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Pyridyl-ended molecular junctions show high and low breaking forces successively in formation process and at the same time exhibit intriguing conductance switching behaviors. To understand the forming process of pyridyl-ended molecular junctions, the interaction between 4,4′-bipyridine molecule and gold electrode is studied by the ab initio-based adiabatic simulation method. The processes that the molecule moves away from electrode tip with different contact configurations are simulated, and the molecule-electrode interface evolutions, energy of the molecule-electrode system and the force between molecules and electrode are calculated in the simulations. The numerical results show that during the molecule moving away from the pyramid-shaped electrode, the pyridyl is easy to vertically adsorb on the second gold layer of the electrode tip. In this contact configurations, the tip Au atom deviates from the original position due to the lateral pushing force of the pyridyl. It needs about 1.3–1.5 nN stretching force for the pyridyl breaking from the second gold layer and switching to the tip Au atom, which is evidently larger than the force of 0.8–1.0 nN for the molecule breaking from the tip Au atom. This result is well consistent with the experimental observations, which thus reveals the relationship between the interface structures and the stretching force in the formation process of bipyridyl molecular junction in the experiment. The interaction between 4,4′-bipyridine molecule and plane-shaped gold electrode is very weak. It needs no more than 0.5 nN for the molecule breaking from the plane-shaped gold electrode. However, when the molecule adsorbs on the single Au atom which is adsorbed on the surface of plane-shaped electrode, the molecule can sustain 1.7 nN stretching force. Our study shows that the ab initio-based adiabatic stretching simulation method can not only reveal the geometric evolution process of molecule-electrode systems, but also identify the specific contact configurations between molecule and electrode.
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Keywords:
- molecular device /
- molecule-electrode interaction /
- interface configuration evolution /
- 4 /
- 4'-bipyridine molecule /
- atom-scale structure identification
[1] Reed M A, Zhou C, Muller C J, Burgin T P, Tour J M 1997 Science 278 252Google Scholar
[2] Xu B Q, Tao N J 2003 Science 301 1221Google Scholar
[3] Xiang D, Jeong H, Kim D, Lee T, Cheng Y, Wang Q, Mayer D 2013 Nano Lett. 13 2809Google Scholar
[4] Xiang D, Wang X L, Jia C C, Lee T, Guo X F 2016 Chem. Rev. 116 4318Google Scholar
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[8] Xin N, Wang J Y, Jia C C, Liu Z T, Zhang X S, Yu C M, Li M L, Wang S P, Gong Y, Sun H T, Zhang G X, Liu Z R, Zhang G Y, Liao J H, Zhang D Q, Guo X F 2017 Nano Lett. 17 856Google Scholar
[9] Roldan D, Kaliginedi V, Cobo S, Kolivoska V, Bucher C, Hong W J, Royal G, Wandlowski T 2013 J. Am. Chem. Soc. 135 5974Google Scholar
[10] Jiang P, Morales G M, You W, Yu L P 2004 Angew. Chem. Int. Ed. 43 4471Google Scholar
