Dr. Joshua Pak
Department Chair and Professor
Office: Physical Science Complex 145B
Ph.D. Organic Chemistry, University of Oregon – 1999
Research area: Organic, Organometallic, Materials and Polymer Chemistry
Student experience required for research: First, second and third year chemistry majors or Enrolled in General Chemistry or Organic Chemistry
Student experience gained from research: Organic and organometallic synthetic techniques, NMR, air-sensitive techniques, computational chemistry, mass spectrometry
Ideal preparation for: Polymers, materials, pharmaceuticals, medical research, preparation for graduate school in chemistry and for professional school such as medical, dental and pharmacy schools.
Research in Pak Lab consists of synthesis and study of “non-natural” nano- to meso-scale materials. We utilize modern synthetic methods for the preparation of novel inorganic, organic, organometallic, and organic-inorganic hybrid materials with technologically important properties such as (semi-)conductivity and nonlinear optical (NLO) activities. In addition to preparation of organic, organometallic, and inorganic materials, we collaborate with various research groups here at ISU and around the world in analysis, device construction, and device testing. For detailed information on Dr. Pak’s research project, visit Dr. Pak's Webpage.
"Fabrication and Characterization of Thin Film Solar Cell Made From CuIn0.75Ga0.25S2 Wurtzite Nanoparticles" Fengyan Zhang, Chivin Sun, Cyril Bajracharya, René G. Rodriguez, Joshua J. Pak, Journal of Nanomaterials, 2013, Article ID 320375, 5 pages, 2013. doi:10.1155/2013/320375.
"A Large-Scale Synthesis and Characterization of Quaternary CuInxGa1-xS2 Chalcopyrite Nanoparticles via Microwave Batch Reactions" Chivin Sun, Richard D. Westover, Gary Long, Cyril Bajracharya, Jerry Harris, Alex Punnoose, René G. Rodriguez, and Joshua J. Pak*, Int. J. Chem. Eng. 2011, Article ID 545234.
“Divergent Syntheses of Cu-In Bimetallic Single Source Precursors via Thiolate Ligand Exchange” Chivin Sun, Richard D. Westover, Kelsey R. Margulieux, Lev N. Zakharov, Andrew W. Holland*, Joshua J. Pak*, Inorganic Chemistry,2010, 4756–4758.
“Controlled Stoichiometry for Quaternary CuInxG1-xS2 Chalopyrite Nanoparticles from Single Source Precursors via Microwave Irradiation” Chivin Sun, Joseph S. Gardner, Gary Long, Cyril Bajracharya, Aaron Thurber, Alex Punnoose, Rene G. Rodriguez*, and Joshua J. Pak*, Chem. Mat. 2010, 2699-2701.
“Step-Wise Introduction of Thiolates in Copper Indium Binuclear Complexes” Kelsey R. Margulieux, Chivin Sun, Lev N. Zakharov, Andrew W. Holland*, Joshua J. Pak*, Inorganic Chemistry, 2010, 49(9), 3959-3961.
“A high yield synthesis of chalcopyrite CuInS2 nanoparticles with exceptional size control” Chivin Sun, Joseph S. Gardner, Endrit Shurdha, Kelsey R. Margulieux, Richard D. Westover, Lisa Lau, Gary Long, Cyril Bajracharya, Chongmin Wang, Aaron Thurber, Alex Punnoose, Rene G. Rodriguez*, and Joshua J. Pak*, J. Nanomat. 2009, 748567.
“Extraction of Technetium as [Tc(II)(NO)(AHA)2H2O]+ Species in the UREX Process” Patricia Paviet-Hartmann*, Ana Nunez Gomez-Aleixandre, Joshua Pak, Amparo Glez Espartero, Frederic Poineau, Amber Wright, Edward Mausolf, and Kenneth R. Czerwinski, Proceedings of the 17th International Conference on Nuclear Engineering, 2009, ICONE 17- 75509.
