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Pustovalov VK. Multi-temperature modeling of femtosecond laser pulse on metallic nanoparticles accounting for the temperature dependences of the parameters. NANOTECHNOLOGY AND PRECISION ENGINEERING 2022. [DOI: 10.1063/10.0013776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
This review considers the fundamental dynamical processes of metal nanoparticles during and after the impact of a femtosecond laser pulse on a nanoparticle, including the absorption of photons. Understanding the sequence of events after photon absorption and their timescales is important for many applications of nanoparticles. Various processes are discussed, starting with optical absorption by electrons, proceeding through the relaxation of the electrons due to electron–electron scattering and electron–phonon coupling, and ending with the dissipation of the nanoparticle energy into the environment. The goal is to consider the timescales, values, and temperature dependences of the electron heat capacity and the electron–phonon coupling parameter that describe these processes and how these dependences affect the electron energy relaxation. Two- and four-temperature models for describing electron–phonon relaxation are discussed. Significant emphasis is paid to the proposed analytical approach to modeling processes during the action of a femtosecond laser pulse on a metal nanoparticle. These consider the temperature dependences of the electron heat capacity and the electron–phonon coupling factor of the metal. The entire process is divided into four stages: (1) the heating of the electron system by a pulse, (2) electron thermalization, (3) electron–phonon energy exchange and the equalization of the temperature of the electrons with the lattice, and (4) cooling of the nanoparticle. There is an appropriate analytical description of each stage. The four-temperature model can estimate the parameters of the laser and nanoparticles needed for applications of femtosecond laser pulses and nanoparticles.
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Affiliation(s)
- Victor K. Pustovalov
- Belarussian National Technical University, Pr. Independency, 65, Minsk 220013, Belarus
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2
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Sygletou M, Benedetti S, Ferrera M, Pierantozzi GM, Cucini R, Della Valle G, Carrara P, De Vita A, di Bona A, Torelli P, Catone D, Panaccione G, Canepa M, Bisio F. Quantitative Ultrafast Electron-Temperature Dynamics in Photo-Excited Au Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100050. [PMID: 34061425 DOI: 10.1002/smll.202100050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 04/16/2021] [Indexed: 06/12/2023]
Abstract
The femtosecond evolution of the electronic temperature of laser-excited gold nanoparticles is measured, by means of ultrafast time-resolved photoemission spectroscopy induced by extreme-ultraviolet radiation pulses. The temperature of the electron gas is deduced by recording and fitting high-resolution photo emission spectra around the Fermi edge of gold nanoparticles providing a direct, unambiguous picture of the ultrafast electron-gas dynamics. These results will be instrumental to the refinement of existing models of femtosecond processes in laterally-confined and bulk condensed-matter systems, and for understanding more deeply the role of hot electrons in technological applications.