[11] Morales G M, Jiang P, Yuan S W, Lee Y G, Sanchez A, You W, Yu L P 2005 J. Am. Chem. Soc. 127 10456Google Scholar
[12] Capozzi B, Xia J L, Adak O, Dell E J, Liu Z F, Taylor J C, Neaton J B, Campos L M, Venkataraman L 2015 Nat. Nanotechnol. 10 522Google Scholar
[13] Sun F, Liu R, Liu L, Yan Y, Wang S S, Yang Z, Suo Y Q, Wang C K, Li Z L 2022 Physica E 140 115186Google Scholar
[14] Han Y M, Nickle C, Zhang Z Y, Astier H P A G, Duffin T J, Qi D C, Wang Z, Del Barco E, Thompson D, Nijhuis C A 2020 Nat. Mater. 19 843Google Scholar
[15] Kumar S, Merelli M, Danowski W, Rudolf P, Feringa B L, Chiechi R C 2019 Adv. Mater. 31 1807831Google Scholar
[16] Lee J, Chang H J, Kim S, Bang G S, Lee H 2009 Angew. Chem. Int. Ed. 48 8501Google Scholar
[17] Schedin F, Geim A K, Morozov S V, Hill E W, Blake P, Katsnelson M I, Novoselov K S 2007 Nat. Mater. 6 652Google Scholar
[18] Zhou M, Lu Y H, Cai Y Q, Zhang C, Feng Y P 2011 Nanotechnology 22 385502Google Scholar
[19] Zou D Q, Zhao W K, Cui B, Li D M, Liu D S 2018 Phys. Chem. Chem. Phys. 20 2048Google Scholar
[20] Zhao W K, Zou D Q, Sun Z P, Yu Y J, Yang C L 2018 Phys. Lett. A 382 2666Google Scholar
[21] Li Z L, Fu X X, Zhang G P, Wang C K 2013 Chin. J. Chem. Phys. 26 185Google Scholar
[22] Schliemann J, Egues J C, Loss D 2003 Phys. Rev. Lett. 90 146801Google Scholar
[23] An Y P, Hou Y S, Wang K, Gong S J, Ma C L, Zhao C X, Wang T X, Jiao Z Y, Wang H Y, Wu R Q 2020 Adv. Funct. Mater. 30 2002939Google Scholar
[24] Mei J G, Diao Y, Appleton A L, Fang L, Bao Z N 2013 J. Am. Chem. Soc. 135 6724Google Scholar
[25] Liu R, Bi J J, Xie Z, Yin K K, Wang D Y, Zhang G P, Xiang D, Wang C K, Li Z L 2018 Phys. Rev. Appl. 9 054023Google Scholar
[26] Zhao Z K, Liu R, Mayer D, Coppola M, Sun L, Kim Y, Wang C K, Ni L, Chen X, Wang M, Li Z L, Lee T, Xiang D 2018 Small 14 1703815Google Scholar
[27] Frei M, Aradhya S V, Koentopp M, Hybertsen M S, Venkataraman L 2011 Nano Lett. 11 1518Google Scholar
[28] Pan Z C, Li J, Chen L J, Tang Y X, Shi J, Liu J Y, Liao J L, Hong W J 2019 Sci. Chin. Chem. 62 1245Google Scholar
[29] Quek S Y, Kamenetska M, Steigerwald M L, Choi H J, Louie S G, Hybertsen M S, Neaton J B, Venkataraman L 2009 Nat. Nanotechnol. 4 230Google Scholar
[30] Aradhya S V, Frei M, Hybertsen M S, Venkataraman L 2012 Nat. Mater. 11 872Google Scholar
[31] Yang Z, Sun F, Chen D H, Wang Z Q, Wang C K, Li Z L, Qiu S 2022 Chin. Phys. B 31 077202Google Scholar
[32] Xin N, Guan J X, Zhou C G, Chen X J N, Gu C H, Li Y, Ratner M A, Nitzan A, Stoddart J F, Guo X F 2019 Nat. Rev. Phys. 1 211Google Scholar
[33] Gehring P, Thijssen J M, van der Zant H S J 2019 Nat. Rev. Phys. 1 381Google Scholar
[34] Pan Z C, Chen L C, Tang C, Hu Y, Yuan S S, Gao T Y, Shi J, Shi J, Yang Y, Hong W J 2022 Small 18 2107220Google Scholar
[35] Frei M, Aradhya S V, Hybertsen M S, Venkataraman L 2012 J. Am. Chem. Soc. 134 4003Google Scholar
[36] Li C, Pobelov I, Wandlowski T, Bagrets A, Arnold A, Evers F 2008 J. Am. Chem. Soc. 130 318Google Scholar
[37] Li Z L, Sun F, Bi J J, Liu R, Suo Y Q, Fu H Y, Zhang G P, Song Y Z, Wang D Y, Wang C K 2019 Physica E 106 270Google Scholar