"Rapid and Size Control Synthesis of CuInS2 Nanoparticles via Microwave Irradiation." Gardner, J.S.; Shurdha, E.; Lau, L.D.; Wang, C.: Rodriguez, R.G.; Pak, J. J. Nanoparticle Research, 10(4), 633-641, 2008.
"Pulsed-Spray Radiofrequency PECVD of CuInS2 Thin Films," R.G. Rodriguez, D.J.V. Pulsipher, L.D. Lau, E. Shurdha, J.J. Pak, M.H. Jin, K.K. Banger, A.F. Hepp, Plasma Chemistry and Plasma Processing 26(2), 137-148, 2006.
"Facile synthesis of 4,4',5,5'-tetraiododibenzo-24-crown-8 and its highly conjugated derivatives," E. Shurdha, J.L. Mayo, and J.J. Pak, Tetrahedron Letters 47, 233-237, 2006.
"Synthesis and crystallographic characterization of a 'palladadehydrobenzoannulene'," J.J. Pak, O.S. Darwish, T.J.R. Weakley, M.M. Haley, J. Organomet. Chem., 683 (2), 430-434, 2003.
"Diastereoselective Self-Assembly of a Pentacoordinate Siliconate Tetraanionic Molecular Square. A Mechanistic Investigation," J.J. Pak, J. Greaves, D.J. McCord, K.J. Shea, Organometallics, 21, 3552-3561, 2002.
"Synthesis and Characterization of Annulene-Fused Pseudorotaxanes," J.J. Pak, T.J.R. Weakley, M.M. Haley, D.Y.K. Lee, J.F. Stoddart, Synthesis, 1256-1260, 2002.
"Nonlinear Optical Properties of Dehydrobenzoannulenes: Expanded Two-Dimensional Dipolar and Octupolar NLO Chromophores," A. Sarkar, J.J. Pak, G.W. Rayfield, M.M. Haley, J. Mater. Chem., 11, 2943-2945, 2001.
"Carbon Networks Based on Dehydrobenzoannulenes: Part 2 Synthesis of Expanded Graphdiyne Substructures," W.B. Wan, S.C. Brand, J.J. Pak, M.M. Haley, Chem. Eur. J., 6, 2044-2052, 2000.
"Stepwise Assembly of Site-specifically Functionalized Dehydrobenzoannulenes," J.J. Pak, T.J.R. Weakley, M.M. Haley, J. Am. Chem. Soc., 121, 8182-8192, 1999.
"Macrocyclic Oligo(phenylacetylenes) and Oligo(phenyldiacetylenes)," M.M. Haley, J.J. Pak, S.C. Brand, Topics in Current Chemistry (Carbon-Rich Compounds II), 201, Armin de Meijere (Ed.), Springer-Verlag: Berlin, 1999, 81-130.
"One-Pot Desilylation/Dimerization of Ethynyl- and Butadiynyltrimethylsilanes. Synthesis of Tetrayne-Linked Dehydrobenzoannulenes," M.M. Haley, M.L. Bell, S.C. Brand, D.B. Kimball, J.J. Pak, W.B. Wan, Tetrahedron Lett., 38, 7483-7486, 1997.
"Synthesis and Crystallographic Characterization of a Platinadehydrobenzoannulene," J.J. Pak, T.J.R. Weakley, M.M. Haley, Organometallics, 16, 4505-4507, 1997.
"Carbon Networks Based on Dehydrobenzoannulenes: Preparation of Substructures of Graphdiyne," M.M. Haley, S.C. Brand, J.J. Pak, Angew. Chem., Int. Ed. Engl., 36, 836-838, 1997.
"α,β-Unsaturated Nitriles: An Effective Conjugate Addition with Potassium Phenyl Selenolate and Potassium Phenyl Sulfenylate," F.F. Fleming, J.J. Pak, J. Org. Chem., 60, 4299-4301, 1995.