Dr. Phillip Koech

Chemist

Biography

Dr. Phillip Koech received a B.Ed. (Science) from Kenyatta University, Nairobi, Kenya, M.S. from Central Michigan University and Ph.D. from The University of Texas at Austin. He joined PNNL in 2007, where he has been working on the design, synthesis, and characterization of organic molecules for CO₂ capture and other applications.

Education

Ph.D., Organic Chemistry, University of Texas at Austin, 2007
M.S., Organic Chemistry, Central Michigan University, 2002
B.Ed. (Science), Kenyatta University, Nairobi, Kenya, 1999

Affiliations and Professional Service

American Chemical Society
National Organization for the Professional Advancement of Black Chemists and Chemical Engineers
Sigma Xi

Awards and Recognitions

Welch Summer Research Fellowship, University of Texas at Austin, 2005
Dean's Excellence Award, University of Texas at Austin, 2002
Graduate Student Research Grant, Central Michigan University, 2001
Dean's List Tuition Award, Kenyatta University, 1997

Patents

U.S. Patent No. 11,266,947, March 8, 2022, "DIAMINE SOLVENT SYSTEM FOR CO2 CAPTURE".
U.S. Patent No. 10,875,810, December 29, 2020, "SELF-REPAIRING CEMENT POLYMER COMPOSITES AND PROCESSES OF MAKING AND USING SAME ".
U.S. Patent No. 10,773,205, September 15, 2020, "CAPTURE AND RELEASE OF ACID GASSES USING TUNABLE ORGANIC SOLVENTS WITH AMINOPYRIDINE ".
U.S. Patent No. 10,722,837, July 28, 2020, "CAPTURE AND RELEASE OF ACID GASSES USING TUNABLE ORGANIC SOLVENTS WITH AMINOPYRIDINE ".
U.S. Patent No. 10,456,739, October 29, 2019, " CAPTURE AND RELEASE OF ACID GASSES USING TUNABLE ORGANIC SOLVENTS WITH BINDING ORGANIC LIQUIDS ".
U.S. Patent No. 10,434,460, October 8, 2019, "CAPTURE AND RELEASE OF ACID GASSES USING TUNABLE ORGANIC SOLVENTS WITH AMINOPYRIDINE ".
U.S. Patent No. 10,370,577, August 6, 2019, " SELF-REPAIRING CEMENT POLYMER COMPOSITES AND PROCESSES OF MAKING AND USING SAME ".
U.S. Patent No. 10,130,907, November 20, 2018, "CAPTURE AND RELEASE OF ACID GASSES USING TUNABLE ORGANIC SOLVENTS WITH AMINOPYRIDINE ".
U.S. Patent No. 9,707,508, July 18, 2017, "System and Process for Polarity Swing Assisted Regeneration of Gas-Selective Capture Liquids".
U.S. Patent No. 9,499,880, November 22, 2016, "SYSTEM AND PROCESS FOR PRODUCTION OF MAGNESIUM METAL AND MAGNESIUM HYDRIDE FROM MAGNESIUM-CONTAINING SALTS AND BRINES (iEdison No. 0685901-13-0017)".
U.S. Patent No. 9,433,892, September 6, 2016, "SYSTEM AND PROCESS FOR CAPTURE OF ACID GASSES AT ELEVATED PRESSURE FROM GASEOUS PROCESS STREAMS".
U.S. Patent No. 8,980,210, March 17, 2015, "Capture and Release of Acid-Gasses with Acid-Gas Binding Organic Compounds".
U.S. Patent No. 8,652,237, February 18, 2014, "System and process for capture of H2S from gaseous process streams and process for regeneration of the capture agent ".

