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Jelenfi DP, Tajti A, Szalay PG. Interpretation of molecular electron transport in ab initio many-electron framework incorporating zero-point nuclear motion effects. J Comput Chem 2024; 45:1968-1979. [PMID: 38703360 DOI: 10.1002/jcc.27381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/22/2024] [Accepted: 04/22/2024] [Indexed: 05/06/2024]
Abstract
A computational methodology, founded on chemical concepts, is presented for interpreting the role of nuclear motion in the electron transport through single-molecule junctions (SMJ) using many-electron ab initio quantum chemical calculations. Within this approach the many-electron states of the system, computed at the SOS-ADC(2) level, are followed along the individual normal modes of the encapsulated molecules. The inspection of the changes in the partial charge distribution of the many-electron states allows the quantification of the electron transport and the estimation of transmission probabilities. This analysis improves the understanding of the relationship between internal motions and electron transport. Two SMJ model systems are studied for validation purposes, constructed from a conductor (BDA, benzene-1,4-diamine) and an insulator molecule (DABCO, 1,4-diazabicyclo[2.2.2]octane). The trends of the resulting transmission probabilities are in agreement with the experimental observations, demonstrating the capability of the approach to distinguish between conductor and insulator type systems, thereby offering a straightforward and cost-effective tool for such classifications via quantum chemical calculations.
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Affiliation(s)
- Dávid P Jelenfi
- Hevesy György PhD School of Chemistry, ELTE Eötvös Loránd University, Budapest, Hungary
- Institute of Chemistry, Laboratory of Theoretical Chemistry, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Attila Tajti
- Institute of Chemistry, Laboratory of Theoretical Chemistry, ELTE Eötvös Loránd University, Budapest, Hungary
| | - Péter G Szalay
- Institute of Chemistry, Laboratory of Theoretical Chemistry, ELTE Eötvös Loránd University, Budapest, Hungary
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2
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Abstract
Large negative differential conductance (NDC) at lower bias regime is a very desirable functional property for single molecular device. Due to the non-conjugated segment separating two conjugated branches, the single thiolated arylethynylene molecule with 9,10-dihydroanthracene core (denoted as TADHA) presents excellent NDC behavior in lower bias regime. Based on the ab initio calculation and non-equilibrium Green’s function formalism, the NDC behavior of TADHA molecular device and the H2O-molecule-adsorption effects are studied systematically. The numerical results show that the NDC behavior of TADHA molecular junction originates from the Stark effect of the applied bias which splits the degeneration of the highest occupied molecular orbital (HOMO) and HOMO-1. The H2O molecule adsorbed on the terminal sulphur atom strongly suppresses the conductance of TADHA molecular device and destroys the NDC behavior in the lower bias regime. Single or separated H2O molecules adsorbed on the backbone of TADHA molecule can depress the energy levels of molecular orbitals, but have little effects on the NDC behavior of the TADHA molecular junction. Aggregate of several H2O molecules adsorbed on one branch of TADHA molecule can dramatically enhance the conductance and NDC behavior of the molecular junction, and result in rectifier behavior.
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Leng J, Zhao L, Zhang Y, Ma H. Intermolecular interaction effect on the inelastic electron tunneling spectroscopy of bi-octane-monothiol junctions. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2016.11.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Liu R, Wang CK, Li ZL. A method to study electronic transport properties of molecular junction: one-dimension transmission combined with three-dimension correction approximation (OTCTCA). Sci Rep 2016; 6:21946. [PMID: 26911451 PMCID: PMC4766509 DOI: 10.1038/srep21946] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 02/03/2016] [Indexed: 11/09/2022] Open
Abstract
Based on the ab initio calculation, a method of one-dimension transmission combined with three-dimension correction approximation (OTCTCA) is developed to investigate electron-transport properties of molecular junctions. The method considers that the functional molecule provides a spatial distribution of effective potential field for the electronic transport. The electrons are injected from one electrode by bias voltage, then transmit through the potential field around the functional molecule, at last are poured into the other electrode with a specific transmission probability which is calculated from one-dimension Schrödinger equation combined with three-dimension correction. The electron-transport properties of alkane diamines and 4, 4′-bipyridine molecular junctions are studied by applying OTCTCA method. The numerical results show that the conductance obviously exponentially decays with the increase of molecular length. When stretching molecular junctions, steps with a certain width are presented in conductance traces. Especially, in stretching process of 4, 4′-bipyridine molecular junction, if the terminal N atom is broken from flat part of electrode tip and exactly there is a surface Au atom on the tip nearby the N atom, the molecule generally turns to absorb on the surface Au atom, which further results in another lower conductance step in the traces as the experimental probing.
