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Li M, Liu M, Qi F, Lin FR, Jen AKY. Self-Assembled Monolayers for Interfacial Engineering in Solution-Processed Thin-Film Electronic Devices: Design, Fabrication, and Applications. Chem Rev 2024; 124:2138-2204. [PMID: 38421811 DOI: 10.1021/acs.chemrev.3c00396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Interfacial engineering has long been a vital means of improving thin-film device performance, especially for organic electronics, perovskites, and hybrid devices. It greatly facilitates the fabrication and performance of solution-processed thin-film devices, including organic field effect transistors (OFETs), organic solar cells (OSCs), perovskite solar cells (PVSCs), and organic light-emitting diodes (OLEDs). However, due to the limitation of traditional interfacial materials, further progress of these thin-film devices is hampered particularly in terms of stability, flexibility, and sensitivity. The deadlock has gradually been broken through the development of self-assembled monolayers (SAMs), which possess distinct benefits in transparency, diversity, stability, sensitivity, selectivity, and surface passivation ability. In this review, we first showed the evolution of SAMs, elucidating their working mechanisms and structure-property relationships by assessing a wide range of SAM materials reported to date. A comprehensive comparison of various SAM growth, fabrication, and characterization methods was presented to help readers interested in applying SAM to their works. Moreover, the recent progress of the SAM design and applications in mainstream thin-film electronic devices, including OFETs, OSCs, PVSCs and OLEDs, was summarized. Finally, an outlook and prospects section summarizes the major challenges for the further development of SAMs used in thin-film devices.
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Affiliation(s)
- Mingliang Li
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Ming Liu
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Feng Qi
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Francis R Lin
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Alex K-Y Jen
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, Hong Kong 999077, China
- Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong 999077, China
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Pattadar D, Arcidiacono A, Beery D, Hanson K, Saavedra SS. Molecular Orientation and Energy Transfer Dynamics of a Metal Oxide Bound Self-Assembled Trilayer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:10670-10679. [PMID: 37466635 DOI: 10.1021/acs.langmuir.3c01323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Self-assembly of molecular multilayers via metal ion linkages has become an important strategy for interfacial engineering of metalloid and metal oxide (MOx) substrates, with applications in numerous areas, including energy harvesting, catalysis, and chemical sensing. An important aspect for the rational design of these multilayers is knowledge of the molecular structure-function relationships. For example, in a multilayer composed of different chromophores in each layer, the molecular orientation of each layer, both relative to the adjacent layers and the substrate, influences the efficiency of vectorial energy and electron transfer. Here, we describe an approach using UV-vis attenuated total reflection (ATR) spectroscopy to determine the mean dipole tilt angle of chromophores in each layer in a metal ion-linked trilayer self-assembled on indium-tin oxide. To our knowledge, this is the first report demonstrating the measurement of the orientation of three different chromophores in a single assembly. The ATR approach allows the adsorption of each layer to be monitored in real-time, and any changes in the orientation of an underlying layer arising from the adsorption of an overlying layer can be detected. We also performed transient absorption spectroscopy to monitor interlayer energy transfer dynamics in order to relate structure to function. We found that near unity efficiency, sub-nanosecond energy transfer between the third and second layer was primarily dictated by the distance between the chromophores. Thus, in this case, the orientation had minimal impact at such proximity.