Publications

2022

Barpaga D., Y. Jiang, R.F. Zheng, D. Malhotra, P.K. Koech, A. Zwoster, and P.M. Mathias, et al. 2022. "Evaluation of a third Generation Single-Component Water-Lean Diamine Solvent for Post-Combustion CO2 Capture." ACS Sustainable Chemistry & Engineering 10, no. 14:4522-4528. PNNL-SA-168249. doi:10.1021/acssuschemeng.1c08401

2021

Nguyen M., K. Grubel, D. Zhang, P.K. Koech, D. Malhotra, S.I. Allec, and R.J. Rousseau, et al. 2021. "Amphiphilic Water-Lean Carbon Capture Solvent Wetting Behavior through Decomposition by Stainless-Steel Interfaces." ChemSusChem 14, no. 23:5283-5292. PNNL-SA-163590. doi:10.1002/cssc.202101350

2020

Cantu Cantu D., D. Malhotra, M. Nguyen, P.K. Koech, D. Zhang, V. Glezakou, and R.J. Rousseau, et al. 2020. "Molecular-Level Overhaul of y-Aminopropyl Aminosilicone/Triethylene Glycol Post-Combustion CO2-Capture Solvents." ChemSusChem 13, no. 13:3429-3438. PNNL-SA-152126. doi:10.1002/cssc.202000724
Rod K.A., C.A. Fernandez, M. Nguyen, J.B. Gardiner, N.J. Huerta, V. Glezakou, and T. Varga, et al. 2020. "Polymer-cement composites with adhesion and re-adhesion (healing) to casing capability for geothermal wellbore applications." Cement and Concrete Composites 107. PNNL-SA-140589. doi:10.1016/j.cemconcomp.2019.103490
Rod K.A., C.A. Fernandez, P.K. Koech, G.L. Dai, M. Correa, N.J. Huerta, and S.D. Burton, et al. 2020. "Self-Repairing Polymer-Modified Cements for High Temperature Geothermal and Fossil Energy Applications." Geothermics 85. PNNL-SA-140314. doi:10.1016/j.geothermics.2019.101790
Zheng R.F., D. Barpaga, P.M. Mathias, D. Malhotra, P.K. Koech, Y. Jiang, and M. Bhakta, et al. 2020. "A Single-Component Water-Lean Post-Combustion CO2 Capture Solvent with Exceptionally Low Operational Heat and Total Costs of Capture - Comprehensive Experimental and Theoretical Evaluation." Energy & Environmental Science 13, no. 11:4106-4113. PNNL-SA-153508. doi:10.1039/D0EE02585B

2019

Malhotra D., D. Cantu Cantu, P.K. Koech, D.J. Heldebrant, A.J. Karkamkar, F. Zheng, and M.D. Bearden, et al. 2019. "Directed Hydrogen Bond Placement: Low Viscosity Amine Solvents for CO2 Capture." ACS Sustainable Chemistry & Engineering 7, no. 8:7535-7542. PNNL-SA-139613. doi:10.1021/acssuschemeng.8b05481
Polikarpov E., C.A. Fernandez, G.W. Coffey, S.K. Nune, A.J. Karkamkar, B.J. Garcia, and T.L. Lemmon, et al. 2019. "Toward Polarization-Switched Molecular Pumps." ACS Applied Energy Materials 2, no. 6:4092-4097. PNNL-SA-138089. doi:10.1021/acsaem.9b00252
Polikarpov E., K.O. Albrecht, J.P. Page, D. Malhotra, P.K. Koech, L. Cosimbescu, and D.J. Gaspar. 2019. "Critical Fuel Property Evaluation for Potential Gasoline and Diesel Biofuel Blendstocks with Low Sample Volume Availability." Fuel 238. PNNL-SA-134684. doi:10.1016/j.fuel.2018.09.129
Rod K.A., M. Nguyen, M. Elbakhshwan, S. Gill, B. Kutchko, T. Varga, and A.L. McKinney, et al. 2019. "Insights into the physical and chemical properties of a cement-polymer composite developed for geothermal wellbore applications." Cement and Concrete Composites 97. PNNL-SA-131466. doi:10.1016/j.cemconcomp.2018.12.022