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Affiliation(s)
- Maria Sygletou
- OptMatLab, Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146, Genova, Italy
| | | | - Marzia Ferrera
- OptMatLab, Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146, Genova, Italy
| | - Gian Marco Pierantozzi
- Istituto Officina dei Materiali-CNR, Laboratorio TASC, Area Science Park, S.S. 14, Km 163.5, Trieste, I-34149, Italy
| | - Riccardo Cucini
- Istituto Officina dei Materiali-CNR, Laboratorio TASC, Area Science Park, S.S. 14, Km 163.5, Trieste, I-34149, Italy
| | - Giuseppe Della Valle
- Dipartimento di Fisica, IFN-CNR, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133, Milano, Italy
| | - Pietro Carrara
- Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, Milano, Italy
| | - Alessandro De Vita
- Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, Milano, Italy
| | | | - Piero Torelli
- Istituto Officina dei Materiali-CNR, Laboratorio TASC, Area Science Park, S.S. 14, Km 163.5, Trieste, I-34149, Italy
| | - Daniele Catone
- Istituto di Struttura della Materia - CNR (ISM-CNR), EuroFEL Support Laboratory (EFSL), Via del Fosso del Cavaliere, 100, I-00133, Rome, Italy
| | - Giancarlo Panaccione
- Istituto Officina dei Materiali-CNR, Laboratorio TASC, Area Science Park, S.S. 14, Km 163.5, Trieste, I-34149, Italy
| | - Maurizio Canepa
- OptMatLab, Dipartimento di Fisica, Università di Genova, via Dodecaneso 33, I-16146, Genova, Italy
| | - Francesco Bisio
- CNR-SPIN Istituto Superconduttori Materiali Innovativi e Dispositivi, C.so Perrone 24, I-16152, Genova, Italy
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Salajkova S, Havel F, Sramek M, Novotny F, Malinak D, Dolezal R, Prchal L, Benkova M, Soukup O, Musilek K, Kuca K, Bartek J, Proska J, Zarska M, Hodny Z. The Effect of Chemical Structure of OEG Ligand Shells with Quaternary Ammonium Moiety on the Colloidal Stabilization, Cellular Uptake and Photothermal Stability of Gold Nanorods. Int J Nanomedicine 2021; 16:3407-3427. [PMID: 34040371 PMCID: PMC8140906 DOI: 10.2147/ijn.s304953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/17/2021] [Indexed: 11/24/2022] Open
Abstract
PURPOSE Plasmonic photothermal cancer therapy by gold nanorods (GNRs) emerges as a promising tool for cancer treatment. The goal of this study was to design cationic oligoethylene glycol (OEG) compounds varying in hydrophobicity and molecular electrostatic potential as ligand shells of GNRs. Three series of ligands with different length of OEG chain (ethylene glycol units = 3, 4, 5) and variants of quaternary ammonium salts (QAS) as terminal functional group were synthesized and compared to a prototypical quaternary ammonium ligand with alkyl chain - (16-mercaptohexadecyl)trimethylammonium bromide (MTAB). METHODS Step-by-step research approach starting with the preparation of compounds characterized by NMR and HRMS spectra, GNRs ligand exchange evaluation through characterization of cytotoxicity and GNRs cellular uptake was used. A method quantifying the reshaping of GNRs was applied to determine the effect of ligand structure on the heat transport from GNRs under fs-laser irradiation. RESULTS Fourteen out of 18 synthesized OEG compounds successfully stabilized GNRs in the water. The colloidal stability of prepared GNRs in the cell culture medium decreased with the number of OEG units. In contrast, the cellular uptake of OEG+GNRs by HeLa cells increased with the length of OEG chain while the structure of the QAS group showed a minor role. Compared to MTAB, more hydrophilic OEG compounds exhibited nearly two order of magnitude lower cytotoxicity in free state and provided efficient cellular uptake of GNRs close to the level of MTAB. Regarding photothermal properties, OEG compounds evoked the photothermal reshaping of GNRs at lower peak fluence (14.8 mJ/cm2) of femtosecond laser irradiation than the alkanethiol MTAB. CONCLUSION OEG+GNRs appear to be optimal for clinical applications with systemic administration of NPs not-requiring irradiation at high laser intensity such as drug delivery and photothermal therapy inducing apoptosis.
