Dr. Andrés Guerrero Martínez (Confirmed)

Affiliation: Physical Chemistry Department, University Complutense of Madrid, Spain
Title: Supramolecular Chemistry for Nanoplasmonic Design

Dr. Eulalia Pereira (Confirmed)

Affiliation: Chemistry and Biochemistry Department, REQUIMTE, University of Porto, Portugal
Title: Study of the interaction of gold nanoparticles with tyrosinase and laccase

Dr. Nelsi Zaccheroni (Confirmed)

Affiliation: Chemistry Department, University of Bologna, Italy
Title: Luminescent magnetic nanoparticles in complex nano-objects.

Dr. Jan Ivanco (Confirmed)

Affiliation: Institute of Physics, Slovak Academy of Sciences, Bratislava, Slovakia
Title: Superhydrofobic nanoparticle coatings for polymer solar cells

Dr. Silvia Orlanducci (Confirmed)

Affiliation: Dip. di Scienze e Tecnologie Chimiche, Università di Roma “Tor Vergata”, Roma, Italy
Title: New perspectives of multifunctional nanomaterials: metal nanoparticles on carbon nanomaterials

Dr. Michael Morris (Confirmed)

Affiliation:  Dept. of Chemistry, University College Cork, And CRANN, Trinity College Dublin, Ireland
Title:  Development of block copolymer lithography for industrial development of patterned surfaces

Dr. Qing Zhang (To be confirmed)

Affiliation: School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
Title: Logic Gates Based Carbon Nanotube Network

Dr. Maribel Guzman (To be confirmed)

Affiliation: Engineering Department, Pontificia Universidad Católica, Lima, Perú
Title: Synthesis and characterization of silver and copper oxide nanoparticles and their antimicrobial applications

Dr. Miguel A. Correa-Duarte (Confirmed)

Affiliation: Physical Chemistry Department, University of Vigo, Spain
Title: Complex inorganic nanocapsules: synthesis and applications

Dr. Önder Pekcan (Confirmed)

Affiliation: Kadir Has University, Fatih, Istanbul, Turkey
Title: Conductivity and Optical Percolation in Polymer-Carbon Nanotube Composites

Dr. Maria Teresa Machini (Confirmed)

Affiliation: Biochemistry Department, Institute of Chemistry, University of Sao Paulo, Brazil
Title: Proteases immobilization in superparamagnetic nanoparticles: changes in properties and applicability in peptide synthesis

Dr. Valentina Mussi (Confirmed)

Affiliation: National Research Council, Institute for Complex Systems, ISC-CNR, Roma, Italy
Title: Raman and IR mapping for label-free detection and characterization of carbon nanotubes in biomedical applications

Dr. Klaus von Haeften (Confirmed)

Affiliation: Department of Physics and Astronomy, Universityof Leicester, UK
Title: Nanoparticle production by deposition of metal and semiconductor atomic vapour onto liquid micro jets – an exceptionally versatile combination of gas phase and wet-chemical synthesis

Dr. Alex Holleitner (Confirmed)

Affiliation: Technische Universität München, Walter Schottky Institut and Physik-Department, Zentrum für Nanotechnologie und Nanomaterialien, Garching, Germany
Title: Optoelectronics of nanoparticle arrays

Dr. Viviane Pilla (Confirmed)

Affiliation: Federal University of Uberlândia-UFU, Brazil
Title: Photothermal Spectroscopic Characterization in Nanoparticles Embedded in Biomaterials: Dental Resin and Biofluids

Dr. Tsugio Sato (Confirmed)

Affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
Title: Facile solvothermal synthesis of tungsten bronze nanoparticles for heat-ray shielding application

Dr. Hiroki Takeshita (Confirmed)

Affiliation: Department of Materials Science and Technology, Nagaoka University of Technology, Japan.
Title: Colloidal Crystallization Kinetics of Aqueous Dispersion of Temperature-responsive Polymer Microgels

Dr. Maria Inês Bruno Tavares (Confirmed)

Affiliation: Universidade Federal do Rio de Janeiro, Brazil
Title: Use of NMR relaxometry to evaluate nanostructured material to drug delivery

Dr. Maria J. López (Confirmed)

