1
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Trang CM, Mora Perez C, Ran J, Prezhdo OV, Inkpen MS. Counterion Loss from Charged Surface-Bound Complexes Drives the Formation of Loosely Packed Monolayers. J Am Chem Soc 2024; 146:25625-25639. [PMID: 39250739 PMCID: PMC11421008 DOI: 10.1021/jacs.4c07327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 08/26/2024] [Accepted: 08/27/2024] [Indexed: 09/11/2024]
Abstract
The functionality of multicomponent self-assembled monolayers (SAMs) can be severely diminished by the segregation of like components into nanoscale domains, a process that maximizes favorable short-range intermolecular interactions. Here, we explore the use of a modular family of sulfur-functionalized metal bis(terpyridine) complexes ([M(tpy-R)2]2+(PF6-)2) to prepare mixed SAMs, considering that the comparable structure, dimensions, and ionic composition of these species should render them interchangeable within the adsorbed surface layer. While surface voltammetry experiments show that these SAMs do exhibit compositions representative of their assembly solutions, they also suggest, in line with previous reports, that adjacent complexes in the monolayer are separated by a gap of ∼ 1 nm. Remarkably, X-ray photoelectron spectroscopy studies reveal no F 1s peak features that would confirm the proliferation of PF6- counterions on the surface. We propose that the loosely packed structure of these SAMs results from the loss or exchange of PF6- counterions, which introduces significant repulsive Coulomb interactions between the adsorbed 2+ charged complexes. The hypothesis is supported by an electrostatic model which indicates that these complexes should form close-packed SAMs if mobile counterions are present. First-principles calculations demonstrate that complex-counterion binding interactions are weakened by charge transfer to the gold substrate, suggesting that this may play an important role in the formation of such low-coverage SAMs. Together, this study raises important questions regarding the assembly, organization, and composition of charged SAMs and highlights new opportunities in the design of multicomponent monolayer assemblies with free volume, for example, to facilitate surface-based reactions or support molecular switches.
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Affiliation(s)
- Christina
D. M. Trang
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Carlos Mora Perez
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Jingyi Ran
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Oleg V. Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Michael S. Inkpen
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
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2
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Zhang C, Das S, Sakurai N, Imaizumi T, Sanjayan S, Shoji Y, Fukushima T, Zharnikov M. Phosphonic acid anchored tripodal molecular films on indium tin oxide. Phys Chem Chem Phys 2024; 26:11360-11369. [PMID: 38567399 DOI: 10.1039/d4cp00892h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Whereas monopodal self-assembling monolayers (SAMs) are most frequently used for surface and interface engineering, tripodal SAMs are less popular due to the difficulty in achieving a reliable and homogeneous bonding configuration. In this context, in the present study, the potential of phosphonic acid (PA) decorated triptycene (TripPA) for formation of SAMs on oxide substrates was studied, using indium tin oxide (ITO) as a representative and application-relevant test support. A combination of several complementary experimental techniques was applied and a suitable monopodal reference system, benzylphosphonic acid (PPA), was used. The resulting data consistently show that TripPA forms well-defined, densely packed, and nearly contamination-free tripodal SAMs on ITO, with the similar parameters and properties as the monopodal reference system. Modification of wetting properties and work function of ITO by non-substituted and cyano-decorated TripPA SAMs was demonstrated, showing a potential of this tripodal system for surface engineering of oxide substrates.
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Affiliation(s)
- Chaoran Zhang
- Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany.
| | - Saunak Das
- Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany.
| | - Naoya Sakurai
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
| | - Takaki Imaizumi
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
| | - Sajisha Sanjayan
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
| | - Yoshiaki Shoji
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
| | - Takanori Fukushima
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.
- Living Systems Materialogy (LiSM) Research Group, International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
| | - Michael Zharnikov
- Angewandte Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany.
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3
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Wang J, Gadenne V, Patrone L, Raimundo JM. Self-Assembled Monolayers of Push-Pull Chromophores as Active Layers and Their Applications. Molecules 2024; 29:559. [PMID: 38338304 PMCID: PMC10856137 DOI: 10.3390/molecules29030559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 02/12/2024] Open
Abstract
In recent decades, considerable attention has been focused on the design and development of surfaces with defined or tunable properties for a wide range of applications and fields. To this end, self-assembled monolayers (SAMs) of organic compounds offer a unique and straightforward route of modifying and engineering the surface properties of any substrate. Thus, alkane-based self-assembled monolayers constitute one of the most extensively studied organic thin-film nanomaterials, which have found wide applications in antifouling surfaces, the control of wettability or cell adhesion, sensors, optical devices, corrosion protection, and organic electronics, among many other applications, some of which have led to their technological transfer to industry. Nevertheless, recently, aromatic-based SAMs have gained importance as functional components, particularly in molecular electronics, bioelectronics, sensors, etc., due to their intrinsic electrical conductivity and optical properties, opening up new perspectives in these fields. However, some key issues affecting device performance still need to be resolved to ensure their full use and access to novel functionalities such as memory, sensors, or active layers in optoelectronic devices. In this context, we will present herein recent advances in π-conjugated systems-based self-assembled monolayers (e.g., push-pull chromophores) as active layers and their applications.
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Affiliation(s)
- Junlong Wang
- Aix Marseille Univ, CNRS, CINaM, AMUTech, 13288 Marseille, France;
- ISEN, Université de Toulon, Aix Marseille Univ, CNRS, IM2NP, AMUtech, 83041 Toulon ou Marseille, France;
| | - Virginie Gadenne
- ISEN, Université de Toulon, Aix Marseille Univ, CNRS, IM2NP, AMUtech, 83041 Toulon ou Marseille, France;
| | - Lionel Patrone
- ISEN, Université de Toulon, Aix Marseille Univ, CNRS, IM2NP, AMUtech, 83041 Toulon ou Marseille, France;
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4
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Puiu M, Istrate OM, Mirceski V, Bala C. Ultrasensitive Detection of Hydrogen Peroxide Using Methylene Blue Grafted on Molecular Wires as Nanozyme with Catalase-like Activity. Anal Chem 2023; 95:16185-16193. [PMID: 37882766 DOI: 10.1021/acs.analchem.3c02919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
In this study, we present the development of an electrochemical sensor designed for ultrasensitive detection of endogenous H2O2. This sensor relies on signal amplification achieved through nanozyme activity exhibited by methylene blue (MB) grafted onto a peptide support. The sensor exhibited excellent selectivity and sensitivity, with a limit of detection of 18 nM and a linear detection range of 20-200 nM. Thus, we have validated the concept of the MB-peptide system, serving as both an electroactive label and a catalyst for H2O2 decomposition under electrochemical conditions. The implemented signal amplification system enables the rapid detection of H2O2, with an overall assay time of 1-2 min, a significant improvement compared to amperometric detection using surface-immobilized enzymes.
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Affiliation(s)
- Mihaela Puiu
- R&D Center LaborQ, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
- Department of Analytical Chemistry & Physical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
| | - Oana-Maria Istrate
- R&D Center LaborQ, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
| | - Valentin Mirceski
- Institute of Chemistry, Faculty of Natural Sciences and Mathematics, "Ss Cyril and Methodius" University in Skopje, P.O. Box 162, 1000 Skopje, RN Macedonia
- Department of Inorganic and Analytical Chemistry, University of Lodz, Tamka 12, 91-43 Lodz, Poland
- Research Center for Environment and Materials, Macedonian Academy of Sciences and Arts, Bul. Krste Misirkov 2, 1000 Skopje, RN Macedonia
| | - Camelia Bala
- R&D Center LaborQ, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
- Department of Analytical Chemistry & Physical Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
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5
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Solomon G, Landström A, Rotta Loria S, Bolli E, Mezzetti A, Facibeni A, Cattarin S, Mezzi A, Protti S, Kaciulis S, Zavelani-Rossi M, Concina I. Tunable physics through coordination chemistry: formation on oxide surface of Ti and Al chelates with 3-hydroxyflavone capable of electron injection and light emission. Dalton Trans 2022; 51:18489-18501. [PMID: 36421057 DOI: 10.1039/d2dt02195a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The optoelectronic features of 3-hydroxyflavone (3HF) self-assembled on the surface of an n-type semiconducting metal oxide (TiO2) and an insulator (Al2O3) are herein investigated. 3HF molecules use the coordinatively unsaturated metal ions present on the oxide surface to form metal complexes, which exhibit different behaviors upon light irradiation, depending on the nature of the metal ion. Specifically, we show that the photoluminescence of the surface species can be modulated according to the chemical properties of the complex (i.e. the binding metal ion), resulting in solid-state emitters in a high quantum yield (about 15%). Furthermore, photoinduced charge injection can be promoted or inhibited, providing a multifunctional hybrid system.
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Affiliation(s)
- Getachew Solomon
- Department of Engineering Sciences and Mathematics, Luleå University of Technology, 97187 Luleå, Sweden.
| | - Anton Landström
- Department of Engineering Sciences and Mathematics, Luleå University of Technology, 97187 Luleå, Sweden.
| | - Silvia Rotta Loria
- Dipartimento di Fisica, Politecnico di Milano, piazza L. da Vinci 32, 20133 Milano, Italy
| | - Eleonora Bolli
- Institute for the Study of Nanostructured Materials, ISMN-CNR, 00015 Monterotondo Stazione, Roma, Italy
| | - Alberto Mezzetti
- Laboratoire de Réactivité de Surface (LRS), Sorbonne Université, CNRS, 4 Place Jussieu, Paris 75005, France
| | - Anna Facibeni
- Dipartimento di Energia, Politecnico di Milano, via G. Ponzio 34/3, 20133 Milano, Italy.,IFN-CNR, piazza L. da Vinci 32, 20133 Milano, Italy
| | - Sandro Cattarin
- Istituto di Chimica della Materia Condensata e di Tecnologie per l'Energia, ICMATE-CNR, C.so Stati Uniti 4, 35127, Padova, Italy
| | - Alessio Mezzi
- Institute for the Study of Nanostructured Materials, ISMN-CNR, 00015 Monterotondo Stazione, Roma, Italy
| | - Stefano Protti
- Photogreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Saulius Kaciulis
- Institute for the Study of Nanostructured Materials, ISMN-CNR, 00015 Monterotondo Stazione, Roma, Italy
| | - Margherita Zavelani-Rossi
- Dipartimento di Energia, Politecnico di Milano, via G. Ponzio 34/3, 20133 Milano, Italy.,IFN-CNR, piazza L. da Vinci 32, 20133 Milano, Italy
| | - Isabella Concina
- Department of Engineering Sciences and Mathematics, Luleå University of Technology, 97187 Luleå, Sweden.