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Affiliation(s)
- Dhruba Pattadar
- Department of Chemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Ashley Arcidiacono
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Drake Beery
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Kenneth Hanson
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - S Scott Saavedra
- Department of Chemistry, University of Arizona, Tucson, Arizona 85721, United States
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Pattadar D, Zheng L, Robb AJ, Beery D, Yang W, Hanson K, Scott Saavedra S. Molecular Orientation of -PO 3H 2 and -COOH Functionalized Dyes on TiO 2, Al 2O 3, ZrO 2, and ITO: A Comparative Study. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:2705-2715. [PMID: 36908684 PMCID: PMC9996377 DOI: 10.1021/acs.jpcc.2c08632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Modification of transparent metal oxide (MOx) surfaces with organic monolayers is widely employed to tailor the properties of interfaces in organic electronic devices, and MOx substrates modified with light-absorbing chromophores are a key component of dye-sensitized solar cells (DSSCs). The effects of an organic modifier on the performance of a MOx-based device are frequently assessed by performing experiments on model monolayer|MOx interfaces, where an "inert" MOx (e.g., Al2O3) is used as a control for an "active" MOx (e.g., TiO2). An underlying assumption in these studies is that the structure of the MOx-monolayer complex is similar between different metal oxides. The validity of this assumption was examined in the present study. Using UV-Vis attenuated total reflection spectroscopy, we measured the mean dipole tilt angle of 4,4'-(anthracene-9,10-diyl)bis(4,1-phenylene)diphosphonic acid (A1P) adsorbed on indium tin oxide (ITO), TiO2, ZrO2, and Al2O3. When the surface roughness of the MOx substrate and the surface coverage (𝛤) of the A1P film were constant, the molecular orientation of A1P was the same on these substrates. The study was extended to 4,4'-(anthracene-9,10-diyl)bis(4,1-phenylene)dicarboxylic acid (A1C) adsorbed on the same group of MOx substrates. The mean tilt angle of A1C and A1P films on ITO was the same, which is likely due the intermolecular interactions resulting from the high and approximately equal 𝛤 of both films. Comparing A1C films at the same 𝛤 on TiO2 and Al2O3 having the same surface roughness, there was no difference in the mean tilt angle. MD simulations of A1C and A1P on TiO2 produced nearly identical tilt angle distributions, which supports the experimental findings. This study provides first experimental support for the assumption that the structure of the MOx-modifer film is the same on an "active" substrate vs. a "inert" control substrate.
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Affiliation(s)
- Dhruba Pattadar
- Department of Chemistry & Biochemistry, University of Arizona, Tucson, Arizona 85721, USA
| | - Lianqing Zheng
- Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida 32306, USA
| | - Alex J. Robb
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, USA
| | - Drake Beery
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, USA
| | - Wei Yang
- Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida 32306, USA
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, USA
| | - Kenneth Hanson
- Department of Chemistry & Biochemistry, Florida State University, Tallahassee, Florida 32306, USA
| | - S. Scott Saavedra
- Department of Chemistry & Biochemistry, University of Arizona, Tucson, Arizona 85721, USA
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Jangid V, Brunel D, Sanchez-Adaime E, Bharwal AK, Dumur F, Duché D, Abel M, Koudia M, Buffeteau T, Nijhuis CA, Berginc G, Lebouin C, Escoubas L. Improving Orientation, Packing Density, and Molecular Arrangement in Self-Assembled Monolayers of Bianchoring Ferrocene-Triazole Derivatives by "Click" Chemistry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3585-3596. [PMID: 35259297 DOI: 10.1021/acs.langmuir.2c00215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This work describes the self-assembled monolayers (SAMs) of two ferrocene derivatives with two anchoring groups (at the bottom and at the top of the SAM) deposited on ultraflat template-stripped gold substrates by cyclic voltammetry and analyzed by complementary surface characterization techniques. The SAM of each molecule is deposited by three different protocols: direct deposition (one step), click reaction on the surface (two steps), and reverse click reaction on the surface (two steps). The SAM structure is well studied to determine the SAM orientation, SAM arrangement, and ferrocene position within the SAM. Electron transfer kinetics have also been studied, which agree with the quality of each SAM. With the help of two anchoring groups and click-chemistry active functional groups, we have shown that the two molecules can be deposited by controlling the position of ferrocene at either end. We further investigated the involvement of the triazole five-membered ring in the electron transfer mechanism. We have found that a carbon spacer between ferrocene and triazole improves the SAM packing. This study enhances the understanding of tethering thiol and thiol acetate anchoring groups on gold by a controlled orientation, which may help in the development of functional molecular devices requiring two anchoring groups.