Affiliation:  Departamento de Física Teórica, Atómica y Óptica. Facultad de Ciencias, Universidad de Valladolid, España
Title:  The role of metal doping on the hydrogen storage capacity of nanoporous carbons

Dr. Marcio Tiera (Confirmed)

Affiliation: Departamento de Química e Ciências Ambientais, UNESP-Instituto de Biociências Letras e Ciências Exatas, São José do Rio Preto-SP, Brazil
Title: Nanoparticles of chitosan derivatives as non-viral vectors for Gene Therapy

Dr. Ashok Vaseashta (Confirmed)

Affiliation: Institute for Advanced Sciences Convergence & Int’l Clean Water Institute, Herndon, USA
Title: Nexus of Innovations in Nanoparticles/Nanomaterials for Safety, Security, and Sustainability

Dr.Stefan Reinemann (Confirmed)

Affiliation:  Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. Germany
Title:  Organic-inorganic hybrid nanoparticles of high antimicrobial efficacy

Dr. Alicia Reyes Arellano (Confirmed)

Affiliation: Organic Chemistry Department, National School on Biological Sciences, México, D. F. México.
Title: Organic Nanoparticles and his Preliminary Evaluation in Mycobacterium tuberculosis.

Dr. Emanuele Orgiu (Confirmed)

Affiliation:  Institut de Science et d’Ingénierie Supramoléculaires (I.S.I.S.) University of Strasbourg, France
Title:

Organic Electronics & Photochromes: a bright future?

Dr. Sara Bonacci (Confirmed)

Affiliation:  Nanochemistry Laboratory, Institut de Science et dìngenierie Supramoléculaires (ISIS) University of Strasbourg, France
Title: A molecular-size thermometer

Dr. Kuen Song Lin (Confirmed)

Affiliation: Department of Chemical Engineering & Materials Science/Environmental Technology Research Center, Yuan Ze University, Chung-Li 320, Taiwan, R.O.C.
Title:

Preparation and Characterization of Ag/Fe/W/V-Loaded Titania Nanotubes for Photocatalysis of Dyes and Environmental Hormones Contaminated Wastewaters.

Dr. Mei-Feng Lai (Confirmed)

Affiliation: Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu 300, Taiwan
Title: Endocytic capacities of iron oxide nanoparticles for different carcinoma cells

Dr. Niti Nipun Sharma (Confirmed)

Affiliation: Birla Institute of Technology & Science, Pilani, India
Title: Investigations on thermoresponsive hydrogels embedded with nanoshells for realization of micropumps in glaucoma treatment

Dr. Wenjea J. Tseng (Confirmed)

Affiliation: Department of Materials Science and Engineering, National Chung Hsing University, Taiwan
Title: Multifunctional Nanocomposite Particles through Microstructural Design

Dr. Maria J. López (Confirmed)

Affiliation: Departamento de Física Teórica, Atómica y Óptica. Facultad de Ciencias, Universidad de Valladolid, España
Title: The role of metal doping on the hydrogen storage capacity of nanoporous carbons

Dr. Vaclav Cuba (Confirmed)

Affiliation: Czech Technical University in Prague, Czech Republic
Title: Radiation induced preparation of oxide nanoparticles

Dr. Szczepan Zapotoczny (Confirmed)

Affiliation: Jagiellonian University, Faculty of Chemistry, Krakow, Poland
Title: Superparamagnetic Iron Oxide Nanoparticles Coated with Biocompatible Chitosan Derivatives as Efficient Contrast Agents for Magnetic Resonance Imaging

Dr. Stefanos Mourdikoudi (Confirmed)

Affiliation:

Department of Physical Chemistry, University of Vigo, 36310 Vigo, Spain

Title:

Electron transfer kinetics performance for palladium nanomaterials: effects of morphology, surfactants and self-assembly

Dr. Yoed Tsur (Confirmed)

Affiliation: Department of Chemical Engineerings, Technion Institute of Technology, Israel
Title: Nanoparticles for ReRAMs

Dr. Nathalie Destouches (Confirmed)

Affiliation:  University of Lyon – University Jean Monnet, Laboratory Hubert Curien, Saint-Etienne, France
Title:  Self-organization of metal nanoparticles in waveguides under free-space light excitation

Dr. Mihaela Leonida (Confirmed)

Affiliation: Fairleigh Dickinson University, USA
Title: Encapsulation in chitosan-based nanoparticles offers advantages for bioactive agents

Dr. Shaneel Chandra (Confirmed)

Affiliation:  The University of the South Pacific, Fiji
Title:  Performance characterization of gold nanoparticles-modified physically small carbon sensors towards sensitive and selective As(III) detection in aquatic samples.