2018

Fernandez C.A., K.A. Rod, N.J. Huerta, and P.K. Koech. 2018. "Advanced Polymer-Modified Cements for Subsurface Applications." In Proceedings of the 43rd Workshop on Geothermal Reservoir Engineering, February 12-14, 2018, Stanford, CA, SGP-TR-213, 1-8. Stanford, California:Stanford University. PNNL-SA-132427.
Liu J., M.D. Bearden, C.A. Fernandez, L.S. Fifield, S.K. Nune, R.K. Motkuri, and P.K. Koech, et al. 2018. "Techno-economic analysis of magnesium extraction from seawater via a catalyzed organo-metathetical process." JOM. The Journal of the Minerals, Metals and Materials Society 70, no. 3:431-435. PNNL-SA-119113. doi:10.1007/s11837-017-2735-6
Nguyen M., Z. Wang, K.A. Rod, M.I. Childers, C.A. Fernandez, P.K. Koech, and W.D. Bennett, et al. 2018. "Atomic origins of the self-healing function in cement-polymer composites." ACS Applied Materials & Interfaces 10, no. 3:3011-3019. PNNL-SA-130887. doi:10.1021/acsami.7b13309

2017

Cantu Cantu D., D. Malhotra, P.K. Koech, D.J. Heldebrant, F. Zheng, C.J. Freeman, and R.J. Rousseau, et al. 2017. "Integrated Solvent Design for CO2 Capture and Viscosity Tuning." Energy Procedia 114. PNNL-SA-121494. doi:10.1016/j.egypro.2017.03.1215
Childers M.I., M. Nguyen, K.A. Rod, P.K. Koech, W. Um, J. Chun, and V. Glezakou, et al. 2017. "Polymer-Cement Composites with Self-Healing Ability for Geothermal and Fossil Energy Applications." Chemistry of Materials 29, no. 11:4708-4718. PNNL-SA-127162. doi:10.1021/acs.chemmater.7b00344
Heldebrant D.J., P.K. Koech, R.J. Rousseau, V. Glezakou, D. Cantu Cantu, D. Malhotra, and F. Zheng, et al. 2017. "Are Water-Lean Solvent Systems Viable for Post-Combustion CO2 Capture?." Energy Procedia 114. PNNL-SA-121489. doi:10.1016/j.egypro.2017.03.1218
Heldebrant D.J., P.K. Koech, V. Glezakou, R.J. Rousseau, D. Malhotra, and D. Cantu Cantu. 2017. "Water-Lean Solvents for Post-Combustion CO2 Capture: Fundamentals, Uncertainties, Opportunities and Outlook." Chemical Reviews 117, no. 14:9594-9624. PNNL-SA-122499. doi:10.1021/acs.chemrev.6b00768
Malhotra D., J.P. Page, M.E. Bowden, A.J. Karkamkar, D.J. Heldebrant, V. Glezakou, and R.J. Rousseau, et al. 2017. "Phase-Change Aminopyridines as Carbon Dioxide Capture Solvents." Industrial and Engineering Chemistry Research 56, no. 26:7534-7540. PNNL-SA-124645. doi:10.1021/acs.iecr.7b00874
Malhotra D., P.K. Koech, D.J. Heldebrant, D. Cantu Cantu, F. Zheng, V. Glezakou, and R.J. Rousseau. 2017. "Reinventing design principles for developing low-viscosity carbon dioxide-binding organic liquids for flue gas clean up." ChemSusChem 10, no. 3:636-642. PNNL-SA-121959. doi:10.1002/cssc.201601622
Zheng J., V.S. Vemuri, L. Estevez, P.K. Koech, T. Varga, D.M. Camaioni, and T.A. Blake, et al. 2017. "Pore-Engineered Metal-Organic Frameworks with Excellent Adsorption of Water and Fluorocarbon Refrigerant for Cooling Applications." Journal of the American Chemical Society 139, no. 31:10601-10604. PNNL-SA-124980. doi:10.1021/jacs.7b04872