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Affiliation(s)
- Vikas Jangid
- Aix Marseille University, CNRS, Université de Toulon, IM2NP, UMR 7334, F-13397 Marseille, France
- Aix Marseille University, CNRS, MADIREL, UMR 7246, F-13397 Marseille, France
| | - Damien Brunel
- Aix Marseille University, CNRS, ICR, UMR 7273, F-13397 Marseille, France
| | - Esteban Sanchez-Adaime
- Aix Marseille University, CNRS, Université de Toulon, IM2NP, UMR 7334, F-13397 Marseille, France
| | - Anil Kumar Bharwal
- Aix Marseille University, CNRS, Université de Toulon, IM2NP, UMR 7334, F-13397 Marseille, France
| | - Frédéric Dumur
- Aix Marseille University, CNRS, ICR, UMR 7273, F-13397 Marseille, France
| | - David Duché
- Aix Marseille University, CNRS, Université de Toulon, IM2NP, UMR 7334, F-13397 Marseille, France
| | - Mathieu Abel
- Aix Marseille University, CNRS, Université de Toulon, IM2NP, UMR 7334, F-13397 Marseille, France
| | - Mathieu Koudia
- Aix Marseille University, CNRS, Université de Toulon, IM2NP, UMR 7334, F-13397 Marseille, France
| | - Thierry Buffeteau
- Université Bordeaux, Institut des Sciences Moléculaires ISM, CNRS UMR5255, F-33405 Talence, France
| | - Christian A Nijhuis
- Hybrid Materials for Opto-Electronics Group, Department of Molecules and Materials, MESA + Institute for Nanotechnology and Center for Brain-Inspired Nano Systems, Faculty of Science and Technology, University of Twente, 7500 AE Enschede, The Netherlands
| | | | - Chrystelle Lebouin
- Aix Marseille University, CNRS, MADIREL, UMR 7246, F-13397 Marseille, France
| | - Ludovic Escoubas
- Aix Marseille University, CNRS, Université de Toulon, IM2NP, UMR 7334, F-13397 Marseille, France
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Moreira LG, Almeida AM, Camacho SA, Estevão BM, Oliveira ON, Aoki PHB. Chain Cleavage of Bioinspired Bacterial Membranes Photoinduced by Eosin Decyl Ester. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9578-9585. [PMID: 32672975 DOI: 10.1021/acs.langmuir.0c01600] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Photodynamic therapy (PDT) is promising for bacterial inactivation since cellular internalization of photosensitizers (PS) is not crucial for the treatment effectiveness. Photoinduced damage in the lipid envelope may already induce microbial inactivation, which requires PS capable of easily penetrating into the membrane. Herein, we report on the insertion of the PS eosin decyl ester (EosDec) into Langmuir films of 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE), 1,2-dioleoyl-sn-glycero-3-phospho-(1'-rac-glycerol) (DOPG), and cardiolipin (CLP) used as mimetic systems of bacterial membranes. Surface pressure isotherms and polarization-modulated infrared reflection absorption spectroscopy (PM-IRRAS) indicated that the hydrophobic nature of EosDec favored deeper penetration in all the phospholipid monolayers. The incorporation of EosDec led to monolayer expansion, especially in the anionic DOPG and CLP owing to repulsive electrostatic interactions, and induced disorder in the lipid chains. Light irradiation of DOPE, DOPG, and CLP monolayers containing EosDec increased the rate of material loss to the subphase, which is attributed to cleavage of lipid chains triggered by contact-dependent reactions between excited states of EosDec and lipid unsaturations. The latter is key for membrane permeabilization and efficiency in microbial inactivation.
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Affiliation(s)
- Lucas G Moreira
- School of Sciences, Humanities and Languages, São Paulo State University (UNESP), Assis, SP 19806-900, Brazil
| | - Alexandre M Almeida
- School of Sciences, Humanities and Languages, São Paulo State University (UNESP), Assis, SP 19806-900, Brazil
| | - Sabrina A Camacho
- School of Sciences, Humanities and Languages, São Paulo State University (UNESP), Assis, SP 19806-900, Brazil
- IFSC, São Carlos Institute of Physics, University of São Paulo (USP), São Carlos, SP 13566-590, Brazil
| | - Bianca M Estevão
- IFSC, São Carlos Institute of Physics, University of São Paulo (USP), São Carlos, SP 13566-590, Brazil
- Department of Chemistry, State University of Maringá (UEM), Maringá, PR 87020-900, Brazil
| | - Osvaldo N Oliveira
- IFSC, São Carlos Institute of Physics, University of São Paulo (USP), São Carlos, SP 13566-590, Brazil
| | - Pedro H B Aoki
- School of Sciences, Humanities and Languages, São Paulo State University (UNESP), Assis, SP 19806-900, Brazil
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6
