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Houshmand B, Rezaei Esfahroodi Z, Behnamghader A, Mohammadreza S, Azizi A, Ramezani K. Evaluation of UV photofunctionalization effect on ultrastructural properties of SLA titanium disks: An in vitro study. JOURNAL OF ADVANCED PERIODONTOLOGY & IMPLANT DENTISTRY 2023; 15:117-122. [PMID: 38357335 PMCID: PMC10862043 DOI: 10.34172/japid.2023.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 08/26/2023] [Indexed: 02/16/2024]
Abstract
Background The success rate of dental implants diminishes over time; the lack of osseointegration and infection are the major causes of most implant failures. One of the effective methods to improve the surface properties is to irradiate ultraviolet (UV) light. This study investigated the effect of UV photofunctionalization on the ultrasuperficial properties of sandblasted, large-grit, acid-etched (SLA) titanium discs. Methods In this in vitro study, 24 sandblasted and acid-etched titanium discs, with a lifespan of more than four weeks, were categorized into three groups (n=8): control, ultraviolet C (UVC), and ultraviolet B (UVB). Then, they were exposed to a UV light source for 48 hours at a 1-cm distance. In addition to measuring the contact angle between the liquid and the disc surface in each of the three groups, the atomic concentrations of carbon, oxygen, and nitrogen atoms were measured at three different sites on each disc. One-way ANOVA and post hoc Tukey tests were used to analyze data. Results The mean concentration of carbon atoms significantly differed in the control, UVC, and UVB groups (P<0.001). The mean concentrations of nitrogen atoms differed significantly between the three groups (P<0.001). However, the mean concentrations of oxygen atoms were not significantly different between the three groups. In examining the contact angle, wettability was higher in the UVC group than in the UVB group and higher in the UBV group than in the control group. Conclusion Photofunctionalization with UV light significantly decreased carbon and nitrogen concentrations on the surface of titanium implants, indicating that the implant's superficial hydrocarbons were eliminated. It was observed that UVC photofunctionalization was more effective than UVB photofunctionalization in reducing superficial contamination and improving wettability.
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Affiliation(s)
- Behzad Houshmand
- Department of Periodontics, Faculty of Dentistry,Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zeinab Rezaei Esfahroodi
- Department of Periodontics, Faculty of Dentistry,Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Sadegh Mohammadreza
- Department of Periodontics, Faculty of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Aytan Azizi
- Department of Endodontics, Faculty of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Kave Ramezani
- Department of Periodontics, Faculty of Dentistry,Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Carraro G, Smerieri M, Passaglia S, Bracco G, Vattuone L, Rocca M, Cossaro A, Verdini A, Floreano L, Savio L. Adsorption of glutamic acid on clean and hydroxylated rutile TiO 2(110): an XPS and NEXAFS investigation. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:274001. [PMID: 35354128 DOI: 10.1088/1361-648x/ac62a6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
Due to its biocompatibility, TiO2is a relevant material for the study of bio-interfaces. Its electronic and chemical properties are influenced by defects, which mainly consist of oxygen vacancies or adsorbed OH groups and which affect, consequently, also the interaction with biological molecules. Here we report on an x-ray photoemission spectroscopy and near edge adsorption fine structure study of glutamic acid (Glu) adsorption on the rutile TiO2(110) surface, either clean or partially hydroxylated. We show that Glu anchors to the surface through a carboxylate group and that the final adsorption state is influenced by the presence of hydroxyl groups on the surface prior to Glu deposition. Indeed, molecules adsorb both in the anionic and in the zwitterionic form, the former species being favored on the hydroxylated substrate.