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6
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Fan Q, Ji X, Lan Q, Zhang H, Li Q, Zhang S, Yang B. An anti-icing copper-based superhydrophobic layer prepared by one-step electrodeposition in both cathode and anode. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128220] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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7
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Das S, Nascimbeni G, de la Morena RO, Ishiwari F, Shoji Y, Fukushima T, Buck M, Zojer E, Zharnikov M. Porous Honeycomb Self-Assembled Monolayers: Tripodal Adsorption and Hidden Chirality of Carboxylate Anchored Triptycenes on Ag. ACS NANO 2021; 15:11168-11179. [PMID: 34125529 PMCID: PMC8320238 DOI: 10.1021/acsnano.1c03626] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/08/2021] [Indexed: 06/12/2023]
Abstract
Molecules with tripodal anchoring to substrates represent a versatile platform for the fabrication of robust self-assembled monolayers (SAMs), complementing the conventional monopodal approach. In this context, we studied the adsorption of 1,8,13-tricarboxytriptycene (Trip-CA) on Ag(111), mimicked by a bilayer of silver atoms underpotentially deposited on Au. While tripodal SAMs frequently suffer from poor structural quality and inhomogeneous bonding configurations, the triptycene scaffold featuring three carboxylic acid anchoring groups yields highly crystalline SAM structures. A pronounced polymorphism is observed, with the formation of distinctly different structures depending on preparation conditions. Besides hexagonal molecular arrangements, the occurrence of a honeycomb structure is particularly intriguing as such an open structure is unusual for SAMs consisting of upright-standing molecules. Advanced spectroscopic tools reveal an equivalent bonding of all carboxylic acid anchoring groups. Notably, density functional theory calculations predict a chiral arrangement of the molecules in the honeycomb network, which, surprisingly, is not apparent in experimental scanning tunneling microscopy (STM) images. This seeming discrepancy between theory and experiment can be resolved by considering the details of the actual electronic structure of the adsorbate layer. The presented results represent an exemplary showcase for the intricacy of interpreting STM images of complex molecular films. They are also further evidence for the potential of triptycenes as basic building blocks for generating well-defined layers with unusual structural motifs.
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Affiliation(s)
- Saunak Das
- Angewandte
Physikalische Chemie, Universität
Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
| | - Giulia Nascimbeni
- Institute
of Solid State Physics, NAWI Graz, Graz
University of Technology, Petersgasse 16, 8010 Graz, Austria
| | | | - Fumitaka Ishiwari
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta,
Midori-ku, Yokohama 226-8503, Japan
| | - Yoshiaki Shoji
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta,
Midori-ku, Yokohama 226-8503, Japan
| | - Takanori Fukushima
- Laboratory
for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta,
Midori-ku, Yokohama 226-8503, Japan
| | - Manfred Buck
- EaStCHEM
School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, U.K.
| | - Egbert Zojer
- Institute
of Solid State Physics, NAWI Graz, Graz
University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Michael Zharnikov
- Angewandte
Physikalische Chemie, Universität
Heidelberg, Im Neuenheimer Feld 253, D-69120 Heidelberg, Germany
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8
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Suni II. Substrate Materials for Biomolecular Immobilization within Electrochemical Biosensors. BIOSENSORS 2021; 11:239. [PMID: 34356710 PMCID: PMC8301891 DOI: 10.3390/bios11070239] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/01/2021] [Accepted: 07/08/2021] [Indexed: 01/17/2023]
Abstract
Electrochemical biosensors have potential applications for agriculture, food safety, environmental monitoring, sports medicine, biomedicine, and other fields. One of the primary challenges in this field is the immobilization of biomolecular probes atop a solid substrate material with adequate stability, storage lifetime, and reproducibility. This review summarizes the current state of the art for covalent bonding of biomolecules onto solid substrate materials. Early research focused on the use of Au electrodes, with immobilization of biomolecules through ω-functionalized Au-thiol self-assembled monolayers (SAMs), but stability is usually inadequate due to the weak Au-S bond strength. Other noble substrates such as C, Pt, and Si have also been studied. While their nobility has the advantage of ensuring biocompatibility, it also has the disadvantage of making them relatively unreactive towards covalent bond formation. With the exception of Sn-doped In2O3 (indium tin oxide, ITO), most metal oxides are not electrically conductive enough for use within electrochemical biosensors. Recent research has focused on transition metal dichalcogenides (TMDs) such as MoS2 and on electrically conductive polymers such as polyaniline, polypyrrole, and polythiophene. In addition, the deposition of functionalized thin films from aryldiazonium cations has attracted significant attention as a substrate-independent method for biofunctionalization.
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Affiliation(s)
- Ian Ivar Suni
- Materials Technology Center, Southern Illinois University, Carbondale, IL 62901, USA; ; Tel.: +1-618-453-7822
- School of Chemistry and Biomolecular Sciences, Southern Illinois University, Carbondale, IL 62901, USA
- School of Mechanical, Aerospace and Materials Engineering, Southern Illinois University, Carbondale, IL 62901, USA
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9
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Hechenberger F, Kollotzek S, Ballauf L, Duensing F, Ončák M, Herman Z, Scheier P. Formation of HCN + in collisions of N + and N 2+ with a self-assembled propanethiol surface on gold. Phys Chem Chem Phys 2021; 23:7777-7782. [PMID: 33015698 DOI: 10.1039/d0cp04164e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Collisions of N+ and N2+ with C3 hydrocarbons, represented by a self assembled monolayer of propanethiol on a polcrystalline gold surface, were investigated by experiments over the incident energy range between 5 eV and 100 eV. For N+, formation of HCN+ is observed at incident energies of projectile ions as low as 20 eV. In the case of N2+ projectile ions, the yield of HCN+ increased above zero only at incident energies of about 50 eV. This collision energy in the laboratory frame corresponds to an activation energy of about 3 eV to 3.5 eV. In the case of N+ projectile ions, the yield of HCN+ was large for most of the incident energy range, but decreased to zero at incident energies below 20 eV. This may indicate a very small energy threshold for the surface reaction between N+ and C3 hydrocarbons of a few tenths of an eV. Such a threshold for the formation of HCN+ may exist also for collisions of N+ with an adsorbed mixture of hydrocarbon molecules.
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Affiliation(s)
- Faro Hechenberger
- Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Technikerst. 25, A-6020 Innsbruck, Austria.
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10
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Cheng X, Lu R, Zhang X, Zhu Y, Wei S, Zhang Y, Zan X, Geng W, Zhang L. Silanization of a Metal-Polyphenol Coating onto Diverse Substrates as a Strategy for Controllable Wettability with Enhanced Performance to Resist Acid Corrosion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:3637-3647. [PMID: 33740370 DOI: 10.1021/acs.langmuir.0c03623] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Wettability is a crucial characteristic of materials that plays a vital role in surface engineering. Surface modification is the key to changing the wettability of materials, and a simple and universal modification approach is being extensively pursued by researchers. Recently, metal-phenolic networks (MPNs) have been widely studied because they impart versatility and functionality in surface modification. However, an MPN is not stable for long periods, especially under acidic conditions, and is susceptible to pollution by invasive species. Spurred by the versatility of MPNs and various functionalities achieved by silanization, we introduce a general strategy to fabricate functionally stable coatings with controllable surface wettability by combining the two methods. The formation process of MPN and silane-MPN coatings was characterized by spectroscopic ellipsometry (SE), UV-visible-near-infrared (UV-vis-NIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), atomic force microscopy (AFM), water contact angle (WCA), etc. We found that the stability of the MPN was greatly enhanced after silanization, which is attributed to the cross-linking effect that occurs between silane and the MPN, namely, the cross-linking protection produced in this case. Additionally, the wettability of an MPN can be easily changed through our strategy. We trust that our strategy can further extend the applications of MPNs and points toward potential prospects in surface modification.
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Affiliation(s)
- Xinxiu Cheng
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Ruofei Lu
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xiaoqiang Zhang
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yaxin Zhu
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, People's Republic of China
| | - Shaoyin Wei
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University, 270 Xueyuan Road, Wenzhou 325035, People's Republic of China
| | - Yagang Zhang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, People's Republic of China
| | - Xingjie Zan
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Wujun Geng
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, People's Republic of China
| | - Letao Zhang
- Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, People's Republic of China
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11
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St Hill LR, Craft JW, Chinwangso P, Tran HV, Marquez MD, Lee TR. Antifouling Coatings Generated from Unsymmetrical Partially Fluorinated Spiroalkanedithiols. ACS APPLIED BIO MATERIALS 2021; 4:1563-1572. [PMID: 35006665 PMCID: PMC8812961 DOI: 10.1021/acsabm.0c01409] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
![]()
Biofouling
negatively impacts modern society on a daily basis,
especially with regard to the important industries of medicine, oil,
and shipping. This manuscript describes the preparation and study
of model antifouling coatings generated from the adsorption of unsymmetrical
partially fluorinated spiroalkanedithiols on gold. The antifouling
properties of the self-assembled monolayers (SAMs) derived from the
spiroalkanedithiols were compared to SAMs derived from analogous monodentate
partially fluorinated and nonfluorinated alkanethiols. The antifouling
properties were evaluated using in situ surface plasmon
resonance spectroscopy (SPR), ex situ electrochemical
quartz crystal microbalance (QCM) measurements, and ex situ ellipsometric thickness measurements. The resistance to nonspecific
protein adsorption of the SAMs was evaluated with proteins having
a wide range of properties and applications including protamine, lysozyme,
bovine serum albumin, and fibrinogen. The results from the SPR and
the QCM measurements demonstrated that in most cases, the SAM coatings
derived from the partially fluorinated spiroalkanedithiols having
mixed hydrocarbon and fluorocarbon tail groups exhibited better antifouling
performance when compared to the SAMs derived from their single-component
monodentate counterparts. The studies also revealed that while the
SPR and the QCM measurements in most cases were able to distinguish
the adsorption trends for the SAMs and proteins examined, the ellipsometric
thickness measurements were markedly less discriminating. On the whole,
these studies validate the use of unsymmetrical partially fluorinated
spiroalkanedithiols for generating effective antifouling coatings
on metal substrates.