2016

Anderson L.N., P.K. Koech, A.E. Plymale, E.V. Landorf, A. Konopka, F. Collart, and M.S. Lipton, et al. 2016. "Live Cell Discovery of Microbial Vitamin Transport and Enzyme-Cofactor Interactions." ACS Chemical Biology 11, no. 2:345-354. PNNL-SA-108145. doi:10.1021/acschembio.5b00918
Cantu Cantu D., D. Malhotra, P.K. Koech, D.J. Heldebrant, F. Zheng, C.J. Freeman, and R.J. Rousseau, et al. 2016. "Structure-Property Reduced Order Model for Viscosity Prediction in Single-Component CO2- Binding Organic Liquids." Green Chemistry 18, no. 22:10.1039/C6GC02203K. PNNL-SA-119405. doi:10.1039/c6gc02203k
Cantu Cantu D., J. Lee, M. Lee, D.J. Heldebrant, P.K. Koech, C.J. Freeman, and R.J. Rousseau, et al. 2016. "Dynamic Acid/Base Equilibrium in Single Component Switchable Ionic Liquids and Consequences on Viscosity." The Journal of Physical Chemistry Letters 7, no. 9:1646-1652. PNNL-SA-114453. doi:10.1021/acs.jpclett.6b00395
Heldebrant D.J., P.K. Koech, R.J. Rousseau, and V.A. Glezakou. 2016. Accelerating the Development of “Transformational” Solvents for CO2 Separations, Quarterly Progress Report, Budget Period 1, Q3, 2014. PNNL-24285. Richland, WA: Pacific Northwest National Laboratory. Accelerating the Development of “Transformational” Solvents for CO2 Separations, Quarterly Progress Report, Budget Period 1, Q3, 2014
Heldebrant D.J., P.K. Koech, R.J. Rousseau, and V.A. Glezakou. 2016. Accelerating the Development of “Transformational” Solvents for CO2 Separations, Quarterly Progress Report, Budget Period 2, Q5, 2015. PNNL-24860. Richland, WA: Pacific Northwest National Laboratory. Accelerating the Development of “Transformational” Solvents for CO2 Separations, Quarterly Progress Report, Budget Period 2, Q5, 2015
Heldebrant D.J., P.K. Koech, R.J. Rousseau, and V.A. Glezakou. 2016. Accelerating the Development of “Transformational” Solvents for CO2 Separations. PNNL-24032. Richland, WA: Pacific Northwest National Laboratory. Accelerating the Development of “Transformational” Solvents for CO2 Separations
Zheng F., D.J. Heldebrant, P.M. Mathias, P.K. Koech, M. Bhakta, C.J. Freeman, and M.D. Bearden, et al. 2016. "Bench-Scale Testing and Process Performance Projections of CO2 Capture by CO2-Binding Organic Liquids (CO2BOLs) With and Without Polarity-Swing-Assisted Regeneration." Energy and Fuels 30, no. 2:1192-1203. PNNL-SA-113072. doi:10.1021/acs.energyfuels.5b02437

2015

Koech P.K., D. Malhotra, D.J. Heldebrant, D. Cantu Cantu, V.A. Glezakou, and R.J. Rousseau. 2015. "Synthesis and characterization of low viscosity carbon dioxide binding organic liquids for flue gas clean up." In Energy & Fuels Preprints Presented at the 249th ACS National Meeting & Exposition, March 22-26, 2015, Denver, Colorado, 60, 628-630. Washington, District Of Columbia:American Chemical Society. PNNL-SA-106437.
Mathias P.M., F. Zheng, D.J. Heldebrant, A. Zwoster, G.A. Whyatt, C.J. Freeman, and M.D. Bearden, et al. 2015. "Measuring the Absorption Rate of CO2 in Nonaqueous CO2-Binding Organic Liquid Solvents with a Wetted-Wall Apparatus." ChemSusChem 8, no. 21:3617-3625. PNNL-SA-107295. doi:10.1002/cssc.201500288

2014

Heldebrant D.J., V.A. Glezakou, P.K. Koech, P.M. Mathias, D. Cantu Cantu, R.J. Rousseau, and D. Malhotra, et al. 2014. "Evaluating transformational solvent systems for post-combustion CO2 separations." Energy Procedia 63. PNNL-SA-115535. doi:10.1016/j.egypro.2015.12.336