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Affiliation(s)
- Giovanni Carraro
- IMEM-CNR, U.O.S. Genova, Via Dodecaneso 33, 16146 Genova, Italy
- Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - Marco Smerieri
- IMEM-CNR, U.O.S. Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | | | - Gianangelo Bracco
- IMEM-CNR, U.O.S. Genova, Via Dodecaneso 33, 16146 Genova, Italy
- Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - Luca Vattuone
- IMEM-CNR, U.O.S. Genova, Via Dodecaneso 33, 16146 Genova, Italy
- Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - Mario Rocca
- IMEM-CNR, U.O.S. Genova, Via Dodecaneso 33, 16146 Genova, Italy
- Dipartimento di Fisica, Università di Genova, Via Dodecaneso 33, 16146 Genova, Italy
| | - Albano Cossaro
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, 34127 Trieste, Italy
- CNR-IOM, Istituto Officina dei Materiali, 34149 Trieste, Italy
| | - Alberto Verdini
- CNR-IOM, Istituto Officina dei Materiali, 34149 Trieste, Italy
| | - Luca Floreano
- CNR-IOM, Istituto Officina dei Materiali, 34149 Trieste, Italy
| | - Letizia Savio
- IMEM-CNR, U.O.S. Genova, Via Dodecaneso 33, 16146 Genova, Italy
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3
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Sai Phani Kumar V, Verma M, Deshpande PA. On interaction of arginine, cysteine and guanine with a nano-TiO 2 cluster. Comput Biol Chem 2020; 86:107236. [PMID: 32220810 DOI: 10.1016/j.compbiolchem.2020.107236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/03/2020] [Accepted: 02/15/2020] [Indexed: 01/17/2023]
Abstract
Nanoscopic properties of TiO2 augmented with its physicochemical properties and biocompatibility make it a material interest in the biomedical field. Efficient methods to design of such materials require a thorough understanding of associated nano-bio interfaces. In the present study, density functional theory calculations were performed to study the interactions of arginine, cysteine and guanine with a nano-TiO2 cluster. Different configurations were sampled for the adsorption of arginine, cysteine and guanine to probe the nano-bio interface via the interaction of various functional groups present on biomolecules. Adsorption energies for arginine, cysteine and guanine were in a range of -25.0 to -57.6, -12.1 to -29.6 and -45.6 to -58.7 kcal/mol, respectively. From the change in adsorption energies and free energies, interaction of amino acids with carboxylic (COOH), thiol (SH) and amine (NH2) groups while the interaction of the nucleobase via O bonded to C and N of purine ring was found to be essential for thermodynamically stable and energetically favorable states. Density of states analysis also disclosed the prominent interactions of the biomolecules with the nano-TiO2 cluster. Decrease in band gaps on adsorption of the biomolecules was a pertinent phenomenon indicating the strong chemical interactions of the biomolecules with the nanoscopic TiO2 chosen for analysis in this study.
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Affiliation(s)
- V Sai Phani Kumar
- Quantum and Molecular Engineering Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India
| | - Manju Verma
- Quantum and Molecular Engineering Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India
| | - Parag A Deshpande
- Quantum and Molecular Engineering Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, West Bengal 721302, India.
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4
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Abdou JM, Seidel P, Sterrer M. Bonding and thermal stability of cysteine on single-crystalline iron oxide surfaces and Pt(111). J Chem Phys 2020; 152:064701. [DOI: 10.1063/1.5143416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
| | - Peter Seidel
- Institute of Physics, University of Graz, Universitätsplatz 5, A-8010 Graz, Austria
| | - Martin Sterrer
- Institute of Physics, University of Graz, Universitätsplatz 5, A-8010 Graz, Austria
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5
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Liu L, Li K, Chen X, Liang X, Zheng Y, Li L. Amino acid adsorption on anatase (101) surface at vacuum and aqueous solution: a density functional study. J Mol Model 2018; 24:107. [PMID: 29600436 DOI: 10.1007/s00894-018-3641-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 03/13/2018] [Indexed: 12/22/2022]
Abstract
The adsorption of 20 amino acids (AAs) on the (101) surface of anatase titanium dioxide (TiO2) has been investigated under the scheme of density functional theory. Through the analysis of adsorption geometries, amino group and side chains of AAs have been identified as the major side to adsorb on TiO2, while the carboxyl group prefers to stay outside to avoid the repulsion between negatively charged oxygen from TiO2 and AAs. On the surface, two-coordinated oxygen is the major site to stabilize AAs through O-H interactions. The above conclusion does not change when it is in the aqueous solution based on the calculations with AAs surrounded by explicit water molecules. The above knowledge is helpful in predicting how AAs and even peptides adsorb on inorganic materials. Graphical abstract The adsorption of 20 amino acids (AAs) on the (101) surface of anatase titanium dioxide (TiO2) has been investigated under the scheme of density functional theory.
