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Yang W, Cai B, Lachowski KJ, Yin Q, De Yoreo JJ, Pozzo LD, Chen CL. Insights into the Biomimetic Synthesis of 2D ZnO Nanomaterials through Peptoid Engineering. J Phys Chem Lett 2023; 14:9732-9739. [PMID: 37882440 DOI: 10.1021/acs.jpclett.3c01882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
Achieving predictable biomimetic crystallization using sequence-defined synthetic molecules in mild conditions represents a long-standing challenge in materials synthesis. Herein we report a peptoid-based approach for biomimetic control over the formation of nanostructured ZnO materials in ambient aqueous conditions. A series of two-dimensional (2D) ZnO nanomaterials have been successfully obtained using amphiphilic peptoids with different numbers, ratios, and patterns of various hydrophilic and hydrophobic side chains. By investigating the relationship between peptoid hydrophobicity and the thickness of the resultant ZnO nanomaterials, we found the critical role of peptoid hydrophobicity in the peptoid-controlled ZnO formation. Our results suggest that tuning the hydrophobicity of peptoids can be used to moderate peptoid-ZnO surface interactions, thus controlling the formation of ultrathin (<2.5 nm) 2D ZnO nanomaterials. The peptoid-controlled formation of ZnO nanomaterials was further investigated using ultrasmall-angle X-ray scattering (USAXS). Our work suggests a new approach to synthesizing 2D metal oxide nanomaterials using sequence-defined synthetic molecules.
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Affiliation(s)
- Wenchao Yang
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Bin Cai
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- School of Chemistry and Chemical Engineering, Shandong University, 250100 Jinan, China
| | - Kacper J Lachowski
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
- Molecular Engineering and Sciences Institute, University of Washington, Seattle, Washington 98105, United States
| | - Qiuxiang Yin
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin University, Tianjin 300072, People's Republic of China
| | - James J De Yoreo
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Materials Science, University of Washington, Seattle, Washington 98195, United States
| | - Lilo D Pozzo
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
- Molecular Engineering and Sciences Institute, University of Washington, Seattle, Washington 98105, United States
- Department of Materials Science, University of Washington, Seattle, Washington 98195, United States
| | - Chun-Long Chen
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
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2
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Abstract
Zinc oxide (ZnO)/laser-induced graphene (LIG) composites were prepared by mixing ZnO, grown by laser-assisted flow deposition, with LIG produced by laser irradiation of a polyimide, both in ambient conditions. Different ZnO:LIG ratios were used to infer the effect of this combination on the overall composite behavior. The optical properties, assessed by photoluminescence (PL), showed an intensity increase of the excitonic-related recombination with increasing LIG amounts, along with a reduction in the visible emission band. Charge-transfer processes between the two materials are proposed to justify these variations. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy evidenced increased electron transfer kinetics and an electrochemically active area with the amount of LIG incorporated in the composites. As the composites were designed to be used as transducer platforms in biosensing devices, their ability to detect and quantify hydrogen peroxide (H2O2) was assessed by both PL and CV analysis. The results demonstrated that both methods can be employed for sensing, displaying slightly distinct operation ranges that allow extending the detection range by combining both transduction approaches. Moreover, limits of detection as low as 0.11 mM were calculated in a tested concentration range from 0.8 to 32.7 mM, in line with the values required for their potential application in biosensors.
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3
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Zhang W, Chen X, Ma Y, Xu Z, Wu L, Yang Y, Tsang SW, Chen S. Positive Aging Effect of ZnO Nanoparticles Induced by Surface Stabilization. J Phys Chem Lett 2020; 11:5863-5870. [PMID: 32618473 DOI: 10.1021/acs.jpclett.0c01640] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
For quantum-dot photodiodes comprising an electron-transporting layer assembled of ZnO nanoparticles, the light emitter/absorber generally exhibits enhanced optoelectronic performance after the device is shelf-aged. To understand the so-called positive aging effect, the optoelectronic properties of ZnO nanoparticles are investigated at the thin film and device level as a function of aging time. It is evidenced that the aging process is driven by a surface-stabilizing mechanism of ZnO nanoparticles, in which the active surface adsorption sites for oxygen are gradually but irreversibly stabilized, i.e.. with surface termination of HO-ZnO, leading to reduced nonradiative recombination and increased built-in potential in the adjacent photoactive layer. This work provides insight into new synthetic routes for minimizing the negative impact caused by the aging process.
