46.      G. Lee, D.B. Go, C.P. O'Brien, "Nonthermal Plasma-Stimulated C–N Coupling from CH4 and N2 Depends on the Presence of Surface CHx and Plasma-Phase CN Species" ACS Appl. Mater. Interf. (in press).

45.     W. Shaw et al., "A US perspective on closing the carbon cycle to defossilize difficult-to-electrify segments of our economy," Nature Reviews Chemistry  8 (2024) 376-400.

44.     G. Lee, C. Yan, W.F. Schneider, D.B. Go, C.P. O'Brien, "Observation and Characterization of Vibrationally Active Surface Species Accessed with Nonthermal Nitrogen Plasmas"ACS Appl. Mater. Interf. 16 (2024) 4561-4569.

43.     H. Xu, S.G. Pate, C.P. O'Brien, "The Influence of Amine Structure on the Mechanism of CO2 Facilitated Transport Across Amine-Functionalized Polymer Membranes: An Operando Spectroscopy Study," J. Membr. Sci. 689 (2024) 122163.

42.     H. Xu, R. Jin, C.P. O'Brien, "Multi-Functional Polymer Membranes Enable Integrated CO2 Capture and Conversion in a Single Continuous-Flow Membrane Reactor Under Mild Conditions," ACS Appl. Mater. Interf. 15 (2023) 56305-56313.

41.     H. Xu, S.G. Pate, C.P. O'Brien, "Mathematical Modeling of CO2 Facilitated Transport Across Polyvinylamine Membranes with Direct Operando Observation of Amine Carrier Saturation," Chem. Eng. J. 460 (2023) 141728.

40.     R. Jin, H. Xu, J. Easa, A. Chapero-Planell, C.P. O'Brien, "Cycloaddition of CO2 to Epichlorohydrin over Pyridine, Vinylpyridine, and Poly(vinylpyridine): The Influence of Steric Crowding on the Reaction Mechanism" J. Phys. Chem. C 127 (2023) 1441-1454 (Invited as part of the virtual special issue "Early-Career and Emerging Researchers in Physical Chemistry Volume 2").

39.     C.P. O'Brien, M.J. Watson, A.W. Dowling "Challenges and Opportunities in Converting CO2 to Carbohydrates," ACS Energy Lett. 7 (2022) 3509-3523.

38.     C. Yan, C. Waitt, I. Akintol, G. Lee, J. Easa, R. Clarke, F. Gang, D. Poirier, H.O. Otor, G. Rivera-Castro, D.B. Go, C.P. O'Brien, J.C. Hicks, W.F. Schneider, H. Ma "Recent Advances in Plasma Catalysis," J. Phys. Chem. C  126 (2022) 9611-9614.

37.     H. Xu,  J. Easa, S.G. Pate, R. Jin, C.P. O'Brien,  "Operando Surface-Enhanced Raman-Scattering (SERS) for Probing CO2 Facilitated Transport Mechanisms of Amine-Functionalized Polymeric Membranes," ACS Appl. Mater. Interf. 14 (2022) 15697-15705.

36.     S.G. Pate, H. Xu, C.P. O'Brien,  "Operando Observation of CO2 Transport Intermediates in Polyvinylamine Facilitated Transport Membranes, and the Role of Water in the Formation of Intermediates, Using Transmission FTIR Spectroscopy," J. Mater. Chem. A  10 (2022) 4418-4427.

35.     J. Easa, C. Yan, W.F. Schneider, C.P. O'Brien,  "CO and C3H6 poisoning of hydrogen permeation across Pd77Ag23 Alloy membranes: A comparative study with pure palladium," Chem. Eng. J. 430 (2022) 133080.

34.     G. Lee, D.B. Go, C.P. O'Brien,  "Direct Observation of Plasma-Stimulated Activation of Surface Species Using Multimodal In Situ/Operando Spectroscopy Combining Polarization-Modulation Infrared Reflection-Absorption Spectroscopy, Optical Emission Spectroscopy, and Mass Spectrometry," ACS Appl. Mater. Intef. 13 (2021) 56242-56253.

33.     B. Park, R. Andersson, S.G. Pate, J. Liu, C.P. O'Brien, G. Hernandez, J. Mindemark, J.L. Schaefer,  "Ion Coordination and Transport in Magnesium Polymer Electrolytes Based on Polyester-co-Polycarbonate," accepted by Energy Mater. Adv. (2021).

32.     R. Jin, J. Easa, C.P. O'Brien, "Highly Active CuOx/SiO2 Dot Core/Rod Shell Catalysts with Enhanced Stability for Reverse Water-Gas Shift Reaction," ACS Appl. Mater. Interf. 13, 32 (2021) 38213-38220.

