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U12. Nanostructured liquid characterization unit

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U12. Nanostructured liquid characterization unit

  • Scientific Director: Prof. Conxita Solans csmqci@cid.csic.es
  • Scientific Coordinator: Jordi Esquena jemqci@iqac.csic.es
  • Entities: Collodial and Interfacial Chemistry Group (QCI) at the Institure of Advanced Chemistry of Catalonia (ICAC) & Consejo Superior de Investigaciones Científicas (CSIC)
  • Address: Jordi Girona, 18-26, 088034, Barcelona, Span
  • Phone: +34 934 006 159
  • Web: QCI – IQAC- CSIC
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Description

The unit is located at the Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), in Barcelona and it is coordinated by the Colloidal and Interfacial Chemistry Group, led by Dr. Concepción Solans. The unit is focused on the characterization of nanostructures in liquids and liquid/liquid interfaces, such as micelles, liposomes, micro- and nano-emulsions, and nanoparticles. The unit features state-of-the-art instrumentation for the determination of various parameters such as size distribution and zeta potential (surface charge), critical micelle concentration (CMC), solubilization capacity, osmolarity, surface and interfacial tension, wettability, refractive index, turbidity, colloidal stability, density, viscosity and other rheological parameters (shear and elastic moduli, critical yield stress, etc.)

News U12

29 May

DHA and l-carnitine loaded chitosan hydrogels as delivery systems for topical applications

The journal JCR Colloids and Surfaces A: Physicochemical and Engineering Aspects, has recently publish and interested article which show the results of the research lead by Jordi Esquena, Coordinator of Unit 12 of NANBIOSIS,. The formation of biocompatible hydrogels of chitosan crosslinked with genipine deposited on textile substrates has been studied and the incorporation and release of active ingredients for cosmetic applications has been investigated. The active principles studied have been dihydroxyacetone (DHA), which produces a sunless tanning effect; And carnitine, used as anti-cellulite agent. The results have shown that crosslinking with chitosan allows controlling the release rate of the active ingredients,[...]

24 May

Elastic and adhesion properties of adsorbed hydrophobically modified inulin films on latex particles using Atomic Force Microscopy (AFM)

In a study published in the journal Colloids and Surfaces A: Physicochemical and Engineering Aspects, by Jordi Esquena, Coordinator of Unit 12 of NANBIOSIS, among others, it has been shown that the latex particles dispersed with graft-type polymeric surfactants have excellent colloidal stability, which is attributed to the repulsion forces between the particles, which arise from the presence of adsorbed surfactant molecules. These forces of repulsion have been studied by means of Atomic Force Microscopy (AFM), between an AFM tip and a latex particle, with the presence of surfactant adsorbed on both. It has been observed that this repulsion is maintained even[...]

30 Mar

Methods for the In Vitro Characterization of Nanomedicines —Biological Component Interaction

An interesting article has been recently published, in the journal Personalized Medicine In the context of a public-private collaboration between Cristina Fornagera of Sagetis-Biotech and Conxita Solans, Scientific Director of Unit 12 of NANBIOSIS This review summarizes the main techniques used to assess the interaction of nanomedicines with biological systems, highlighting their advantages and disadvantages. The translation of knowledge from novel designed nanosystems at a research laboratory scale to real human therapies is usually a limiting or even a final point due to the lack of systematic studies regarding two aspects: nanoparticle interaction with biological components and nanoparticle cytotoxicity. For[...]

30 Mar

A new versatile methodology to produce polymeric nanoparticles loaded with gold nanoparticles

Conxita Solans, Scientific Director of Unit 12 of NANBIOSIS together with researchers of her group, Colloidal and Interfacial Chemistry of CIBER-BBN and IQAC-CSIC and the Department of Pharmacy and Pharmaceutical Technology, University of BarcelonaIn have published the research paper “Versatile Methodology to Encapsulate Gold Nanoparticles in PLGA Nanoparticles Obtained by Nano-Emulsion Templating” in the journal Pharmaceutical Research. The scientists have shown that a novel and very versatile methodology has been developed for the production of polymeric nanoparticles loaded with gold nanoparticles. In this work, gold-nanoparticles (AuNP) have been encapsulated in polymeric nanoparticles using a novel and versatile methodology based on nano-emulsion templating, whic[...]

14 Dec

From Chromonic Self-Assembly to Hollow Carbon Nanofibers: Efficient Materials in Supercapacitor and Vapor-Sensing Applications
From Chromonic Self-Assembly to Hollow Carbon Nanofibers: Efficient Materials in Supercapacitor and Vapor-Sensing Applications

Conxita Solans, Scientific Director of the Unit 12 NANBIOSIS is co-author of the research article recently published a research article in the journal Applied Materials & Interfaces. Carbon nanofibers (CNFs) with high surface area (820 m2/g) have been successfully prepared by a nanocasting approach using silica nanofibers obtained from chromonic liquid crystals as a template. CNFs with randomly oriented graphitic layers show outstanding electrochemical supercapacitance performance, exhibiting a specific capacitance of 327 F/g at a scan rate of 5 mV/s with a long life-cycling capability. Approximately 95% capacitance retention is observed after 1000 charge–discharge cycles. Furthermore, about 80% of capacitance is[...]

26 Oct

Water-in-water (W/W) emulsions
Water-in-water (W/W) emulsions

Jordi Esquena, Scientific Coordinator of Unit 12 of NANBIOSIS, has recently published an interesting review in the journal Current Opinion in Colloid & Interface Science, about W/W emulsions. Dr. Esquena describes the general background of research in the field and focuses on recent scientific advances and applications. Water-in-water (W/W) emulsions are colloidal dispersions of an aqueous solution into another aqueous phase. Such dispersions can be formed in mixtures of at least two hydrophilic macromolecules, which are thermodynamically incompatible in solution, generating two immiscible aqueous phases. Highly stable water-in-water emulsions can be formulated using fully biocompatible and edible components, and consequently,[...]

12 Sep

Nanbiosis-U12-Symposium honouring Professor Conxita Solans. Conference of the European Colloid and Interface Society (ECIS), Rome 2016
Symposium honouring Professor Conxita Solans. (ECIS Rome 2016)

In the frame of ECIS 2016, the 30th Conference of the European Colloid and Interface Society (ECIS), Rome 4-9 September, 2016, a special Symposium honouring Conxita Solans was organized on  September 8th – 2.00-5.00 pm. Conxita Solans, Scientific Director of Unit 12 of NANBIOSIS, has during many years been one of the leading scientists in the field of surfactants and dispersions. She has been  very active in ECIS, presenting her research results at several conferences,  being President and also organizing one ECIS meeting in Barcelona.[...]

31 Aug

DR. CONXITA SOLANS received the “Pierre Fillet” Prize 2016 awarded by the Formulation Group of the French Chemical Society (SCF)
DR. CONXITA SOLANS received the “Pierre Fillet” Prize 2016 awarded by the Formulation Group of the French Chemical Society (SCF)

Conxita Solans, Scientific Director of the Unit 12 NANBIOSIS, received last July 4 in the opening ceremony of the congress Formula VIII, the award Pierre Fillet 2016, given by the Formulation Group of the French Chemical Society (SCF). The prize was awarded to Dr Solans in recognition to her contributions on formulation of colloidal systems, namely on the design and characterization of Nanostructured Liquids such as nano-emulsions, microemulsions, micelles, etc, developed through Unit 12 of NANBIOSIS. Pierre Fillet was a major force behind formulation in France particularly and across Europe, he was one of the instigators of the first Formula[...]

U12-Nanostructured liquid characterization unit
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