1
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Rogolino A, Claes N, Cizaurre J, Marauri A, Jumbo-Nogales A, Lawera Z, Kruse J, Sanromán-Iglesias M, Zarketa I, Calvo U, Jimenez-Izal E, Rakovich YP, Bals S, Matxain JM, Grzelczak M. Metal-Polymer Heterojunction in Colloidal-Phase Plasmonic Catalysis. J Phys Chem Lett 2022; 13:2264-2272. [PMID: 35239345 PMCID: PMC8935371 DOI: 10.1021/acs.jpclett.1c04242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 03/01/2022] [Indexed: 06/14/2023]
Abstract
Plasmonic catalysis in the colloidal phase requires robust surface ligands that prevent particles from aggregation in adverse chemical environments and allow carrier flow from reagents to nanoparticles. This work describes the use of a water-soluble conjugated polymer comprising a thiophene moiety as a surface ligand for gold nanoparticles to create a hybrid system that, under the action of visible light, drives the conversion of the biorelevant NAD+ to its highly energetic reduced form NADH. A combination of advanced microscopy techniques and numerical simulations revealed that the robust metal-polymer heterojunction, rich in sulfonate functional groups, directs the interaction of electron-donor molecules with the plasmonic photocatalyst. The tight binding of polymer to the gold surface precludes the need for conventional transition-metal surface cocatalysts, which were previously shown to be essential for photocatalytic NAD+ reduction but are known to hinder the optical properties of plasmonic nanocrystals. Moreover, computational studies indicated that the coating polymer fosters a closer interaction between the sacrificial electron-donor triethanolamine and the nanoparticles, thus enhancing the reactivity.
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Affiliation(s)
- Andrea Rogolino
- Galilean
School of Higher Education, University of
Padova, 35122 Padova, Italy
| | - Nathalie Claes
- EMAT-University
of Antwerp, Groenenborgerlaan
171, B-2020 Antwerp, Belgium
| | - Judit Cizaurre
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) Lardizabal Pasealekua 3, 20018 Donostia-San Sebastián, Spain
| | - Aimar Marauri
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) Lardizabal Pasealekua 3, 20018 Donostia-San Sebastián, Spain
| | - Alba Jumbo-Nogales
- Centro
de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-Sebastián, Spain
| | - Zuzanna Lawera
- Centro
de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-Sebastián, Spain
| | - Joscha Kruse
- Centro
de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-Sebastián, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-Sebastián, Spain
| | - María Sanromán-Iglesias
- Centro
de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-Sebastián, Spain
| | - Ibai Zarketa
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) Lardizabal Pasealekua 3, 20018 Donostia-San Sebastián, Spain
| | - Unai Calvo
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) Lardizabal Pasealekua 3, 20018 Donostia-San Sebastián, Spain
| | - Elisa Jimenez-Izal
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) Lardizabal Pasealekua 3, 20018 Donostia-San Sebastián, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-Sebastián, Spain
- Ikerbasque,
Basque Foundation for Science, Bilbao 48009, Spain
| | - Yury P. Rakovich
- Centro
de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-Sebastián, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-Sebastián, Spain
- Ikerbasque,
Basque Foundation for Science, Bilbao 48009, Spain
| | - Sara Bals
- EMAT-University
of Antwerp, Groenenborgerlaan
171, B-2020 Antwerp, Belgium
| | - Jon M. Matxain
- Kimika
Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU) Lardizabal Pasealekua 3, 20018 Donostia-San Sebastián, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-Sebastián, Spain
| | - Marek Grzelczak
- Centro
de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-Sebastián, Spain
- Donostia
International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-Sebastián, Spain
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2
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Understanding the thermal-annealing-generated stable structure of phthalocyanine derivative/polymer bicomponent systems through scanning tunneling microscopy and density functional theory calculations. POLYMER 2022. [DOI: 10.1016/j.polymer.2021.124375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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3