Dr. Gary Chinga Carrasco (Confirmed)

Affiliation: PFI, Paper and novel materials, Norway
Title: Nanocellulose from wood as a biomaterial for biomedical applications

Dr. Catherine Dendrinou-Samara (Confirmed)

Affiliation: Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Greece
Title: Ferrite nanoparticles with enhanced magnetization candidates for theranostics

Dr. Masaharu Oshima (Confirmed)

Affiliation:  Synchrotron Radiation Research Organization, The University of Tokyo, Japan.
Title:  Soft X-ray nano-spectroscopy for nano wire ReRAM and graphene FET

Dr. David Rickerby (Confirmed)

Affiliation: European Commission Joint Research Centre, Institute for Environment and Sustainability, 21027 Ispra VA, Italy
Title: Nanostructured solid state gas sensors for monitoring air pollution

Dr. Andriy Voronov (Confirmed)

Affiliation: North Dakota State University in Fargo, USA
Title: Invertible Polymer Nanoassemblies for Delivery of Poorly Water-Soluble Drugs

Dr. Mohamed Bouazaoui (Confirmed)

Affiliation: Laboratory for Physics of Lasers, Atoms and Molecules – University Lille 1, 59650 Villeneuve d’Ascq, France
Title: Photo-assisted growth of semiconductor nanostructures in silica matrices

Dr. Byeong Kyu Lee (Confirmed)

Affiliation:

Department of Civil and Environmental Engineering, University of Ulsan (UOU),Daehak-ro 93, Mugeo-dong, Nam-gu, Ulsan 680-749, Korea (ROK)

Title:

Application of nano zeolite for the removal of phenol from aqueous solution

Dr. Norbert Steinfeldt (Confirmed)

Affiliation: Leibniz Institute for Catalysis at the University of Rostock, Germany
Title: Synthesis of tailored metallic nanoparticles and their application in liquid phase reaction

Dr. Manuela Scarselli (Confirmed)

Affiliation: University of Rome ‘Tor vergata’ ,Physics Department, Rome, Italy
Title: In situ formation of noble metal nanoparticles on multiwalled carbon nanotubes and its implication in metal–nanotube interactions

Dr. Katariina Torvinen (Confirmed)

Affiliation: VTT – Fibre Product Properties, Jyväskylä, Finland
Title: Flexible filler-nanofibrillated cellulose substrate for printed electronics applications

Dr. Laura Rodríguez Raurell (Confirmed)

Affiliation: Inorganic Chemistry Department, Faculty of Chemistry, University of Barcelona, Spain.
Title: Formation of Au(0) nanoparticles from preorganized hydrogels

Dr. Ram Yamuna (Confirmed)

Affiliation: Department of Sciences (Chemistry), Amrita Vishwa, Vidyapeetham University, Coimbatore, India
Title: A comparative study of porphyrin functionalized carbon nano materials

Dr. Alessandro Martucci (Confirmed)

Affiliation: Università di Padova, Dipartimento di Ingegneria Industriale, Padova, Italy
Title: Optical gas sensors base on Localized Surface Plasmon Resonance

Dr. Theodora Krasia (Confirmed)

Affiliation: Department of mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, CYPRUS
Title: Synthesis, characterization and applications of multiresponsive polymer-based nanocomposite networks and membranes

Dr. Gregg B. Fields (Confirmed)

Affiliation: Torrey Pines Institute for Molecular Studies, Port St. Lucie, FL, USA
Title: Nanodiamonds for Improved Drug Delivery

Dr. Pier Paolo Pompa (Confirmed)

Affiliation: Center for Bio-Molecular Nanotechnology, Italian Institute of Technology (IIT), Arnesano (Lecce), Italy
Title: Hybrid Nano-sensors for the colorimetric detection of biomarkers.

