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Molecular Photography in the Undergraduate Laboratory: Identification of Functional Groups Using Scanning Tunneling Microscopy
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Abstract
A scanning tunneling microscope (STM) investigation of bare graphite and 11-bromoundecanol adsorbed on graphite has been performed in the undergraduate physical chemistry laboratory at Columbia University. In addition to collecting substrate (surface) and adsorbate (molecule) images, students compare their experimental STM topographs with the shapes of the frontier molecular orbitals of a structurally similar brominated alcohol generated using the Spartan computation program. This investigation stresses the use of the STM as a "molecular camera" with which students can visualize large-scale molecular assemblies and identify chemically significant portions of the molecules. Further, it demonstrates an area where theoretical calculations can be coupled with experimental measurements in a unified setting.
Keywords (Audience):
Upper-Division UndergraduateKeywords (Domain):
Physical ChemistryKeywords (Pedagogy):
Computer-Based LearningKeywords (Subject):
Materials ScienceCiting Articles
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This article has been cited by 13 ACS Journal articles (5 most recent appear below).
Preparation of Chemically Etched Tips for Ambient Instructional Scanning Tunneling Microscopy
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Margot J. Zaccardi, Kurt Winkelmann and Joel A. OlsonJournal of Chemical Education2010 87 (3), 308-310A first-year laboratory experiment that utilizes concepts of electrochemical tip etching for scanning tunneling microscopy (STM) is described. This experiment can be used in conjunction with any STM experiment. Students electrochemically etch gold STM ...
Exploring the Scanning Probe: A Simple Hands-on Experiment Simulating the Operation and Characteristics of the Atomic Force Microscope
Anthony Layson, Ryan Leib and Dale Teeters2010 1010 (), 167-176Exploring the Scanning Probe: A Simple Hands-on Experiment Simulating the Operation and Characteristics of the Atomic Force Microscope
Anthony Layson, Ryan Leib and Dale Teeters2010 1010 (), 167-176A simple yet effective model atomic force microscope is presented for the purpose of introducing students to the field of scanning probe microscopy. The model is used to demonstrate the basic characteristics of the atomic force microscope by realistically ...
Scanning Tunneling Microscopy and Orbital-Mediated Tunneling Spectroscopy of N,N′-Dioctyl-1,8:4,5-naphthalenediimide Adsorbed on Highly Ordered Pyrolytic Graphite from Various Solvents and in Different Environments
Leslie Kleiner-Shuhler, Rebekah Brittain, Martin R. Johnston and K. W. HippsThe Journal of Physical Chemistry C2008 112 (38), 14907-14912Scanning Tunneling Microscopy and Orbital-Mediated Tunneling Spectroscopy of N,N′-Dioctyl-1,8:4,5-naphthalenediimide Adsorbed on Highly Ordered Pyrolytic Graphite from Various Solvents and in Different Environments
Leslie Kleiner-Shuhler, Rebekah Brittain, Martin R. Johnston and K. W. HippsThe Journal of Physical Chemistry C2008 112 (38), 14907-14912Scanning tunneling microscopy (STM) and orbital-mediated tunneling spectroscopy (OMTS) are reported for N,N′-dioctyl-1,8:4,5-naphthalenediimide (diimide) adsorbed on highly ordered pyrolytic graphite (HOPG). The diimide forms well ordered monolayers ...
An Experimental and Theoretical Study of the Formation of Nanostructures of Self-Assembled Cyanuric Acid through Hydrogen Bond Networks on Graphite
Kavita Kannappan, Tova L. Werblowsky, Kwang T. Rim, Bruce J. Berne, and George W. FlynnThe Journal of Physical Chemistry B2007 111 (24), 6634-6642An Experimental and Theoretical Study of the Formation of Nanostructures of Self-Assembled Cyanuric Acid through Hydrogen Bond Networks on Graphite
Kavita Kannappan, Tova L. Werblowsky, Kwang T. Rim, Bruce J. Berne, and George W. FlynnThe Journal of Physical Chemistry B2007 111 (24), 6634-6642The self-assembly of cyanuric acid into ordered nanostructures on a crystalline substrate, highly ordered pyrolytic graphite (HOPG), has been investigated at low temperature under ultrahigh vacuum (UHV) conditions by means of scanning tunneling microscopy ...
Scanning Tunneling Microscopy and Orbital-Mediated Tunneling Spectroscopy Study of 1,5-Di(octyloxy)anthracene Adsorbed on Highly Ordered Pyrolytic Graphite from Various Solvents and in Different Environments
Matthew Pokrifchak, Tracey Turner, Ian Pilgrim, Martin R. Johnston, and K. W. HippsThe Journal of Physical Chemistry C2007 111 (21), 7735-7740Scanning Tunneling Microscopy and Orbital-Mediated Tunneling Spectroscopy Study of 1,5-Di(octyloxy)anthracene Adsorbed on Highly Ordered Pyrolytic Graphite from Various Solvents and in Different Environments
Matthew Pokrifchak, Tracey Turner, Ian Pilgrim, Martin R. Johnston, and K. W. HippsThe Journal of Physical Chemistry C2007 111 (21), 7735-7740Scanning tunneling microscopy (STM) and orbital mediated tunneling spectroscopy (OMTS) are reported for 1,5-di(octyloxy)anthracene (15DA) adsorbed on highly ordered pyrolytic graphite (HOPG). 15DA forms well-ordered monolayers either at the interface ...
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- Received: August 03, 2009
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