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Affiliation(s)
- Wenjuan Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Xingtong Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yuhui Ma
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR, China
| | - Zhiwei Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Longjia Wu
- TCL Research, Shenzhen, Guangdong 518067, China
| | - Yixing Yang
- TCL Research, Shenzhen, Guangdong 518067, China
| | - Sai-Wing Tsang
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR, China
| | - Song Chen
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China
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Carniato S, Selles P, Ferté A, Berrah N, Wuosmaa AH, Nakano M, Hikosaka Y, Ito K, Žitnik M, Bučar K, Andric L, Palaudoux J, Penent F, Lablanquie P. Double-core ionization photoelectron spectroscopy of C6H6: Breakdown of the “intuitive” ortho-meta-para binding energy ordering of K−1K−1 states. J Chem Phys 2019; 151:214303. [DOI: 10.1063/1.5128614] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S. Carniato
- Laboratoire de Chimie Physique-Matière et Rayonnement (UMP 7614), Sorbonne Université, CNRS, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - P. Selles
- Laboratoire de Chimie Physique-Matière et Rayonnement (UMP 7614), Sorbonne Université, CNRS, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - A. Ferté
- Laboratoire de Chimie Physique-Matière et Rayonnement (UMP 7614), Sorbonne Université, CNRS, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - N. Berrah
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - A. H. Wuosmaa
- Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
| | - M. Nakano
- Photon Factory, Institute of Materials Structure Science, Tsukuba 305-0801, Japan
| | - Y. Hikosaka
- Institute of Liberal Arts and Sciences, University of Toyama, Toyama 930-0194, Japan
| | - K. Ito
- Photon Factory, Institute of Materials Structure Science, Tsukuba 305-0801, Japan
- Synchrotron SOLEIL, l’Orme des Merisiers, Saint-Aubin, Boîte Postale 48, 91192 Gif-sur-Yvette Cedex, France
| | - M. Žitnik
- Jozef Stefan Institute, Jamova Cesta 39, SI-1001 Ljubljana, Slovenija
| | - K. Bučar
- Jozef Stefan Institute, Jamova Cesta 39, SI-1001 Ljubljana, Slovenija
| | - L. Andric
- Laboratoire de Chimie Physique-Matière et Rayonnement (UMP 7614), Sorbonne Université, CNRS, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - J. Palaudoux
- Laboratoire de Chimie Physique-Matière et Rayonnement (UMP 7614), Sorbonne Université, CNRS, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - F. Penent
- Laboratoire de Chimie Physique-Matière et Rayonnement (UMP 7614), Sorbonne Université, CNRS, 4 Place Jussieu, 75252 Paris Cedex 05, France
| | - P. Lablanquie
- Laboratoire de Chimie Physique-Matière et Rayonnement (UMP 7614), Sorbonne Université, CNRS, 4 Place Jussieu, 75252 Paris Cedex 05, France
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5
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Limo MJ, Sola-Rabada A, Boix E, Thota V, Westcott ZC, Puddu V, Perry CC. Interactions between Metal Oxides and Biomolecules: from Fundamental Understanding to Applications. Chem Rev 2018; 118:11118-11193. [PMID: 30362737 DOI: 10.1021/acs.chemrev.7b00660] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Metallo-oxide (MO)-based bioinorganic nanocomposites promise unique structures, physicochemical properties, and novel biochemical functionalities, and within the past decade, investment in research on materials such as ZnO, TiO2, SiO2, and GeO2 has significantly increased. Besides traditional approaches, the synthesis, shaping, structural patterning, and postprocessing chemical functionalization of the materials surface is inspired by strategies which mimic processes in nature. Would such materials deliver new technologies? Answering this question requires the merging of historical knowledge and current research from different fields of science. Practically, we need an effective defragmentation of the research area. From our perspective, the superficial accounting of material properties, chemistry of the surfaces, and the behavior of biomolecules next to such surfaces is a problem. This is particularly of concern when we wish to bridge between technologies in vitro and biotechnologies in vivo. Further, besides the potential practical technological efficiency and advantages such materials might exhibit, we have to consider the wider long-term implications of material stability and toxicity. In this contribution, we present a critical review of recent advances in the chemistry and engineering of MO-based biocomposites, highlighting the role of interactions at the interface and the techniques by which these can be studied. At the end of the article, we outline the challenges which hamper progress in research and extrapolate to developing and promising directions including additive manufacturing and synthetic biology that could benefit from molecular level understanding of interactions occurring between inanimate (abiotic) and living (biotic) materials.