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Affiliation(s)
- Ran Liu
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China
| | - Chuan-Kui Wang
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China
| | - Zong-Liang Li
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China
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Ye G, Li J, Deng MS, Jiang J. One-Dimensional Scanning of Electronic Wavefunction in Carbon Nanotubes by Molecular Encapsulation. CHINESE J CHEM PHYS 2015. [DOI: 10.1063/1674-0068/28/cjcp1506112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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6
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Hu W, Tian G, Duan S, Lin LL, Ma Y, Luo Y. Vibrational identification for conformations of trans-1,2-bis (4-pyridyl) ethylene in gold molecular junctions. Chem Phys 2015. [DOI: 10.1016/j.chemphys.2015.03.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Ding Z, Sun Z, Li G, Meng F, Wu M, Ma Y, Chen X. The inelastic electron tunneling spectroscopy of curved finite-sized graphene nanoribbon based molecular devices. RSC Adv 2015. [DOI: 10.1039/c5ra09727d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The inelastic electron scattering properties of the molecular devices of curved finite-sized graphene nanoribbon (GNR) slices have been studied by combining the density functional theory and Green's function method.
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Affiliation(s)
- Zongling Ding
- School of Physics and Material Science
- Anhui University
- Hefei, China
- Co-operative Innovation Research Center for Weak Signal-Detecting Materials and Devices Integration
- Anhui University
| | - Zhaoqi Sun
- School of Physics and Material Science
- Anhui University
- Hefei, China
| | - Guang Li
- School of Physics and Material Science
- Anhui University
- Hefei, China
| | - Fanming Meng
- School of Physics and Material Science
- Anhui University
- Hefei, China
| | - Mingzai Wu
- School of Physics and Material Science
- Anhui University
- Hefei, China
| | - Yongqing Ma
- School of Physics and Material Science
- Anhui University
- Hefei, China
| | - Xiaoshuang Chen
- National Lab. of Infrared Physics
- Shanghai Institute for Technical Physics
- Chinese Academy of Sciences
- Shanghai, China
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Ségerie A, Lin LL, Liégeois V, Luo Y, Champagne B. Effects of the basis set and of the exchange-correlation functional on the Inelastic Electron Tunneling signatures of 1,4-benzenedithiol. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 119:34-41. [PMID: 23831045 DOI: 10.1016/j.saa.2013.05.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 05/09/2013] [Accepted: 05/12/2013] [Indexed: 06/02/2023]
Abstract
The effects of the atomic basis set and of the exchange-correlation (XC) functional on the Inelastic Electron Tunneling (IET) spectra have been investigated by considering the prototypical 1,4-benzenedithiol molecule. These studies have been completed by tackling the reliability of the same methods for predicting the IR absorption spectrum of the same molecule. The main conclusions are (i) the B3LYP XC functional is suitable to predict the relative vibrational frequencies, (ii) provided a scaling factor is used, the root mean square error on the vibrational frequencies goes down to 18 cm(-1), (iii) triple-ζ basis sets and in particular the cc-pVTZ basis set is a good compromise between accuracy and computational needs, (iv) basis set effects on the IET intensities are larger than those of the XC functional, and (v) the cc-pVTZ, cc-pVQZ, and aug-cc-pVDZ basis sets provide consistent IET intensities.
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Affiliation(s)
- Audrey Ségerie
- Laboratoire de Chimie Théorique, Unité de Chimie Physique Théorique et Structurale, University of Namur, Rue de Bruxelles 61, B-5000 Namur, Belgium
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Ding Z, Sun Z, Li G, Meng F, Wu M, Ma Y, Chen X. Effect of edge modification on transport properties of finite-sized, graphene nanoribbon-based molecular devices. RSC Adv 2014. [DOI: 10.1039/c4ra09040c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The transport mechanisms of several finite-sized, graphene nanoribbon-based junctions have been computationally investigated using density functional theory and Green's functional method.