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Affiliation(s)
- Lydia R St Hill
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - John W Craft
- Department of Biology and Biochemistry, University of Houston, 4800 Calhoun Road, Houston, Texas 77204-5001, United States
| | - Pawilai Chinwangso
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Hung-Vu Tran
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Maria D Marquez
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - T Randall Lee
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, Texas 77204-5003, United States
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12
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Correa‐Ascencio M, Galván‐Miranda EK, García‐Montalvo V, Cao R, Cea‐Olivares R, Jiménez‐Sandoval O, Vera‐Estrada IL. 4,5‐Bis(diphenylthiophosphinoyl)‐1,2,3‐triazolate interaction with gold nanoparticles and flat surfaces to form self‐assembled monolayers. SURF INTERFACE ANAL 2020. [DOI: 10.1002/sia.6859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Marisol Correa‐Ascencio
- Instituto de Química Universidad Nacional Autónoma de México Circuito Exterior, Ciudad Universitaria Ciudad de México CdMx 04510 México
| | - Elizabeth K. Galván‐Miranda
- Instituto de Química Universidad Nacional Autónoma de México Circuito Exterior, Ciudad Universitaria Ciudad de México CdMx 04510 México
| | - Verónica García‐Montalvo
- Instituto de Química Universidad Nacional Autónoma de México Circuito Exterior, Ciudad Universitaria Ciudad de México CdMx 04510 México
| | - Roberto Cao
- Facultad de Química Universidad de La Habana Zapata s/n Vedado La Habana 10400 Cuba
| | - Raymundo Cea‐Olivares
- Instituto de Química Universidad Nacional Autónoma de México Circuito Exterior, Ciudad Universitaria Ciudad de México CdMx 04510 México
| | - Omar Jiménez‐Sandoval
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional Libramiento Norponiente #2000, Fracc. Real de Juriquilla Querétaro Querétaro 76230 Mexico
| | - Irma Lucía Vera‐Estrada
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional Libramiento Norponiente #2000, Fracc. Real de Juriquilla Querétaro Querétaro 76230 Mexico
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13
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Sakunkaewkasem S, Gonzalez MA, Marquez MD, Lee TR. Olefin-Bridged Bidentate Adsorbates for Generating Self-Assembled Monolayers on Gold. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:10699-10707. [PMID: 32803985 DOI: 10.1021/acs.langmuir.0c01373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A series of custom-designed olefin-bridged bidentate adsorbates composed of an olefin group linking symmetrical hydrocarbon moieties of varying chain lengths was synthesized and used for the preparation of self-assembled monolayers (SAMs) on gold. The structures of the adsorbates are in the form Z-[CH3(CH2)m]2(C═C)[CH2SH]2 (OBCnSH) where m = 12-15 and n = m + 3 (OBC15SH, OBC16SH, OBC17SH, and OBC18SH). The influence of the olefin linker on the structural and interfacial properties of the SAMs was investigated and compared to SAMs formed from analogous n-alkanethiols. Characterization techniques included ellipsometry, X-ray photoelectron spectroscopy (XPS), polarization modulation-infrared reflection-adsorption spectroscopy (PM-IRRAS), and contact angle measurements. The OBCnSH SAMs exhibited ellipsometric thicknesses that were similar to their monodentate counterparts, suggesting that the new olefin-bridged adsorbates pack similarly to the monodentate analogs. Characterization by PM-IRRAS revealed that the OBCnSH SAMs were as conformationally ordered as those derived from the reference n-alkanethiols with the exception of the adsorbate with the shortest chain length OBC15SH, which exhibited low coverage and a liquid-like structure. Unlike the SAMs derived from the n-alkanethiols, the OBCnSH SAMs failed to exhibit "odd-even" effects. However, the OBCnSH SAMs displayed similar hexadecane contact angles as their n-alkanethiol counterparts with the exception of OBC15SH, which exhibited markedly diminished hexadecane contact angles. The similar structural and interfacial properties of the OBCnSH SAMs, when compared to analogous n-alkanethiol SAMs, render the molecular architecture of the olefin-bridged dithiol as a robust platform for the synthesis of adsorbates with two chemically distinct tailgroups for use in the preparation and study of phase-incompatible "conflicted" interfaces.
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Affiliation(s)
- Siwakorn Sakunkaewkasem
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Mario A Gonzalez
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Maria D Marquez
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - T Randall Lee
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, Texas 77204-5003, United States
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14
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Nanofabrication Techniques in Large-Area Molecular Electronic Devices. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10176064] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The societal impact of the electronics industry is enormous—not to mention how this industry impinges on the global economy. The foreseen limits of the current technology—technical, economic, and sustainability issues—open the door to the search for successor technologies. In this context, molecular electronics has emerged as a promising candidate that, at least in the short-term, will not likely replace our silicon-based electronics, but improve its performance through a nascent hybrid technology. Such technology will take advantage of both the small dimensions of the molecules and new functionalities resulting from the quantum effects that govern the properties at the molecular scale. An optimization of interface engineering and integration of molecules to form densely integrated individually addressable arrays of molecules are two crucial aspects in the molecular electronics field. These challenges should be met to establish the bridge between organic functional materials and hard electronics required for the incorporation of such hybrid technology in the market. In this review, the most advanced methods for fabricating large-area molecular electronic devices are presented, highlighting their advantages and limitations. Special emphasis is focused on bottom-up methodologies for the fabrication of well-ordered and tightly-packed monolayers onto the bottom electrode, followed by a description of the top-contact deposition methods so far used.
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15
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Benneckendorf FS, Rohnacher V, Sauter E, Hillebrandt S, Münch M, Wang C, Casalini S, Ihrig K, Beck S, Jänsch D, Freudenberg J, Jaegermann W, Samorì P, Pucci A, Bunz UHF, Zharnikov M, Müllen K. Tetrapodal Diazatriptycene Enforces Orthogonal Orientation in Self-Assembled Monolayers. ACS APPLIED MATERIALS & INTERFACES 2020; 12:6565-6572. [PMID: 31825591 DOI: 10.1021/acsami.9b16062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Conformationally rigid multipodal molecules should control the orientation and packing density of functional head groups upon self-assembly on solid supports. Common tripods frequently fail in this regard because of inhomogeneous bonding configuration and stochastic orientation. These issues are circumvented by a suitable tetrapodal diazatriptycene moiety, bearing four thiol-anchoring groups, as demonstrated in the present study. Such molecules form well-defined self-assembled monolayers (SAMs) on Au(111) substrates, whereby the tetrapodal scaffold enforces a nearly upright orientation of the terminal head group with respect to the substrate, with at least three of the four anchoring groups providing thiolate-like covalent attachment to the surface. Functionalization by condensation chemistry allows a large variety of functional head groups to be introduced to the tetrapod, paving the path toward advanced surface engineering and sensor fabrication.
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Affiliation(s)
- Frank S Benneckendorf
- Organisch-Chemisches Institut , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
| | - Valentina Rohnacher
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Kirchhoff-Institut für Physik , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
| | - Eric Sauter
- Angewandte Physikalische Chemie , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 253 , 69120 Heidelberg , Germany
| | - Sabina Hillebrandt
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Organic Semiconductor Centre, SUPA, School of Physics and Astronomy , University of St Andrews , North Haugh , St Andrews KY16 9SS , United Kingdom
- Kirchhoff-Institut für Physik , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
| | - Maybritt Münch
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Materials Science Department, Surface Science Division , TU Darmstadt , Otto-Berndt-Straße 3 , 64287 Darmstadt , Germany
| | - Can Wang
- University of Strasbourg , CNRS, ISIS, 8 allée Gaspard Monge , 67000 Strasbourg , France
| | - Stefano Casalini
- University of Strasbourg , CNRS, ISIS, 8 allée Gaspard Monge , 67000 Strasbourg , France
| | - Katharina Ihrig
- Organisch-Chemisches Institut , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
| | - Sebastian Beck
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Kirchhoff-Institut für Physik , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
| | - Daniel Jänsch
- Organisch-Chemisches Institut , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
| | - Jan Freudenberg
- Organisch-Chemisches Institut , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
| | - Wolfram Jaegermann
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Materials Science Department, Surface Science Division , TU Darmstadt , Otto-Berndt-Straße 3 , 64287 Darmstadt , Germany
| | - Paolo Samorì
- University of Strasbourg , CNRS, ISIS, 8 allée Gaspard Monge , 67000 Strasbourg , France
| | - Annemarie Pucci
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Kirchhoff-Institut für Physik , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
- Centre for Advanced Materials , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 225 , 69120 Heidelberg , Germany
| | - Uwe H F Bunz
- Organisch-Chemisches Institut , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
- Centre for Advanced Materials , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 225 , 69120 Heidelberg , Germany
| | - Michael Zharnikov
- Angewandte Physikalische Chemie , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 253 , 69120 Heidelberg , Germany
| | - Klaus Müllen
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Max Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
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16
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Seidi F, Zhao W, Xiao H, Jin Y, Saeb MR, Zhao C. Radical polymerization as a versatile tool for surface grafting of thin hydrogel films. Polym Chem 2020. [DOI: 10.1039/d0py00787k] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The surface of solid substrates is the main part that interacts with the environment.
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Affiliation(s)
- Farzad Seidi
- Provincial Key Lab of Pulp & Paper Sci and Tech
- and Joint International Research Lab of Lignocellulosic Functional Materials
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Weifeng Zhao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Huining Xiao
- Department of Chemical Engineering
- University of New Brunswick
- Fredericton
- E3B 5A3 Canada
| | - Yongcan Jin
- Provincial Key Lab of Pulp & Paper Sci and Tech
- and Joint International Research Lab of Lignocellulosic Functional Materials
- Nanjing Forestry University
- Nanjing 210037
- China
| | - Mohammad Reza Saeb
- Department of Resin and Additives
- Institute for Color Science and Technology
- Tehran
- Iran
| | - Changsheng Zhao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
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17
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Luo Y, Xiao Y, Onidas D, Iannazzo L, Ethève-Quelquejeu M, Lamouri A, Félidj N, Mahouche-Chergui S, Brulé T, Gagey-Eilstein N, Gazeau F, Mangeney C. Raman reporters derived from aryl diazonium salts for SERS encoded-nanoparticles. Chem Commun (Camb) 2020; 56:6822-6825. [DOI: 10.1039/d0cc02842h] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A new generation of surface-enhanced Raman scattering encoded-nanoparticles has been designed by combining aryl diazonium salt chemistry and gold nanoparticles.