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Bertram M, Schuschke C, Waidhas F, Schwarz M, Hohner C, Montero MA, Brummel O, Libuda J. Molecular anchoring to oxide surfaces in ultrahigh vacuum and in aqueous electrolytes: phosphonic acids on atomically-defined cobalt oxide. Phys Chem Chem Phys 2019; 21:23364-23374. [PMID: 31637373 DOI: 10.1039/c9cp03779a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this work, we investigated the interaction of phenylphosphonic acid (PPA, C6H5PO3H2) with atomically-defined Co3O4(111) thin films, grown on Ir(100), under ultrahigh vacuum (UHV) conditions and in the electrochemical environment. In the first step, we employed infrared reflection absorption spectroscopy (IRAS) and followed the formation of a saturated monolayer (380 K) in UHV. We observed that the binding motif changes from a chelating tridentate in the sub-monolayer regime to a chelating bidentate at full monolayer coverages. In the electrochemical environment, we analyzed the interaction of PPA with the same Co3O4(111) surface by electrochemical infrared reflection absorption spectroscopy (EC-IRRAS) (0.3 VRHE-1.3 VRHE). When adsorbed at pH 10 from an ammonia buffered aqueous solution, PPA binds to the surface in form of a fully deprotonated chelating bidentate. With increasing electrode potential, we observed two fully reversible processes. At low buffer concentration, protons are released upon oxidation of surface Co2+ ions and lead to protonation of the anchored phosphonates. At high buffer concentration, most of the protons released are accepted by NH3. Simultaneously, the surface phosphonate changes its adsorption motif from bidentate to tridentate while adopting a more upright geometry.
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Affiliation(s)
- Manon Bertram
- Interface Research and Catalysis, Erlangen Catalysis Resource Center, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, D-91058 Erlangen, Germany.
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7
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Watts KE, Blackburn TJ, Pemberton JE. Optical Spectroscopy of Surfaces, Interfaces, and Thin Films: A Status Report. Anal Chem 2019; 91:4235-4265. [PMID: 30790520 DOI: 10.1021/acs.analchem.9b00735] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Kristen E Watts
- Department of Chemistry and Biochemistry University of Arizona 1306 East University Boulevard , Tucson , Arizona 85721 , United States
| | - Thomas J Blackburn
- Department of Chemistry and Biochemistry University of Arizona 1306 East University Boulevard , Tucson , Arizona 85721 , United States
| | - Jeanne E Pemberton
- Department of Chemistry and Biochemistry University of Arizona 1306 East University Boulevard , Tucson , Arizona 85721 , United States
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8
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Venkata Jagadeesh R, Lakshminarayanan V. Effect of solvents on the self-assembly of long chain alkylphosphonic acids on indium tin oxide surface - In situ studies on the adsorption kinetics and electron transfer process. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.01.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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9
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Pereira LS, Camacho SA, Malfatti-Gasperini AA, Jochelavicius K, Nobre TM, Oliveira ON, Aoki PH. Evidence of photoinduced lipid hydroperoxidation in Langmuir monolayers containing Eosin Y. Colloids Surf B Biointerfaces 2018; 171:682-689. [DOI: 10.1016/j.colsurfb.2018.08.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/20/2018] [Accepted: 08/03/2018] [Indexed: 01/01/2023]
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Benneckendorf FS, Hillebrandt S, Ullrich F, Rohnacher V, Hietzschold S, Jänsch D, Freudenberg J, Beck S, Mankel E, Jaegermann W, Pucci A, Bunz UHF, Müllen K. Structure-Property Relationship of Phenylene-Based Self-Assembled Monolayers for Record Low Work Function of Indium Tin Oxide. J Phys Chem Lett 2018; 9:3731-3737. [PMID: 29923411 DOI: 10.1021/acs.jpclett.8b01242] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Studying the structure-property relations of tailored dipolar phenyl and biphenylphosphonic acids, we report self-assembled monolayers with a significant decrease in the work function (WF) of indium-tin oxide (ITO) electrodes. Whereas the strengths of the dipoles are varied through the different molecular lengths and the introduction of electron-withdrawing fluorine atoms, the surface energy is kept constant through the electron-donating N, N-dimethylamine head groups. The self-assembled monolayer formation and its modification of the electrodes are investigated via infrared reflection absorption spectroscopy, contact angle measurements, and photoelectron spectroscopy. The WF decrease in ITO correlates with increasing molecular dipoles. The lowest ever recorded WF of 3.7 eV is achieved with the fluorinated biphenylphosphonic acid.