Dr. João Rocha (Confirmed)

Affiliation: Centre for Research in Ceramics and Composite Materials-CICECO, University of Aveiro, Portugal
Title: All-In-One Optical Heater-Thermometer Nanoplatform Operative From 300 to 2000 K based on Er3+ Emission and Au Incandescence

Dr. Erwann Guénin (Confirmed)

Affiliation: Université Paris 13, Sorbonne Paris Cité, Laboratoire CSPBAT UMR CNRS, Paris, France
Title: Microwave irradiation and Click chemistry for controlled and efficient nanoparticle surface modifications

Dr. Inhar Imaz (Confirmed)

Affiliation: Catalan Institute of Nanotechnology, CIN2(ICN-CSIC), Bellaterra, Barcelona, Spain
Title: A spray-drying strategy for synthesis of nanoscale metal–organic frameworks and their assembly into hollow superstructures

Dr. Kyriakos Stylianou (Confirmed)

Affiliation: Catalan Institute of Nanotechnology, CIN2(ICN-CSIC), Bellaterra, Barcelona, Spain
Title: Femtoliter chemistry assisted by microfluidic-pen lithography

Dr. Stefania Galdiero (Confirmed)

Affiliation: University of Naples “Federico II” , Department of Pharmacy, Naples, Italy
Title: Viral peptide shuttles for nanosystem delivery

Dr. Keigo Suzuki (Confirmed)

Affiliation: Murata Manufacturing Co., Ltd., Japan
Title: Liquid-phase fabrication of semiconductor oxide nanoparticles for optical applications

Dr. Colette McDonagh (Confirmed)

Affiliation: Biomedical Diagnostics Institute, Dublin City University, Ireland
Title: Fluorescent Silica Nanoparticles for Biomedical Applications

Dr. Marta Mameli (Confirmed)

Affiliation:  Ecole Polytechnique Fédérale de Lausanne, Route Cantonale 1015, Lausanne, Switzerland
Title:  Dynamic libraries for the synthesis of mixed ligand silica nanoparticles

Dr. Despina Fragouli (Confirmed)

Affiliation: Nanophysics, Istituto Italiano di Tecnologia, Genoa, Italy
Title: Magnetically controlled assembly of nanoparticles into polymers: Properties and Applications

Dr. Om Shankar Prajapati (Confirmed)

Affiliation: Department of Mechanical Engineering, MLV Government Textile and Engineering College, Bhilwara, Rajasthan-311001, India
Title: Heat Transfer with Nanofluids

Dr. Nicolas A. Cordero (Confirmed)

Affiliation: Physics Department., University of Burgos, Spain
Title: Computational study of the interaction of surfactant molecules with carbon nanostructures

Dr. Gheorghe Dinescu (Confirmed)

Affiliation: University of Bucharest, Magurele-Bucharest, Romania
Title: Carbon nanowalls and metallic particles: synthesis by plasma and applications

Dr. Lucien Saviot (Confirmed)

Affiliation: Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Université de Bourgogne, Dijon Cedex, France
Title: Nanoparticles as building blocks for narrow-band nanoacoustic materials

Dr. Umapada Pal (Confirmed)

Affiliation: Institute of Physics, Autonomous University of Puebla, Mexico
Title: Synthesis of stable Au nanoparticles using potato extract

Dr. Chang-Sik Ha (Confirmed)

Affiliation: Dept. of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea
Title: Hollow mesostructured Nanomaterials for Metal Adsorption

Dr. Sergey Yu Sokovnin (Confirmed)

Affiliation: Institute of Electrophysics, Ural Branch RAS, Yekaterinburg, Russia
Title:

New radiopaque contrast agents based on tantalates yttrium and lanthanum in  nanodimensional condition

Dr. Nekane Guarrotxena (Confirmed)

Affiliation: Nanohybrids and Interactive Polymers Group, Institute of Polymer Science and Technology (ICTP), Spanish National Research Council (CSIC), Spain
Title: A botom-up-built SERS nanotags-based biosensor

Dr. Susana Piçarra Gonçalves (Confirmed)

Affiliation: Institute of Nanoscience and Nanotechnology, CQFM, IST, Lisbon, Portugal + Setúbal Politechnic Institute, ESTSetúbal, Setúbal, Portugal
Title:

Is it possible to produce superhydrophobic surfaces from water-borne coatings?