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Affiliation(s)
- Zongling Ding
- School of Physics and Material Science
- Anhui University
- Hefei, China
| | - Zhaoqi Sun
- School of Physics and Material Science
- Anhui University
- Hefei, China
| | - Guang Li
- School of Physics and Material Science
- Anhui University
- Hefei, China
| | - Fanming Meng
- School of Physics and Material Science
- Anhui University
- Hefei, China
| | - Mingzai Wu
- School of Physics and Material Science
- Anhui University
- Hefei, China
| | - Yongqing Ma
- School of Physics and Material Science
- Anhui University
- Hefei, China
| | - Xiaoshuang Chen
- National Lab. of Infrared Physics
- Shanghai Institute for Technical Physics
- Chinese Academy of Sciences
- Shanghai, China
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Ségerie A, Liégeois V, Champagne B, Lin LL, Luo Y. Theoretical Insight into the Inelastic Electron Tunneling Spectra of an Anil Derivative. J Phys Chem A 2013; 117:12783-95. [DOI: 10.1021/jp408068d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Audrey Ségerie
- Laboratoire
de Chimie Théorique, University of Namur, rue de Bruxelles,
61, B-5000 Namur, Belgium
| | - Vincent Liégeois
- Laboratoire
de Chimie Théorique, University of Namur, rue de Bruxelles,
61, B-5000 Namur, Belgium
| | - Benoît Champagne
- Laboratoire
de Chimie Théorique, University of Namur, rue de Bruxelles,
61, B-5000 Namur, Belgium
| | - Li-Li Lin
- Department
of Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-10691 Stockholm, Sweden
| | - Yi Luo
- Department
of Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-10691 Stockholm, Sweden
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11
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Li Z, Fu X, Zhang G, Wang C. Effect of Gate Electric Field on Single Organic Molecular Devices. CHINESE J CHEM PHYS 2013. [DOI: 10.1063/1674-0068/26/02/185-190] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Badiali J. Irreversible behavior in small systems – Solvent effect and calculation of a chemical rate constant. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2012.04.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
Basic concepts in tunneling spectroscopy applied to molecular systems are presented. Junctions of the form M-A-M, M-I-A-M, and M-I-A-I'-M, where A is an active molecular layer, are considered. Inelastic electron tunneling spectroscopy (IETS) is found to be readily applied to all the above device types. It can provide both vibrational and electron spectroscopic data about the molecules comprising the A layer. In IETS there are no strong selection rules (although there are preferences) so that transitions that are normally IR, Raman, or even photon-forbidden can be observed. In the electronic transition domain, spin and Laporte forbidden transitions may be observed. Both vibrational and electronic IETS can be acquired from single molecules. The negative aspect of this seemingly ideal spectroscopic method is the thermal line width of about 5 k(B)T. This limits the useful measurement of vibrational IETS to temperatures below about 10 K. In the case of most electronic transitions where the intrinsic linewidth is much broader, useful experiments above 100 K are possible. One further limitation of electronic IETS is that it is generally limited to transitions with energy less than about 20,000 cm(-1). IETS can be identified by peaks in d(2) I/dV (2) vs bias voltage plots that occur at the same position (but not necessarily same intensity) in either bias polarity.Elastic tunneling spectroscopy is discussed in the context of processes involving molecular ionization and electron affinity states, a technique we call orbital mediated tunneling spectroscopy, or OMTS. OMTS can be applied readily to M-I-A-M and M-I-A-I'-M systems, but application to M-A-M junctions is problematic. Spectra can be obtained from single molecules. Ionization state results correlate well with UPS spectra obtained from the same systems in the same environment. Both ionization and affinity levels measured by OMTS can usually be correlated with one electron oxidation and reduction potentials for the molecular species in solution. OMTS can be identified by peaks in dI/dV vs bias voltage plots that do not occur at the same position in either bias polarity. Because of the intrinsic width of the ionization and affinity transitions, OMTS can be applied at temperatures above 500 K.This is not a comprehensive review of more than 20 years of research and there are many excellent papers that are not cited here. An absence of a citation is not a reflection on the quality of the work.