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Affiliation(s)
- Marion J Limo
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom.,Interface and Surface Analysis Centre, School of Pharmacy , University of Nottingham , University Park, Nottingham NG7 2RD , United Kingdom
| | - Anna Sola-Rabada
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
| | - Estefania Boix
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom.,Department of Bioproducts and Biosystems , Aalto University , P.O. Box 16100, FI-00076 Aalto , Finland
| | - Veeranjaneyulu Thota
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
| | - Zayd C Westcott
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
| | - Valeria Puddu
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
| | - Carole C Perry
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
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6
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Zhu X, Jhang JH, Zhou C, Dagdeviren OE, Chen Z, Schwarz UD, Altman EI. Using ZnO-Cr 2O 3-ZnO heterostructures to characterize polarization penetration depth through non-polar films. Phys Chem Chem Phys 2017; 19:32492-32504. [PMID: 29188828 DOI: 10.1039/c7cp06059a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The ability to affect the surface properties of non-polar Cr2O3 films through polar ZnO(0001) and (0001[combining macron]) supports was investigated by characterizing the polarity of ZnO films grown on top of the Cr2O3 surfaces. The growth and geometric and electronic structures of the ZnO films were characterized with X-ray photoelectron spectroscopy, ultra-violet photoelectron spectroscopy, reflection high-energy electron diffraction, low-energy electron diffraction, and X-ray diffraction. The ZnO growth mode was Stranski-Krastanov, which can be attributed to the ZnO layers initially adopting a non-polar structure with a lower surface tension before transitioning to the polar bulk structure with a higher surface energy. A similar result has been reported for ZnO growth on α-Al2O3(0001), which is isostructural with Cr2O3. The polarity of the added ZnO layer was determined by examining the surface morphology following wet chemical etching with atomic force microscopy and by characterizing the surface reactivity via temperature-programmed desorption of alcohols, which strongly depends on the ZnO polarization direction. Consistent with prior work on ZnO growth on bulk Cr2O3(0001), both measurements indicate that thick Cr2O3 layers support ZnO(0001[combining macron]) growth regardless of the underlying ZnO substrate polarization; however, the polarization direction of ZnO films grown on Cr2O3 films less than three repeat units thick follows the direction of the underlying substrate polarization. These findings show that it is possible to manipulate the surface properties of non-polar materials with a polar substrate, but that the effect does not penetrate past just a couple of repeat units.
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Affiliation(s)
- Xiaodong Zhu
- Center for Research on Interface Structures and Phenomena (CRISP), Yale University, New Haven, CT 06520, USA.
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7
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Global and local aspects of the surface potential landscape for energy level alignment at organic-ZnO interfaces. Chem Phys 2017. [DOI: 10.1016/j.chemphys.2016.11.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Hewlett RM, McLachlan MA. Surface Structure Modification of ZnO and the Impact on Electronic Properties. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:3893-3921. [PMID: 26936217 DOI: 10.1002/adma.201503404] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/03/2015] [Indexed: 06/05/2023]
Abstract
Zinc oxide (ZnO) is a widely utilized, versatile material implemented in a diverse range of technological applications, particularly in optoelectronic devices, where its inherent transparency, tunable electronic properties, and accessible nanostructures can be combined to confer superior device properties. ZnO is a complex material with a rich and intricate defect chemistry, and its properties can be extremely sensitive to processing methods and conditions; consequently, surface modification of ZnO using both inorganic and organic species has been explored to control and regulate its surface properties, particularly at heterointerfaces in electronic devices. Here, the properties of ZnO are described in detail, particularly its surface chemistry, along with the role of defects in governing its electronic properties, and methods employed to modulate the behavior of as-grown ZnO. An outline is also given on how the native and modified oxide interact with molecular materials. To illustrate the diverse range of surface modification methods and their subsequent influence on electronic properties, a comprehensive review of the modification of ZnO surfaces at molecular interfaces in hybrid photovoltaic (hPV) and organic photovoltaic (OPV) devices is presented. This is a case study rather than a progress report, aiming to highlight the progress made toward controlling and altering the surface properties of ZnO, and to bring attention to the ways in which this may be achieved by using various interfacial modifiers (IMs).