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Affiliation(s)
- Yun Luo
- Université de Paris
- LCBPT
- UMR 8601
- F-75006 Paris
- France
| | - Yu Xiao
- Université de Paris
- LCBPT
- UMR 8601
- F-75006 Paris
- France
| | | | | | | | | | | | | | - Thibault Brulé
- HORIBA France SAS
- 14 Boulevard Thomas Gobert
- Passage Jobin Yvon
- 91120 Palaiseau
- France
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18
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Li ZQ, Tang JH, Zhong YW. Multidentate Anchors for Surface Functionalization. Chem Asian J 2019; 14:3119-3126. [PMID: 31389657 DOI: 10.1002/asia.201900989] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 08/06/2019] [Indexed: 01/01/2023]
Abstract
The bottom-up functionalization of solid surfaces shows increasing importance for a wide range of interdisciplinary applications. Multidentate anchors with more than two contact points can bind to solid surfaces with strong chemisorption, well-defined upright configuration, and tailored functionality. The surface functionalization using multidentate anchors with three (tripodal), four (quadripodal), or more binding points is summarized herein, with a focus on those beyond classical tripodal anchors. In particular, the molecular design on how to achieve multisite interaction between anchor and substrate and the introduction of functional groups to thin films are discussed.
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Affiliation(s)
- Zhong-Qiu Li
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 2 Bei Yi Jie, Zhong Guan Cun, Haidian District, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jian-Hong Tang
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 2 Bei Yi Jie, Zhong Guan Cun, Haidian District, Beijing, 100190, China
| | - Yu-Wu Zhong
- Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 2 Bei Yi Jie, Zhong Guan Cun, Haidian District, Beijing, 100190, China.,School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
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19
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Harashima T, Hasegawa Y, Kaneko S, Kiguchi M, Ono T, Nishino T. Highly Reproducible Formation of a Polymer Single‐Molecule Junction for a Well‐Defined Current Signal. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Takanori Harashima
- Department of ChemistrySchool of ScienceTokyo Institute of Technology Ookayama, Meguro-ku Tokyo 152-8551 Japan
| | - Yusuke Hasegawa
- Department of ChemistrySchool of ScienceTokyo Institute of Technology Ookayama, Meguro-ku Tokyo 152-8551 Japan
| | - Satoshi Kaneko
- Department of ChemistrySchool of ScienceTokyo Institute of Technology Ookayama, Meguro-ku Tokyo 152-8551 Japan
| | - Manabu Kiguchi
- Department of ChemistrySchool of ScienceTokyo Institute of Technology Ookayama, Meguro-ku Tokyo 152-8551 Japan
| | - Tomoya Ono
- Center for Computational SciencesUniversity of Tsukuba Tennodai Tsukuba 305-8577 Japan
- Present address: Department of Electrical and Electronic EngineeringGraduate School of EngineeringKobe University Rokkodai, Nada-ku Kobe 657-8501 Japan
| | - Tomoaki Nishino
- Department of ChemistrySchool of ScienceTokyo Institute of Technology Ookayama, Meguro-ku Tokyo 152-8551 Japan
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20
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Harashima T, Hasegawa Y, Kaneko S, Kiguchi M, Ono T, Nishino T. Highly Reproducible Formation of a Polymer Single-Molecule Junction for a Well-Defined Current Signal. Angew Chem Int Ed Engl 2019; 58:9109-9113. [PMID: 31037805 DOI: 10.1002/anie.201903717] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Indexed: 11/05/2022]
Abstract
Single-molecule devices attract much interest in the development of nanoscale electronics. Although a variety of functional single molecules for single-molecule electronics have been developed, there still remains the need to implement sophisticated functionalization toward practical applications. Given its superior functionality encountered in macroscopic materials, a polymer could be a useful building block in the single-molecule devices. Therefore, a molecular junction composed of polymer has now been created. Furthermore, an automated algorithm was developed to quantitatively analyze the tunneling current through the junction. Quantitative analysis revealed that the polymer junction exhibits a higher formation probability and longer lifetime than its monomer counterpart. These results suggest that the polymer provides a unique opportunity to design both stable and highly functional molecular devices for nanoelectronics.
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Affiliation(s)
- Takanori Harashima
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Yusuke Hasegawa
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Satoshi Kaneko
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Manabu Kiguchi
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
| | - Tomoya Ono
- Center for Computational Sciences, University of Tsukuba, Tennodai, Tsukuba, 305-8577, Japan.,Present address: Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada-ku, Kobe, 657-8501, Japan
| | - Tomoaki Nishino
- Department of Chemistry, School of Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8551, Japan
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21
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Wang L, Polyansky DE, Concepcion JJ. Self-Assembled Bilayers as an Anchoring Strategy: Catalysts, Chromophores, and Chromophore-Catalyst Assemblies. J Am Chem Soc 2019; 141:8020-8024. [PMID: 31062973 DOI: 10.1021/jacs.9b01044] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Anchoring strategies for immobilization of molecular catalysts, chromophores, and chromophore-catalyst assemblies on electrode surfaces play an important role in solar energy conversion devices such as dye-sensitized solar cells and dye-sensitized photoelectrosynthesis cells. They are also important in interfacial studies with surface-bound molecules including electron-transfer dynamics and mechanistic studies related to small molecule activation catalysis. Significant progress has been made in this area, but many challenges remain in terms of stability, synthetic complexity, and versatility. We report here a new anchoring strategy based on self-assembled bilayers. This strategy takes advantage of noncovalent interactions between long alkyl chains chemically bound to a metal-oxide electrode surface and long alkyl chains on the molecule being anchored. The new methodology is applicable to the heterogenization of both catalysts and chromophores as well as to the in situ "synthesis" of chromophore-catalyst assemblies on the electrode surface.
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Affiliation(s)
- Lei Wang
- Chemistry Division , Brookhaven National Laboratory , Upton , New York 11973 , United States
| | - Dmitry E Polyansky
- Chemistry Division , Brookhaven National Laboratory , Upton , New York 11973 , United States
| | - Javier J Concepcion
- Chemistry Division , Brookhaven National Laboratory , Upton , New York 11973 , United States
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22
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Kolivoška V, Šebera J, Sebechlebská T, Lindner M, Gasior J, Mészáros G, Mayor M, Valášek M, Hromadová M. Probabilistic mapping of single molecule junction configurations as a tool to achieve the desired geometry of asymmetric tripodal molecules. Chem Commun (Camb) 2019; 55:3351-3354. [PMID: 30815643 DOI: 10.1039/c8cc09681c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Four molecules containing identical tripodal anchors and p-oligophenylene molecular wires of increasing length were used to demonstrate tuning of the asymmetric molecular junction to the desired geometry by probabilistic mapping of single molecule junction configurations in a scanning tunnelling microscopy break junction experiment.
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Affiliation(s)
- Viliam Kolivoška
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic.
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23
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Poltronieri P, Primiceri E, Radhakrishnan R. EIS-Based Biosensors in Foodborne Pathogen Detection with a Special Focus on Listeria monocytogenes. Methods Mol Biol 2019; 1918:87-101. [PMID: 30580401 DOI: 10.1007/978-1-4939-9000-9_7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this chapter methods and protocols for surfaces adapted to electrochemical impedance detection, antibody binding, electrolyte couples used, and instrumentation for EIS Biosensing are presented. Various technical bottlenecks have been overcome in recent years. Other limitations still present in this technique are discussed. We present the most recent applications in food pathogen detection based on EIS methods, as well as using other antibody-based platforms.
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24
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Börner MC, Neugebauer J. Optimizing bidentate N-heterocyclic carbene ligands for the modification of late transition metal surfaces – new insights through theory. Phys Chem Chem Phys 2019; 21:24926-24934. [DOI: 10.1039/c9cp03840j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We identify key factors determining the adsorption behaviour of bidentate NHCs on noble metal surfaces.
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Affiliation(s)
- Melanie C. Börner
- Theoretische Organische Chemie
- Organisch-Chemisches Institut and Center for Multiscale Theory and Computation
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Johannes Neugebauer
- Theoretische Organische Chemie
- Organisch-Chemisches Institut and Center for Multiscale Theory and Computation
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
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25
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Recent development of fiber-optic chemical sensors and biosensors: Mechanisms, materials, micro/nano-fabrications and applications. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.08.001] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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26
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Chinwangso P, St Hill LR, Marquez MD, Lee TR. Unsymmetrical Spiroalkanedithiols Having Mixed Fluorinated and Alkyl Tailgroups of Varying Length: Film Structure and Interfacial Properties. Molecules 2018; 23:E2632. [PMID: 30322175 PMCID: PMC6222720 DOI: 10.3390/molecules23102632] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 09/19/2018] [Accepted: 09/25/2018] [Indexed: 02/01/2023] Open
Abstract
A custom-designed series of unsymmetrical spiroalkanedithiols having tailgroups comprised of a terminally fluorinated chain and a hydrocarbon chain of varying lengths were synthesized and used to prepare self-assembled monolayers (SAMs) on gold substrates. The specific structure of the adsorbates was of the form [CH₃(CH₂)n][CF₃(CF₂)₇(CH₂)₈]C[CH₂SH]₂, where n = 7, 9, and 15 (designated as F8H10-C10, F8H10-C12, and F8H10-C18, respectively). The influence of the length of the hydrocarbon chain in the bidentate dithiol on the structure and interfacial properties of the monolayer was explored. A structurally analogous partially fluorinated monodentate alkanethiol and the corresponding normal alkanethiols were used to generate appropriate SAMs as reference systems. Measurements of ellipsometric thickness showed an unexpectedly low film thickness for the SAMs derived from the bidentate adsorbates, possibly due to disruptions in interchain packing caused by the fluorocarbon chains (i.e., phase-incompatible fluorocarbon-hydrocarbon interactions), ultimately giving rise to loosely packed and disordered films. Analysis by X-ray photoelectron spectroscopy (XPS) were also consistent with a model in which the films were loosely packed; additionally, the XPS spectra confirmed the attachment of the sulfur headgroups of the bidentate adsorbates onto the gold substrates. Studies of the SAMs by polarization modulation-infrared reflection-adsorption spectroscopy (PM-IRRAS) suggested that as the length of the hydrocarbon chain in the adsorbates was extended, a more ordered surface was achieved by reducing the tilt of the fluorocarbon segment. The wettability data indicated that the adsorbates with longer alkyl chains were less wettable than those with shorter alkyl chains, likely due to an increase in interchain van der Waals forces in the former.