[38] Li Z L, Bi J J, Liu R, Yi X H, Fu H Y, Sun F, Wei M Z, Wang C K 2017 Chin. Phys. B 26 098508Google Scholar
[39] 刘然, 包德亮, 焦扬, 万令文, 李宗良, 王传奎 2014 物理学报 63 068501Google Scholar
Liu R, Bao D L, Jiao Y, Wan L W, Li Z L, Wang C K 2014 Acta Phys. Sin. 63 068501Google Scholar
[40] Arroyo C R, Leary E, Castellanos-Gomez A, Rubio-Bollinger G, Gonzalez M T, Agrait N 2011 J. Am. Chem. Soc. 133 14313Google Scholar
[41] Park Y S, Whalley A C, Kamenetska M, Steigerwald M L, Hybertsen M S, Nuckolls C, Venkataraman L 2007 J. Am. Chem. Soc. 129 15768Google Scholar
[42] Aradhya S V, Venkataraman L 2013 Nat. Nanotechnol. 8 399Google Scholar
[43] Venkataraman L, Klare J E, Nuckolls C, Hybertsen M S, Steigerwald M L 2006 Nature 442 904Google Scholar
[44] Venkataraman L, Klare J E, Tam I W, Nuckolls C, Hybertsen M S, Steigerwald M L 2006 Nano Lett. 6 458Google Scholar
[45] Hybertsen M S, Venkataraman L, Klare J E, Whalley A C, Steigerwald M L, Nuckolls C 2008 J. Phys. Condens. Matter 20 374115Google Scholar
[46] Mezei G, Balogh Z, Magyarkuti A, Halbritter A 2020 J. Phys. Chem. Lett. 11 8053Google Scholar
[47] Magyarkuti A, Balogh Z, Mezei G, Halbritter A 2021 J. Phys. Chem. Lett. 12 1759Google Scholar
[48] Darancet P, Widawsky J R, Choi H J, Venkataraman L, Neaton J B 2012 Nano Lett. 12 6250Google Scholar
[49] Ismael A K, Wang K, Vezzoli A, Al-Khaykanee M K, Gallagher H E, Grace I M, Lambert C J, Xu B Q, Nichols R J, Higgins S J 2017 Angew. Chem. Int. Ed. 56 15378Google Scholar
[50] Xu B Q, Xiao X Y, Tao N J 2003 J. Am. Chem. Soc. 125 16164Google Scholar
[51] Kamenetska M, Quek S Y, Whalley A C, Steigerwald M L, Choi H J, Louie S G, Nuckolls C, Hybertsen M S, Neaton J B, Venkataraman L 2010 J. Am. Chem. Soc. 132 6817Google Scholar
[52] 索雨晴, 刘然, 孙峰, 牛乐乐, 王双双, 刘琳, 李宗良 2020 物理学报 69 208502Google Scholar
Suo Y Q, Liu R, Sun F, Niu L L, Wang S S, Liu L, Li Z L 2020 Acta Phys. Sin. 69 208502Google Scholar
[53] Wang S S, Yang Z, Sun F, Liu R, Liu L, Fu X X, Wang C K, Li Z L 2021 J. Phys. Chem. C 125 27290Google Scholar
[54] Yi X H, Liu R, Bi J J, Jiao Y, Wang C K, Li Z L 2016 Chin. Phys. B 25 128503Google Scholar
[55] Frisch M J, Trucks G W, Schlegel H B, et al. 2016 Gaussian 16 Rev. A. 03 (Wallingford, CT)
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图 1 4, 4′-二吡啶分子连接到不同构型金电极上的初始结构 (a) 分子连接在理想锥形电极旁边(体系I); (b) 分子与只有最尖端两层金原子构成锥形的电极相连接, 电极的第三层有较多金原子形成平台构型(体系II); (c) 分子与吸附有孤立金原子的平面电极相连接(体系III); (d) 分子与平面电极相连接(体系Ⅳ)
Figure 1. The initial configurations for 4, 4′-bipyridine connecting with different gold electrode: (a) The molecule is connected beside ideal pyramid-shaped gold electrode (system Ⅰ); (b) the molecule connects with the gold electrode in which only the top two layers of Au atoms form pyramid shape (system Ⅱ). In this system the third layer of the electrode contains more Au atoms which form a platform; (c) the molecule adsorbs on planar-shaped gold electrode with a single Au atom on the electrode surface (system Ⅲ); (d) the molecule adsorbs on planar-shaped gold electrode without single surface Au atom (system Ⅳ).