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Affiliation(s)
- Liuxie Liu
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, 610068, China.,Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, 610065, China
| | - Kai Li
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, 610068, China
| | - Xiao Chen
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, 610068, China
| | - Xiaoqin Liang
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, 610068, China.
| | - Yan Zheng
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, 610068, China
| | - Laicai Li
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, 610068, China.
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Salles RCM, Coutinho LH, da Veiga AG, Sant’Anna MM, de Souza GGB. Surface damage in cystine, an amino acid dimer, induced by keV ions. J Chem Phys 2018; 148:045107. [DOI: 10.1063/1.5011816] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- R. C. M. Salles
- Instituto de Química, Universidade Federal do Rio de Janeiro, Cidade Universitária, Ilha do Fundão, 21941-909 Rio de Janeiro, RJ, Brazil
| | - L. H. Coutinho
- Instituto de Física, Universidade Federal do Rio de Janeiro, Cidade Universitária, Ilha do Fundão, 21941-972 Rio de Janeiro, RJ, Brazil
| | - A. G. da Veiga
- Instituto de Química, Universidade Federal do Rio de Janeiro, Cidade Universitária, Ilha do Fundão, 21941-909 Rio de Janeiro, RJ, Brazil
| | - M. M. Sant’Anna
- Instituto de Física, Universidade Federal do Rio de Janeiro, Cidade Universitária, Ilha do Fundão, 21941-972 Rio de Janeiro, RJ, Brazil
| | - G. G. B. de Souza
- Instituto de Química, Universidade Federal do Rio de Janeiro, Cidade Universitária, Ilha do Fundão, 21941-909 Rio de Janeiro, RJ, Brazil
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YazdanYar A, Aschauer U, Bowen P. Interaction of biologically relevant ions and organic molecules with titanium oxide (rutile) surfaces: A review on molecular dynamics studies. Colloids Surf B Biointerfaces 2017; 161:563-577. [PMID: 29149762 DOI: 10.1016/j.colsurfb.2017.11.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 09/22/2017] [Accepted: 11/01/2017] [Indexed: 01/06/2023]
Abstract
The surface of a biomaterial can play a major role in its biological fate since the surface is the primary pathway for its interaction with the body. As the natural response of the body to a foreign material is to encapsulate it with a fibrous material, the interactions between the body and the biomaterial are mediated by this fibrous layer. Initial interactions occur between the biomaterial surface, water, ionic species and organic molecules, which then mediate further interactions with body tissues. Surface engineering can influence these interactions and hence, improve the biocompatibility of the biomaterial. Therefore, both experimental and computational studies have been interested in phenomena happening at the solid-solution interface as their mechanisms and driving forces can point to new directions for biomaterial design and evaluation. In this review, we summarize the computational work on the interaction of titanium oxide surfaces (mainly rutile) with solvated ions and organic molecules by means of molecular dynamics, with a certain relevance to bioactivity testing protocols. The primary goal of this review is to present the current state of the art and draw attention to points where further investigations are required.
