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Title: How Precisely Can Individual Molecules Be Analyzed? A Case Study on Locally Quantifying Forces and Energies Using Scanning Probe Microscopy

Journal Article · · ACS Nano

Recent advances in scanning probe microscopy methodology have enabled the measurement of tip-sample interactions with picometer accuracy in all three spatial dimensions, thereby providing a detailed site-specific and distance-dependent picture of the related properties. This paper explores the degree of detail and accuracy that can be achieved in locally quantifying probe-molecule interaction forces and energies for adsorbed molecules. Toward this end, cobalt phthalocyanine (CoPc), a promising CO2 reduction catalyst, was studied on Ag(111) as a model system using low-temperature, ultrahigh vacuum noncontact atomic force microscopy. Data were recorded as a function of distance from the surface, from which detailed three-dimensional maps of the molecule's interaction with the tip for normal and lateral forces as well as the tip-molecule interaction potential were constructed. The data were collected with a CO molecule at the tip apex, which enabled a detailed visualization of the atomic structure. Determination of the tip-substrate interaction as a function of distance allowed isolation of the molecule-tip interactions; when analyzing these in terms of a Lennard-Jones-type potential, the atomically resolved equilibrium interaction energies between the CO tethered to the tip and the CoPc molecule could be recovered. Interaction energies peaked at less than 160 meV, indicating a physisorption interaction. As expected, the interaction was weakest at the aromatic hydrogens around the periphery of the molecule and strongest surrounding the metal center. In conclusion, the interaction, however, did not peak directly above the Co atom but rather in pockets surrounding it.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); National Science Foundation (NSF)
Grant/Contract Number:
SC0012704; CHE-2203589
OSTI ID:
2283295
Report Number(s):
BNL-225243-2024-JAAM
Journal Information:
ACS Nano, Vol. 18, Issue 5; ISSN 1936-0851
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (92)

Sub-angstrom noninvasive imaging of atomic arrangement in 2D hybrid perovskites journal April 2022
Atomic-Scale Force-Vector Fields journal October 2008
Functional Phthalocyanine Molecular Materials book February 2010
Direct electrosynthesis of methylamine from carbon dioxide and nitrate journal April 2021
Real space imaging of electron scattering phenomena at metal surfaces
  • Avouris, Ph.; Lyo, I. -W.; Walkup, R. E.
  • Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, Vol. 12, Issue 3 https://doi.org/10.1116/1.587314
journal May 1994
Lateral Force Microscopy Reveals the Energy Barrier of a Molecular Switch journal February 2021
The Electric Field of CO Tips and Its Relevance for Atomic Force Microscopy journal February 2016
Adsorption energies on transition metal surfaces: towards an accurate and balanced description journal November 2022
Theory of tip‐dependent imaging of adsorbates in the STM: CO on Cu(111) journal December 2005
Forces and frequency shifts in atomic-resolution dynamic-force microscopy journal December 1997
Atomically Resolved Chemical Reactivity of Small Fe Clusters journal March 2020
Data acquisition and analysis procedures for high-resolution atomic force microscopy in three dimensions journal June 2009
Molecular Control of Heterogeneous Electrocatalysis through Graphite Conjugation journal November 2019
Three-dimensional imaging of short-range chemical forces with picometre resolution journal April 2009
Mechanism of high-resolution STM/AFM imaging with functionalized tips journal August 2014
Accurate formulas for interaction force and energy in frequency modulation force spectroscopy journal March 2004
Theoretical Insights into Adsorption of Cobalt Phthalocyanine on Ag(111): A Combination of Chemical and van der Waals Bonding journal October 2013
Review Article: Structures of phthalocyanine molecules on surfaces studied by STM journal December 2012