图 4 体系I、体系II 和体系III中部分同时离域到分子和电极上的占据轨道的空间分布, 其中括号中的数字分别为总的离域占据轨道数目和对N-Au键有贡献的轨道数目
Figure 4. The spatical distributions of part delocalized occupied molecular orbitals for system I, system II and system III. These orbitals are both delocalized on the molecule and electrode. The figures in the brakets are the total numbers of the delocalized occupied molecular orbitals and the orbitals which have contributions to N-Au bond.
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[1] Reed M A, Zhou C, Muller C J, Burgin T P, Tour J M 1997 Science 278 252Google Scholar
[2] Xu B Q, Tao N J 2003 Science 301 1221Google Scholar
[3] Xiang D, Jeong H, Kim D, Lee T, Cheng Y, Wang Q, Mayer D 2013 Nano Lett. 13 2809Google Scholar
[4] Xiang D, Wang X L, Jia C C, Lee T, Guo X F 2016 Chem. Rev. 116 4318Google Scholar
[5] Liu R, Han Y M, Sun F, Khatri G, Kwon J, Nickle C, Wang L J, Wang C K, Thompson D, Li Z L, Nijhuis C A, Del Barco E 2022 Adv. Mater. 34 2202135Google Scholar
[6] Jia C C, Migliore A, Xin N, Huang S Y, Wang J Y, Yang Q, Wang S P, Chen H L, Wang D M, Feng B Y, Nitzan A, Guo X F 2016 Science 6292 1443Google Scholar
[7] Cai S N, Deng W T, Huang F F, Chen L J, Tang C, He W X, Long S C, Li R H, Tan Z B, Liu J Y, Shi J, Liu Z T, Xiao Z Y, Zhang D Q, Hong W J 2019 Angew. Chem. Int. Ed. 58 3829Google Scholar
[8] Xin N, Wang J Y, Jia C C, Liu Z T, Zhang X S, Yu C M, Li M L, Wang S P, Gong Y, Sun H T, Zhang G X, Liu Z R, Zhang G Y, Liao J H, Zhang D Q, Guo X F 2017 Nano Lett. 17 856Google Scholar
[9] Roldan D, Kaliginedi V, Cobo S, Kolivoska V, Bucher C, Hong W J, Royal G, Wandlowski T 2013 J. Am. Chem. Soc. 135 5974Google Scholar
[10] Jiang P, Morales G M, You W, Yu L P 2004 Angew. Chem. Int. Ed. 43 4471Google Scholar
[11] Morales G M, Jiang P, Yuan S W, Lee Y G, Sanchez A, You W, Yu L P 2005 J. Am. Chem. Soc. 127 10456Google Scholar
[12] Capozzi B, Xia J L, Adak O, Dell E J, Liu Z F, Taylor J C, Neaton J B, Campos L M, Venkataraman L 2015 Nat. Nanotechnol. 10 522Google Scholar
[13] Sun F, Liu R, Liu L, Yan Y, Wang S S, Yang Z, Suo Y Q, Wang C K, Li Z L 2022 Physica E 140 115186Google Scholar
[14] Han Y M, Nickle C, Zhang Z Y, Astier H P A G, Duffin T J, Qi D C, Wang Z, Del Barco E, Thompson D, Nijhuis C A 2020 Nat. Mater. 19 843Google Scholar
[15] Kumar S, Merelli M, Danowski W, Rudolf P, Feringa B L, Chiechi R C 2019 Adv. Mater. 31 1807831Google Scholar