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Affiliation(s)
- Pawilai Chinwangso
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA.
| | - Lydia R St Hill
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA.
| | - Maria D Marquez
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA.
| | - T Randall Lee
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, TX 77204-5003, USA.
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27
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Law CS, Lim SY, Abell AD, Voelcker NH, Santos A. Nanoporous Anodic Alumina Photonic Crystals for Optical Chemo- and Biosensing: Fundamentals, Advances, and Perspectives. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E788. [PMID: 30287772 PMCID: PMC6215225 DOI: 10.3390/nano8100788] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 10/01/2018] [Accepted: 10/01/2018] [Indexed: 12/15/2022]
Abstract
Optical sensors are a class of devices that enable the identification and/or quantification of analyte molecules across multiple fields and disciplines such as environmental protection, medical diagnosis, security, food technology, biotechnology, and animal welfare. Nanoporous photonic crystal (PC) structures provide excellent platforms to develop such systems for a plethora of applications since these engineered materials enable precise and versatile control of light⁻matter interactions at the nanoscale. Nanoporous PCs provide both high sensitivity to monitor in real-time molecular binding events and a nanoporous matrix for selective immobilization of molecules of interest over increased surface areas. Nanoporous anodic alumina (NAA), a nanomaterial long envisaged as a PC, is an outstanding platform material to develop optical sensing systems in combination with multiple photonic technologies. Nanoporous anodic alumina photonic crystals (NAA-PCs) provide a versatile nanoporous structure that can be engineered in a multidimensional fashion to create unique PC sensing platforms such as Fabry⁻Pérot interferometers, distributed Bragg reflectors, gradient-index filters, optical microcavities, and others. The effective medium of NAA-PCs undergoes changes upon interactions with analyte molecules. These changes modify the NAA-PCs' spectral fingerprints, which can be readily quantified to develop different sensing systems. This review introduces the fundamental development of NAA-PCs, compiling the most significant advances in the use of these optical materials for chemo- and biosensing applications, with a final prospective outlook about this exciting and dynamic field.
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Affiliation(s)
- Cheryl Suwen Law
- School of Chemical Engineering, The University of Adelaide, Adelaide SA 5005, Australia.
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide SA 5005, Australia.
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide SA 5005, Australia.
| | - Siew Yee Lim
- School of Chemical Engineering, The University of Adelaide, Adelaide SA 5005, Australia.
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide SA 5005, Australia.
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide SA 5005, Australia.
| | - Andrew D Abell
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide SA 5005, Australia.
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide SA 5005, Australia.
- Department of Chemistry, The University of Adelaide, Adelaide SA 5005, Australia.
| | - Nicolas H Voelcker
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Melbourne 3168, Australia.
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne 3052, Australia.
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Melbourne 3168, Australia.
- INM-Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany.
| | - Abel Santos
- School of Chemical Engineering, The University of Adelaide, Adelaide SA 5005, Australia.
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide SA 5005, Australia.
- ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide SA 5005, Australia.
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28
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Herrer IL, Ismael AK, Milán DC, Vezzoli A, Martín S, González-Orive A, Grace I, Lambert C, Serrano JL, Nichols RJ, Cea P. Unconventional Single-Molecule Conductance Behavior for a New Heterocyclic Anchoring Group: Pyrazolyl. J Phys Chem Lett 2018; 9:5364-5372. [PMID: 30160491 DOI: 10.1021/acs.jpclett.8b02051] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Electrical conductance across a molecular junction is strongly determined by the anchoring group of the molecule. Here we highlight the unusual behavior of 1,4-bis(1H-pyrazol-4-ylethynyl)benzene that exhibits unconventional junction current versus junction-stretching distance curves, which are peak-shaped and feature two conducting states of 2.3 × 10-4 G0 and 3.4 × 10-4 G0. A combination of theory and experiments is used to understand the conductance of single-molecule junctions featuring this new anchoring group, i.e., pyrazolyl. These results demonstrate that the pyrazolyl moiety changes its protonation state and contact binding during junction evolution and that it also binds in either end-on or facial geometries with gold contacts. The pyrazolyl moiety holds general interest as a contacting group, because this linkage leads to a strong double anchoring of the molecule to the gold electrode, resulting in enhanced conductance values.
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Affiliation(s)
- I Lucia Herrer
- Departamento de Química Física, Facultad de Ciencias , Universidad de Zaragoza , 50009 Zaragoza , Spain
- Instituto de Nanociencia de Aragón (INA) and Laboratorio de Microscopias Avanzadas (LMA), edificio i+d Campus Río Ebro , Universidad de Zaragoza , C/Mariano Esquillor, s/n , 50018 Zaragoza , Spain
| | - Ali K Ismael
- Department of Physics , University of Lancaster , Lancaster LA1 4YB , United Kingdom
- Department of Physics, College of Education for Pure Science , Tikrit University , Tikrit , Iraq
| | - David C Milán
- Department of Chemistry , University of Liverpool , Crown Street , Liverpool L69 7ZD , United Kingdom
| | - Andrea Vezzoli
- Department of Chemistry , University of Liverpool , Crown Street , Liverpool L69 7ZD , United Kingdom
| | - Santiago Martín
- Departamento de Química Física, Facultad de Ciencias , Universidad de Zaragoza , 50009 Zaragoza , Spain
- Instituto de Ciencias de Materiales de Aragón (ICMA) , Universidad de Zaragoza-CSIC , 50009 Zaragoza , Spain
| | - Alejandro González-Orive
- Technical and Macromolecular Chemistry , University of Paderborn , Warburger Straße 100 , 33098 Paderborn , Germany
| | - Iain Grace
- Department of Physics , University of Lancaster , Lancaster LA1 4YB , United Kingdom
| | - Colin Lambert
- Department of Physics , University of Lancaster , Lancaster LA1 4YB , United Kingdom
| | - José L Serrano
- Departamento de Química Física, Facultad de Ciencias , Universidad de Zaragoza , 50009 Zaragoza , Spain
- Instituto de Nanociencia de Aragón (INA) and Laboratorio de Microscopias Avanzadas (LMA), edificio i+d Campus Río Ebro , Universidad de Zaragoza , C/Mariano Esquillor, s/n , 50018 Zaragoza , Spain
| | - Richard J Nichols
- Department of Chemistry , University of Liverpool , Crown Street , Liverpool L69 7ZD , United Kingdom
| | - Pilar Cea
- Departamento de Química Física, Facultad de Ciencias , Universidad de Zaragoza , 50009 Zaragoza , Spain
- Instituto de Nanociencia de Aragón (INA) and Laboratorio de Microscopias Avanzadas (LMA), edificio i+d Campus Río Ebro , Universidad de Zaragoza , C/Mariano Esquillor, s/n , 50018 Zaragoza , Spain
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29
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Tang JH, Cai Z, Yan D, Tang K, Shao JY, Zhan C, Wang D, Zhong YW, Wan LJ, Yao J. Molecular Quadripod as a Noncovalent Interfacial Coupling Reagent for Forming Immobilized Coordination Assemblies. J Am Chem Soc 2018; 140:12337-12340. [DOI: 10.1021/jacs.8b07777] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Jian-Hong Tang
- Beijing National Research Center of Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhenfeng Cai
- Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dong Yan
- Beijing National Research Center of Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kun Tang
- Beijing National Research Center of Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiang-Yang Shao
- Beijing National Research Center of Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Chuanlang Zhan
- Beijing National Research Center of Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Dong Wang
- Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu-Wu Zhong
- Beijing National Research Center of Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li-Jun Wan
- Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiannian Yao
- Beijing National Research Center of Molecular Sciences, Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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30
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Lv A, Freitag M, Chepiga KM, Schäfer AH, Glorius F, Chi L. N-Heterocyclic-Carbene-Treated Gold Surfaces in Pentacene Organic Field-Effect Transistors: Improved Stability and Contact at the Interface. Angew Chem Int Ed Engl 2018; 57:4792-4796. [PMID: 29453805 DOI: 10.1002/anie.201713415] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 02/05/2018] [Indexed: 01/01/2023]
Abstract
N-Heterocyclic carbenes (NHCs), which react with the surface of Au electrodes, have been successfully applied in pentacene transistors. With the application of NHCs, the charge-carrier mobility of pentacene transistors increased by five times, while the contact resistance at the pentacene-Au interface was reduced by 85 %. Even after annealing the NHC-Au electrodes at 200 °C for 2 h before pentacene deposition, the charge-carrier mobility of the pentacene transistors did not decrease. The distinguished performance makes NHCs as excellent alternatives to thiols as metal modifiers for the application in organic field-effect transistors (OFETs).