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Affiliation(s)
- Robert M Hewlett
- Department of Materials & Centre for Plastic Electronics, Royal School of Mines, Imperial College London, Prince Consort Road, London, SW7 2BP, UK
| | - Martyn A McLachlan
- Department of Materials & Centre for Plastic Electronics, Royal School of Mines, Imperial College London, Prince Consort Road, London, SW7 2BP, UK
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9
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Meinhardt U, Lodermeyer F, Schaub TA, Kunzmann A, Dral PO, Sale AC, Hampel F, Guldi DM, Costa RD, Kivala M. N-Heterotriangulene chromophores with 4-pyridyl anchors for dye-sensitized solar cells. RSC Adv 2016. [DOI: 10.1039/c6ra14799b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of N-heterotriangulenes decorated with 4-pyridyl anchors were synthesized and their performance in n-type TiO2- and ZnO-based dye-sensitized solar cells investigated.
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Affiliation(s)
- Ute Meinhardt
- Department of Chemistry and Pharmacy
- Friedrich-Alexander University Erlangen-Nürnberg
- 91054 Erlangen
- Germany
| | - Fabian Lodermeyer
- Department of Chemistry and Pharmacy
- Friedrich-Alexander University Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Tobias A. Schaub
- Department of Chemistry and Pharmacy
- Friedrich-Alexander University Erlangen-Nürnberg
- 91054 Erlangen
- Germany
| | - Andreas Kunzmann
- Department of Chemistry and Pharmacy
- Friedrich-Alexander University Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Pavlo O. Dral
- Max-Planck-Institut für Kohlenforschung
- 45470 Mülheim an der Ruhr
- Germany
| | - Anna Chiara Sale
- Department of Chemistry and Pharmacy
- Friedrich-Alexander University Erlangen-Nürnberg
- 91054 Erlangen
- Germany
| | - Frank Hampel
- Department of Chemistry and Pharmacy
- Friedrich-Alexander University Erlangen-Nürnberg
- 91054 Erlangen
- Germany
| | - Dirk M. Guldi
- Department of Chemistry and Pharmacy
- Friedrich-Alexander University Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Ruben D. Costa
- Department of Chemistry and Pharmacy
- Friedrich-Alexander University Erlangen-Nürnberg
- 91058 Erlangen
- Germany
| | - Milan Kivala
- Department of Chemistry and Pharmacy
- Friedrich-Alexander University Erlangen-Nürnberg
- 91054 Erlangen
- Germany
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Cornil D, Van Regemorter T, Beljonne D, Cornil J. Work function shifts of a zinc oxide surface upon deposition of self-assembled monolayers: a theoretical insight. Phys Chem Chem Phys 2014; 16:20887-99. [DOI: 10.1039/c4cp02811b] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have investigated at the DFT level the way the work function of ZnO is affected upon deposition of self-assembled monolayers made of 4-tert-butylpyridine and various benzoic acids.