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Affiliation(s)
- Frank S Benneckendorf
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Organisch-Chemisches Institut , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
| | - Sabina Hillebrandt
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Kirchhoff-Institut für Physik , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 227 , 69120 Heidelberg , Germany
| | - Florian Ullrich
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Institute of Materials Science , Technische Universität Darmstadt , Petersenstraße 32 , 64287 Darmstadt , 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
| | - Sebastian Hietzschold
- Institut für Hochfrequenztechnik , Technische Universität Braunschweig , Schleinitzstr. 22 , 38106 Braunschweig , Germany
| | - Daniel Jänsch
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Organisch-Chemisches Institut , Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
| | - Jan Freudenberg
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- 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
| | - Eric Mankel
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Institute of Materials Science , Technische Universität Darmstadt , Petersenstraße 32 , 64287 Darmstadt , Germany
| | - Wolfram Jaegermann
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Institute of Materials Science , Technische Universität Darmstadt , Petersenstraße 32 , 64287 Darmstadt , Germany
| | - 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
| | - Klaus Müllen
- InnovationLab , Speyerer Straße 4 , 69115 Heidelberg , Germany
- Max Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
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11
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Schuschke C, Schwarz M, Hohner C, Silva TN, Fromm L, Döpper T, Görling A, Libuda J. Phosphonic Acids on an Atomically Defined Oxide Surface: The Binding Motif Changes with Surface Coverage. J Phys Chem Lett 2018; 9:1937-1943. [PMID: 29595985 DOI: 10.1021/acs.jpclett.8b00668] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We have studied the anchoring mechanism of a phosphonic acid on an atomically defined oxide surface. Using time-resolved infrared reflection absorption spectroscopy, we investigated the reaction of deuterated phenylphosphonic acid (DPPA, C6H5PO3D2) with an atomically defined Co3O4(111) surface in situ during film growth by physical vapor deposition. We show that the binding motif of the phosphonate anchor group changes as a function of coverage. At low coverage, DPPA binds in the form of a chelating tridentate phosphonate, while a transition to a chelating bidentate occurs close to monolayer saturation coverage. However, the coverage-dependent change in the binding motif is not associated with a major change of the molecular orientation, suggesting that the rigid phosphonate linker always maintains the DPPA in a strongly tilted orientation irrespective of the surface coverage.
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Affiliation(s)
- Christian Schuschke
- Lehrstuhl für Physikalische Chemie II , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 3 , D-91058 Erlangen , Germany
| | - Matthias Schwarz
- Lehrstuhl für Physikalische Chemie II , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 3 , D-91058 Erlangen , Germany
| | - Chantal Hohner
- Lehrstuhl für Physikalische Chemie II , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 3 , D-91058 Erlangen , Germany
| | - Thais N Silva
- Lehrstuhl für Physikalische Chemie II , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 3 , D-91058 Erlangen , Germany
| | - Lukas Fromm
- Lehrstuhl für Theoretische Chemie , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 3 , D-91058 Erlangen , Germany
| | - Tibor Döpper
- Lehrstuhl für Theoretische Chemie , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 3 , D-91058 Erlangen , Germany
| | - Andreas Görling
- Lehrstuhl für Theoretische Chemie , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 3 , D-91058 Erlangen , Germany
- Erlangen Catalysis Resource Center and Interdisciplinary Center for Interface Controlled Processes , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 3 , D-91058 Erlangen , Germany
| | - Jörg Libuda
- Lehrstuhl für Physikalische Chemie II , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 3 , D-91058 Erlangen , Germany