31.     G. Lee, J. Easa, R. Jin, A. Booth C.P. O'Brien, "Enhancing the surface sensitivity of in-situ/operando characterization of palladium membranes through polarization modulation and synthesis of optically smooth palladium thin films," J. Membr. Sci. 637 (2021) 119605.

30.      C.P O’Brien, “A Perspective on the Application of Operando Spectroscopy to Probe the Structure, Performance, and Dynamics of Membranes under Realistic Operating Conditions,”  J. Membr. Sci. 619 (2021) 118751.

29.      S. Shan, J. Li, Y. Maswadeh, C. O’Brien, H. Kareem, D. Tran, I. Lee, Z. Wu, S. Wang, S. Yan, H. Cronk, D. Mott, L. Yang, J. Luo, V. Petkov, and C.-J. Zhong, “Surface oxygenation of multicomponent nanoparticles toward active and stable oxidation catalysts ” Nat. Comm. 11 (2020) 4201.

28.      B. Hanrahan, J. Easa, A. Payne, Y. Espinal, S. P. Alpay, H. Kareem, C. O’Brien, and A. Smith, “A Portable Power Concept Based on Combustion and Pyroelectric Energy Conversion” Cell Reports Phys. Sci. 1 (2020) 100075.

27.      R. Jin, J. Easa, C.P. O'Brien, “Ru-Promoted CO2 Activation for Oxidative Dehydrogenation of Propane over Chromium Oxide Catalyst,” Catal. Sci. Tech.  10 (2020) 1769-1777.

26.      J. Easa, R. Jin, C.P. O'Brien, “Evolution of Surface and Bulk Carbon Species Derived from Propylene and their Influence on the Interaction of Hydrogen with Palladium ” J. Membr. Sci., 596 (2020) 117738.

25.       C.P. O’Brien, I.C. Lee, “The Interaction of CO with PdCu Alloy Hydrogen Separation Membranes: An Operando Infrared Spectroscopy Study,” Catal. Today, 336 (2019) 216-222.

24.      H. Kareem, S. Shan, Z.-P. Wu, L. Velasco, K. Moseman,  C.P. O’Brien, D.T. Tran, I.C. Lee, Y. Maswadeh, L. Yang, D. Mott, J. Luo, V. Petkov, C.-J. Zhong, “Catalytic Oxidation of Propane over Palladium Alloyed with Gold: An Assessment of the Chemical and Intermediate Species ,” Catal. Sci. Tech., 8 (2018) 6228-6240.

23.       H. Kareem, S. Shan, F. Lin, J. Li, Z. Wu, B. Prasai, C.P. O'Brien, I.C. Lee, D.T. Tran, L. Yang, D. Mott, V. Petkov, J. Luo, C.-J. Zhong, "Evolution of Surface Catalytic Sites on Thermochemically-Tuned Gold-Palladium Nanoalloys," Nanoscale 10 (2018) 3849-3862.

22.       K.-H. Dostert, C.P. O’Brien, F. Mirabella, F. Ivars-Barcelo, S. Attia, E. Spadafora, S. Schauermann, H.-J. Freund, “Selective Partial Hydrogenation of Acrolein on Pd: A Mechanistic Study,” ACS Catalysis 7 (2017) 5523-5533. 

21.       C.P. O’Brien, I.C. Lee, “CO Poisoning and CO Hydrogenation on the Surface of Pd Hydrogen Separation Membranes,” J. Phys. Chem. C. 121 (2017) 16864-16871.

20.       W. Liu, Y. Jiang, K.-H. Dostert, C.P. O’Brien, W. Riedel, A. Savara, S. Schauermann, A. Tkatchenko, “Catalysis beyond frontier molecular orbitals: Selectivity in partial hydrogenation of multi-unsaturated hydrocarbons on metal catalysts,” Sci. Adv. 3 (2017) e1700939.

19.       C.P. O’Brien, I.C. Lee, “Kinetic Modeling of Spillover and Temperature-Programmed Oxidation of Oxy-Carbon Surface Species on Pt/Al2O3,” J. Phys. Chem. C. 121 (2017) 12329-12336.

18.       C.P. O’Brien, I.C. Lee, “A detailed spectroscopic analysis of the growth of oxy-carbon species on the surface of Pt/Al2O3 during propane oxidation,” J. Catal. 347 (2017) 1-8. 

17.       C.P. O’Brien, Z. W. Dunbar, I.C. Lee, “A spectroscopic membrane permeation cell for in-situ infrared-reflection absorption spectroscopic analysis of membrane surfaces and simultaneous measurement of trans-membrane gas permeation rates,” J. Membr. Sci. 526 (2017) 43-51.

16.       C.P. O’Brien, K.-H. Dostert, S. Schauermann, H.-J. Freund, “Selective Hydrogenation of Acrolein over Pd Model Catalysts: Temperature and Particle-Size Effects,” Chem. Eur. J. 22 (2016) 15856-15863.