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Affiliation(s)
- D. Cornil
- Laboratory for Chemistry of Novel Materials
- University of Mons (UMons)
- Mons 7000, Belgium
| | - T. Van Regemorter
- Laboratory for Chemistry of Novel Materials
- University of Mons (UMons)
- Mons 7000, Belgium
| | - D. Beljonne
- Laboratory for Chemistry of Novel Materials
- University of Mons (UMons)
- Mons 7000, Belgium
| | - J. Cornil
- Laboratory for Chemistry of Novel Materials
- University of Mons (UMons)
- Mons 7000, Belgium
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Hofmann OT, Deinert JC, Xu Y, Rinke P, Stähler J, Wolf M, Scheffler M. Large work function reduction by adsorption of a molecule with a negative electron affinity: Pyridine on ZnO(101¯0). J Chem Phys 2013; 139:174701. [DOI: 10.1063/1.4827017] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Schott V, Oberhofer H, Birkner A, Xu M, Wang Y, Muhler M, Reuter K, Wöll C. Chemische Aktivität von dünnen Oxidschichten: Starke Träger- Wechselwirkungen ergeben eine neue ZnO-Dünnfilmphase. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302315] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Schott V, Oberhofer H, Birkner A, Xu M, Wang Y, Muhler M, Reuter K, Wöll C. Chemical Activity of Thin Oxide Layers: Strong Interactions with the Support Yield a New Thin-Film Phase of ZnO. Angew Chem Int Ed Engl 2013; 52:11925-9. [DOI: 10.1002/anie.201302315] [Citation(s) in RCA: 138] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 06/19/2013] [Indexed: 11/09/2022]
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Ramani M, Ponnusamy S, Muthamizhchelvan C, Cullen J, Krishnamurthy S, Marsili E. Morphology-directed synthesis of ZnO nanostructures and their antibacterial activity. Colloids Surf B Biointerfaces 2013; 105:24-30. [DOI: 10.1016/j.colsurfb.2012.12.056] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 12/07/2012] [Accepted: 12/22/2012] [Indexed: 11/29/2022]
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15
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Yang P, Chen S, Liu Y, Xiao Z, Ding L. A pyridine-functionalized pyrazolinofullerene used as a buffer layer in polymer solar cells. Phys Chem Chem Phys 2013; 15:17076-8. [DOI: 10.1039/c3cp53426j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Advanced Applications of NEXAFS Spectroscopy for Functionalized Surfaces. SURFACE SCIENCE TECHNIQUES 2013. [DOI: 10.1007/978-3-642-34243-1_10] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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17
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Liu J, Schüpbach B, Bashir A, Shekhah O, Nefedov A, Kind M, Terfort A, Wöll C. Structural characterization of self-assembled monolayers of pyridine-terminated thiolates on gold. Phys Chem Chem Phys 2010; 12:4459-72. [PMID: 20407720 DOI: 10.1039/b924246p] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Self-assembled monolayers (SAMs) fabricated on Au(111) substrates from a homologous series of pyridine-terminated organothiols have been investigated using ultra high vacuum infrared reflection adsorption spectroscopy (UHV-IRRAS), X-ray photoelectron spectroscopy (XPS), scanning tunnelling microscopy (STM) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. A total of 4 different pyridine-based organothiols have been investigated, consisting of a pyridine unit, one or two phenyl units, a spacer of between one and three methylene units and, finally, a thiol unit. For all pyridine-terminated thiols the immersion of Au-substrates in the corresponding ethanolic solutions was found to result in the formation of highly ordered and densely packed SAMs. For an even number of the methylene spacers between the SH group and the aromatic moieties, the SAM unit-cell is rather large, (5sq.rt(3) x 3)rect, whereas in case of an odd number of methylene units a smaller unit cell is adopted, (2sq.rt(3) x sq.rt(3))R30 degrees. The tilt angle of the molecules amounts to 15 degrees . In contrast to expectation, the pyridine-terminated organic surfaces exposed by the corresponding SAMs showed a surprisingly strong resistance with regard to protonation.