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Sahare S, Ghoderao P, Khan SB, Chan Y, Lee SL. Recent progress in hybrid perovskite solar cells through scanning tunneling microscopy and spectroscopy. NANOSCALE 2020; 12:15970-15992. [PMID: 32761037 DOI: 10.1039/d0nr03499a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Currently, sustainable renewable energy sources are urgently required to fulfill the cumulative energy needs of the world's 7.8 billion population, since the conventional coal and fossil fuels will be exhausted soon. Photovoltaic devices are a direct and efficient means to produce a huge amount of energy to meet these energy targets. In particular, hybrid-perovskite-based photovoltaic devices merit special attention not only due to their exceptional efficiency for generating appreciable energy but also their tunable band gaps and the ease of device fabrication. However, the commercialization of such devices suffers from the instability of the compositional materials. The cause of instability is the perovskite's structure and its morphology at the sub-molecular level; thereby revealing and eliminating these instabilities are a striking challenge. To address this issue, scanning tunneling microscopy/spectroscopy (STM/STS) presents a comprehensive method to allow the visualization of the morphology and electronic structure of materials at atomic-level resolution. Here, we review the recent developments of perovskite-based solar cells (PSCs), the STM/STS analysis of photoactive halide/hybrid and oxide materials, and the real-time STM/STS investigation of electronic structures with defects and traps that are believed to mainly affect device performances. The detailed STM/STS analysis can facilitate a better understanding of the properties of materials at the nanoscale. This informative study may hold great promise to advance the development of stable PSCs under atmospheric conditions.
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Affiliation(s)
- Sanjay Sahare
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060 China. and Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronics Engineering, Shenzhen University, Shenzhen, Guangdong, 518060 China
| | - Prachi Ghoderao
- Department of Applied Physics, Defence Institute of Advanced Technology, Pune, 411025 India
| | - Sadaf Bashir Khan
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060 China. and Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronics Engineering, Shenzhen University, Shenzhen, Guangdong, 518060 China
| | - Yue Chan
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060 China.
| | - Shern-Long Lee
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060 China.
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4
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de Araujo MH, Silva WM, Rocco ML, Donnici CL, Calado HD. Preparation and characterization of a quaternary acceptor-donor-acceptor-donor (A-D-A-D) nanohybrid material for electrochromic device application. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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5
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Li JK, Shao MY, Yang ZY, Guskova O. The merging mechanisms of poly(3-hexylthiophene) domains revealed through scanning tunneling microscopy and molecular dynamics simulations. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Liu IP, Yeh PH, Fu SH, Lee YL. Preparation and characterization of ordered Poly(3,4-Ethylenedioxythiophene) monolayers on Au(111) surfaces. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.134818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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7
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Oberthür N, Gross J, Janke W. Two-dimensional Monte Carlo simulations of coarse-grained poly(3-hexylthiophene) (P3HT) adsorbed on striped substrates. J Chem Phys 2018; 149:144903. [PMID: 30316285 DOI: 10.1063/1.5046383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
We investigate the structural phases of single poly(3-hexylthiophene) (P3HT) polymers that are adsorbed on a two-dimensional substrate with a striped pattern. We use a coarse-grained representation of the polymer and sophisticated Monte Carlo techniques such as a parallelized replica exchange scheme and local as well as non-local updates to the polymer's configuration. From peaks in the canonically derived observables, it is possible to obtain structural phase diagrams for varying substrate parameters. We find that the shape of the stripe pattern has a substantial effect on the obtained configurations of the polymer and can be tailored to promote either more stretched out or more compact configurations. In the compact phases, we observe different structural motifs, such as hairpins, double-hairpins, and interlocking "zipper" states.
