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Balafouti A, Pispas S. Hyperbranched Copolymers of Methacrylic Acid and Lauryl Methacrylate H-P(MAA-co-LMA): Synthetic Aspects and Interactions with Biorelevant Compounds. Pharmaceutics 2023; 15:pharmaceutics15041198. [PMID: 37111683 PMCID: PMC10140914 DOI: 10.3390/pharmaceutics15041198] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 04/05/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
The synthesis of novel copolymers using one-step reversible addition-fragmentation chain transfer (RAFT) copolymerization of biocompatible methacrylic acid (MAA), lauryl methacrylate (LMA), and difunctional ethylene glycol dimethacrylate (EGDMA) as a branching agent is reported. The obtained amphiphilic hyperbranched H-P(MAA-co-LMA) copolymers are molecularly characterized by size exclusion chromatography (SEC), FTIR, and 1H-NMR spectroscopy, and subsequently investigated in terms of their self-assembly behavior in aqueous media. The formation of nanoaggregates of varying size, mass, and homogeneity, depending on the copolymer composition and solution conditions such as concentration or pH variation, is demonstrated by light scattering and spectroscopic techniques. Furthermore, drug encapsulation properties are studied by incorporating the low bioavailability drug, curcumin, in the nano-aggregate hydrophobic domains, which can also act as a bioimaging agent. The interaction of polyelectrolyte MAA units with model proteins is described to examine protein complexation capacity relevant to enzyme immobilization strategies, as well as explore copolymer self-assembly in simulated physiological media. The results confirm that these copolymer nanosystems could provide competent biocarriers for imaging and drug or protein delivery/enzyme immobilization applications.
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Affiliation(s)
- Anastasia Balafouti
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635 Athens, Greece
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635 Athens, Greece
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2
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Du J, Liu X, Hou Z, Liu X, Yao J, Cheng X, Wang X, Tang R. Acid-sensitive polymeric prodrug micelles for achieving enhanced chemo-photodynamic therapy. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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3
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Customizing polyelectrolytes through hydrophobic grafting. Adv Colloid Interface Sci 2022; 306:102721. [DOI: 10.1016/j.cis.2022.102721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 06/10/2022] [Accepted: 06/10/2022] [Indexed: 11/22/2022]
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4
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Shibaev AV, Smirnova ME, Kessel DE, Bedin SA, Razumovskaya IV, Philippova OE. Remotely Self-Healable, Shapeable and pH-Sensitive Dual Cross-Linked Polysaccharide Hydrogels with Fast Response to Magnetic Field. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1271. [PMID: 34066084 PMCID: PMC8151316 DOI: 10.3390/nano11051271] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/07/2021] [Accepted: 05/09/2021] [Indexed: 11/25/2022]
Abstract
The development of actuators with remote control is important for the construction of devices for soft robotics. The present paper describes a responsive hydrogel of nontoxic, biocompatible, and biodegradable polymer carboxymethyl hydroxypropyl guar with dynamic covalent cross-links and embedded cobalt ferrite nanoparticles. The nanoparticles significantly enhance the mechanical properties of the gel, acting as additional multifunctional non-covalent linkages between the polymer chains. High magnetization of the cobalt ferrite nanoparticles provides to the gel a strong responsiveness to the magnetic field, even at rather small content of nanoparticles. It is demonstrated that labile cross-links in the polymer matrix impart to the hydrogel the ability of self-healing and reshaping as well as a fast response to the magnetic field. In addition, the gel shows pronounced pH sensitivity due to pH-cleavable cross-links. The possibility to use the multiresponsive gel as a magnetic-field-triggered actuator is demonstrated.
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Affiliation(s)
- Andrey V. Shibaev
- Physics Department, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.E.S.); (D.E.K.); (O.E.P.)
| | - Maria E. Smirnova
- Physics Department, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.E.S.); (D.E.K.); (O.E.P.)
| | - Darya E. Kessel
- Physics Department, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.E.S.); (D.E.K.); (O.E.P.)
| | - Sergey A. Bedin
- Institute of Physics, Technology and Informational Systems, Moscow Pedagogical State University, 119435 Moscow, Russia; (S.A.B.); (I.V.R.)
| | - Irina V. Razumovskaya
- Institute of Physics, Technology and Informational Systems, Moscow Pedagogical State University, 119435 Moscow, Russia; (S.A.B.); (I.V.R.)
| | - Olga E. Philippova
- Physics Department, Lomonosov Moscow State University, 119991 Moscow, Russia; (M.E.S.); (D.E.K.); (O.E.P.)