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Affiliation(s)
- Jinxuan Liu
- Lehrstuhl für Physikalische Chemie I, Ruhr-Universität Bochum, 44780 Bochum, Germany
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Low-temperature polymer-assisted synthesis of shape-tunable zinc oxide nanostructures dispersible in both aqueous and non-aqueous media. J Colloid Interface Sci 2009; 339:249-58. [DOI: 10.1016/j.jcis.2009.07.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2009] [Revised: 06/09/2009] [Accepted: 07/06/2009] [Indexed: 10/20/2022]
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Gao Y, Traeger F, Shekhah O, Idriss H, Wöll C. Probing the interaction of the amino acid alanine with the surface of ZnO. J Colloid Interface Sci 2009; 338:16-21. [DOI: 10.1016/j.jcis.2009.06.008] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2009] [Revised: 06/01/2009] [Accepted: 06/03/2009] [Indexed: 11/28/2022]
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20
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Klappenberger F, Weber-Bargioni A, Auwärter W, Marschall M, Schiffrin A, Barth JV. Temperature dependence of conformation, chemical state, and metal-directed assembly of tetrapyridyl-porphyrin on Cu(111). J Chem Phys 2008; 129:214702. [DOI: 10.1063/1.3021291] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Rössler N, Kotsis K, Staemmler V. Ab initio calculations for the Zn 2s and 2p core level binding energies in Zn oxo compounds and ZnO. Phys Chem Chem Phys 2006; 8:697-706. [PMID: 16482309 DOI: 10.1039/b512379h] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Zn 2s and 2p core level binding energies of ZnO and a few Zn oxo compounds containing Zn in its oxidation state +2 were calculated by means of wave function based quantum chemical ab initio methods. The computations were performed at two levels of approximation. First, Hartree-Fock calculations were carried out for the ground state of the neutral systems yielding the "initial state" effects, i.e. the shifts of the core level binding energies due to the changes in the chemical environment of the Zn atom under consideration (Koopmans' theorem level, KT). In the second step, Hartree-Fock calculations were performed for the core ionized states in order to account for the relaxation effects after ionization, i.e. for the "final state" effects (DeltaSCF level). Scalar relativistic corrections and spin-orbit coupling were included in a "spin-orbit-coupling configuration interaction" (SOC-CI) treatment both at the KT and DeltaSCF levels. In all Zn oxo compounds (Zn(4)O(formate)(6), Zn(4)O(acetate)(6) and several ZnO cubanes) small negative initial state shifts between -1.0 and 0.0 eV (relative to the free Zn atom) were found which are caused by the negative charges at the surrounding O atoms. The relaxation effects vary between -1.0 and -0.5 eV, such that the calculated total shifts are moderately negative (-1.5 to -0.5 eV). Embedded ZnO clusters of increasing size, ranging from Zn(13)O(4) to Zn(69)O(38), were used as models for bulk ZnO, the Zn 2s and 2p core level shifts calculated for these clusters being extrapolated to infinite cluster size. The calculations show that bulk ZnO has a rather large negative initial state shift of -2.1 +/- 0.1 eV, due to the Madelung potential at the Zn atom, and a comparatively small relaxation contribution of -1.0 +/- 0.1 eV. This yields a total shift of -3.1 +/- 0.2 eV (both for 2s and 2p, relative to atomic Zn), which is in very good agreement with experiment, -2.9 +/- 0.2 eV. The surprising experimental observation that the Zn 2s and 2p XPS peak positions are nearly identical in Zn metal and ZnO is explained by the fact that the sum of initial and final state effects is accidentally the same for the two systems though the individual contributions differ quite significantly: the initial and final state shifts amount to +2.4 and -5.1 eV for Zn metal vs.-2.1 and -1.0 eV for ZnO.
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Affiliation(s)
- Norbert Rössler
- Lehrstuhl für Theoretische Chemie, Ruhr-Universität Bochum, 44780 Bochum, Germany
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Ozawa K, Hasegawa T, Edamoto K, Takahashi K, Kamada M. Adsorption State and Molecular Orientation of Ammonia on ZnO(101̄0) Studied by Photoelectron Spectroscopy and near-Edge X-ray Absorption Fine Structure Spectroscopy. J Phys Chem B 2002. [DOI: 10.1021/jp0205970] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K. Ozawa
- Department of Chemistry and Materials Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-0033, Japan, and Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
| | - T. Hasegawa
- Department of Chemistry and Materials Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-0033, Japan, and Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
| | - K. Edamoto
- Department of Chemistry and Materials Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-0033, Japan, and Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
| | - K. Takahashi
- Department of Chemistry and Materials Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-0033, Japan, and Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
| | - M. Kamada
- Department of Chemistry and Materials Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152-0033, Japan, and Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