Dr. Mihai Cosmin Corobea (Confirmed)

Affiliation:The National Institute for Research & Development in Chemistry and Petrochemistry, ICECHIM, Bucharest, Romania

Title:Clay nanoparticles and polymer nanocomposites

Dr. Marie-Alexandra Neouze-Gauthey (Confirmed)

Affiliation:  Interdisciplinary Laboratory on nanometric and supramolecular organization (LIONS); CEA Saclay, France
Title:

Topologically constrained amorphous-to-crystal conversion in luminescent nanoparticles

Dr. Hendrik C Swart (Confirmed)

Affiliation: University of the Free State, Bloemfontein, South Africa
Title: Luminescent properties of phosphor nano thin films

Dr. Gedi Mainelis (Confirmed)

Affiliation: Rutgers University, New Brunswick, NJ, 08901, USA
Title: Potential inhalation exposures to nanoparticles due to the use of nanotechnology-enabled consumer products

Dr. Eggehard Holler (Confirmed)

Affiliation:  8700 Beverly Blvd, Advanced Health Science Pavilion-Neuroscience, Los Angeles, CA, USA
Title:  Biocompatibility and efficacy of Triple-Negative Breast Cancer treatment with polymalic acid conjugated antisense oligonucleotides

Dr. Kenji Yasuda (Confirmed)

Affiliation: Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Japan
Title: Two-Dimensionally Indexed Precise-Size-Controlled Multi-Metal Nano-Particle Probe Set with Adaptive-Electron Microscopy for Identification of Genome/Proteome Expression Profiles

Dr. Hyonchol Kim (Confirmed)

Affiliation: Kanagawa Academy of Science and Technology, Japan
Title: Nano-Cups: Fabrication and Application of Cup-Shaped Functional Nano-Particles for Cell Biology

Dr. Eggehard Holler (Confirmed)

Affiliation: Department of Neurosurgery, Nanomedicine Research Center, Cedars Sinai Medical Center, Los Angeles, California
Title: Differential diagnosis of brain tumors by dynamic MRI-contrast enhancement using targeted Gd-DOTA-nanoconjugates of polymalic acid

Dr. Andrey Osipov (Confirmed)

Affiliation:

Institute of Problems of Mechanical Engineering RAS, V.O., Bolshoj pr. 61, St. Petersburg, 199178 Russia

Title:

Nanoscaled silicon carbide on silicon: a new material for optoelectronics

Dr. Liudvikas Pranevicius (Confirmed)

Affiliation: Physics Department, Vytautas Magnus university, Kaunas, Lithuania
Title: Conversion of amorphous Ti films into nanocrystalline photoactive TiO2 using water vapor plasma

Dr. Carla Meledandri (Confirmed)

Affiliation: Department of Chemistry and MacDiarmid Institute for Advanced Materials and Nanotechnology, University of Otago, Dunedin, New Zealand
Title: Synthesis and phase transfer of shape-controlled magnetic nanoparticles and investigation of their magnetic resonance properties in suspension

Dr. Lin Zhongjie (Confirmed)

Affiliation: Department of Physics, University of Warwick, UK
Title: Novel transition metal phosphate materials: solid state NMR investigation and electrode applications

Dr. Fabrizio Mancin (Confirmed)

Affiliation: Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, Italy
Title: Organization and cooperation in the nanoparticle-protecting monolayer

Dr. Jessica Rodríguez-Fernández (Confirmed)

Affiliation: Photonics and Optoelectronics Group, Ludwig-Maximilians-Universität Munich, Germany
Title: Shape-Controlled Synthesis and Optoelectronic Properties of Copper Telluride Nanocrystals

Dr. Georg Garnweitner (Confirmed)

Affiliation:  Institute for Particle Technology, TU Braunschweig, Germany
Title:   Surface Chemistry of Metal Oxide Nanoparticles and its Effect on Colloidal Stability