- Erlangen Catalysis Resource Center and Interdisciplinary Center for Interface Controlled Processes , Friedrich-Alexander-Universität Erlangen-Nürnberg , Egerlandstraße 3 , D-91058 Erlangen , Germany
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12
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Alter C, Neumann B, Stammler H, Hoge B. Bis(diethylamino)pentafluorophenylphosphane as Valuable Precursor for the Design of Tetrafluorophenylphosphanes, Tetrafluorophenylphosphinic and ‐phosphonic Acids. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701402] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Christian Alter
- Fakultät für Chemie Centrum für Molekulare Materialien Universität Bielefeld Universitätsstraße 25 33615 Bielefeld Germany
| | - Beate Neumann
- Fakultät für Chemie Centrum für Molekulare Materialien Universität Bielefeld Universitätsstraße 25 33615 Bielefeld Germany
| | - Hans‐Georg Stammler
- Fakultät für Chemie Centrum für Molekulare Materialien Universität Bielefeld Universitätsstraße 25 33615 Bielefeld Germany
| | - Berthold Hoge
- Fakultät für Chemie Centrum für Molekulare Materialien Universität Bielefeld Universitätsstraße 25 33615 Bielefeld Germany
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Cattani-Scholz A. Functional Organophosphonate Interfaces for Nanotechnology: A Review. ACS APPLIED MATERIALS & INTERFACES 2017; 9:25643-25655. [PMID: 28671811 DOI: 10.1021/acsami.7b04382] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Optimization of interfaces in inorganic-organic device systems depends strongly on understanding both the molecular processes that are involved in surface modification and the effects that such modifications have on the electronic states of the material. In particular, the last several years have seen passivation and functionalization of semiconductor surfaces to be strategies by which to realize devices with superior function by controlling Fermi level energies, band-gap magnitudes, and work functions of semiconducting substrates. Among all of the synthetic routes and deposition methods available for the optimization of functional interfaces in hybrid systems, organophosphonate chemistry has been found to be a powerful tool to control at the molecular level the properties of materials in many different applications. In this Review, we focus on the relevance of organophosphonate chemistry in nanotechnology, giving an overview about some recent advances in surface modification, interface engineering, nanostructure optimization, and biointegration.
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Affiliation(s)
- Anna Cattani-Scholz
- Walter Schottky Institut and Technische Universität München , 85748 Garching, Germany
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14
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Chen X, Xu Z, Wu K, Zhang S, Li H, Meng Y, Wang Z, Li L, Ma X. Facile Peeling Method as a Post-Remedy Strategy for Producing an Ultrasmooth Self-Assembled Monolayer for High-Performance Organic Transistors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:9492-9500. [PMID: 27557089 DOI: 10.1021/acs.langmuir.6b02585] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The modification of dielectric surface with a self-assembled monolayer (SAM) such as octadecyltrichlorosilane (OTS) is a widely used method to tune the electrical property of diverse electronic devices based on organic semiconductors, graphene, transition metal dichalcogenides (TMDs), and so forth. The surface roughness of self-assembled OTS monolayer is a key factor in determining its effect on device performance, but the preparation of an ultrasmooth OTS monolayer is a technologically challenging task. In this work, an ultrasmooth OTS monolayer is prepared via a facile peeling method, which may serve as a postremedy strategy to remove the protuberant aggregates. Such a method has not been reported before. With organic semiconductors as a testing model, ultrasmooth OTS may significantly improve the charge mobility of organic field-effect transistors (OFETs). P-type dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene (DNTT) OFET with an ultrasmooth OTS monolayer yields good reproducibility and unprecendented maximum mobility of 8.16 cm(2) V(-1) s(-1), which is remarkably superior to that of the OFET with a pristine OTS monolayer. This work develops a simple method to resolve the common and significant problem of the quality of OTS modification, which would be highly promising for electronic applications as well as other fields such as surface and interface engineering.