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Carniato S, Millié P. Accurate core electron binding energy calculations using small 6-31G and TZV core hole optimized basis sets. J Chem Phys 2002. [DOI: 10.1063/1.1446025] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Persson P, Bergström R, Ojamäe L, Lunell S. Quantum-chemical studies of metal oxides for photoelectrochemical applications. ADVANCES IN QUANTUM CHEMISTRY 2002. [DOI: 10.1016/s0065-3276(02)41054-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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25
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Kolczewski C, Püttner R, Plashkevych O, Ågren H, Staemmler V, Martins M, Snell G, Schlachter AS, Sant’Anna M, Kaindl G, Pettersson LGM. Detailed study of pyridine at the C 1sand N 1sionization thresholds: The influence of the vibrational fine structure. J Chem Phys 2001. [DOI: 10.1063/1.1397797] [Citation(s) in RCA: 226] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Gutiérrez Sosa A, Evans TM, Parker SC, Campbell CT, Thornton G. Orientation of Benzene and Phenoxy on the Polar ZnO(0001)−Zn Surface. J Phys Chem B 2001. [DOI: 10.1021/jp0034123] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. Gutiérrez Sosa
- Surface Science Research Centre and Chemistry Department, Manchester University, Manchester M13 9PL, UK, Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195-1700
| | - T. M. Evans
- Surface Science Research Centre and Chemistry Department, Manchester University, Manchester M13 9PL, UK, Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195-1700
| | - S. C. Parker
- Surface Science Research Centre and Chemistry Department, Manchester University, Manchester M13 9PL, UK, Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195-1700
| | - C. T. Campbell
- Surface Science Research Centre and Chemistry Department, Manchester University, Manchester M13 9PL, UK, Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195-1700
| | - G. Thornton
- Surface Science Research Centre and Chemistry Department, Manchester University, Manchester M13 9PL, UK, Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195-1700
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Becker T, Kunat M, Boas C, Burghaus U, Wöll C. Adsorption dynamics of CO on the polar surfaces of ZnO. J Chem Phys 2000. [DOI: 10.1063/1.1309131] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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28
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Wühn M, Joseph Y, Bagus PS, Niklewski A, Püttner R, Reiss S, Weiss W, Martins M, Kaindl G, Wöll C. The Electronic Structure and Orientation of Styrene Adsorbed on FeO(111) and Fe3O4(111)A Spectroscopic Investigation. J Phys Chem B 2000. [DOI: 10.1021/jp0006734] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Wühn
- Lehrstuhl für Physikalische Chemie I, Ruhr-Universität Bochum, 44780 Bochum, Germany, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4−6, 14195 Berlin, Germany, Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012
| | - Y. Joseph
- Lehrstuhl für Physikalische Chemie I, Ruhr-Universität Bochum, 44780 Bochum, Germany, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4−6, 14195 Berlin, Germany, Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012
| | - P. S. Bagus
- Lehrstuhl für Physikalische Chemie I, Ruhr-Universität Bochum, 44780 Bochum, Germany, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4−6, 14195 Berlin, Germany, Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012
| | - A. Niklewski
- Lehrstuhl für Physikalische Chemie I, Ruhr-Universität Bochum, 44780 Bochum, Germany, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4−6, 14195 Berlin, Germany, Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012
| | - R. Püttner
- Lehrstuhl für Physikalische Chemie I, Ruhr-Universität Bochum, 44780 Bochum, Germany, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4−6, 14195 Berlin, Germany, Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012
| | - S. Reiss
- Lehrstuhl für Physikalische Chemie I, Ruhr-Universität Bochum, 44780 Bochum, Germany, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4−6, 14195 Berlin, Germany, Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012
| | - W. Weiss
- Lehrstuhl für Physikalische Chemie I, Ruhr-Universität Bochum, 44780 Bochum, Germany, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4−6, 14195 Berlin, Germany, Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012
| | - M. Martins
- Lehrstuhl für Physikalische Chemie I, Ruhr-Universität Bochum, 44780 Bochum, Germany, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4−6, 14195 Berlin, Germany, Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012
| | - G. Kaindl
- Lehrstuhl für Physikalische Chemie I, Ruhr-Universität Bochum, 44780 Bochum, Germany, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4−6, 14195 Berlin, Germany, Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012
| | - Ch. Wöll
- Lehrstuhl für Physikalische Chemie I, Ruhr-Universität Bochum, 44780 Bochum, Germany, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4−6, 14195 Berlin, Germany, Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany, and Department of Chemistry, Texas A&M University, College Station, Texas 77842-3012
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