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Jacob D, Palacios JJ. Critical comparison of electrode models in density functional theory based quantum transport calculations. J Chem Phys 2011; 134:044118. [PMID: 21280698 DOI: 10.1063/1.3526044] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We study the performance of two different electrode models in quantum transport calculations based on density functional theory: parametrized Bethe lattices and quasi-one-dimensional wires or nanowires. A detailed account of implementation details in both the cases is given. From the systematic study of nanocontacts made of representative metallic elements, we can conclude that the parametrized electrode models represent an excellent compromise between computational cost and electronic structure definition as long as the aim is to compare with experiments where the precise atomic structure of the electrodes is not relevant or defined with precision. The results obtained using parametrized Bethe lattices are essentially similar to the ones obtained with quasi-one-dimensional electrodes for large enough cross-sections of these, adding a natural smearing to the transmission curves that mimics the true nature of polycrystalline electrodes. The latter are more demanding from the computational point of view, but present the advantage of expanding the range of applicability of transport calculations to situations where the electrodes have a well-defined atomic structure, as is the case for carbon nanotubes, graphene nanoribbons, or semiconducting nanowires. All the analysis is done with the help of codes developed by the authors which can be found in the quantum transport toolbox ALACANT and are publicly available.
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Affiliation(s)
- D Jacob
- Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany.
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15
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Liang YY, Chen H, Mizuseki H, Kawazoe Y. Gate-controlled current and inelastic electron tunneling spectrum of benzene: A self-consistent study. J Chem Phys 2011; 134:144113. [DOI: 10.1063/1.3571475] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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16
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Lin LL, Wang CK, Luo Y. Inelastic electron tunneling spectroscopy of gold-benzenedithiol-gold junctions: accurate determination of molecular conformation. ACS NANO 2011; 5:2257-63. [PMID: 21309567 DOI: 10.1021/nn103522k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The gold-benzenedithiol-gold junction is the classic prototype of molecular electronics. However, even with the similar experimental setup, it has been difficult to reproduce the measured results because of the lack of basic information about the molecular confirmation inside the junction. We have performed systematic first principles study on the inelastic electron tunneling spectroscopy of this classic junction. By comparing the calculated spectra with four different experimental results, the most possible conformations of the molecule under different experimental conditions have been successfully determined. The relationship between the contact configuration and the resulted spectra is revealed. It demonstrates again that one should always combine the theoretical and experimental inelastic electron tunneling spectra to determine the molecular conformation in a junction. Our simulations have also suggested that in terms of the reproducibility and stability, the electromigrated nanogap technique is much better than the mechanically controllable break junction technique.
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Affiliation(s)
- Li-Li Lin
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, PR China
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Pacheco AB, Iyengar SS. Multistageab initioquantum wavepacket dynamics for electronic structure and dynamics in open systems: Momentum representation, coupled electron-nuclear dynamics, and external fields. J Chem Phys 2011; 134:074107. [DOI: 10.1063/1.3534797] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lin LL, Song XN, Luo Y, Wang CK. Formation and electronic transport properties of bimolecular junctions based on aromatic coupling. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2010; 22:325102. [PMID: 21386484 DOI: 10.1088/0953-8984/22/32/325102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A systematic first-principles study on conductance-voltage characteristics of bi-(quasi)oligo(phenylene ethynylene)-monothiol molecular junctions reported by Wu et al (2008 Nat. Nanotechnol. 3 569) is presented. The so-called ortho- and para-conformations of the bimolecular junction are considered. Our calculation indicates that the bimolecular junction prefers to take the ortho-conformation because of its lower energy. The simulation supports the experimental findings that aromatic coupling between two molecules is strong enough to induce the formation of molecular junctions. By comparing with experimental results, structure parameters for a probable bimolecular junction are determined. The underlying mechanism for formation of the bimolecular junction and its electron transport is discussed.