[16] Lee J, Chang H J, Kim S, Bang G S, Lee H 2009 Angew. Chem. Int. Ed. 48 8501Google Scholar
[17] Schedin F, Geim A K, Morozov S V, Hill E W, Blake P, Katsnelson M I, Novoselov K S 2007 Nat. Mater. 6 652Google Scholar
[18] Zhou M, Lu Y H, Cai Y Q, Zhang C, Feng Y P 2011 Nanotechnology 22 385502Google Scholar
[19] Zou D Q, Zhao W K, Cui B, Li D M, Liu D S 2018 Phys. Chem. Chem. Phys. 20 2048Google Scholar
[20] Zhao W K, Zou D Q, Sun Z P, Yu Y J, Yang C L 2018 Phys. Lett. A 382 2666Google Scholar
[21] Li Z L, Fu X X, Zhang G P, Wang C K 2013 Chin. J. Chem. Phys. 26 185Google Scholar
[22] Schliemann J, Egues J C, Loss D 2003 Phys. Rev. Lett. 90 146801Google Scholar
[23] An Y P, Hou Y S, Wang K, Gong S J, Ma C L, Zhao C X, Wang T X, Jiao Z Y, Wang H Y, Wu R Q 2020 Adv. Funct. Mater. 30 2002939Google Scholar
[24] Mei J G, Diao Y, Appleton A L, Fang L, Bao Z N 2013 J. Am. Chem. Soc. 135 6724Google Scholar
[25] Liu R, Bi J J, Xie Z, Yin K K, Wang D Y, Zhang G P, Xiang D, Wang C K, Li Z L 2018 Phys. Rev. Appl. 9 054023Google Scholar
[26] Zhao Z K, Liu R, Mayer D, Coppola M, Sun L, Kim Y, Wang C K, Ni L, Chen X, Wang M, Li Z L, Lee T, Xiang D 2018 Small 14 1703815Google Scholar
[27] Frei M, Aradhya S V, Koentopp M, Hybertsen M S, Venkataraman L 2011 Nano Lett. 11 1518Google Scholar
[28] Pan Z C, Li J, Chen L J, Tang Y X, Shi J, Liu J Y, Liao J L, Hong W J 2019 Sci. Chin. Chem. 62 1245Google Scholar
[29] Quek S Y, Kamenetska M, Steigerwald M L, Choi H J, Louie S G, Hybertsen M S, Neaton J B, Venkataraman L 2009 Nat. Nanotechnol. 4 230Google Scholar
[30] Aradhya S V, Frei M, Hybertsen M S, Venkataraman L 2012 Nat. Mater. 11 872Google Scholar
[31] Yang Z, Sun F, Chen D H, Wang Z Q, Wang C K, Li Z L, Qiu S 2022 Chin. Phys. B 31 077202Google Scholar
[32] Xin N, Guan J X, Zhou C G, Chen X J N, Gu C H, Li Y, Ratner M A, Nitzan A, Stoddart J F, Guo X F 2019 Nat. Rev. Phys. 1 211Google Scholar
[33] Gehring P, Thijssen J M, van der Zant H S J 2019 Nat. Rev. Phys. 1 381Google Scholar
[34] Pan Z C, Chen L C, Tang C, Hu Y, Yuan S S, Gao T Y, Shi J, Shi J, Yang Y, Hong W J 2022 Small 18 2107220Google Scholar
[35] Frei M, Aradhya S V, Hybertsen M S, Venkataraman L 2012 J. Am. Chem. Soc. 134 4003Google Scholar
[36] Li C, Pobelov I, Wandlowski T, Bagrets A, Arnold A, Evers F 2008 J. Am. Chem. Soc. 130 318Google Scholar