Dr. Barbara Ballarin (Confirmed)

Affiliation: Dipartimento di Chimica Industriale Toso Montanari, Universita di Bologna, Italia
Title:

Chemical and electrochemical synthesis of supported metal nanoparticles

Dr. Liana Silva (Confirmed)

Affiliation: Nanomedicine & Drug Delivery Systems Group, iMed.UL – Research Institute for Medicines and Pharmaceutical Sciences, Faculdade de Farmácia, Universidade de Lisboa (Edifício E), Portugal
Title: Insights into the biophysics underlying lipid interactions in nanoliposomes: clues from fluorescence spectroscopy, confocal and two-photon microscopy

Dr. Antonio Stocco (Confirmed)

Affiliation: Laboratoire Charles Coulomb, Université Montpellier 2, Montpellier, France
Title: Nanoparticles at the fluid interface

Dr. Isabel Pastoriza (Confirmed)

Affiliation: Colloid Chemistry Group, Departamento de Química Física, Universidade de Vigo, Spain
Title: Engineering metal nanoparticles for sensing

Dr. Clara Santos Cuevas (Confirmed)

Affiliation: Department of Radioactive Materials, Instituto Nacional de Investigaciones Nucleares, Mexico
Title: Molecular Targeting Radiotherapy with cyclo-RGDfK(C) Peptides Conjugated to 177Lu-labeled Gold Nanoparticles in Tumor-Bearing Mice

Dr. Durga Basak (Confirmed)

Affiliation: Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India
Title: Sulphur doping leading to enhanced conductivity in nanostructured zinc oxide with high transparency applicable for photocells

Dr. Angelo Taglietti (Confirmed)

Affiliation: Chemistry Department, University of Pavia, Italy
Title: Layer by layer assembling of different nano-objects on bulk surfaces: towards supra-nanomaterials for antibacterial purposes

Dr. Solenne Fleutot (Confirmed)

Affiliation: University of Lorraine, Nancy, France
Title: Spacing-Dependant Dipolar Interactions in Dendronized Magnetic Iron Oxide Nanoparticles 2D Arrays and Powders

Dr. Ahmet Nedim Ay (Confirmed)

Affiliation: Hacettepe University, Department of Chemistry, Ankara, Turkey
Title: Boron Removal by a Zeolite-Layered Double Hydroxide Nanocomposite.

Dr. Ayse Karakeceli (Confirmed)

Affiliation: Ankara University, Department of Chemistry, Ankara, Turkey
Title:

Fabrication of Chitosan/Nanohydroxyapatite Composite Scaffolds for Tissue Engineering Applications

Dr. Graça Neves Morgado (Confirmed)

Affiliation: Chemistry Department, University of Aveiro, Portugal
Title: New photoactive nanomaterials for environmental and sensing  applications

Dr. Suresh Kumar (Confirmed)

Affiliation: Department of Chemistry, S. V. National Institute of Technology, India
Title: A Dual recognition of thiram and paraquat dichloride pesticides using cyclen dithiocarbamate functionalized silver nanoparticles as a colorimetric probe

Dr. Marie Alexandra Gauthey Nouze (Confirmed)

Affiliation: Interdisciplinary Laboratory on nanometric and supramolecular organization (LIONS); CEA Saclay, France
Title:

Topologically constrained amorphous-to-crystal conversion in luminescent nanoparticles

Dr. Raul Arenal (Confirmed)

Affiliation:  Laboratorio de Microscopias Avanzadas (LMA), Instituto de Nanociencia de Aragon (INA), Universidad de Zaragoza, Zaragoza (Spain)
Title:  Tomographical and plasmonic studies via TEM-EELS on gold nanoparticles

Dr. Birgul Karan (Confirmed)

Affiliation:  Hacettepe University, Department of Chemistry,Beytepe,Turkey
Title:

Iron oxide@layered double hydroxide nanocomposites as anti-cancer drug reservoir and delivery systems

Dr. Yashushige Mori (Confirmed)

Affiliation: Department of Chemical Engineering and Materials Science, Doshisha University, Japan
Title: Preparation of Cu2ZnSnS4 semiconductor nanoparticles from solution