Lee Y. Park

Lee Y. Park

Professor of Chemistry

102 Thompson Chemistry Lab
Department of Chemistry
Williams College
Williamstown, MA 01267

Lab:    Morley Science Lab 148
phone:   413-597-2191
email:    lee.y.park@williams.edu

At Williams College since 1993

Educational Experience

1986 BA, Chemistry Wellesley College

1991 PhD, Inorganic Chemistry Massachusetts Institute of Technology

Other Professional Experience

1991-93 Postdoctoral Researcher IBM Thomas J. Watson Research Center

1997 Visiting Scientist University of Michigan, Ann Arbor

1997- 01 Visiting Scientist Massachusetts Institute of Technology

2007-08 Visiting Scholar University of Washington, Seattle

Courses Taught

151 Concepts of Chemistry 335 Inorganic and Organometallic Chemistry

153 Concepts of Chemistry - Advanced Section 332 Chemistry and Physics of Materials

155 Current Topics in Chemistry 336 Chemistry of Materials

256 Foundations of Physical and Inorganic Chemistry 364 Instrumental Methods of Analysis

Research Activities

My lab's research is in the area of inorganic and organic materials chemistry and nanotechnology, with a particular interest in self-assembling systems and device applications. One area of investigation has involved the preparation of liquid crystalline compounds (both organic and inorganic) which self-assemble into electrically anisotropic structures. Our approach enables us to tune a number of specific characteristics of these one-dimensional materials, such as temperature range for self-assembly and the strength of intermolecular interactions by means of molecular design and synthesis.

More recently, we have become involved in aspects of self-assembly that have applications in the development of organic solar cells. We are interested in patterning surfaces via methods such as microcontact printing, DPN, and nanosphere lithography, as well as designing novel self-ordering donor and acceptor materials that can be used in photovoltaic devices.

Students in my lab are involved in the synthesis and characterization of both organic and inorganic compounds, as well as both small molecule and macromolecular systems. Students also have the opportunity to gain experience in the characterization of chemically patterned surfaces and the assessment of performance of organic-based solar cells.

Most of our work is carried out at Williams; for techniques that are currently unavailable at Williams, we make use of collaborative relationships at various other institutions, such as RPI and MIT.

Our research has been funded by NSF-RUI, ACS-PRF, and through our on-going collaboartaion with the NSEC program at RPI.

Some Images from our Research

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Optical textures exhibited by donor-acceptor stablized columnar liquid crystals. These samples are composed of 1:1 mixtures of hexaalkoxytriphenylene with trialkyltriimides. The two compounds form alternating columnar stacks which exhibit mesophase behavior over broad temperature ranges.

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Lateral Force AFM image of DPN'ed image (MHA on Au) of Williams

(Scan size ~15 x 25 microns)

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Fluorescence Images of MDMO-PPV:PCBM films cast onto surfaces patterned with various surface chemistries. Fluorescence is due to aggregation of PCBM in different regions of the films, as dictated by the surface chemistry. The patterns formed by the PCBM fluorescence indicate a fine structure within the film smaller than the length scale of the underlying surface pattern.

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Selected Publications

“Controlling Film Morphology in Conjugated Polymer:Fullerene Blends with Surface Patterning” L. Y. Park, A. M. Munro, D. S. Ginger, accepted for publication, J. Am Chem. Soc. 2008.

"Complementary C3-Symmetric Donor-Acceptor Components: Co-Crystal Structure and Control of Mesophase Stability," Park, L. Y., Hamilton, D. G., McGehee, E. A., McMenimen, K. A. J. Am. Chem. Soc. 2003, 125, 10586-10590

"Models of Coenzyme B12; an Undergraduate Chemistry Experiment Combining Synthesis of Cob(III)aloxime Complexes and Their Characterization by 1H NMR and Cyclic Voltammetry," Schofield, M. H., Park, L. Y., Scroggins, S. T., Landis, E. C. Chem. Educator 2003, 8, 248-250.