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Affiliation(s)
- Li-Li Lin
- College of Physics and Electronics, Shandong Normal University, Jinan 250014, People's Republic of China
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Tian JH, Yang Y, Liu B, Schöllhorn B, Wu DY, Maisonhaute E, Muns AS, Chen Y, Amatore C, Tao NJ, Tian ZQ. The fabrication and characterization of adjustable nanogaps between gold electrodes on chip for electrical measurement of single molecules. NANOTECHNOLOGY 2010; 21:274012. [PMID: 20571199 DOI: 10.1088/0957-4484/21/27/274012] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This work reports on a new method to fabricate mechanically controllable break junctions (MCBJ) with finely adjustable nanogaps between two gold electrodes on solid state chips for characterizing electron transport properties of single molecules. The simple, low cost, robust and reproducible fabrication method combines conventional photolithography, chemical etching and electrodeposition to produce suspended electrodes separated with nanogaps. The MCBJ devices fabricated by the method can undergo many cycles in which the nanogap width can be precisely and repeatedly varied from zero to several nanometers. The method improves the success rate of the MCBJ experiments. Using these devices the electron transport properties of a typical molecular system, commercially available benzene-1,4-dithiol (BDT), have been studied. The I-V and G-V characteristic curves of BDT and the conductance value for a single BDT molecule established the excellent device suitability for molecular electronics research.
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Affiliation(s)
- Jing-Hua Tian
- State Key Laboratory of Physical Chemistry of Solid Surfaces and LIA CNRS XiamENS NanoBioChem, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, People's Republic of China.
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Fu Q, Luo Y, Yang J, Hou J. Understanding the concept of randomness in inelastic electron tunneling excitations. Phys Chem Chem Phys 2010; 12:12012-23. [DOI: 10.1039/b926310a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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21
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Haiss W, Martin S, Scullion LE, Bouffier L, Higgins SJ, Nichols RJ. Anomalous length and voltage dependence of single molecule conductance. Phys Chem Chem Phys 2009; 11:10831-8. [DOI: 10.1039/b910194b] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kim WY, Choi YC, Min SK, Cho Y, Kim KS. Application of quantum chemistry to nanotechnology: electron and spin transport in molecular devices. Chem Soc Rev 2009; 38:2319-33. [DOI: 10.1039/b820003c] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Jiang J, Kula M, Luo Y. Molecular modeling of inelastic electron transport in molecular junctions. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2008; 20:374110. [PMID: 21694417 DOI: 10.1088/0953-8984/20/37/374110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A quantum chemical approach for the modeling of inelastic electron tunneling spectroscopy of molecular junctions based on scattering theory is presented. Within a harmonic approximation, the proposed method allows us to calculate the electron-vibration coupling strength analytically, which makes it applicable to many different systems. The calculated inelastic electron transport spectra are often in very good agreement with their experimental counterparts, allowing the revelation of detailed information about molecular conformations inside the junction, molecule-metal contact structures, and intermolecular interaction that is largely inaccessible experimentally.
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Affiliation(s)
- Jun Jiang
- Department of Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
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Cao H, Jiang J, Ma J, Luo Y. Temperature-Dependent Statistical Behavior of Single Molecular Conductance in Aqueous Solution. J Am Chem Soc 2008; 130:6674-5. [DOI: 10.1021/ja8007648] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hui Cao
- Department of Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden, School of Chemistry and Chemical Engineering, Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University, Nanjing 210093, China, and National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, China
| | - Jun Jiang
- Department of Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden, School of Chemistry and Chemical Engineering, Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University, Nanjing 210093, China, and National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, China
| | - Jing Ma
- Department of Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden, School of Chemistry and Chemical Engineering, Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University, Nanjing 210093, China, and National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, China
| | - Yi Luo
- Department of Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden, School of Chemistry and Chemical Engineering, Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of MOE, Nanjing University, Nanjing 210093, China, and National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, China
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25
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Kula M, Luo Y. Effects of intermolecular interaction on inelastic electron tunneling spectra. J Chem Phys 2008; 128:064705. [DOI: 10.1063/1.2832304] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Caspary Toroker M, Peskin U. Electronic transport through molecular junctions with nonrigid molecule-leads coupling. J Chem Phys 2007; 127:154706. [DOI: 10.1063/1.2759916] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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27
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Zou B, Li ZL, Song XN, Luo Y, Wang CK. Effects of field-induced geometry relaxation on the electron transport properties of 4,4′-biphenyldithiol molecular junction. Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.08.076] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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28
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Kula M, Jiang J, Lu W, Luo Y. Effects of hydrogen bonding on current-voltage characteristics of molecular junctions. J Chem Phys 2006; 125:194703. [PMID: 17129146 DOI: 10.1063/1.2364494] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present a first-principles study of hydrogen bonding effect on current-voltage characteristics of molecular junctions. Three model charge-transfer molecules, 2'-amino-4,4'-di(ethynylphenyl)-1-benzenethiolate (DEPBT-D), 4,4'-di(ethynylphenyl)-2'-nitro-1-benzenethiolate (DEPBT-A), and 2'-amino-4,4'-di(ethynylphenyl)-5'-nitro-1-benzenethiolate (DEPBT-DA), have been examined and compared with the corresponding hydrogen bonded complexes formed with different water molecules. Large differences in current-voltage characteristics are observed for DEPBT-D and DEPBT-A molecules with or without hydrogen bonded waters, while relatively small differences are found for DEPBT-DA. It is predicted that the presence of water clusters can drastically reduce the conductivities of the charge-transfer molecules. The underlying microscopic mechanism has been discussed.