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Affiliation(s)
- Aifeng Lv
- Physikalisches Institut and Center for Nanotechnology (CeNTech), Universität Münster, Wilhelm-Klemm-Strasse 10, 48149, Münster, Germany.,Functional Nano & Soft Materials Laboratory (FUNSOM), Soochow University, Renai Rd. 199, Suzhou, 215123, China.,College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, China
| | - Matthias Freitag
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Kathryn M Chepiga
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | | | - Frank Glorius
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, 48149, Münster, Germany
| | - Lifeng Chi
- Physikalisches Institut and Center for Nanotechnology (CeNTech), Universität Münster, Wilhelm-Klemm-Strasse 10, 48149, Münster, Germany.,Functional Nano & Soft Materials Laboratory (FUNSOM), Soochow University, Renai Rd. 199, Suzhou, 215123, China
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31
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Lv A, Freitag M, Chepiga KM, Schäfer AH, Glorius F, Chi L. Mit N‐heterocyclischen Carbenen behandelte Goldoberflächen in Pentacen‐Transistoren: Verbesserte Stabilität und Kontakt an der Grenzfläche. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201713415] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Aifeng Lv
- Physikalisches Institut und Center for Nanotechnology (CeNTech) Universität Münster Wilhelm-Klemm-Straße 10 48149 Münster Deutschland
- Functional Nano & Soft Materials Laboratory (FUNSOM) Soochow University Renai Rd. 199 Suzhou 215123 China
- College of Chemistry und Chemical Engineering Shanghai University of Engineering Science 333 Longteng Road Shanghai 201620 China
| | - Matthias Freitag
- Organisch-Chemisches Institut Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Kathryn M. Chepiga
- Organisch-Chemisches Institut Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | | | - Frank Glorius
- Organisch-Chemisches Institut Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Lifeng Chi
- Physikalisches Institut und Center for Nanotechnology (CeNTech) Universität Münster Wilhelm-Klemm-Straße 10 48149 Münster Deutschland
- Functional Nano & Soft Materials Laboratory (FUNSOM) Soochow University Renai Rd. 199 Suzhou 215123 China
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32
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Yamakawa K, Takagi J, Nguyen HT, Adachi K, Tsukahara Y. Oxidation Resistance of Nickel Surface by Molecular Coating of Thiol-terminated Polymers. CHEM LETT 2018. [DOI: 10.1246/cl.170941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kosuke Yamakawa
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Juri Takagi
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Hai Thanh Nguyen
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kaoru Adachi
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Yasuhisa Tsukahara
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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33
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Man RWY, Li CH, MacLean MWA, Zenkina OV, Zamora MT, Saunders LN, Rousina-Webb A, Nambo M, Crudden CM. Ultrastable Gold Nanoparticles Modified by Bidentate N-Heterocyclic Carbene Ligands. J Am Chem Soc 2018; 140:1576-1579. [PMID: 29211456 DOI: 10.1021/jacs.7b08516] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Highly stable gold nanoparticles (Au NPs) functionalized by bidentate N-heterocyclic carbene (NHC) ligands have been synthesized by top-down and bottom-up approaches. A detailed study of the effect of alkylation, denticity, and method of synthesis has led to the production of NHC-stabilized nanoparticles with higher thermal stability than bi- and tridentate thiol-protected Au NPs and than monodentate NHC-stabilized NPs. Importantly, bidentate NHC-protected NPs also displayed unprecedented stability to external thiol, which has been an unsolved problem to date with all nanoparticles. Thus, multidentate NHC ligands are an important, and as yet unrecognized, step forward for the preparation of high stability nanomaterials.
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Affiliation(s)
- Renee W Y Man
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University , Chikusa, Nagoya 464-8602, Japan
| | - Chien-Hung Li
- Department of Chemistry, Queen's University , Chernoff Hall, Kingston, Ontario Canada , K7L 3N6
| | - Michael W A MacLean
- Department of Chemistry, Queen's University , Chernoff Hall, Kingston, Ontario Canada , K7L 3N6
| | - Olena V Zenkina
- Department of Chemistry, Queen's University , Chernoff Hall, Kingston, Ontario Canada , K7L 3N6
| | - Matthew T Zamora
- Department of Chemistry, Queen's University , Chernoff Hall, Kingston, Ontario Canada , K7L 3N6
| | - Lisa N Saunders
- Department of Chemistry, Queen's University , Chernoff Hall, Kingston, Ontario Canada , K7L 3N6
| | - Alexander Rousina-Webb
- Department of Chemistry, Queen's University , Chernoff Hall, Kingston, Ontario Canada , K7L 3N6
| | - Masakazu Nambo
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University , Chikusa, Nagoya 464-8602, Japan
| | - Cathleen M Crudden
- Department of Chemistry, Queen's University , Chernoff Hall, Kingston, Ontario Canada , K7L 3N6.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University , Chikusa, Nagoya 464-8602, Japan
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34
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Liu X, Zhu C, Xu L, Dai Y, Liu Y, Liu Y. Green and Facile Synthesis of Highly Stable Gold Nanoparticles via Hyperbranched Polymer In-Situ Reduction and Their Application in Ag⁺ Detection and Separation. Polymers (Basel) 2018; 10:polym10010042. [PMID: 30966079 PMCID: PMC6415124 DOI: 10.3390/polym10010042] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 12/25/2017] [Accepted: 12/30/2017] [Indexed: 01/12/2023] Open
Abstract
The development of a green and facile strategy for synthesizing high stable gold nanoparticles (AuNPs) is still highly challenging. Additionally, the main problems regarding AuNPs based colorimetric sensors are their poor selectivity and low sensitivity, as well their tendency to aggregate during their synthesis and sensing process. Herein, we present an in-situ reduction strategy to synthesize thermoresponsive hyperbranched polymer (i.e., Hyperbranched polyethylenimine-terminal isobutyramide (HPEI-IBAm)) functionalized AuNPs. The HPEI-IBAm-AuNPs show excellent thermal stability up to 200 °C, high tolerance of a wide range of pH value (3⁻13), and high salt resistance. HPEI-IBAm acted as the template, the reducing agent, and the stabilizing agent for the preparation of AuNPs. The HPEI-IBAm-AuNPs can be used as colorimetric sensors for the detection of Ag⁺. In the detecting process, HPEI-IBAm serves as a trigger agent to cause an unusual color change from red to brown. This new non-aggregation-based colorimetric sensor showed high stability (maintaining the color lasting without fading), high selectivity, and high sensitivity with an extremely low detection limit of 7.22 nM and a good linear relationship in a wide concentration range of 0⁻2.0 mM (R² = 0.9921). Significantly, based on the thermoresponsive property of the HPEI-IBAm, the AuNPs/Ag composites can be separated after sensing detection, which can avoid secondary pollutions. Therefore, the green preparation and the applications of the unusual colorimetric sensor truly embody the concepts of energy saving, environmental protection, and sustainable development.
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Affiliation(s)
- Xunyong Liu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, Shandong Province, China.
| | - Chenxue Zhu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, Shandong Province, China.
| | - Li Xu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, Shandong Province, China.
| | - Yuqing Dai
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, Shandong Province, China.
| | - Yanli Liu
- School of Information and Electronic Engineering, Shandong Technology and Business University, Yantai 264005, Shandong Province, China.
| | - Yi Liu
- School of Chemistry and Materials Science, Ludong University, Yantai 264025, Shandong Province, China.
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35
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Radhakrishnan R, Poltronieri P. Fluorescence-Free Biosensor Methods in Detection of Food Pathogens with a Special Focus on Listeria monocytogenes. BIOSENSORS 2017; 7:E63. [PMID: 29261134 PMCID: PMC5746786 DOI: 10.3390/bios7040063] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 12/11/2017] [Accepted: 12/18/2017] [Indexed: 12/16/2022]
Abstract
Food pathogens contaminate food products that allow their growth on the shelf and also under refrigerated conditions. Therefore, it is of utmost importance to lower the limit of detection (LOD) of the method used and to obtain the results within hours to few days. Biosensor methods exploit the available technologies to individuate and provide an approximate quantification of the bacteria present in a sample. The main bottleneck of these methods depends on the aspecific binding to the surfaces and on a change in sensitivity when bacteria are in a complex food matrix with respect to bacteria in a liquid food sample. In this review, we introduce surface plasmon resonance (SPR), new advancements in SPR techniques, and electrochemical impedance spectroscopy (EIS), as fluorescence-free biosensing technologies for detection of L. monocytogenes in foods. The application of the two methods has facilitated L. monocytogenes detection with LOD of 1 log CFU/mL. Further advancements are envisaged through the combination of biosensor methods with immunoseparation of bacteria from larger volumes, application of lab-on-chip technologies, and EIS sensing methods for multiplex pathogen detection. Validation efforts are being conducted to demonstrate the robustness of detection, reproducibility and variability in multi-site installations.
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36
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Larrea CR, Baddeley CJ, Narouz MR, Mosey NJ, Horton JH, Crudden CM. N-Heterocyclic Carbene Self-assembled Monolayers on Copper and Gold: Dramatic Effect of Wingtip Groups on Binding, Orientation and Assembly. Chemphyschem 2017; 18:3536-3539. [PMID: 28960768 PMCID: PMC5765499 DOI: 10.1002/cphc.201701045] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Indexed: 11/11/2022]
Abstract
Self-assembled monolayers of N-heterocyclic carbenes (NHCs) on copper are reported. The monolayer structure is highly dependent on the N,N-substituents on the NHC. On both Cu(111) and Au(111), bulky isopropyl substituents force the NHC to bind perpendicular to the metal surface while methyl- or ethyl-substituted NHCs lie flat. Temperature-programmed desorption studies show that the NHC binds to Cu(111) with a desorption energy of Edes =152±10 kJ mol-1 . NHCs that bind upright desorb cleanly, while flat-lying NHCs decompose leaving adsorbed organic residues. Scanning tunneling microscopy of methylated NHCs reveals arrays of covalently linked dimers which transform into adsorbed (NHC)2 Cu species by extraction of a copper atom from the surface after annealing.
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Affiliation(s)
- Christian R. Larrea
- EaStCHEM School of ChemistryUniversity of St AndrewsSt AndrewsFifeUnited Kingdom
| | | | - Mina R. Narouz
- Department of ChemistryQueen's UniversityChernoff HallKingstonOntarioCanada
| | - Nicholas J. Mosey
- Department of ChemistryQueen's UniversityChernoff HallKingstonOntarioCanada
| | - J. Hugh Horton
- Department of ChemistryQueen's UniversityChernoff HallKingstonOntarioCanada
| | - Cathleen M. Crudden
- Department of ChemistryQueen's UniversityChernoff HallKingstonOntarioCanada
- Institute of Transformative Bio-Molecules (WPI-ITbM)Nagoya University ChikusaNagoyaJapan
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37
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Li Z, Munro K, Ebralize II, Narouz MR, Padmos JD, Hao H, Crudden CM, Horton JH. N-Heterocyclic Carbene Self-Assembled Monolayers on Gold as Surface Plasmon Resonance Biosensors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13936-13944. [PMID: 29141140 DOI: 10.1021/acs.langmuir.7b03280] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Surface plasmon resonance (SPR)-based biosensing is a powerful tool to study the recognition processes between biomolecules in real-time without need for labels. The use of thiol chemistry is a critical component in surface functionalization of various SPR biosensor surfaces on gold. However, its use is hampered by the high propensity for oxidation of the gold-thiol linkage even in ambient atmosphere, resulting in a short lifetime of SPR sensor chips unless strict precautions are taken. Herein, we describe an approach to overcome this limitation by employing highly robust self-assembled monolayers (SAMs) of alkylated N-heterocyclic carbenes (NHCs) on gold. An alkylated NHC sensor surface was developed and its biosensing capabilities were compared to a commercial thiol-based analogue-a hydrophobic association (HPA) chip-in terms of its ability to act as a reliable platform for biospecific interaction analysis under a wide range of conditions. The NHC-based SPR sensor outperforms related thiol-based sesnsors in several aspects, including lower nonspecific binding capacity, better chemical stability, higher reproducibility, shorter equilibration time, and longer life span. We also demonstrate that the NHC-based sensor can be used for rapid and efficient formation of a hybrid lipid bilayer for use in membrane interaction studies. Overall, this work identifies the great promise in designing NHC-based surfaces as a new technology platform for SPR-based biosensing.