2013

Koech P.K., J. Zhang, I.V. Kutnyakov, L. Cosimbescu, S. Lee, M.E. Bowden, and T.D. Smurthwaite, et al. 2013. "Low viscosity alkanolguanidine and alkanolamidine liquids for CO2 capture." RSC Advances 3, no. 2:556 - 572. PNWD-SA-10043. doi:10.1039/C2RA22801G
Mathias P.M., K. Afshar, F. Zheng, M.D. Bearden, C.J. Freeman, T. Andrea, and P.K. Koech, et al. 2013. "Improving the Regeneration of CO2-Binding Organic Liquids with a Polarity Change." Energy and Environmental Science 6, no. 7:2233-2242. PNNL-SA-94359. doi:10.1039/C3EE41016A
Mathias P.M., L.V. Jasperson, D. VonNiederhausern, M.D. Bearden, P.K. Koech, C.J. Freeman, and D.J. Heldebrant. 2013. "Assessing Anhydrous Tertiary Alkanolamines for High-Pressure Gas Purifications." Industrial and Engineering Chemistry Research 52, no. 49:17562-17572. PNWD-SA-10164. doi:10.1021/ie4020974
Rainbolt J.E., P.K. Koech, E. Polikarpov, J.S. Swensen, L. Cosimbescu, A.L. Von Ruden, and L. Wang, et al. 2013. "Synthesis and characterization of p-type conductivity dopant 2-(3-(adamantan-1-yl)propyl)-3,5,6-trifluoro-7,7,8,8-tetracyanoquinodimethane." Journal of Materials Chemistry C 1, no. 9:1876 - 1884. PNNL-SA-77092. doi:10.1039/C3TC00068K
Swensen J.S., L. Wang, L. Wang, E. Polikarpov, J.E. Rainbolt, P.K. Koech, and L. Cosimbescu, et al. 2013. "Near independence of OLED operating voltage on transport layer thickness." Synthetic Metals 163. PNNL-SA-86614. doi:10.1016/j.synthmet.2012.12.015
Zhang J., I.V. Kutnyakov, P.K. Koech, A. Zwoster, C.J. Howard, F. Zheng, and C.J. Freeman, et al. 2013. "CO2-Binding-Organic-Liquids-Enhanced CO2 Capture using Polarity-Swing-Assisted Regeneration." Energy Procedia 37. PNNL-SA-91349. doi:10.1016/j.egypro.2013.05.113
Zheng J., M. Gu, C.M. Wang, P. Zuo, P.K. Koech, J. Zhang, and J. Liu, et al. 2013. "Controlled Nucleation and Growth Process of Li2S2/Li2S in Lithium-Sulfur Batteries." Journal of the Electrochemical Society 160, no. 11:A1992-A1996. PNNL-SA-94263. doi:10.1149/2.032311jes

2012

Chauvigne-Hines L.M., L.N. Anderson, H.M. Weaver, J.N. Brown, P.K. Koech, C.D. Nicora, and B.A. Hofstad, et al. 2012. "Suite of Activity-Based Probes for Cellulose-Degrading Enzymes." Journal of the American Chemical Society 134, no. 50:20521-20532. PNNL-SA-91066. doi:10.1021/ja309790w
Swensen J.S., L. Wang, L. Wang, J.E. Rainbolt, P.K. Koech, E. Polikarpov, and D.J. Gaspar, et al. 2012. "Characterization of solution processed, p-doped films using hole-only devices and organic field-effect transistors." Organic Electronics 13, no. 12:3085-3090. PNNL-SA-82955. doi:10.1016/j.orgel.2012.07.045
Xu W., A.L. Read, P.K. Koech, D. Hu, C.M. Wang, J. Xiao, and A.B. Padmaperuma, et al. 2012. "Factors Affecting the Battery Performance of Anthraquinone-based Organic Cathode Materials." Journal of Materials Chemistry 22, no. 9:4032-4039. PNNL-SA-83987. doi:10.1039/c2jm15764k