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Affiliation(s)
- Sarka Salajkova
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Filip Havel
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
- Department of Physical Electronics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech Republic
| | - Michal Sramek
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Filip Novotny
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
- Center for Advanced Functional Nanorobots, Department of Inorganic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic
| | - David Malinak
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Rafael Dolezal
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Lukas Prchal
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Marketa Benkova
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Ondrej Soukup
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Kamil Musilek
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Kamil Kuca
- Biomedical Research Center, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, Czech Republic
| | - Jiri Bartek
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
- Genome Integrity Unit, Danish Cancer Society Research Center, Copenhagen, Denmark
- Department of Medical Biochemistry and Biophysics, Science for Life Laboratory, Division of Genome Biology, Karolinska Institute, Stockholm, Sweden
| | - Jan Proska
- Department of Physical Electronics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech Republic
| | - Monika Zarska
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Zdenek Hodny
- Department of Genome Integrity, Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
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Campi G, Suber L, Righi G, Primitivo L, De Angelis M, Caschera D, Pilloni L, Del Giudice A, Palma A, Satta M, Fortunelli A, Sementa L. Design of a fluorescent and clickable Ag 38(SRN 3) 24 nanocluster platform: synthesis, modeling and self-assembling. NANOSCALE ADVANCES 2021; 3:2948-2960. [PMID: 36134198 PMCID: PMC9418538 DOI: 10.1039/d1na00090j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 04/07/2021] [Indexed: 06/16/2023]
Abstract
Fluorescent atomically precise Ag38(11-azido-2-ol-undecane-thiolate)24 nanoclusters are easily prepared using sodium ascorbate as a "green" reducer and are extensively characterized by way of elemental analyses, ATR-FTIR, XRD, SAXS, UV-vis, fluorescence spectroscopies, and theoretical modeling. The fluorescence and the atomically determined stoichiometry and structure, the facile and environmentally green synthesis, together with the novel presence of terminal azido groups in the ligands which opens the way to "click"-binding a wide set of molecular species, make Ag38(11-azido-2-ol-undecane-thiolate)24 nanoclusters uniquely appealing systems for biosensing, recognition and functionalization in biomedicine applications and in catalysis.
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Affiliation(s)
- Gaetano Campi
- CNR-Istituto di Cristallografia Via Salaria km 29,300-00015 Monterotondo Scalo Rome Italy
| | - Lorenza Suber
- CNR-Istituto di Struttura della Materia Via Salaria km 29,300-00015 Monterotondo Scalo Rome Italy
| | - Giuliana Righi
- CNR-IBPM-c/o Dip. Chimica, Sapienza Università di Roma p.le A. Moro 5 00185 Rome Italy
| | - Ludovica Primitivo
- CNR-IBPM-c/o Dip. Chimica, Sapienza Università di Roma p.le A. Moro 5 00185 Rome Italy
- Dip. Chimica, Sapienza Università di Roma p.le A. Moro 5 00185 Rome Italy
| | - Martina De Angelis
- CNR-IBPM-c/o Dip. Chimica, Sapienza Università di Roma p.le A. Moro 5 00185 Rome Italy
- Dip. Chimica, Sapienza Università di Roma p.le A. Moro 5 00185 Rome Italy
| | - Daniela Caschera
- CNR-Istituto per lo Studio dei Materiali Nanostrutturati Via Salaria km 29,300-00015 Monterotondo Scalo Rome Italy
| | - Luciano Pilloni
- ENEA SSPT-PROMAS-MATPRO, Materials Technology Division, Casaccia Research Centre 00123 Rome Italy
| | | | - Amedeo Palma
- CNR-Istituto di Struttura della Materia Via Salaria km 29,300-00015 Monterotondo Scalo Rome Italy
| | - Mauro Satta
- CNR-Istituto per lo Studio dei Materiali Nanostrutturati Via Salaria km 29,300-00015 Monterotondo Scalo Rome Italy
| | - Alessandro Fortunelli
- CNR-Istituto di Chimica dei Composti Organometallici Via G. Moruzzi 1 56127 Pisa Italy
| | - Luca Sementa
- CNR-Istituto per i Processi Chimico Fisici Via G. Moruzzi 1 56127 Pisa Italy
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Yu H, Zhao W, Ren L, Wang H, Guo P, Yang X, Ye Q, Shchukin D, Du Y, Dou S, Wang H. Laser-Generated Supranano Liquid Metal as Efficient Electron Mediator in Hybrid Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001571. [PMID: 32643839 DOI: 10.1002/adma.202001571] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 06/11/2020] [Indexed: 06/11/2023]
Abstract
Creating colloids of liquid metal with tailored dimensions has been of technical significance in nano-electronics while a challenge remains for generating supranano (<10 nm) liquid metal to unravel the mystery of their unconventional functionalities. Present study pioneers the technology of pulsed laser irradiation in liquid from a solid target to liquid, and yields liquid ternary nano-alloys that are laborious to obtain via wet-chemistry synthesis. Herein, the significant role of the supranano liquid metal on mediating the electrons at the grain boundaries of perovskite films, which are of significance to influence the carriers recombination and hysteresis in perovskite solar cells, is revealed. Such embedding of supranano liquid metal in perovskite films leads to a cesium-based ternary perovskite solar cell with stabilized power output of 21.32% at maximum power point tracing. This study can pave a new way of synthesizing multinary supranano alloys for advanced optoelectronic applications.