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Affiliation(s)
- Zhijun Li
- Department of Chemistry, Queen's University , Kingston, Ontario K7L 3N6, Canada
| | - Kim Munro
- Protein Function Discovery Facility, Queen's University , Kingston, Ontario K7L 3N6, Canada
| | - Iraklli I Ebralize
- Department of Chemistry, Queen's University , Kingston, Ontario K7L 3N6, Canada
| | - Mina R Narouz
- Department of Chemistry, Queen's University , Kingston, Ontario K7L 3N6, Canada
| | - J Daniel Padmos
- Department of Chemistry, Queen's University , Kingston, Ontario K7L 3N6, Canada
| | - Hongxia Hao
- Collaborative Innovation Center of Judicial Civilization and Key Laboratory of Evidence Science, China University of Political Science and Law Beijing, 100088, China
| | - Cathleen M Crudden
- Department of Chemistry, Queen's University , Kingston, Ontario K7L 3N6, Canada
- Institute for Transformative Bio-Molecules (ITbM-WPI), Nagoya University , Chikusa, Nagoya 464-8602, Japan
| | - J Hugh Horton
- Department of Chemistry, Queen's University , Kingston, Ontario K7L 3N6, Canada
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38
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Investigation of the geometrical arrangement and single molecule charge transport in self-assembled monolayers of molecular towers based on tetraphenylmethane tripod. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.11.174] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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39
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Aitken RA, Jethwa SJ. Synthesis of Electro-active Compounds Suitable for Adsorption on Metal Surfaces. ORG PREP PROCED INT 2017. [DOI: 10.1080/00304948.2017.1374065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- R. Alan Aitken
- EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST, United Kingdom
| | - Siddharth J. Jethwa
- EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST, United Kingdom
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40
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Marquez MD, Zenasni O, Jamison AC, Lee TR. Homogeneously Mixed Monolayers: Emergence of Compositionally Conflicted Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8839-8855. [PMID: 28562051 DOI: 10.1021/acs.langmuir.7b00755] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The ability to manipulate interfaces at the nanoscale via a variety of thin-film technologies offers a plethora of avenues for advancing surface applications. These include surfaces with remarkable antibiofouling properties as well as those with tunable physical and electronic properties. Molecular self-assembly is one notably attractive method used to decorate and modify surfaces. Of particular interest to surface scientists has been the thiolate-gold system, which serves as a reliable method for generating model thin-film monolayers that transform the interfacial properties of gold surfaces. Despite widespread interest, efforts to tune the interfacial properties using mixed adsorbate systems have frequently led to phase-separated domains of molecules on the surface with random sizes and shapes depending on the structure and chemical composition of the adsorbates. This feature article highlights newly emerging methods for generating mixed thin-film interfaces, not only to enhance the aforementioned properties of organic thin films, but also to give rise to interfacial compositions never before observed in nature. An example would be the development of monolayers formed from bidentate adsorbates and other unique headgroup architectures that provide the surface bonding stability necessary to allow the assembly of interfaces that expose mixtures of chains that are fundamentally different in character (i.e., either phase-incompatible or structurally dissimilar), producing compositionally "conflicted" interfaces. By also exploring the prior efforts to produce such homogeneously blended interfaces, this feature article seeks to convey the relationships between the methods of film formation and the overall properties of the resulting interfaces.
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Affiliation(s)
- Maria D Marquez
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , Houston, Texas 77204-5003, United States
| | - Oussama Zenasni
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , Houston, Texas 77204-5003, United States
| | - Andrew C Jamison
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , Houston, Texas 77204-5003, United States
| | - T Randall Lee
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , Houston, Texas 77204-5003, United States
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41
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Valášek M, Mayor M. Spatial and Lateral Control of Functionality by Rigid Molecular Platforms. Chemistry 2017; 23:13538-13548. [PMID: 28766790 DOI: 10.1002/chem.201703349] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Indexed: 11/11/2022]
Abstract
Surface mounted molecular devices have received significant attention in the scientific community because of their unique ability to construct functional materials. The key involves the platform on which the molecular device works on solid substrates, such as in solid-liquid or solid-vacuum interfaces. Here, we outline the concept of rigid molecular platforms to immobilize active functionality atop flat surfaces in a controllable manner. Most of these (multipodal) platforms have at least three anchoring groups to control the spatial arrangement of the protruding functional moieties and form mechanically stable and electronically tuned contacts to the underlying substrate. Another approach is based on employing of flat aromatic scaffolds bearing perpendicular functionalities that form stable lateral assemblies on various surfaces. Emphasis is placed on the need for controllable assembly and separation of these tailor-made molecules that expose functionalities at the molecular scale. The discussions are focused on the different molecular designs realizing functional 3D architectures on surfaces, the role of various anchoring strategies to control the spatial arrangement, and structural considerations controlling physical features like the coupling to the surface or the available space for sterically demanding molecular operations.
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Affiliation(s)
- Michal Valášek
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Marcel Mayor
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.,Lehn Institute of Functional Materials (LIFM), Sun Yat-Sen University (SYSU), Xingang Rd. W., Guangzhou, P. R. China.,Department of Chemistry, University of Basel, St. Johannsring 19, 4056, Basel, Switzerland
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42
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Meena SK, Goldmann C, Nassoko D, Seydou M, Marchandier T, Moldovan S, Ersen O, Ribot F, Chanéac C, Sanchez C, Portehault D, Tielens F, Sulpizi M. Nanophase Segregation of Self-Assembled Monolayers on Gold Nanoparticles. ACS NANO 2017; 11:7371-7381. [PMID: 28613838 DOI: 10.1021/acsnano.7b03616] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nanophase segregation of a bicomponent thiol self-assembled monolayer is predicted using atomistic molecular dynamics simulations and experimentally confirmed. The simulations suggest the formation of domains rich in acid-terminated chains, on one hand, and of domains rich in amide-functionalized ethylene glycol oligomers, on the other hand. In particular, within the amide-ethylene glycol oligomers region, a key role is played by the formation of interchain hydrogen bonds. The predicted phase segregation is experimentally confirmed by the synthesis of 35 and 15 nm gold nanoparticles functionalized with several binary mixtures of ligands. An extensive study by transmission electron microscopy and electron tomography, using silica selective heterogeneous nucleation on acid-rich domains to provide electron contrast, supports simulations and highlights patchy nanoparticles with a trend toward Janus nano-objects depending on the nature of the ligands and the particle size. These results validate our computational platform as an effective tool to predict nanophase separation in organic mixtures on a surface and drive further exploration of advanced nanoparticle functionalization.
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Affiliation(s)
- Santosh Kumar Meena
- Institute of Physics, Johannes Gutenberg University Mainz , Staudingerweg 7, 55099 Mainz, Germany
| | - Claire Goldmann
- Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, Sorbonne Universités , 11 place Marcelin Berthelot, 75005 Paris, France
| | - Douga Nassoko
- Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, Sorbonne Universités , 11 place Marcelin Berthelot, 75005 Paris, France
- Ecole Normale Supérieure , Rue du 22 Octobre, Quartier du Fleuve, BP 241 Bamako, Mali
| | - Mahamadou Seydou
- Université Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR 7086 CNRS , 15 rue J.-A. de Baïf, 75205 CEDEX 13 Paris, France
| | - Thomas Marchandier
- Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, Sorbonne Universités , 11 place Marcelin Berthelot, 75005 Paris, France
| | - Simona Moldovan
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504 du CNRS , 23 rue du Loess, 67087 Strasbourg, France
| | - Ovidiu Ersen
- Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504 du CNRS , 23 rue du Loess, 67087 Strasbourg, France
| | - François Ribot
- Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, Sorbonne Universités , 11 place Marcelin Berthelot, 75005 Paris, France
| | - Corinne Chanéac
- Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, Sorbonne Universités , 11 place Marcelin Berthelot, 75005 Paris, France
| | - Clément Sanchez
- Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, Sorbonne Universités , 11 place Marcelin Berthelot, 75005 Paris, France
| | - David Portehault
- Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, Sorbonne Universités , 11 place Marcelin Berthelot, 75005 Paris, France
| | - Frederik Tielens
- Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, Sorbonne Universités , 11 place Marcelin Berthelot, 75005 Paris, France
| | - Marialore Sulpizi
- Institute of Physics, Johannes Gutenberg University Mainz , Staudingerweg 7, 55099 Mainz, Germany
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43
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Rittikulsittichai S, Park CS, Jamison AC, Rodriguez D, Zenasni O, Lee TR. Bidentate Aromatic Thiols on Gold: New Insight Regarding the Influence of Branching on the Structure, Packing, Wetting, and Stability of Self-Assembled Monolayers on Gold Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4396-4406. [PMID: 28383920 DOI: 10.1021/acs.langmuir.7b00088] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A series of 2-phenylpropane-1,3-dithiol derivatives with single (R1ArDT), double (R2ArDT), and triple (R3ArDT) octadecyloxy chains substituted at the 4-, 3,5-, and, 3,4,5-positions, respectively, on the aromatic ring were synthesized and used to form self-assembled monolayers (SAMs) on gold. Insight into the relationship between the surface chain and headgroup packing densities was investigated by varying the number of surface chains for the bidentate adsorbates in these monolayers. Characterization of the resulting SAMs using ellipsometry, X-ray photoelectron spectroscopy, polarization modulation infrared reflection-absorption spectroscopy, and contact angle goniometry revealed that the tailgroups become more comformationally ordered and more densely packed as the number of alkyl chains per adsorbate was increased. Conversely, the molecular packing density (i.e., number of molecules per unit area) decreased as the number of alkyl chains per adsorbate was increased. Of particular interest, the desorption profiles obtained in isooctane at 80 °C suggested that the bidentate adsorbate with the most densely packed alkyl chains, R3ArDT, was significantly more stable than the other SAMs, producing the following relative order for thermal stability for the dithiolate SAMs: R3ArDT > R2ArDT > R1ArDT.