"Science for Kids Outreach Programs: College Students Teaching Science to Elementary School Students and Their Parents," Koehler, B., Park, L.Y., Kaplan, L.J., J. Chem. Ed. 1999, 76, 1505

"Mesomorphic Properties of a Metallomesogen Based Copper (II) Metal-chain Structures," Park, L.Y., Rowe, J.M.,Chem. Mater. 1998, 10, 1069.

"Synthesis of Five- and Six-Coordinate Alkylidene Complexes of the Type Mo(CHR)(NAr)[OCMe(CF₃)₂]₂ and Their Use as Living ROMP Initiators or Wittig Reagents." Fox, H., Lee, J.-K., Park, L.Y., Schrock, R.R. Organometallics, 1993, 12, 759.

"Stable Polarons in Polyacetylene Oligomers: Optical Spectra of Long Polyene Radical Cations." Bally, T., Roth, K. Tang, W., Schrock, R.R., Knoll, K., Park, L.Y. J. Am. Chem. Soc. 1992, 114, 2440.

"Effect of Chain Length on the Conductivity of Polyacetylene. Potential Dependence of the Conductivity of a Series of Polyenes Prepared by a Living Polymerization Method." Park, L.Y. Ofer, D., Gardner, T.J., Schrock, R.R., Wrighton, M.S. Chem. Mater. 1992, 4, 1388.

"Preparation of tert-Butyl Capped Polyenes Using a Well Defined Molybdenum Alkylidene Catalyst." Park, L.Y., Stieglitz, S.G., Schrock, R.R., Crowe, W.E. Macromolecules 1991, 24(12), 3489.

"Potential Dependence of the Conductivity of Polyacetylene; Finite Potential Windows of High Conductivity." Ofer, D., Park, L.Y., Schrock, R.R., Wrighton, M.S. Chem. Mater. 1991, 3, 573.

Current Research Students (Summer, Thesis, Winter Study)

Leah Shoer ('09)

Former Research (Thesis) Students - Current Positions (as up to date as possible)

Rachel Selinsky ('06) U. Wisconsin Noah Bell ('05), UC Berkeley

Beth Landis ('05), U. Wisconsin Steven Scroggins ('04), UC Berkeley

Laurel Hensley ('03), Medical School Susan Fulmer ('02) - University of Rochester Medical School

Carrie Jones ('02) - MIT Mark Walrod ('01) - University of Albany Medical School

Michelle Dunn ('00) - University of Virginia Medical School Geoff Hutchison ('99) - Faculty, University of Pittsburgh

Jim Rowe ('98) - Marymount School, NY Nick Zammuto ('99) - Musician, North Adams, MA

Thomas Reid ('97) - University of Rochester Medical School Susan Gillmor ('96) - Faculty, George Washingotn University

Amy Prieto ('96) - Faculty, Colorado State University Mark Cordes ('95) - Anesthesiologist, Swedish Medical Center, Seattle, WA

Jebrell Glover ('95) - Faculty, Lehigh University Jonathan Nitschke ('95) - Faculty Cambridge University

Jon Wongsurawat ('94) - Senior Fellow, Dept. of Gasteroenterology, University of Washington

Williams Chemistry

Lee Y. Park

Professor of Chemistry
102 Thompson Chemistry Lab Department of Chemistry Williams College Williamstown, MA 01267 Lab: Morley Science Lab 148 phone: 413-597-2191 email: lee.y.park@williams.edu
At Williams College since 1993

1986	BA, Chemistry	Wellesley College
1991	PhD, Inorganic Chemistry	Massachusetts Institute of Technology

1991-93	Postdoctoral Researcher	IBM Thomas J. Watson Research Center
1997	Visiting Scientist	University of Michigan, Ann Arbor
1997- 01	Visiting Scientist	Massachusetts Institute of Technology
2007-08	Visiting Scholar	University of Washington, Seattle

151	Concepts of Chemistry	335	Inorganic and Organometallic Chemistry
153	Concepts of Chemistry - Advanced Section	332	Chemistry and Physics of Materials
155	Current Topics in Chemistry	336	Chemistry of Materials
256	Foundations of Physical and Inorganic Chemistry	364	Instrumental Methods of Analysis