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Affiliation(s)
- Huiwu Yu
- State Key Laboratory of Solidification Processing Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, 710072, P. R. China
- School of Physics, Northwest University, Xi'an, 710127, P. R. China
| | - Wenhao Zhao
- State Key Laboratory of Solidification Processing Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, 710072, P. R. China
| | - Long Ren
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW, 2500, Australia
| | - Hongyue Wang
- State Key Laboratory of Solidification Processing Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, 710072, P. R. China
| | - Pengfei Guo
- State Key Laboratory of Solidification Processing Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, 710072, P. R. China
| | - Xiaokun Yang
- State Key Laboratory of Solidification Processing Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, 710072, P. R. China
| | - Qian Ye
- State Key Laboratory of Solidification Processing Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, 710072, P. R. China
| | - Dmitry Shchukin
- Stephenson Institute for Renewable Energy, University of Liverpool, Liverpool, L69 7ZF, UK
- Department of Physical and Colloid Chemistry, Gubkin University, 65/1 Leninsky Prospect, Moscow, 19991, Russia
| | - Yi Du
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW, 2500, Australia
- BUAA-UOW Joint Research Centre and School of Physics, Beihang University, Beijing, 100191, P. R. China
| | - Shixue Dou
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW, 2500, Australia
- BUAA-UOW Joint Research Centre and School of Physics, Beihang University, Beijing, 100191, P. R. China
| | - Hongqiang Wang
- State Key Laboratory of Solidification Processing Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, 710072, P. R. China
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Fiorati A, Bellingeri A, Punta C, Corsi I, Venditti I. Silver Nanoparticles for Water Pollution Monitoring and Treatments: Ecosafety Challenge and Cellulose-Based Hybrids Solution. Polymers (Basel) 2020; 12:E1635. [PMID: 32717864 PMCID: PMC7465245 DOI: 10.3390/polym12081635] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/16/2020] [Accepted: 07/20/2020] [Indexed: 12/26/2022] Open
Abstract
Silver nanoparticles (AgNPs) are widely used as engineered nanomaterials (ENMs) in many advanced nanotechnologies, due to their versatile, easy and cheap preparations combined with peculiar chemical-physical properties. Their increased production and integration in environmental applications including water treatment raise concerns for their impact on humans and the environment. An eco-design strategy that makes it possible to combine the best material performances with no risk for the natural ecosystems and living beings has been recently proposed. This review envisages potential hybrid solutions of AgNPs for water pollution monitoring and remediation to satisfy their successful, environmentally safe (ecosafe) application. Being extremely efficient in pollutants sensing and degradation, their ecosafe application can be achieved in combination with polymeric-based materials, especially with cellulose, by following an eco-design approach. In fact, (AgNPs)-cellulose hybrids have the double advantage of being easily produced using recycled material, with low costs and possible reuse, and of being ecosafe, if properly designed. An updated view of the use and prospects of these advanced hybrids AgNP-based materials is provided, which will surely speed their environmental application with consequent significant economic and environmental impact.