[37] Li Z L, Sun F, Bi J J, Liu R, Suo Y Q, Fu H Y, Zhang G P, Song Y Z, Wang D Y, Wang C K 2019 Physica E 106 270Google Scholar
[38] Li Z L, Bi J J, Liu R, Yi X H, Fu H Y, Sun F, Wei M Z, Wang C K 2017 Chin. Phys. B 26 098508Google Scholar
[39] 刘然, 包德亮, 焦扬, 万令文, 李宗良, 王传奎 2014 物理学报 63 068501Google Scholar
Liu R, Bao D L, Jiao Y, Wan L W, Li Z L, Wang C K 2014 Acta Phys. Sin. 63 068501Google Scholar
[40] Arroyo C R, Leary E, Castellanos-Gomez A, Rubio-Bollinger G, Gonzalez M T, Agrait N 2011 J. Am. Chem. Soc. 133 14313Google Scholar
[41] Park Y S, Whalley A C, Kamenetska M, Steigerwald M L, Hybertsen M S, Nuckolls C, Venkataraman L 2007 J. Am. Chem. Soc. 129 15768Google Scholar
[42] Aradhya S V, Venkataraman L 2013 Nat. Nanotechnol. 8 399Google Scholar
[43] Venkataraman L, Klare J E, Nuckolls C, Hybertsen M S, Steigerwald M L 2006 Nature 442 904Google Scholar
[44] Venkataraman L, Klare J E, Tam I W, Nuckolls C, Hybertsen M S, Steigerwald M L 2006 Nano Lett. 6 458Google Scholar
[45] Hybertsen M S, Venkataraman L, Klare J E, Whalley A C, Steigerwald M L, Nuckolls C 2008 J. Phys. Condens. Matter 20 374115Google Scholar
[46] Mezei G, Balogh Z, Magyarkuti A, Halbritter A 2020 J. Phys. Chem. Lett. 11 8053Google Scholar
[47] Magyarkuti A, Balogh Z, Mezei G, Halbritter A 2021 J. Phys. Chem. Lett. 12 1759Google Scholar
[48] Darancet P, Widawsky J R, Choi H J, Venkataraman L, Neaton J B 2012 Nano Lett. 12 6250Google Scholar
[49] Ismael A K, Wang K, Vezzoli A, Al-Khaykanee M K, Gallagher H E, Grace I M, Lambert C J, Xu B Q, Nichols R J, Higgins S J 2017 Angew. Chem. Int. Ed. 56 15378Google Scholar
[50] Xu B Q, Xiao X Y, Tao N J 2003 J. Am. Chem. Soc. 125 16164Google Scholar
[51] Kamenetska M, Quek S Y, Whalley A C, Steigerwald M L, Choi H J, Louie S G, Nuckolls C, Hybertsen M S, Neaton J B, Venkataraman L 2010 J. Am. Chem. Soc. 132 6817Google Scholar
[52] 索雨晴, 刘然, 孙峰, 牛乐乐, 王双双, 刘琳, 李宗良 2020 物理学报 69 208502Google Scholar
Suo Y Q, Liu R, Sun F, Niu L L, Wang S S, Liu L, Li Z L 2020 Acta Phys. Sin. 69 208502Google Scholar
[53] Wang S S, Yang Z, Sun F, Liu R, Liu L, Fu X X, Wang C K, Li Z L 2021 J. Phys. Chem. C 125 27290Google Scholar
[54] Yi X H, Liu R, Bi J J, Jiao Y, Wang C K, Li Z L 2016 Chin. Phys. B 25 128503Google Scholar
[55] Frisch M J, Trucks G W, Schlegel H B, et al. 2016 Gaussian 16 Rev. A. 03 (Wallingford, CT)
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