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Affiliation(s)
- Nicolai Oberthür
- Institut für Theoretische Physik, Universität Leipzig, Postfach 100 920, 04009 Leipzig, Germany
| | - Jonathan Gross
- Institut für Theoretische Physik, Universität Leipzig, Postfach 100 920, 04009 Leipzig, Germany
| | - Wolfhard Janke
- Institut für Theoretische Physik, Universität Leipzig, Postfach 100 920, 04009 Leipzig, Germany
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8
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Theoretical Evaluation of the Influence of Molecular Packing Mode on the Intramolecular Reorganization Energy of Oligothiophene Molecules. Polymers (Basel) 2017; 10:polym10010030. [PMID: 30966065 PMCID: PMC6414849 DOI: 10.3390/polym10010030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/19/2017] [Accepted: 12/20/2017] [Indexed: 12/25/2022] Open
Abstract
Accurate determination of the relationships among packing mode, molecular structure and charge transfer mobility for oligothiophene analogues has been significantly impeded, due to the lack of crystal structure information. In the current study, molecular dynamics (MD) were used to investigate the packing mode of non-, methyl- and ethyl-substituted poly(3-alkylthiophenes) (P3ATs). Obvious conformational changes were observed when comparing the packed and isolated oligothiophene molecules, indicating the important influence of packing mode on the geometric structures of these materials. Considering the crucial role played by reorganization energy (RE) in the charge transfer process, both quantum mechanics (QM) and quantum mechanics/molecular mechanics (QM/MM) were performed to examine the impact of different conformations on energy. Our simulations revealed that the geometric structures have distinct effects on the RE. Our data suggest that MD could give a reliable packing mode of oligothiophene analogues, and that QM/MM is indispensable for precisely estimating RE.
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9
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Liu S, Fu Y, Li G, Li L, Law HKW, Chen X, Yan F. Conjugated Polymer for Voltage-Controlled Release of Molecules. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29. [PMID: 28707332 DOI: 10.1002/adma.201701733] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/20/2017] [Indexed: 05/16/2023]
Abstract
Conjugated polymers are attractive in numerous biological applications because they are flexible, biocompatible, cost-effective, solution-processable, and electronic/ionic conductive. One interesting application is for controllable drug release, and this has been realized previously using organic electronic ion pumps. However, organic electronic ion pumps show high operating voltages and limited transportation efficiency. Here, the first report of low-voltage-controlled molecular release with a novel organic device based on a conjugated polymer poly(3-hexylthiophene) is presented. The releasing rate of molecules can be accurately controlled by the duration of the voltage applied on the device. The use of a handy mobile phone to remotely control the releasing process and its application in delivering an anticancer drug to treat cancer cells are also successfully demonstrated. The working mechanism of the device is attributed to the unique switchable permeability of poly(3-hexylthiophene) in aqueous solutions under a bias voltage that can tune the wettability of poly(3-hexylthiophene) via oxidation or reduction processes. The organic devices are expected to find many promising applications for controllable drug delivery in biological systems.
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Affiliation(s)
- Shenghua Liu
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China
| | - Ying Fu
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China
| | - Guijun Li
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China
| | - Li Li
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hong Kong, China
| | - Helen Ka-Wai Law
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong, China
| | - Xianfeng Chen
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, King's Buildings, Mayfield Road, Edinburgh, EH9 3JL, UK
| | - Feng Yan
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China
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10
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Cao H, Van Den Eede MP, Koeckelberghs G, Mali KS, De Feyter S. Direct observation of the influence of chirality on the microstructure of regioregular poly(3-alkylthiophene)s at the liquid/solid interface. Chem Commun (Camb) 2016; 53:153-156. [PMID: 27841384 DOI: 10.1039/c6cc08074j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The degree of order of poly(3-alkylthiophene)s on atomically flat surfaces is strongly influenced by interchain interactions. Regularly ordered, disordered and amorphous microstructures are observed for achiral, homochiral and meso poly(3-alkylthiophene)s, respectively, as revealed by scanning tunneling microscopy.
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Affiliation(s)
- Hai Cao
- KU Leuven-University of Leuven, Department of Chemistry, Division of Molecular Imaging and Photonics, Celestijnenlaan 200F, B-3001, Leuven, Belgium.
| | - Marie-Paule Van Den Eede
- KU Leuven-University of Leuven, Department of Chemistry, Division of Polymer Chemistry and Materials, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Guy Koeckelberghs
- KU Leuven-University of Leuven, Department of Chemistry, Division of Polymer Chemistry and Materials, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Kunal S Mali
- KU Leuven-University of Leuven, Department of Chemistry, Division of Molecular Imaging and Photonics, Celestijnenlaan 200F, B-3001, Leuven, Belgium.
| | - Steven De Feyter
- KU Leuven-University of Leuven, Department of Chemistry, Division of Molecular Imaging and Photonics, Celestijnenlaan 200F, B-3001, Leuven, Belgium.