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Affiliation(s)
- Azade YazdanYar
- Department of Materials Science and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
| | - Ulrich Aschauer
- Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland
| | - Paul Bowen
- Department of Materials Science and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
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Barcaro G, Monti S, Sementa L, Carravetta V. Parametrization of a Reactive Force Field (ReaxFF) for Molecular Dynamics Simulations of Si Nanoparticles. J Chem Theory Comput 2017. [PMID: 28640604 DOI: 10.1021/acs.jctc.7b00445] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel computational approach, based on classical reactive molecular dynamics simulations (RMD) and quantum chemistry (QC) global energy optimizations, is proposed for modeling large Si nanoparticles. The force field parameters, which can describe bond breaking and formation, are derived by reproducing energetic and structural properties of a set of Si clusters increasing in size. These reference models are obtained through a new protocol based on a joint high temperature RMD/low temperature Basin Hopping QC search. The different procedures of estimating optimal force field parameters and their performance are discussed in detail.
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Affiliation(s)
- Giovanni Barcaro
- CNR-IPCF, Institute of Chemical and Physical Processes , via G. Moruzzi 1, I-56124 Pisa, Italy
| | - Susanna Monti
- CNR-ICCOM, Institute of Chemistry of Organometallic Compounds , via G. Moruzzi 1, I-56124 Pisa, Italy
| | - Luca Sementa
- CNR-IPCF, Institute of Chemical and Physical Processes , via G. Moruzzi 1, I-56124 Pisa, Italy
| | - Vincenzo Carravetta
- CNR-IPCF, Institute of Chemical and Physical Processes , via G. Moruzzi 1, I-56124 Pisa, Italy
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10
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Monti S, Carravetta V, Ågren H. Theoretical Study of the Adsorption Mechanism of Cystine on Au(110) in Aqueous Solution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:6134-6143. [PMID: 27671233 DOI: 10.1002/smll.201602275] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Revised: 08/16/2016] [Indexed: 06/06/2023]
Abstract
The adsorption and dynamics of cystine, which is the oxidized dimer of cysteine where the monomers are connected through a disulfide bond, on the Au(110) surface, in water solution, is characterized by means of classical molecular dynamics simulations based on a recently developed reactive force field (ReaxFF). The adopted computational procedure and the force field description are able to give a complete and reliable picture, in line with experiments, of the molecule behavior in solution and in close contact with the metal support. Many different aspects, which have never been explored computationally at this level of theory, are disclosed, namely, physisorption, chemisorption, disulfide bridge breaking/creation, and formation of staples. It is demonstrated that all these events are connected with the specific orientation and location of cystine on the substrate. Simulations in pure water reveal that the disulfide bridge is stable, whereas dissociation is observed on gold. This is favored at low coverage, whereas at high coverage both intact and dissociated forms can be observed depending on local arrangements. The computed photoemission spectra at different K-edges for the predicted adsorbate structures satisfactorily agree with the experimental measurements extracted from literature.