Advances of Cobalt Phthalocyanine in Electrocatalytic CO2 Reduction to CO: a Mini Review journal August 2022
Quantifying Molecular Stiffness and Interaction with Lateral Force Microscopy journal February 2014
Enhanced Electrocatalytic Activity of Primary Amines for CO2 Reduction Using Copper Electrodes in Aqueous Solution journal January 2020
Cohesion journal September 1931
Frontiers of magnetic force microscopy journal February 2019
Adsorption structures and energetics of molecules on metal surfaces: Bridging experiment and theory journal May 2016
Controlling the Kondo Effect of an Adsorbed Magnetic Ion Through Its Chemical Bonding journal September 2005
Aqueous Photoelectrochemical CO2 Reduction to CO and Methanol over a Silicon Photocathode Functionalized with a Cobalt Phthalocyanine Molecular Catalyst journal December 2022
The flexible and modern open source scanning probe microscopy software package GXSM journal March 2003
�ber das Verh�ltnis der van der Waalsschen Kr�fte zu den hom�opolaren Bindungskr�ften journal July 1930
Breaking a dative bond with mechanical forces journal September 2021
Recent Advances in CO 2 Reduction Electrocatalysis on Copper journal June 2018
Real-space imaging of molecular structure and chemical bonding by single-molecule inelastic tunneling probe journal May 2014
Atomic Force Microscopy for Molecular Structure Elucidation journal February 2018
Single-Bond Formation and Characterization with a Scanning Tunneling Microscope journal November 1999
Quantifying the evolution of atomic interaction of a complex surface with a functionalized atomic force microscopy tip journal August 2020
Phthalocyanine-Based Organic Thin-Film Transistors: A Review of Recent Advances journal June 2015
Domino electroreduction of CO2 to methanol on a molecular catalyst journal November 2019
Scanning Tunneling Microscopy of Metal Phthalocyanines:  d 7 and d 9 Cases journal January 1996
Room-temperature reproducible spatial force spectroscopy using atom-tracking technique journal October 2005
Review of time-resolved non-contact electrostatic force microscopy techniques with applications to ionic transport measurements journal January 2019
Erratum: Recent advances in submolecular resolution with scanning probe microscopy journal May 2011
The Force Needed to Move an Atom on a Surface journal February 2008
Dynamics of Electron-Induced Manipulation of Individual CO Molecules on Cu(111) journal March 1998
Three-Dimensional Atomic Force Microscopy - Taking Surface Imaging to the Next Level journal April 2010
Imaging Three-Dimensional Surface Objects with Submolecular Resolution by Atomic Force Microscopy journal March 2015
Natural steric analysis: Ab initio van der Waals radii of atoms and ions journal October 1997
Forces During the Controlled Displacement of Organic Molecules journal January 2013
A New Method of Interpolation and Smooth Curve Fitting Based on Local Procedures journal October 1970
Real-Space Identification of Intermolecular Bonding with Atomic Force Microscopy journal September 2013
Optically Active Porphyrin and Phthalocyanine Systems journal May 2016
Observation of Multiple Vibrational Modes in Ultrahigh Vacuum Tip-Enhanced Raman Spectroscopy Combined with Molecular-Resolution Scanning Tunneling Microscopy journal January 2012
Exploring atomic-scale lateral forces in the attractive regime: a case study on graphite (0001) journal September 2012
Van der Waals Radii of Elements journal September 2001
Atomic-Scale Distribution of Water Molecules at the Mica-Water Interface Visualized by Three-Dimensional Scanning Force Microscopy journal January 2010
Open source scanning probe microscopy control software package GXSM
  • Zahl, Percy; Wagner, Thorsten; Möller, Rolf
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 28, Issue 3 https://doi.org/10.1116/1.3374719
journal May 2010
Theoretical and experimental comparison of SnPc, PbPc, and CoPc adsorption on Ag(111) journal February 2010
Reversible Oxidation of Blue Phosphorus Monolayer on Au(111) journal July 2019
Atomic- and Molecular-Resolution Mapping of Solid–Liquid Interfaces by 3D Atomic Force Microscopy journal November 2018