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Affiliation(s)
- Supachai Rittikulsittichai
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Chul Soon Park
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Andrew C Jamison
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Daniela Rodriguez
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Oussama Zenasni
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - T Randall Lee
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
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44
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Escorihuela J, Zuilhof H. Rapid Surface Functionalization of Hydrogen-Terminated Silicon by Alkyl Silanols. J Am Chem Soc 2017; 139:5870-5876. [PMID: 28409624 PMCID: PMC5419668 DOI: 10.1021/jacs.7b01106] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
![]()
Surface
functionalization of inorganic semiconductor substrates,
particularly silicon, has focused attention toward many technologically
important applications, involving photovoltaic energy, biosensing
and catalysis. For such modification processes, oxide-free (H-terminated)
silicon surfaces are highly required, and different chemical approaches
have been described in the past decades. However, their reactivity
is often poor, requiring long reaction times (2–18 h) or the
use of UV light (10–30 min). Here, we report a simple and rapid
surface functionalization for H-terminated Si(111) surfaces using
alkyl silanols. This catalyst-free surface reaction is fast (15 min
at room temperature) and can be accelerated with UV light irradiation,
reducing the reaction time to 1–2 min. This grafting procedure
leads to densely packed organic monolayers that are hydrolytically
stable (even up to 30 days at pH 3 or 11) and can display excellent
antifouling behavior against a range of organic polymers.
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Affiliation(s)
- Jorge Escorihuela
- Laboratory of Organic Chemistry, Wageningen University and Research , Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University and Research , Stippeneng 4, 6708 WE Wageningen, The Netherlands.,School of Pharmaceutical Sciences and Technology, Tianjin University , Tianjin 300072, China.,Department of Chemical and Materials Engineering, King Abdulaziz University , Jeddah 23218, Saudi Arabia
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45
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Chinwangso P, Lee HJ, Jamison AC, Marquez MD, Park CS, Lee TR. Structure, Wettability, and Thermal Stability of Organic Thin-Films on Gold Generated from the Molecular Self-Assembly of Unsymmetrical Oligo(ethylene glycol) Spiroalkanedithiols. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:1751-1762. [PMID: 28107018 DOI: 10.1021/acs.langmuir.6b03803] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Organic thin-films on gold were prepared from a set of new, custom-designed bidentate alkanethiols possessing a mixture of normal alkane and methoxy-terminated tri(ethylene glycol) chains. The new unsymmetrical spiroalkanedithiol adsorbates were of the form [CH3O(CH2CH2O)3(CH2)5]-[CH3(CH2)n+1]C[CH2SH]2 where n = 3 and 14; designated EG3C7-C7 and EG3C7-C18, respectively. Their corresponding self-assembled monolayers (SAMs) on gold were characterized and compared with monothiol SAMs derived from an analogous normal alkanethiol (C18SH) and an alkanethiol terminated with an oligo(ethylene glycol) (OEG) moiety (i.e., EG3C7SH). Ellipsometric data revealed reduced film thicknesses for the double-chained dithiolate SAMs, which perhaps arose from the phase-incompatible merger of a hydrocarbon chain with an OEG moiety, contributing to disorder in the films and/or an increase in chain tilt. The comparable wettabilities of the SAMs derived from EG3C7SH and EG3C7-C7, using water as the contacting liquid, are consistent with exposure of the OEG moieties at both interfaces, whereas the lower wettability of the SAM derived from EG3C7-C18 is consistent with exposure of hydrocarbon chains at the interface. The data collected by X-ray photoelectron spectroscopy confirmed the formation of the new OEG-terminated dithiolate SAMs, and also revealed them as less densely packed monolayers due in part to the large molecular cross section of the OEG moieties and to their double-chained structure with dual surface bonds. Mixed SAMs formed from pairs of monothiols having chain compositions analogous to those of the chains of the new dithiols showed that an EG3C7SH/heptanethiol-mixed SAM and the EG3C7-C7 SAM produced almost identical characterization data, revealing the favorable film formation dynamics for adsorbate structures where the alkyl chains can assemble beneath the phase-incompatible OEG termini. For the mixed SAM formed from EG3C7SH/C18SH, the data indicate that the EG3C7SH component failed to incorporate in the film, demonstrating that the blending of phase-incompatible chains is sometimes best accomplished when both chains exist on a single adsorbate structure. Furthermore, the results of solution-phase thermal desorption tests revealed that the OEG-terminated films generated from the bidentate EG3C7-C7 and EG3C7-C18 adsorbates exhibit enhanced thermal stability when compared to the film generated from monodentate EG3C7SH. In a brief study of protein adsorption, the multicomponent SAMs showed a greater ability to resist the adsorption of fibrinogen on their surfaces when compared to the SAM derived from C18SH, but not better than the monolayer derived from EG3C7SH.
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Affiliation(s)
- Pawilai Chinwangso
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Han Ju Lee
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Andrew C Jamison
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Maria D Marquez
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - Chul Soon Park
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
| | - T Randall Lee
- Department of Chemistry and the Texas Center for Superconductivity, University of Houston , 4800 Calhoun Road, Houston, Texas 77204-5003, United States
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46
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Shakiba A, Zenasni O, D. Marquez M, Randall Lee T. Advanced drug delivery via self-assembled monolayer-coated nanoparticles. AIMS BIOENGINEERING 2017. [DOI: 10.3934/bioeng.2017.2.275] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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47
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Robson JA, Gonzàlez de Rivera F, Jantan KA, Wenzel MN, White AJP, Rossell O, Wilton-Ely JDET. Bifunctional Chalcogen Linkers for the Stepwise Generation of Multimetallic Assemblies and Functionalized Nanoparticles. Inorg Chem 2016; 55:12982-12996. [DOI: 10.1021/acs.inorgchem.6b02409] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jonathan A. Robson
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Ferran Gonzàlez de Rivera
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
- Departament de Química Inorgànica, Universitat de Barcelona, Martí Franquès 1-11, 08028 Barcelona, Spain
| | - Khairil A. Jantan
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Margot N. Wenzel
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Andrew J. P. White
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K
| | - Oriol Rossell
- Departament de Química Inorgànica, Universitat de Barcelona, Martí Franquès 1-11, 08028 Barcelona, Spain
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48
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Operamolla A, Punzi A, Farinola GM. Synthetic Routes to Thiol-Functionalized Organic Semiconductors for Molecular and Organic Electronics. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600460] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alessandra Operamolla
- Dipartimento di Chimica; Università degli Studi di Bari Aldo Moro; Via Orabona 4 70126 Bari Italy
- CNR-ICCOM Istituto di Chimica dei Composti Organometallici; Via Orabona 4 70126 Bari Italy
| | - Angela Punzi
- Dipartimento di Chimica; Università degli Studi di Bari Aldo Moro; Via Orabona 4 70126 Bari Italy
| | - Gianluca M. Farinola
- Dipartimento di Chimica; Università degli Studi di Bari Aldo Moro; Via Orabona 4 70126 Bari Italy
- CNR-ICCOM Istituto di Chimica dei Composti Organometallici; Via Orabona 4 70126 Bari Italy
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49
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Zarifi MH, Farsinezhad S, Wiltshire BD, Abdorrazaghi M, Kar P, Daneshmand M, Shankar K. Effect of phosphonate monolayer adsorbate on the microwave photoresponse of TiO2 nanotube membranes mounted on a planar double ring resonator. NANOTECHNOLOGY 2016; 27:375201. [PMID: 27487465 DOI: 10.1088/0957-4484/27/37/375201] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study, the effects of a phosphonate molecular monolayer adsorbed on the surface of a free-standing self-organized TiO2 nanotube membrane, on the microwave photoresponse of the membrane are presented. This phenomenon is monitored using planar microwave sensors. A double ring resonator is utilized to monitor the permittivity and conductivity variation on the monolayer coated membrane and the sensor environment separately. It is shown that the rise time and subsequent decay of the amplitude (A), resonance frequency (f 0) and quality factor (Q) of the resonator depend on the existence and the type of the monolayer coating the membrane. Three different monolayers of n-decylphosphonic acid (DPA), 1H, 1H', 2H, 2H'-perfluorodecyl phosphonic acid (PFDPA) and 16-phosphonohexadecanoic acid adsorbed on the titania nanotube membrane are investigated while monitoring their microwave properties during the illumination time period and in the relaxation period, which demonstrate different behavior in comparison to each other and to the bare nanotube membrane layer. The effect of humidity on the TiO2 nanotube membrane with and without different monolayers is also studied and the results demonstrate distinguishable microwave responses. While each of the monolayer-coated membranes exhibited an attenuation of the photo-induced change in A, f 0 and Q with respect to the bare membrane, PFDPA-coated membranes showed the smallest relative change in the monitored microwave parameters upon ultraviolet illumination and upon the introduction of different levels of humidity. These effects are explained on the basis of surface trap passivation by the monolayers as well as the hydrophobicity of the monolayers. Our work also shows how the interactions of self-assembled monolayers with charge carriers and surface states on metal oxides may be used to indirectly sense their presence through measurement of the microwave response.
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Affiliation(s)
- Mohammad H Zarifi
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 St, Edmonton, Alberta, T6G 1H9, Canada
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50
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Liebscher M, Bruhn C, Siemeling U, Baio J, Lu H, Weidner T. The Interaction of 1,1′‐Diphosphaferrocenes with Gold: Molecular Coordination Chemistry and Adsorption on Solid Substrates. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600892] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Michél Liebscher
- Institute of Chemistry University of Kassel 34109 Kassel Germany
- Center for Interdisciplinary Nanostructure Science and Technology (CINSaT) University of Kassel 34109 Kassel Germany
| | - Clemens Bruhn
- Institute of Chemistry University of Kassel 34109 Kassel Germany
| | - Ulrich Siemeling
- Institute of Chemistry University of Kassel 34109 Kassel Germany
- Center for Interdisciplinary Nanostructure Science and Technology (CINSaT) University of Kassel 34109 Kassel Germany
| | - Joe Baio
- School of Chemical, Biological, and Environmental Engineering Oregon State University 97331 Corvallis OR USA
| | - Hao Lu
- Max Planck Institute for Polymer Research 55128 Mainz Germany
| | - Tobias Weidner
- Max Planck Institute for Polymer Research 55128 Mainz Germany
- Department of Chemistry Aarhus University 8000 Aarhus C Denmark
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