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5
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Zhang X, Dai Y. Recent development of brush polymers via polymerization of poly(ethylene glycol)-based macromonomers. Polym Chem 2019. [DOI: 10.1039/c9py00104b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Polymerization of poly(ethylene glycol)-based macromonomers is a facile and versatile synthetic method to generate well-defined brush polymers.
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Affiliation(s)
- Xiaojin Zhang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
| | - Yu Dai
- Engineering Research Center of Nano-Geomaterials of Ministry of Education
- Faculty of Materials Science and Chemistry
- China University of Geosciences
- Wuhan 430074
- China
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6
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Zhou X, Zhao K. Chain conformation of poly(acrylic acid)-graft-poly(ethylene oxide)-graft-dodecyl in solution: an anomalous counter-ions condensation. SOFT MATTER 2018; 14:1130-1141. [PMID: 29345709 DOI: 10.1039/c7sm01931a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A dielectric spectroscopy study on a polyelectrolyte in aqueous solutions, which contains hydrophobic groups in part of the side chains poly(acrylic acid)-graft-poly(ethylene oxide)-graft-dodecyl (PAA-g-PEO-g-dodecyl) is reported. A refined double layer polarization model was proposed to analyze the double dielectric relaxations in the dielectric spectra. Various electrical and structural parameters of the copolymers were obtained. Besides the crossover concentration, another turning point around 4 mg mL-1 was identified through the analysis of all the dielectrical parameters including dielectric increment, relaxation time and correlation length. According to the scaling relationship between the correlation length and concentration, a necklace-like structure was predicted. In addition, 4 mg mL-1 was proven to be the transition point between string-controlling with bead-controlling structure of the chains. In addition, the fraction of effective charges on the chains was illustrated by Ito's counter-ions fluctuation theory, as well as its linear dependence relationship with the zeta potential. Meanwhile, the counter-ions condensation behavior was consistent with the avalanche-like trend, which was predicted by theory for a hydrophobic polyelectrolyte with a necklace conformation. The results demonstrated that the electrostatic interactions were the main driving force of the necklace-like structure with pendant globules when the string-controlling structure was below 4 mg mL-1. While hydrophobic interactions are the main driving force of the structure of bead-controlling above 4 mg mL-1.
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Affiliation(s)
- Xinlu Zhou
- College of Chemistry, Beijing Normal University, Beijing 100875, China.
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7
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Liu W, Wang YM, Li YH, Cai SJ, Yin XB, He XW, Zhang YK. Fluorescent Imaging-Guided Chemotherapy-and-Photodynamic Dual Therapy with Nanoscale Porphyrin Metal-Organic Framework. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1603459. [PMID: 28244202 DOI: 10.1002/smll.201603459] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 12/16/2016] [Indexed: 06/06/2023]
Abstract
Imaging-guided therapy systems (IGTSs) are revolutionary techniques used in cancer treatment due to their safety and efficiency. IGTSs should have tunable compositions for bioimaging, a suitable size and shape for biotransfer, sufficient channels and/or pores for drug loading, and intrinsic biocompatibility. Here, a biocompatible nanoscale zirconium-porphyrin metal-organic framework (NPMOF)-based IGTS that is prepared using a microemulsion strategy and carefully tuned reaction conditions is reported. A high content of porphyrin (59.8%) allows the achievement of efficient fluorescent imaging and photodynamic therapy (PDT). The 1D channel of the Kagome topology of NPMOFs provides a 109% doxorubicin loading and pH-response smart release for chemotherapy. The fluorescence guiding of the chemotherapy-and-PDT dual system is confirmed by the concentration of NPMOFs at cancer sites after irradiation with a laser and doxorubicin release, while low toxicity is observed in normal tissues. NPMOFs are established as a promising platform for the early diagnosis of cancer and initial therapy.