15.       C. O’Brien, K.-H. Dostert, M. Hollerer, C. Stiehler, F. Calaza, S. Schauermann, S. Shaikhutdinov, M. Sterrer, H.-J. Freund, “Supports and Modified Nano-particles for Designing Model Catalysts,” Faraday Discuss. 188 (2016) 309-321.

14.       K.-H. Dostert, C.P. O’Brien, F. Mirabella, F. Ivars-Barcelo, S. Schauermann, “Adsorption of Acrolein, Propanal, and Allyl Alcohol on Pd(111): A Combination of Infrared Reflection-Absorption Spectroscopy and Temperature-Programmed Desorption Studies,” Phys. Chem. Chem. Phys. 18 (2016) 13960-13973. 

13.       K.-H. Dostert, C.P. O’Brien, W. Liu, W. Riedel, A. Savara, A. Tkatchenko, S. Schauermann, H.-J. Freund, “Adsorption of isophorone and trimethyl-cyclohexanone on Pd(111): A combination of infrared reflection absorption spectroscopy and density functional theory calculations,” Surf. Sci. 650 (2016) 149-160. 

12.       C.P. O’Brien, G.R. Jenness, H. Dong, D.G. Vlachos, I.C. Lee, “Deactivation of Pt/Al2O3 during propane oxidation at low temperatures: Kinetic regimes and platinum oxide formation,” J. Catal. 337 (2016) 122-132.

11.       P. Dementyev, K.-H. Dostert, F. Ivars-Barcelo, C.P. O’Brien, F. Mirabella, S. Schauermann, X. Li, J. Paier, J. Sauer, H.-J. Freund, “Water Interaction with Iron Oxides,” Angew. Chem. Int. Ed. 54 (2015) 13942-13946.

10.       K.-H. Dostert, C.P. O’Brien, F. Ivars-Barcelo, S. Schauermann, H.-J. Freund, “Spectators Control Selectivity in Surface Chemistry: Acrolein Partial Hydrogenation over Pd,” J. Am. Chem. Soc. 137 (2015) 13496-13502. 

9.         K.-H. Dostert, C.P. O’Brien, W. Riedel, A. Savara, W. Liu, M. Oehzelt, A. Tkatchenko, S. Schauermann, “Interaction of Isophorone with Pd(111): A Combination of IRAS, NEXAFS, and DFT Studies,” J. Phys. Chem. C 118 (2014) 27833-27842. 

8.         M. Peter, J.M.F. Camacho, S. Adamovski, C.P. O’Brien, K.-H. Dostert, S. Schauermann, H.-J. Freund, “Trends in the binding strength of surface species on nanoparticles: how does the adsorption energy scale with the particle size,” Angew. Chem. Int. Ed. 52 (2013) 5175-5179.

7.         C.P. O’Brien, J.B. Miller, B.D. Morreale, A.J. Gellman, “H2-D2 exchange kinetics in the presence of H2S over Pd4S, Pd70Cu30, and Pd47Cu53 surfaces,” J. Phys. Chem. C 116 (2012) 17657-17667.

6.         C.P. O’Brien, J.B. Miller, B.D. Morreale, A.J. Gellman, “The kinetics of H2-D2 exchange over Pd, Cu, and PdCu foil surfaces,” J. Phys. Chem. C 115 (2011) 24221-24230.

5.         C.P. O’Brien, J.B. Miller, A.J. Gellman, B.D. Morreale, “The hydrogen permeability of Pd4S,” J. Membr. Sci. 371 (2011) 263-267.

4.         C.P. O’Brien, B.H. Howard, J.B. Miller, B.D. Morreale, A.J. Gellman, “Inhibition of hydrogen transport through Pd and Pd47Cu53 membranes by H2S at 350 °C,” J. Membr. Sci. 349 (2010) 380-384.

3.       J.B. Miller, D.R. Alfonso, B.H. Howard, C.P. O’Brien, B.D. Morreale, “Hydrogen dissociation on Pd4S surfaces,” J. Phys. Chem. C 113 (2009) 18800-18806.

2.         N.B. Cramer, C.P. O’Brien, C.N. Bowman, “Mechanisms, polymerization rate scaling, and oxygen inhibition with an ultra-rapid monovinyl urethane acrylate,” Polymer 49 (2008) 4756-4761.

1.       J.A. Carioscia, L. Schneidewind, C. O’Brien, R. Ely, C. Feeser, N. Cramer, C.N. Bowman, “Thiol-norbornene materials: Approaches to develop high Tg thiol-ene polymers,” J. Polym. Sci., Part A: Polym. Chem. 45 (2007) 5686-5696.