“Controlling Film Morphology in Conjugated Polymer:Fullerene Blends with Surface Patterning” L. Y. Park, A. M. Munro, D. S. Ginger, accepted for publication, J. Am Chem. Soc. 2008.
"Complementary C3-Symmetric Donor-Acceptor Components: Co-Crystal Structure and Control of Mesophase Stability," Park, L. Y., Hamilton, D. G., McGehee, E. A., McMenimen, K. A. J. Am. Chem. Soc. 2003, 125, 10586-10590
"Models of Coenzyme B12; an Undergraduate Chemistry Experiment Combining Synthesis of Cob(III)aloxime Complexes and Their Characterization by 1H NMR and Cyclic Voltammetry," Schofield, M. H., Park, L. Y., Scroggins, S. T., Landis, E. C. Chem. Educator 2003, 8, 248-250.
"Science for Kids Outreach Programs: College Students Teaching Science to Elementary School Students and Their Parents," Koehler, B., Park, L.Y., Kaplan, L.J., J. Chem. Ed. 1999, 76, 1505
"Mesomorphic Properties of a Metallomesogen Based Copper (II) Metal-chain Structures," Park, L.Y., Rowe, J.M.,Chem. Mater. 1998, 10, 1069.
"Synthesis of Five- and Six-Coordinate Alkylidene Complexes of the Type Mo(CHR)(NAr)[OCMe(CF₃)₂]₂ and Their Use as Living ROMP Initiators or Wittig Reagents." Fox, H., Lee, J.-K., Park, L.Y., Schrock, R.R. Organometallics, 1993, 12, 759.
"Stable Polarons in Polyacetylene Oligomers: Optical Spectra of Long Polyene Radical Cations." Bally, T., Roth, K. Tang, W., Schrock, R.R., Knoll, K., Park, L.Y. J. Am. Chem. Soc. 1992, 114, 2440.
"Effect of Chain Length on the Conductivity of Polyacetylene. Potential Dependence of the Conductivity of a Series of Polyenes Prepared by a Living Polymerization Method." Park, L.Y. Ofer, D., Gardner, T.J., Schrock, R.R., Wrighton, M.S. Chem. Mater. 1992, 4, 1388.
"Preparation of tert-Butyl Capped Polyenes Using a Well Defined Molybdenum Alkylidene Catalyst." Park, L.Y., Stieglitz, S.G., Schrock, R.R., Crowe, W.E. Macromolecules 1991, 24(12), 3489.
"Potential Dependence of the Conductivity of Polyacetylene; Finite Potential Windows of High Conductivity." Ofer, D., Park, L.Y., Schrock, R.R., Wrighton, M.S. Chem. Mater. 1991, 3, 573.

Rachel Selinsky ('06) U. Wisconsin	Noah Bell ('05), UC Berkeley
Beth Landis ('05), U. Wisconsin	Steven Scroggins ('04), UC Berkeley
Laurel Hensley ('03), Medical School	Susan Fulmer ('02) - University of Rochester Medical School
Carrie Jones ('02) - MIT	Mark Walrod ('01) - University of Albany Medical School
Michelle Dunn ('00) - University of Virginia Medical School	Geoff Hutchison ('99) - Faculty, University of Pittsburgh
Jim Rowe ('98) - Marymount School, NY	Nick Zammuto ('99) - Musician, North Adams, MA
Thomas Reid ('97) - University of Rochester Medical School	Susan Gillmor ('96) - Faculty, George Washingotn University
Amy Prieto ('96) - Faculty, Colorado State University	Mark Cordes ('95) - Anesthesiologist, Swedish Medical Center, Seattle, WA
Jebrell Glover ('95) - Faculty, Lehigh University	Jonathan Nitschke ('95) - Faculty Cambridge University
Jon Wongsurawat ('94) - Senior Fellow, Dept. of Gasteroenterology, University of Washington