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Affiliation(s)
- Andrea Fiorati
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta” and INSTM Local Unit, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (A.F.); (C.P.)
| | - Arianna Bellingeri
- Department of Physical, Earth and Environmental Sciences and INSTM Local Unit, University of Siena, 53100 Siena, Italy; (A.B.); (I.C.)
| | - Carlo Punta
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta” and INSTM Local Unit, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (A.F.); (C.P.)
| | - Ilaria Corsi
- Department of Physical, Earth and Environmental Sciences and INSTM Local Unit, University of Siena, 53100 Siena, Italy; (A.B.); (I.C.)
| | - Iole Venditti
- Department of Sciences, Roma Tre University of Rome, via della Vasca Navale 79, 00146 Rome, Italy
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Dong S, Chen X, Yang H, Tang X, Chen J, Lin X, Peng Y. Visualization photofragmentation-induced rhodamine B release from gold nanorod delivery system by combination two-photon luminescence imaging with correlation spectroscopy. JOURNAL OF BIOPHOTONICS 2020; 13:e201960103. [PMID: 31919964 DOI: 10.1002/jbio.201960103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/25/2019] [Accepted: 12/27/2019] [Indexed: 06/10/2023]
Abstract
Plasmon-enhanced gold nanorod (AuNR) with high photothermal conversion efficiency is a promising light-controllable nanodrug delivery system for cancer therapy. Understanding the mechanism for the light-controllable drug release of AuNR delivery systems is important for the development of nanomedicine. In this study, the rhodamine B (RB) released from AuNR-RB nanodelivery system was quantitated and visualized by using two-photon luminescence (TPL) imaging combined with correlation spectroscopy. The photofragmentation of AuNR induced by femtosecond pulsed laser was revealed by TPL correlation spectroscopy when the laser energy was above the thermal damage threshold of AuNR, and the RB released from this nanodrug delivery system was visualized by TPL imaging. Furthermore, the photofragmentation-induced release of RB from AuNR-RB nanodelivery system was visualized in living MCF-7 breast cancer cells by TPL imaging combined with correlation spectroscopy. These results provided a novel optical approach to quantify the release of drugs from gold nanocarriers in complex biological media.
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Affiliation(s)
- Shiqing Dong
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Xiuqin Chen
- Fujian Provincial Key Laboratory of Polymer Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Normal University, Fuzhou, China
| | - Hongqin Yang
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Xiaoqiong Tang
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Jianling Chen
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
| | - Xiu Lin
- Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University, Fuzhou, China
| | - Yiru Peng
- Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou, China
- Fujian Provincial Key Laboratory of Polymer Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Normal University, Fuzhou, China
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Catone D, Di Mario L, Martelli F, O'Keeffe P, Paladini A, Stefano Pelli Cresi J, Sivan AK, Tian L, Toschi F, Turchini S. Ultrafast optical spectroscopy of semiconducting and plasmonic nanostructures and their hybrids. NANOTECHNOLOGY 2020; 32:025703. [PMID: 32937606 DOI: 10.1088/1361-6528/abb907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The knowledge of the carrier dynamics in nanostructures is of fundamental importance for the development of (opto)electronic devices. This is true for semiconducting nanostructures as well as for plasmonic nanoparticles (NPs). Indeed, improvement of photocatalytic efficiencies by combining semiconductor and plasmonic nanostructures is one of the reasons why their ultrafast dynamics are intensively studied. In this work, we will review our activity on ultrafast spectroscopy in nanostructures carried out in the recently established EuroFEL Support Laboratory. We have investigated the dynamical plasmonic responses of metal NPs both in solution and in 2D and 3D arrays on surfaces, with particular attention being paid to the effects of the NP shape and to the conversion of absorbed light into heat on a nano-localized scale. We will summarize the results obtained on the carrier dynamics in nanostructured perovskites with emphasis on the hot-carrier dynamics and in semiconductor nanosystems such as ZnSe and Si nanowires, with particular attention to the band-gap bleaching dynamics. Subsequently, the study of semiconductor-metal NP hybrids, such as CeO2-Ag NPs, ZnSe-Ag NPs and ZnSe-Au NPs, allows the discussion of interaction mechanisms such as charge carrier transfer and Förster interaction. Finally, we assess an alternative method for the sensitization of wide band gap semiconductors to visible light by discussing the relationship between the carrier dynamics of TiO2 NPs and V-doped TiO2 NPs and their catalytic properties.