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11
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Duan XL, Chen HJ, Huang JY, Liu ZF, Li JK, Yang ZY, Zhang WF, Yu G. Tracking the Evolution of Polymer Interface Films during the Process of Thermal Annealing at the Domain and Single Molecular Levels using Scanning Tunneling Microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:9437-9444. [PMID: 27605160 DOI: 10.1021/acs.langmuir.6b02139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Structural evolution of polymer (NTZ12) interface films during the process of annealing is revealed at the domain and single molecular levels using the statistical data measured from scanning tunneling microscopy images and through theoretical calculations. First, common features of the interface films are examined. Then, mean values of surface-occupied ratio, size and density of the domain are used to reveal the intrinsic derivation of the respective stages. Formation of new domains is triggered at 70 °C, but domain ripening is not activated. At 110 °C, the speed of formation of new domains is almost balanced by the consumption due to the ripening process. However, formation of new domains is reduced heavily at 150 °C but restarted at 190 °C. At the single molecular level, the ratio of the average length of linear to curved backbones is increased during annealing, whereas the ratios of the total length and the total number of linear to curved skeletons reaches a peak value at 150 °C. The two major conformations of curved backbones for all samples are 120° and 180° bending, but the ripening at 150 °C reduces 180° folding dramatically. Molecular dynamic simulations disclose the fast relaxing process of curved skeletons at high temperature.
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Affiliation(s)
- Xiao-Ling Duan
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences , 19A Yuquanlu, Beijing 100049, P. R. China
| | - Hua-Jie Chen
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Jian-Yao Huang
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Zhi-Fei Liu
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences , 19A Yuquanlu, Beijing 100049, P. R. China
| | - Jin-Kuo Li
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences , 19A Yuquanlu, Beijing 100049, P. R. China
| | - Zhi-Yong Yang
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences , 19A Yuquanlu, Beijing 100049, P. R. China
| | - Wei-Feng Zhang
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Gui Yu
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
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12
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Reiser B, González-García L, Kanelidis I, Maurer JHM, Kraus T. Gold nanorods with conjugated polymer ligands: sintering-free conductive inks for printed electronics. Chem Sci 2016; 7:4190-4196. [PMID: 30155064 PMCID: PMC6014069 DOI: 10.1039/c6sc00142d] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 03/08/2016] [Indexed: 11/21/2022] Open
Abstract
Metal-based nanoparticle inks for printed electronics usually require sintering to improve the poor electron transport at particle-particle interfaces. The ligands required for colloidal stability act as insulating barriers and must be removed in a post-deposition sintering step. This complicates the fabrication process and makes it incompatible with many flexible substrates. Here, we bind a conjugated, electrically conductive polymer on gold nanorods (AuNRs) as a ligand. The polymer, poly[2-(3-thienyl)-ethyloxy-4-butylsulfonate] (PTEBS), provides colloidal stability and good electron transport properties to stable, sintering-free inks. We confirm that the polymer binds strongly through a multidentate binding motif and provides superior colloidal stability in polar solvents over months by IR and Raman spectrometry and zeta potential measurements. We demonstrate that the developed ligand exchange protocol is directly applicable to other polythiophenes such as poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS). Films of AuNRs coated with above polymers reached conductivities directly after deposition comparable to conventional metal inks after ligand removal and retained their conductivity for at least one year when stored under ambient conditions.