Heterogeneous Molecular Catalysts of Metal Phthalocyanines for Electrochemical CO2 Reduction Reactions journal August 2021
Mechanism-guided realization of selective carbon monoxide electroreduction to methanol journal August 2023
Image correction for atomic force microscopy images with functionalized tips journal May 2014
Phthalocyanine in perovskite solar cells: a review journal January 2023
The Chemical Structure of a Molecule Resolved by Atomic Force Microscopy journal August 2009
A Molecular Approach to Quantum Sensing journal April 2021
Probing Molecular-Scale Catalytic Interactions between Oxygen and Cobalt Phthalocyanine Using Tip-Enhanced Raman Spectroscopy journal April 2018
Probing three-dimensional surface force fields with atomic resolution: Measurement strategies, limitations, and artifact reduction journal January 2012
Physisorption of CO on Ag(111): investigation of the monolayer and the multilayer through HREELS, ARUPS, and TDS journal August 1991
Supramolecular Patterns Controlled by Electron Interference and Direct Intermolecular Interactions journal July 2009
A method of bivariate interpolation and smooth surface fitting based on local procedures journal January 1974
Piezoresponse force microscopy (PFM) journal November 2011
Electronic structure and exchange interactions in cobalt-phthalocyanine chains journal July 2013
Effect of Molecule−Substrate Interaction on Thin-Film Structures and Molecular Orientation of Pentacene on Silver and Gold journal July 2007
Combined low-temperature scanning tunneling/atomic force microscope for atomic resolution imaging and site-specific force spectroscopy journal March 2008
Three-dimensional interaction force and tunneling current spectroscopy of point defects on rutile TiO2(110) journal February 2016
The qPlus sensor, a powerful core for the atomic force microscope journal January 2019
Phthalocyanine, naphthalocyanine and their derivatives as corrosion inhibitors: A review journal July 2021
Magnetic exchange force microscopy with atomic resolution journal March 2007
Optimizing qPlus sensor assemblies for simultaneous scanning tunneling and noncontact atomic force microscopy operation based on finite element method analysis journal January 2017
High-speed force sensor for force microscopy and profilometry utilizing a quartz tuning fork journal December 1998
Active Sites of Cobalt Phthalocyanine in Electrocatalytic CO2 Reduction to Methanol journal December 2023
Chlorin, Phthalocyanine, and Porphyrin Types Derivatives in Phototreatment of Cutaneous Manifestations: A Review
  • De Annunzio, Sarah Raquel; Costa, Natalia Caroline Silva; Mezzina, Rafaela Dalbello
  • International Journal of Molecular Sciences, Vol. 20, Issue 16 https://doi.org/10.3390/ijms20163861
journal August 2019
Self-Assembled Patterns and Young’s Modulus of Single-Layer Naphthalocyanine Molecules on Ag(111) journal April 2015
New insights into the electrochemical reduction of carbon dioxide on metallic copper surfaces journal January 2012
Separation of interactions by noncontact force microscopy journal April 2000
Energies of Adsorbed Catalytic Intermediates on Transition Metal Surfaces: Calorimetric Measurements and Benchmarks for Theory journal March 2019
Electronic Structure of Metallophthalocyanines, MPc (M = Fe, Co, Ni, Cu, Zn, Mg) and Fluorinated MPc journal May 2021
Quantitative Atomic Force Microscopy with Carbon Monoxide Terminated Tips journal January 2011
Impact of surface chemistry journal September 2010
Three-dimensional force spectroscopy of KBr(001) by tuning fork-based cryogenic noncontact atomic force microscopy
  • Such, Bartosz; Glatzel, Thilo; Kawai, Shigeki
  • Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, Vol. 28, Issue 3 https://doi.org/10.1116/1.3382230
journal May 2010
Organic structure determination using atomic-resolution scanning probe microscopy journal August 2010
Numerical performance analysis of quartz tuning fork-based force sensors journal December 2016
High-Resolution Molecular Orbital Imaging Using a p -Wave STM Tip journal August 2011
Electrochemical CO2 reduction (CO2RR) to multi-carbon products over copper-based catalysts journal March 2022