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Affiliation(s)
- Mathias Kula
- Theoretical Chemistry, Royal Institute of Technology, AlbaNova, S-106 91 Stockholm, Sweden
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Su W, Jiang J, Lu W, Luo Y. First-principles study of electrochemical gate-controlled conductance in molecular junctions. NANO LETTERS 2006; 6:2091-4. [PMID: 16968031 DOI: 10.1021/nl061376z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
A first-principles computational method is developed to study the electrochemical gate-controlled conductance in molecular junctions. It has been applied to a single molecular field-effect transistor made by a perylene tetracaboxylic diimide molecule connected to gold electrodes and has successfully reproduced the experimentally observed huge gate voltage effect on the current. It is found that such a significant gain is a result of the large polarization of the molecule induced by the huge local electrical field generated by the electrochemical gate. The resonant electron tunneling through unoccupied molecular orbitals is shown to be the dominant transport process.
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Affiliation(s)
- Wenyong Su
- Department of Theoretical Chemistry, Royal Institute of Technology, AlbaNova, S-106 91 Stockholm, Sweden
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Yan XW, Liu RJ, Li ZL, Zou B, Song XN, Wang CK. Contact configuration dependence of conductance of 1,4-phenylene diisocyanide molecular junction. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.08.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kula M, Jiang J, Luo Y. Probing molecule-metal bonding in molecular junctions by inelastic electron tunneling spectroscopy. NANO LETTERS 2006; 6:1693-8. [PMID: 16895358 DOI: 10.1021/nl060951w] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
We present first-principles calculations for the inelastic electron tunneling spectra (IETS) of three molecules, 1-undecane thiol (C11), alpha,omega-bis(thioacetyl)oligophenylenethynylene (OPE), and alpha,omega-bis(thioacetyl)oligophenylenevinylene (OPV), sandwiched between two gold electrodes. We have demonstrated that IETS is very sensitive to the bonding between the molecule and electrodes. In comparison with experiment of Kushmerick et al. (Nano Lett. 2004, 4, 639), it has been concluded that the C11 forms a strong chemical bond, while the bonding of the OPE and OPV systems are slightly weaker. All experimental spectral features have been correctly assigned.
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Affiliation(s)
- Mathias Kula
- Theoretical Chemistry, Royal Institute of Technology, AlbaNova, S-106 91 Stockholm, Sweden
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Jiang J, Liu K, Lu W, Luo Y. An elongation method for first principle simulations of electronic structures and electron transport properties of finite nanostructures. J Chem Phys 2006; 124:214711. [PMID: 16774435 DOI: 10.1063/1.2207137] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
An effective elongation method has been developed to study electronic structures and electron transport properties of nanoelectronic and bioelectronic devices at a hybrid density functional theory level. It enables to treat finite nanostructures consisting of as many as 28 000 electrons and has been successfully applied to sub-120-nm-long conjugated polymers, sub-60-nm-long single-walled carbon nanotubes, and 30 base-pair DNA molecules. The calculated current-voltage characteristics of different systems are found to be in good agreement with the experiments. Some unexpected behaviors of these nanosized devices have been discovered.
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Affiliation(s)
- Jun Jiang
- Theoretical Chemistry, Royal Institute of Technology, AlbaNova, S-106 91 Stockholm, Sweden and National Lab for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, China
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