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Affiliation(s)
- Daniele Catone
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 100 Via del Fosso del Cavaliere, 00133 Rome, Italy
| | - Lorenzo Di Mario
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 100 Via del Fosso del Cavaliere, 00133 Rome, Italy
| | - Faustino Martelli
- CNR-IMM, Area della Ricerca di Roma Tor Vergata, 100 Via del Fosso del Cavaliere, 00133 Rome, Italy
| | - Patrick O'Keeffe
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 00015 Monterotondo Scalo, Italy
| | - Alessandra Paladini
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 00015 Monterotondo Scalo, Italy
| | - Jacopo Stefano Pelli Cresi
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 00015 Monterotondo Scalo, Italy
| | - Aswathi K Sivan
- CNR-IMM, Area della Ricerca di Roma Tor Vergata, 100 Via del Fosso del Cavaliere, 00133 Rome, Italy
| | - Lin Tian
- CNR-IMM, Area della Ricerca di Roma Tor Vergata, 100 Via del Fosso del Cavaliere, 00133 Rome, Italy
| | - Francesco Toschi
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 00015 Monterotondo Scalo, Italy
| | - Stefano Turchini
- Istituto di Struttura della Materia-CNR (ISM-CNR), Division of Ultrafast Processes in Materials (FLASHit), 100 Via del Fosso del Cavaliere, 00133 Rome, Italy
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9
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Voss JM, Olshin PK, Charbonnier R, Drabbels M, Lorenz UJ. In Situ Observation of Coulomb Fission of Individual Plasmonic Nanoparticles. ACS NANO 2019; 13:12445-12451. [PMID: 31536329 DOI: 10.1021/acsnano.9b06664] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Reshaping plasmonic nanoparticles with laser pulses has been extensively researched as a tool for tuning their properties. However, in the absence of direct observations of the processes involved, important mechanistic details have remained elusive. Here, we present an in situ electron microscopy study of one such process that involves Coulomb fission of plasmonic nanoparticles under femtosecond laser irradiation. We observe that gold nanoparticles encapsulated in a silica shell fission by emitting progeny droplets comprised of about 10-500 atoms, with ejection preferentially occurring along the laser polarization direction. Under continued irradiation, the emitted droplets coalesce into a second core within the silica shell, and the system evolves into a dual-core particle. Our findings are consistent with a mechanism in which electrons are preferentially emitted from the gold core along the laser polarization direction. The resulting anisotropic charge distribution in the silica shell then determines the direction in which progeny droplets are ejected. In addition to yielding insights into the mechanism of Coulomb fission in plasmonic nanoparticles, our experiments point toward a facile method for forming surfaces decorated with aligned dual-gold-core silica shell particles.
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Affiliation(s)
- Jonathan M Voss
- Laboratory of Molecular Nanodynamics , École Polytechnique Fédérale de Lausanne , 1015 Lausanne , Switzerland
| | - Pavel K Olshin
- Laboratory of Molecular Nanodynamics , École Polytechnique Fédérale de Lausanne , 1015 Lausanne , Switzerland
| | - Romain Charbonnier
- Laboratory of Molecular Nanodynamics , École Polytechnique Fédérale de Lausanne , 1015 Lausanne , Switzerland
| | - Marcel Drabbels
- Laboratory of Molecular Nanodynamics , École Polytechnique Fédérale de Lausanne , 1015 Lausanne , Switzerland
| | - Ulrich J Lorenz
- Laboratory of Molecular Nanodynamics , École Polytechnique Fédérale de Lausanne , 1015 Lausanne , Switzerland
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Gold Nanoparticles and Nanorods in Nuclear Medicine: A Mini Review. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9163232] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In the last decade, many innovative nanodrugs have been developed, as well as many nanoradiocompounds that show amazing features in nuclear imaging and/or radiometabolic therapy. Their potential uses offer a wide range of possibilities. It can be possible to develop nondimensional systems of existing radiopharmaceuticals or build engineered systems that combine a nanoparticle with the radiopharmaceutical, a tracer, and a target molecule, and still develop selective nanodetection systems. This review focuses on recent advances regarding the use of gold nanoparticles and nanorods in nuclear medicine. The up-to-date advancements will be shown concerning preparations with special attention on the dimensions and functionalizations that are most used to attain an enhanced performance of gold engineered nanomaterials. Many ideas are offered regarding recent in vitro and in vivo studies. Finally, the recent clinical trials and applications are discussed.