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Affiliation(s)
- Wei Liu
- State Key Laboratory of Medicinal Chemical Biology and Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yong-Mei Wang
- State Key Laboratory of Medicinal Chemical Biology and Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yu-Hao Li
- Tianjin Key Laboratory of Tumor Microenvironment and Neurovascular Regulation, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Shi-Jiao Cai
- Tianjin Key Laboratory of Tumor Microenvironment and Neurovascular Regulation, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Xue-Bo Yin
- State Key Laboratory of Medicinal Chemical Biology and Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, 300071, China
| | - Xi-Wen He
- State Key Laboratory of Medicinal Chemical Biology and Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yu-Kui Zhang
- State Key Laboratory of Medicinal Chemical Biology and Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, 300071, China
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Iatridi Z, Vamvakidis K, Tsougos I, Vassiou K, Dendrinou-Samara C, Bokias G. Multifunctional Polymeric Platform of Magnetic Ferrite Colloidal Superparticles for Luminescence, Imaging, and Hyperthermia Applications. ACS APPLIED MATERIALS & INTERFACES 2016; 8:35059-35070. [PMID: 27966875 DOI: 10.1021/acsami.6b13161] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Adequately designed multiresponsive water-soluble graft copolymers were used to serve as a multifunctional polymeric platform for the encapsulation and transfer in aqueous media of hydrophobic magnetic nanoparticles (MNPs). The backbone of the graft copolymers was composed of hydrophilic sodium methacrylate units, hydrophobic dodecyl methacrylate units, and luminescent quinoline-based units, while either the homopolymer poly(N-isopropylacrylamide) or a poly(N,N-dimethylacrylamide-co-N-isopropylacrylamide) copolymer was used as thermosensitive pendent side chains. The polymeric platform forms micellar-type assemblies in aqueous solution, and exhibits pH-responsive luminescent properties and a lower critical solution temperature behavior in water. Depending on the design of the side chains, the cloud point temperatures were determined at 38 and 42 °C, close or slightly above body temperature (37 °C). Above the critical micelle concentration (CMC), both graft copolymers can effectively stabilize in aqueous media as magnetic colloidal superparticles (MSPs), oleylamine-coated MnFe2O4 MNPs, as well as 1:1 mixture of oleylamine-coated MnFe2O4 and CoFe2O4 MNPs. When CoFe2O4 particles were mixed with MnFeO4 in equal amounts, the specific loss power increased significantly, while an opposite trend was observed in the magnetic resonance imaging (MRI) studies, probably due to the anisotropy of cobalt. As a consequence, fine-tuning of the chemical structure of the copolymers and the composition of the MSPs can lead to materials that are able to act simultaneously as luminescent, hyperthermia, and contrast MRI agents.
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Affiliation(s)
| | - Kosmas Vamvakidis
- Department of Chemistry, Aristotle University of Thessaloniki , GR-54124 Thessaloniki, Greece
| | - Ioannis Tsougos
- Department of Medical Physics, University Hospital of Larissa, University of Thessaly, Biopolis , GR-41110 Larisa, Greece
| | - Katerina Vassiou
- Department of Radiology, University Hospital of Larissa, University of Thessaly, Biopolis , GR-41110 Larisa, Greece
| | | | - Georgios Bokias
- Department of Chemistry, University of Patras , GR-26504 Patras, Greece
- FORTH/ICE-HT , Stadiou Street, P.O. Box 1414, GR-26504 Rio-Patras, Greece
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9
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Davis K, Cole B, Ghelardini M, Powell BA, Mefford OT. Quantitative Measurement of Ligand Exchange with Small-Molecule Ligands on Iron Oxide Nanoparticles via Radioanalytical Techniques. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:13716-13727. [PMID: 27966977 DOI: 10.1021/acs.langmuir.6b03644] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Ligand exchange on the surface of hydrophobic iron oxide nanoparticles is a common method for controlling surface chemistry for a desired application. Furthermore, ligand exchange with small-molecule ligands may be necessary to obtain particles with a specific size or functionality. Understanding to what extent ligand exchange occurs and what factors affect it is important for the optimization of this critical procedure. However, quantifying the amount of exchange may be difficult because of the limitations of commonly used characterization techniques. Therefore, we utilized a radiotracer technique to track the exchange of a radiolabeled 14C-oleic acid ligand with hydrophilic small-molecule ligands on the surface of iron oxide nanoparticles. Iron oxide nanoparticles functionalized with 14C-oleic acid were modified with small-molecule ligands with terminal functional groups including catechols, phosphonates, sulfonates, thiols, carboxylic acids, and silanes. These moieties were selected because they represent the most commonly used ligands for this procedure. The effectiveness of these molecules was compared using both procedures widely found in the literature and using a standardized procedure. After ligand exchange, the nanoparticles were analyzed using liquid scintillation counting (LSC) and inductively coupled plasma-mass spectrometry. The labeled and unlabeled particles were further characterized by transmission electron microscopy (TEM) and dynamic light scattering (DLS) to determine the particle size, hydrodynamic diameter, and zeta potential. The unlabeled particles were characterized via attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) and vibrating sample magnetometry (VSM) to confirm the presence of the small molecules on the particles and verify the magnetic properties, respectively. Radioanalytical determination of 14C-oleic acid was used to calculate the total amount of oleic acid remaining on the surface of the particles after ligand exchange. The results revealed that the ligand-exchange reactions performed using widely cited procedures did not go to completion. Residual oleic acid remained on the particles after these reactions and the reactions using a standardized protocol. A comparison of the ligand-exchange procedures indicated that the binding moiety, multidenticity, reaction time, temperature, and presence of a catalyst impacted the extent of exchange. Quantification of the oleic acid remaining after ligand exchange revealed a binding hierarchy in which catechol-derived anchor groups displace the most oleic acid on the surface of the nanoparticles and the thiol group displaces the least amount of oleic acid. Thorough characterization of ligand exchange is required to develop nanoparticles suitable for their intended application.