2011

Heldebrant D.J., P.K. Koech, J.E. Rainbolt, and F. Zheng. 2011. "CO2-Binding Organic Liquids, an Integrated Acid Gas Capture System." Energy Procedia 4. PNNL-SA-74727. doi:10.1016/j.egypro.2011.01.044
Heldebrant D.J., P.K. Koech, J.E. Rainbolt, F. Zheng, T.D. Smurthwaite, C.J. Freeman, and M. Oss, et al. 2011. "Performance of Single-Component CO2-Binding Organic Liquids (CO2BOLs) For Post Combustion CO2 Capture." Chemical Engineering Journal 171, no. 3:794-800. PNNL-SA-73185. doi:10.1016/j.cej.2011.02.012
Koech P.K., D.J. Heldebrant, S. Lee, J.E. Rainbolt, and T.D. Smurthwaite. 2011. "Synthesis, characterization and application of alkanolamidines and alkanolguanidines in CO(2) capture." In 241st National Meeting and Exposition of the American Chemical Society, March 27-31, 2011, Anaheim, California, 241, 48-FUEL. Washington, Dc:American Chemical Society. PNNL-SA-76040.
Koech P.K., J.E. Rainbolt, M.D. Bearden, F. Zheng, and D.J. Heldebrant. 2011. "Chemically Selective Gas Sweetening Without Thermal-Swing Regeneration." Energy & Environmental Science 4, no. 4:1385-1390. PNWD-SA-9236. doi:10.1039/c0ee00839g
Polikarpov E., P.K. Koech, L. Wang, J.S. Swensen, L. Cosimbescu, J.E. Rainbolt, and A.L. Von Ruden, et al. 2011. "Controlling charge transport in blue organic light-emitting devices by chemical functionalization of host materials." Journal of Photonics for Energy 1. PNNL-SA-74814. doi:10.1117/1.3528499
Swensen J.S., J.E. Rainbolt, L. Wang, P.K. Koech, E. Polikarpov, A.B. Padmaperuma, and D.J. Gaspar. 2011. "Blue phosphorescent organic light-emitting devices utilizing cesium-carbonate-doped 2,4,6-tris(2',4'-difluoro-[1,1'- biphenyl]-4-yl)-1,3,5-triazine." Journal of Photonics for Energy 1. PNNL-SA-74897. doi:10.1117/1.3528003
Xiao J., X. Wang, X. Yang, S. Xun, G. Liu, P.K. Koech, and J. Liu, et al. 2011. "Electrochemically Induced High Capacity Displacement Reaction of PEO/MoS2/Graphene Nanocomposites with Lithium." Advanced Functional Materials 21, no. 15:2840-2846. PNNL-SA-76336. doi:10.1002/adfm.201002752