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Affiliation(s)
- Susanna Monti
- CNR-ICCOM, Institute of Chemistry of Organometallic Compounds, via G. Moruzzi 1, I-56124, Pisa, Italy
- Division of Theoretical Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology, SE-106 91, Stockholm, Sweden
| | - Vincenzo Carravetta
- CNR-IPCF, Institute of Chemical and Physical Processes, via G. Moruzzi 1, I-56124, Pisa, Italy
| | - Hans Ågren
- Division of Theoretical Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology, SE-106 91, Stockholm, Sweden
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Abstract
Understanding protein-inorganic surface interactions is central to the rational design of new tools in biomaterial sciences, nanobiotechnology and nanomedicine. Although a significant amount of experimental research on protein adsorption onto solid substrates has been reported, many aspects of the recognition and interaction mechanisms of biomolecules and inorganic surfaces are still unclear. Theoretical modeling and simulations provide complementary approaches for experimental studies, and they have been applied for exploring protein-surface binding mechanisms, the determinants of binding specificity towards different surfaces, as well as the thermodynamics and kinetics of adsorption. Although the general computational approaches employed to study the dynamics of proteins and materials are similar, the models and force-fields (FFs) used for describing the physical properties and interactions of material surfaces and biological molecules differ. In particular, FF and water models designed for use in biomolecular simulations are often not directly transferable to surface simulations and vice versa. The adsorption events span a wide range of time- and length-scales that vary from nanoseconds to days, and from nanometers to micrometers, respectively, rendering the use of multi-scale approaches unavoidable. Further, changes in the atomic structure of material surfaces that can lead to surface reconstruction, and in the structure of proteins that can result in complete denaturation of the adsorbed molecules, can create many intermediate structural and energetic states that complicate sampling. In this review, we address the challenges posed to theoretical and computational methods in achieving accurate descriptions of the physical, chemical and mechanical properties of protein-surface systems. In this context, we discuss the applicability of different modeling and simulation techniques ranging from quantum mechanics through all-atom molecular mechanics to coarse-grained approaches. We examine uses of different sampling methods, as well as free energy calculations. Furthermore, we review computational studies of protein-surface interactions and discuss the successes and limitations of current approaches.
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Roy M, Pompella A, Kubacki J, Szade J, Roy RA, Hedzelek W. Photofunctionalization of Titanium: An Alternative Explanation of Its Chemical-Physical Mechanism. PLoS One 2016; 11:e0157481. [PMID: 27309723 PMCID: PMC4911147 DOI: 10.1371/journal.pone.0157481] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 05/30/2016] [Indexed: 01/12/2023] Open
Abstract
OBJECTIVES To demonstrate that titanium implant surfaces as little as 4 weeks from production are contaminated by atmospheric hydrocarbons. This phenomenon, also known as biological ageing can be reversed by UVC irradiation technically known as photofunctionalization. To propose a new model from our experimental evidence to explain how the changes in chemical structure of the surface will affect the adsorption of amino acids on the titanium surface enhancing osteointegration. METHODS In our study XPS and AES were used to analyze the effects of UVC irradiation (photofunctionalization) in reversing biological ageing of titanium. SEM was used to analyze any possible effects on the topography of the surface. RESULTS UVC irradiation was able to reverse biological ageing of titanium by greatly reducing the amount of carbon contamination present on the implant surface by up to 4 times, while the topography of the surface was not affected. UVC photon energy reduces surface H2O and increases TiOH with many -OH groups being produced. These groups explain the super-hydrophilic effect from photofunctionalization when these groups come into contact with water. SIGNIFICANCE Photofunctionalization has proven to be a valid method to reduce the amount of hydrocarbon contamination on titanium dental implants and improve biological results. The chemisorption mechanisms of amino acids, in our study, are dictated by the chemical structure and electric state present on the surface, but only in the presence of an also favourable geometrical composition at the atomical level.
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Affiliation(s)
- Marco Roy
- Prosthodontic Department, Poznan University of Medical Science, Poznan, Poland
| | - Alfonso Pompella
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa Medical School, Pisa, Italy
| | - Jerzy Kubacki
- A. Chelkowski Institute of Physics, University of Silesia, Katowice, Poland
- Silesian Center for Education and Interdisciplinary Research, Chorzów, Poland
| | - Jacek Szade
- A. Chelkowski Institute of Physics, University of Silesia, Katowice, Poland
- Silesian Center for Education and Interdisciplinary Research, Chorzów, Poland
| | | | - Wieslaw Hedzelek
- Prosthodontic Department, Poznan University of Medical Science, Poznan, Poland
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Aschauer U, Selloni A. Adsorption of biomedical coating molecules, amino acids, and short peptides on magnetite (110). J Chem Phys 2015; 143:044705. [DOI: 10.1063/1.4927327] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Ulrich Aschauer
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
- Materials Theory, ETH Zürich, Zürich, Switzerland
| | - Annabella Selloni
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
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