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Affiliation(s)
- B Reiser
- INM - Leibniz Institute for New Materials , Campus D2 2 , 66123 Saarbrücken , Germany . ;
| | - L González-García
- INM - Leibniz Institute for New Materials , Campus D2 2 , 66123 Saarbrücken , Germany . ;
| | - I Kanelidis
- INM - Leibniz Institute for New Materials , Campus D2 2 , 66123 Saarbrücken , Germany . ;
| | - J H M Maurer
- INM - Leibniz Institute for New Materials , Campus D2 2 , 66123 Saarbrücken , Germany . ;
| | - T Kraus
- INM - Leibniz Institute for New Materials , Campus D2 2 , 66123 Saarbrücken , Germany . ;
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13
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Taber BN, Kislitsyn DA, Gervasi CF, Mills JM, Rosenfield AE, Zhang L, Mannsfeld SCB, Prell JS, Briseno AL, Nazin GV. Real-space visualization of conformation-independent oligothiophene electronic structure. J Chem Phys 2016; 144:194703. [PMID: 27208961 DOI: 10.1063/1.4949765] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present scanning tunneling microscopy and spectroscopy (STM/STS) investigations of the electronic structures of different alkyl-substituted oligothiophenes on the Au(111) surface. STM imaging showed that on Au(111), oligothiophenes adopted distinct straight and bent conformations. By combining STS maps with STM images, we visualize, in real space, particle-in-a-box-like oligothiophene molecular orbitals. We demonstrate that different planar conformers with significant geometrical distortions of oligothiophene backbones surprisingly exhibit very similar electronic structures, indicating a low degree of conformation-induced electronic disorder. The agreement of these results with gas-phase density functional theory calculations implies that the oligothiophene interaction with the Au(111) surface is generally insensitive to molecular conformation.
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Affiliation(s)
- Benjamen N Taber
- Department of Chemistry and Biochemistry, Materials Science Institute, Oregon Center for Optical, Molecular and Quantum Science, University of Oregon, 1253 University of Oregon, Eugene, Oregon 97403, USA
| | - Dmitry A Kislitsyn
- Department of Chemistry and Biochemistry, Materials Science Institute, Oregon Center for Optical, Molecular and Quantum Science, University of Oregon, 1253 University of Oregon, Eugene, Oregon 97403, USA
| | - Christian F Gervasi
- Department of Chemistry and Biochemistry, Materials Science Institute, Oregon Center for Optical, Molecular and Quantum Science, University of Oregon, 1253 University of Oregon, Eugene, Oregon 97403, USA
| | - Jon M Mills
- Department of Chemistry and Biochemistry, Materials Science Institute, Oregon Center for Optical, Molecular and Quantum Science, University of Oregon, 1253 University of Oregon, Eugene, Oregon 97403, USA
| | - Ariel E Rosenfield
- Department of Chemistry and Biochemistry, Materials Science Institute, Oregon Center for Optical, Molecular and Quantum Science, University of Oregon, 1253 University of Oregon, Eugene, Oregon 97403, USA
| | - Lei Zhang
- Department of Polymer Science and Engineering, Silvio O. Conte National Center for Polymer Research, University of Massachusetts-Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, USA
| | - Stefan C B Mannsfeld
- Center for Advancing Electronics Dresden, Dresden University of Technology, 01062 Dresden, Germany
| | - James S Prell
- Department of Chemistry and Biochemistry, Materials Science Institute, Oregon Center for Optical, Molecular and Quantum Science, University of Oregon, 1253 University of Oregon, Eugene, Oregon 97403, USA
| | - Alejandro L Briseno
- Department of Polymer Science and Engineering, Silvio O. Conte National Center for Polymer Research, University of Massachusetts-Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, USA
| | - George V Nazin
- Department of Chemistry and Biochemistry, Materials Science Institute, Oregon Center for Optical, Molecular and Quantum Science, University of Oregon, 1253 University of Oregon, Eugene, Oregon 97403, USA
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14
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Kislitsyn DA, Taber BN, Gervasi CF, Zhang L, Mannsfeld SCB, Prell JS, Briseno AL, Nazin GV. Oligothiophene wires: impact of torsional conformation on the electronic structure. Phys Chem Chem Phys 2016; 18:4842-9. [DOI: 10.1039/c5cp07092a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Different torsional conformations of alkyl-substituted oligothiophenes show nearly identical progressions of particle-in-a-box-like electronic orbitals.