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O'Keeffe P, Catone D, Paladini A, Toschi F, Turchini S, Avaldi L, Martelli F, Agresti A, Pescetelli S, Del Rio Castillo AE, Bonaccorso F, Di Carlo A. Graphene-Induced Improvements of Perovskite Solar Cell Stability: Effects on Hot-Carriers. NANO LETTERS 2019; 19:684-691. [PMID: 30669832 DOI: 10.1021/acs.nanolett.8b03685] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Hot-carriers, that is, charge carriers with an effective temperature higher than that of the lattice, may contribute to the high power conversion efficiency (PCE) shown by perovskite-based solar cells (PSCs), which are now competitive with silicon solar cells. Hot-carriers lose their excess energy in very short times, typically in a few picoseconds after excitation. For this reason, the carrier dynamics occurring on this time scale are extremely important in determining the participation of hot-carriers in the photovoltaic process. However, the stability of PSCs over time still remains an issue that calls for a solution. In this work, we demonstrate that the insertion of graphene flakes into the mesoscopic TiO2 scaffold leads to stable values of carrier temperature. In PSCs aged over 1 week, we indeed observe that in the graphene-free perovskite cells the carrier temperature decreases by about 500 K from 1800 to 1300 K, while the graphene-containing cell shows a reduction of less than 200 K after the same aging time delay. The stability of the carrier temperature reflects the stability of the perovskite nanocrystals embedded in the mesoporous graphene-TiO2 layer. Our results, based on femtosecond transient absorption measurements, show that the insertion of graphene can be beneficial for the design of stable PSCs with the aim of exploiting the hot-carrier contribution to the PCE of the PSCs.
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Affiliation(s)
- P O'Keeffe
- CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit) , Area della Ricerca di Roma 1 , Monterotondo Scalo , Italy
| | - D Catone
- CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit) , Area della Ricerca di Roma Tor Vergata , Via del Fosso del Cavaliere 100 , 00133 Rome , Italy
| | - A Paladini
- CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit) , Area della Ricerca di Roma 1 , Monterotondo Scalo , Italy
| | - F Toschi
- CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit) , Area della Ricerca di Roma 1 , Monterotondo Scalo , Italy
| | - S Turchini
- CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit) , Area della Ricerca di Roma Tor Vergata , Via del Fosso del Cavaliere 100 , 00133 Rome , Italy
| | - L Avaldi
- CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit) , Area della Ricerca di Roma 1 , Monterotondo Scalo , Italy
| | - F Martelli
- CNR-IMM, Area della Ricerca di Roma Tor Vergata , 100 Via del Fosso del Cavaliere , 00133 Rome , Italy
| | - A Agresti
- CHOSE (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
| | - S Pescetelli
- CHOSE (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
| | - A E Del Rio Castillo
- Graphene Laboratories , IIT - Istituto Italiano di Tecnologia , Via Morego 30 , 16163 Genova , Italy
| | - F Bonaccorso
- Graphene Laboratories , IIT - Istituto Italiano di Tecnologia , Via Morego 30 , 16163 Genova , Italy
- BeDimensional Spa , Via Albisola 121 , 16163 Genova , Italy
| | - A Di Carlo
- CHOSE (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy
- LASE - Laboratory for Advanced Solar Energy , National University of Science and Technology MISiS , Leninsky Ave. 6 , 119049 Moscow , Russia
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