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Affiliation(s)
- Xiaosong Chen
- Department of Physics, East China Normal University , Shanghai, 200241, China
- Advanced Nano-Materials Division, Key Laboratory of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS) , Suzhou 215123, China
| | - Zeyang Xu
- Advanced Nano-Materials Division, Key Laboratory of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS) , Suzhou 215123, China
| | - Kunjie Wu
- Advanced Nano-Materials Division, Key Laboratory of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS) , Suzhou 215123, China
| | - Suna Zhang
- Advanced Nano-Materials Division, Key Laboratory of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS) , Suzhou 215123, China
| | - Hongwei Li
- Advanced Nano-Materials Division, Key Laboratory of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS) , Suzhou 215123, China
| | - Yancheng Meng
- Advanced Nano-Materials Division, Key Laboratory of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS) , Suzhou 215123, China
| | - Zhongwu Wang
- Advanced Nano-Materials Division, Key Laboratory of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS) , Suzhou 215123, China
| | - Liqiang Li
- Advanced Nano-Materials Division, Key Laboratory of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS) , Suzhou 215123, China
| | - Xueming Ma
- Department of Physics, East China Normal University , Shanghai, 200241, China
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15
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Paniagua SA, Giordano AJ, Smith OL, Barlow S, Li H, Armstrong NR, Pemberton JE, Brédas JL, Ginger D, Marder SR. Phosphonic Acids for Interfacial Engineering of Transparent Conductive Oxides. Chem Rev 2016; 116:7117-58. [DOI: 10.1021/acs.chemrev.6b00061] [Citation(s) in RCA: 142] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sergio A. Paniagua
- School
of Chemistry and Biochemistry and Center for Organic Photonics and
Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Anthony J. Giordano
- School
of Chemistry and Biochemistry and Center for Organic Photonics and
Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - O’Neil L. Smith
- School
of Chemistry and Biochemistry and Center for Organic Photonics and
Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Stephen Barlow
- School
of Chemistry and Biochemistry and Center for Organic Photonics and
Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Hong Li
- School
of Chemistry and Biochemistry and Center for Organic Photonics and
Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
- Division
of Physical Sciences and Engineering, King Abdullah University of Science and Technology, KAUST, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Neal R. Armstrong
- Department
of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Jeanne E. Pemberton
- Department
of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Jean-Luc Brédas
- School
of Chemistry and Biochemistry and Center for Organic Photonics and
Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
- Division
of Physical Sciences and Engineering, King Abdullah University of Science and Technology, KAUST, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - David Ginger
- Department
of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Seth R. Marder
- School
of Chemistry and Biochemistry and Center for Organic Photonics and
Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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16
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Abraham F, Ford WE, Scholz F, Nelles G, Sandford G, von Wrochem F. Surface Energy and Work Function Control of AlOx/Al Surfaces by Fluorinated Benzylphosphonic Acids. ACS APPLIED MATERIALS & INTERFACES 2016; 8:11857-11867. [PMID: 27093557 DOI: 10.1021/acsami.6b02012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The performance of organic electronic devices can be significantly improved by modifying metal electrodes with organic monolayers, which alter the physical and chemical nature of the interface between conductor and semiconductor. In this paper we examine a series of 12 phosphonic acid compounds deposited on the native oxide layer of aluminum (AlOx/Al), an electrode material with widespread applications in organic electronics. This series includes dodecylphosphonic acid as a reference and 11 benzylphosphonic acids, seven of which are fluorinated, including five newly synthesized derivatives. The monolayers are experimentally characterized by contact angle goniometry and by X-ray photoemission spectroscopy (XPS), and work function data obtained by low-intensity XPS are correlated with molecular dipoles obtained from DFT calculations. We find that monolayers are formed with molecular areas ranging from 17.7 to 42.9 Å(2)/molecule, and, by the choice of appropriate terminal groups, the surface energy can be tuned from 23.5 mJ/m(2) to 70.5 mJ/m(2). Depending on the number and position of fluorine substituents on the aromatic rings, a variation in the work function of AlOx/Al substrates over a range of 0.91 eV is achieved, and a renormalization procedure based on molecular density yields a surprising agreement of work function changes with interface dipoles as expected from Helmholtz' equation. The ability to adjust energetics and adhesion at organic semiconductor/AlOx interfaces has immediate applications in devices such as OLEDs, OTFTs, organic solar cells, and printed organic circuits.
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Affiliation(s)
- Ffion Abraham
- Department of Chemistry, Durham University , South Road, Durham DH1 3LE, U.K
| | - William E Ford
- Materials Science Laboratory, Sony Deutschland GmbH , Hedelfinger Strasse 61, 70327 Stuttgart, Germany
| | - Frank Scholz
- Materials Science Laboratory, Sony Deutschland GmbH , Hedelfinger Strasse 61, 70327 Stuttgart, Germany
| | - Gabriele Nelles
- Materials Science Laboratory, Sony Deutschland GmbH , Hedelfinger Strasse 61, 70327 Stuttgart, Germany
| | - Graham Sandford
- Department of Chemistry, Durham University , South Road, Durham DH1 3LE, U.K
| | - Florian von Wrochem
- Materials Science Laboratory, Sony Deutschland GmbH , Hedelfinger Strasse 61, 70327 Stuttgart, Germany
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17
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Russell SR, Claridge SA. Peptide interfaces with graphene: an emerging intersection of analytical chemistry, theory, and materials. Anal Bioanal Chem 2016; 408:2649-58. [DOI: 10.1007/s00216-015-9262-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/27/2015] [Accepted: 12/08/2015] [Indexed: 10/22/2022]
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