colon cancer
    (Public Library of Science, 2016) Jiménez Alonso, Sandra; Gascón, Sonia; Luquin Martínez, Asunción; Laguna, Mariano; Ancín Azpilicueta, Carmen; Rodríguez Yoldi, María Jesús; Química Aplicada; Kimika Aplikatua
    The in vitro antiproliferative and antioxidant effects of different fractions of Rosa canina hips on human colon cancer cell lines (Caco-2) was studied. The compounds tested were total extract (fraction 1), vitamin C (fraction 2), neutral polyphenols (fraction 3) and acidic polyphenols (fraction 4). All the extracts showed high cytotoxicity after 72 h, both low and high concentrations. The flow cytometric analysis revealed that all the fractions produce disturbances in the cell cycle resulting in a concomitant cell death by an apoptotic pathway. Changes in the redox status of Caco-2 cells in response to Rosa canina hips were determined. Cells were exposed to hydrogen peroxide in presence of plant fractions and the production of Reactive Oxygen Species (ROS) was significantly decreased. Therefore, our data demonstrate that rosehip extracts are a powerful antioxidant that produces an antiproliferative effect in Caco-2 cells. Therefore, these results predict a promising future for Rosa canina as a therapeutic agent. Thus, this natural plant could be an effective component of functional foods addressed towards colorectal carcinoma.
  • Thumbnail Image
    PublicationOpen Access
    Application of gold complexes in the development of sensors for volatile organic compounds
    (World Gold Council, 2007) Luquin Martínez, Asunción; Elosúa Aguado, César; Vergara, Elena; Estella Redín, Juncal; Cerrada, Elena; Bariáin Aisa, Cándido; Matías Maestro, Ignacio; Garrido Segovia, Julián José; Laguna, Mariano; Química Aplicada; Kimika Aplikatua; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
    Two different kinds of sensors have been developed by using the same kind of vapochromic complexes. The vapochromic materials [Au2Ag2(C6F5)(4)L-2](n) have different colours depending on the ligand L. These materials change, reversibly, their optical properties, colour and fluorescence, in the presence of the vapours of volatile organic compounds (VOCs). For practical applications, two different ways of fixing the vapochromic material to the optical fibre have been used: the sol-gel technique and the electrostatic self-assembly method (ESA). With the first technique the sensors can even be used to detect VOCs in aqueous solutions, and using the second method it has been possible to develop nanosensors.