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Affiliation(s)
- D. A. Kislitsyn
- Department of Chemistry and Biochemistry
- Materials Science Institute
- Oregon Center for Optical
- Molecular and Quantum Science
- University of Oregon
| | - B. N. Taber
- Department of Chemistry and Biochemistry
- Materials Science Institute
- Oregon Center for Optical
- Molecular and Quantum Science
- University of Oregon
| | - C. F. Gervasi
- Department of Chemistry and Biochemistry
- Materials Science Institute
- Oregon Center for Optical
- Molecular and Quantum Science
- University of Oregon
| | - L. Zhang
- Department of Polymer Science and Engineering
- University of Massachusetts-Amherst
- Silvio O. Conte National Center for Polymer Research
- USA
| | - S. C. B. Mannsfeld
- Center for Advancing Electronics Dresden
- Dresden University of Technology
- 01062 Dresden
- Germany
| | - J. S. Prell
- Department of Chemistry and Biochemistry
- Materials Science Institute
- Oregon Center for Optical
- Molecular and Quantum Science
- University of Oregon
| | - A. L. Briseno
- Department of Polymer Science and Engineering
- University of Massachusetts-Amherst
- Silvio O. Conte National Center for Polymer Research
- USA
| | - G. V. Nazin
- Department of Chemistry and Biochemistry
- Materials Science Institute
- Oregon Center for Optical
- Molecular and Quantum Science
- University of Oregon
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15
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Förster S, Kohl E, Ivanov M, Gross J, Widdra W, Janke W. Polymer adsorption on reconstructed Au(001): A statistical description of P3HT by scanning tunneling microscopy and coarse-grained Monte Carlo simulations. J Chem Phys 2014; 141:164701. [DOI: 10.1063/1.4898382] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- S. Förster
- Institute of Physics, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
| | - E. Kohl
- Institute of Physics, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
| | - M. Ivanov
- Institut für Theoretische Physik, Universität Leipzig, Postfach 100 920, D-04009 Leipzig, Germany
| | - J. Gross
- Institut für Theoretische Physik, Universität Leipzig, Postfach 100 920, D-04009 Leipzig, Germany
| | - W. Widdra
- Institute of Physics, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
- Max-Planck-Institut für Mikrostrukturphysik, Halle, Germany
| | - W. Janke
- Institut für Theoretische Physik, Universität Leipzig, Postfach 100 920, D-04009 Leipzig, Germany
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Zhang C, Wu Y, Zhou Y, Gao N, Guo F, Chen X, Jiang B, Hu W, Kang J. Two-dimensional Au lattices featuring unique carrier transport preference and wide forbidden gap. NANOSCALE 2014; 6:10118-10125. [PMID: 25037748 DOI: 10.1039/c4nr01329h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Large-scale 2D Au lattices with honeycomb-like structure are fabricated on Si(111)-7 × 7 surface at room temperature. The growth pattern investigated by reflection high-energy electron diffraction and in situ scanning tunneling microscopy indicates that the 2D Au lattices are composed of two interfacial distinct layers that are completely formed one after another with a close-packed structure. A unique wide forbidden gap of 4.1 eV is measured around the Fermi level of the 2D Au lattices by scanning tunneling spectroscopy. Bias-dependent STM images and theoretical simulations suggest that the in-plane quantum coupling and carrier transport behavior are responsible for the novel electronic properties. In addition to local electronic states, the electronic structures of 2D Au lattices are further modulated by the carrier transport preference that is determined by carrier energy and symmetry of 2D lattices. These findings will provide some references for the controlled fabrication and for routing the carrier transport behavior of low-dimensional metal structures.
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Affiliation(s)
- Chunmiao Zhang
- Department of Physics, Fujian Key Laboratory of Semiconductor Materials and Applications, Xiamen University, Xiamen, 361005, China.
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Förster S, Widdra W. Structure of single polythiophene molecules on Au(001) prepared by in situ UHV electrospray deposition. J Chem Phys 2014; 141:054713. [DOI: 10.1063/1.4891929] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Stefan Förster
- Institute of Physics, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
| | - Wolf Widdra
- Institute of Physics, Martin-Luther-Universität Halle-Wittenberg, Halle, Germany
- Max Planck Institut für Mikrostrukturphysik, Halle, Germany
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