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Affiliation(s)
| | - Brian Cole
- Department of Chemistry, Henderson State University , Arkadelphia, Arkansas 71999, United States
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10
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Menelaou M, Iatridi Z, Tsougos I, Vasiou K, Dendrinou-Samara C, Bokias G. Magnetic colloidal superparticles of Co, Mn and Ni ferrite featured with comb-type and/or linear amphiphilic polyelectrolytes; NMR and MRI relaxometry. Dalton Trans 2015; 44:10980-90. [DOI: 10.1039/c5dt00372e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Hydrophobically-modified magnetic superparticles (MSPs) of MFe2O4 NPs were synthesized in the presence of amphiphilic polymers with different architectures and evaluated through NMR and MRI relaxivity measurements.
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Affiliation(s)
- Melita Menelaou
- Department of Chemistry
- Aristotle University of Thessaloniki
- GR-54124 Thessaloniki
- Greece
| | | | - Ioannis Tsougos
- Department of Medical Physics
- University Hospital of Larissa
- University of Thessaly
- GR-41110 Larisa
- Greece
| | - Katerina Vasiou
- Department of Radiology
- University Hospital of Larissa
- University of Thessaly
- GR-41110 Larisa
- Greece
| | | | - Georgios Bokias
- Department of Chemistry
- University of Patras
- GR-26504 Patras
- Greece
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11
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Georgiadou V, Dendrinou-Samara C. Impact of the Presence of Octadecylamine on the Properties of Hydrothermally Prepared CoFe2O4Nanoparticles. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402323] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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12
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Kharisov BI, Dias HVR, Kharissova OV, Vázquez A, Peña Y, Gómez I. Solubilization, dispersion and stabilization of magnetic nanoparticles in water and non-aqueous solvents: recent trends. RSC Adv 2014. [DOI: 10.1039/c4ra06902a] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Solubilization and stabilization techniques for magnetic nanoparticles in water and in non-aqueous solvents are reviewed.
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Affiliation(s)
| | - H. V. Rasika Dias
- Department of Chemistry and Biochemistry
- The University of Texas at Arlington
- Arlington, Texas 76019, USA
| | | | | | - Yolanda Peña
- Universidad Autónoma de Nuevo León
- Monterrey, Mexico
| | - Idalia Gómez
- Universidad Autónoma de Nuevo León
- Monterrey, Mexico
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13
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Vamvakidis K, Katsikini M, Sakellari D, Paloura EC, Kalogirou O, Dendrinou-Samara C. Reducing the inversion degree of MnFe2O4 nanoparticles through synthesis to enhance magnetization: evaluation of their 1H NMR relaxation and heating efficiency. Dalton Trans 2014; 43:12754-65. [DOI: 10.1039/c4dt00162a] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
MnFe2O4 nanoparticles of low inversion degree present optimized magnetization with high (T2) relaxation (345.5 s−1 mM−1) and heating efficiency (286 W g−1).
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Affiliation(s)
- K. Vamvakidis
- Department of Chemistry
- Aristotle University of Thessaloniki
- 54124 Thessaloniki, Greece
| | - M. Katsikini
- Department of Physics
- Aristotle University of Thessaloniki
- 54124 Thessaloniki, Greece
| | - D. Sakellari
- Department of Physics
- Aristotle University of Thessaloniki
- 54124 Thessaloniki, Greece
| | - E. C. Paloura
- Department of Physics
- Aristotle University of Thessaloniki
- 54124 Thessaloniki, Greece
| | - O. Kalogirou
- Department of Physics
- Aristotle University of Thessaloniki
- 54124 Thessaloniki, Greece
| | - C. Dendrinou-Samara
- Department of Chemistry
- Aristotle University of Thessaloniki
- 54124 Thessaloniki, Greece
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