2010

Cosimbescu L., P.K. Koech, E. Polikarpov, J.S. Swensen, A.L. Von Ruden, J.E. Rainbolt, and A.B. Padmaperuma. 2010. "Molecular Engineering of Host Materials for Blue Phosphorescent OLEDs: Past, Present and Future." In SID International Symposium Digest of Technical Papers, Papers from the Annual Symposium, May 23-28, 2010, Seattle, Washington, 41, 1887-1889. Campbell, California:Society for Information Display. PNNL-SA-71348. doi:10.1889/1.3500379
Heldebrant D.J., P.K. Koech, and C.R. Yonker. 2010. "A reversible zwitterionic SO2-binding organic liquid." Energy & Environmental Science 3, no. 1:111-113. PNNL-SA-65189. doi:10.1039/B916550A
Heldebrant D.J., P.K. Koech, and C.R. Yonker. 2010. "A reversible zwitterionic SO2-binding organic liquid." Energy & Environmental Science 3, no. 1:111-113. PNNL-SA-65940. doi:10.1039/b916550a
Heldebrant D.J., P.K. Koech, C.R. Yonker, J.E. Rainbolt, and F. Zheng. 2010. "Reversible Acid Gas Capture Using CO2-Binding Organic Liquids." In Preprints of Symposia - American Chemical Society Fuel Chemistry Division, 55, 81-82. Washington Dc:American Chemical Society. PNNL-SA-69452.
Heldebrant D.J., P.K. Koech, J.E. Rainbolt, and F. Zheng. 2010. "Acid Gas Capture Using CO2-Binding Organic Liquids." In Proceedings of the 2010 Annual Meeting of the AIChE, November 7-12, 2010, Salt Lake City, Utah, Paper No. 334d. New York:American Institute of Chemical Engineers. PNNL-SA-65561.
Heldebrant D.J., P.K. Koech, T. Ang, C. Liang, J.E. Rainbolt, C.R. Yonker, and P.G. Jessop. 2010. "Reversible zwitterionic liquids, the reaction of alkanol guanidines, alkanol amidines, and diamines with CO2." Green Chemistry 12, no. 4:713-721. PNNL-SA-69761. doi:10.1039/b924790d
Koech P.K., A.B. Padmaperuma, L. Wang, J.S. Swensen, E. Polikarpov, J.T. Darsell, and J.E. Rainbolt, et al. 2010. "Synthesis and application of 1,3,4,5,7,8-Hexafluorotetracyanonaphtoquinodimethane (F6-TNAP): A Conductivity Dopant for Organic Light-Emitting Devices." Chemistry of Materials 22, no. 13:3926-3932. PNNL-SA-68774.
Koech P.K., D.J. Heldebrant, J.E. Rainbolt, F. Zheng, and T.D. Smurthwaite. 2010. "Synthesis, characterization and performance of single-component CO2-binding organic liquids (CO2BOL) for post combustion CO2 capture." In Preprints of Symposia, American Chemical Society. Division of Fuel Chemistry, August 22-26, 2010, Boston, MA, 55, 553-554. Washington Dc:American Chemical Society. PNNL-SA-71880.
Koech P.K., E. Polikarpov, J.E. Rainbolt, L. Cosimbescu, J.S. Swensen, A.L. Von Ruden, and A.B. Padmaperuma. 2010. "Synthesis and application of pyridine-based ambipolar hosts: control of charge balance in organic light emitting devices (OLEDs) by chemical structure modification." Organic Letters 12, no. 23:5534-5537. PNNL-SA-75168. doi:10.1021/ol102444j
Polikarpov E., J.S. Swensen, L. Cosimbescu, P.K. Koech, J.E. Rainbolt, and A.B. Padmaperuma. 2010. "Emission Zone Control in Blue Organic Electrophosphorescent Devices Through Chemical Modification of Host Materials." Applied Physics Letters 96, no. 5:Art. No. 053306. PNNL-SA-68607. doi:10.1063/1.3298556
Rainbolt J.E., P.K. Koech, C.R. Yonker, F. Zheng, D. Main, M.L. Weaver, and J.C. Linehan, et al. 2010. "Anhydrous Tertiary Alkanolamines as Hybrid Chemical and Physical CO2 Capture Reagents with Pressure-Swing Regeneration." Energy & Environmental Science 4, no. 2:480-484. PNWD-SA-9112. doi:10.1039/C0EE00506A
Von Ruden A.L., L. Cosimbescu, E. Polikarpov, P.K. Koech, J.S. Swensen, L. Wang, and J.T. Darsell, et al. 2010. "Phosphine Oxide Based Electron Transporting and Hole Blocking Materials for Blue Electrophosphorescent Organic Light Emitting Devices." Chemistry of Materials 22, no. 20:5678-5686. PNNL-SA-72786. doi:10.1021/cm1013653
Xiao J., D. Choi, L. Cosimbescu, P.K. Koech, J. Liu, and J.P. Lemmon. 2010. "Exfoliated MoS2 Nanocomposite as an Anode Material for Lithium Ion Batteries." Chemistry of Materials 22, no. 16:4522-4524. PNNL-SA-72496.

2009

Koech P.K., L.S. Sapochak, J.E. Rainbolt, L. Cosimbescu, E. Polikarpov, J.S. Swensen, and L. Wang, et al. 2009. "Design of new anchored p-dopants for high power efficiency OLEDs." In Organic Light Emitting Materials and Devices XIII: Proceedings of the SPIE, edited by F So and C Adachi, 7415, Article No. 741505. Bellingham, Washington:SPIE. PNNL-SA-67550. doi:10.1117/12.827298
Padmaperuma A.B., P.K. Koech, L. Cosimbescu, E. Polikarpov, J.S. Swensen, N. Chopra, and F. So, et al. 2009. "Tuning charge balance in PHOLEDs with ambipolar host materials to achieve high efficiency." In Organic Light Emitting Materials and Devices XIII: Proceedings of the SPIE, edited by F So and C Adachi, 7415, Paper No. 74150H. Bellingham, Washington:SPIE. PNNL-SA-68473. doi:10.1117/12.826905