Publications & Expertise


25. Audi, H.; Azar, A.; Mahjoub, H. Farhat, S.; El-Masri, Z.; El-Sibai, M.; Abi-Habib, R.; and Khnayzer, R. S.* “Cytotoxicity Modulation of Ruthenium (II) tris-bathophenanthroline Complexes With Systematically Varied Charge.” J. Photochem. Photobiol. A, 2018, 351, 59–68.

24. Azar, D. F.;  Audi, H.; Farhat, S.; El-Sibai, M.;  Abi-Habib, R. J.; Khnayzer, R. S.* Cover Picture,  201746.

23. Azar, D. F.;  Audi, H.; Farhat, S.; El-Sibai, M.;  Abi-Habib, R. J.; Khnayzer, R. S.* Phototoxicity of strained Ru(II) complexes: is it the metal complex or the dissociating ligand? Dalton Trans., 201746, 11529 – 11532.!divAbstract

22. Khnayzer, R. S.*; Olaiya, B. S.; El Roz, K. A.; Castellano, F. N. Cover Picture and Cover Profile. ChemPlusChem 2016, 81, 1016.

21. Khnayzer, R. S.*; Olaiya, B. S.; El Roz, K. A.; Castellano, F. N. Homogeneous Photocatalytic H2 Production using a Ru(II) Bathophenanthroline MLCT Photosensitizer. ChemPlusChem 2016, 81, 1090-1097.

20. McGoorty, M. M.; Khnayzer, R. S.; Castellano, F. N., Enhanced Photophysics from Self-Assembled Cyclometalated Ir(III) Complexes in Water. Chem. Commun. 201652, 7846-7849.

19.  El-Assaad, T.H.; Auer, M.; Castañeda, R.; Hallal, K. H.; Jradi, F. M.; Mosca, L.; Khnayzer, R. S.; Patra, D.; Timofeeva, T. V.; Brédas, J-L.; List-Kratochvil, E. J. W.; Wex, B.; Kaafarani, B. R. “Tetraaryl Pyrenes: Photophysical Properties, Computational Studies, Crystal Structures, and Application in OLEDs”, J. Mater. Chem. C. 2016, 4, 3041-3058.!divAbstract

18. Jurss, J. W.; Khnayzer, R. S.; Panetier, J. A.; El Roz, K. A.; Nichols, E. M.; Head-Gordon, M.; Long, J. L.; Castellano, F. N.; Chang, C. J. "Bioinspired design of redox-active ligands for multielectron catalysis: effects of positioning pyrazine reservoirs on cobalt for electro- and photocatalytic generation of hydrogen from water" Chem. Sci., 2015, 6, 4954.!divAbstract

17. Khnayzer, R. S.*; Martin, D. R.; Codding, C. L.; Castellano, F. N. “Parallelization of Photocatalytic Gas-Producing Reactions”, 2015, Rev. Sci. Instrum. 2015, 86, 034101.

16. Mosca, L.; Khnayzer, R. S.Lazorski, M. S.; Danilov, E. O.; Castellano, F. N.; and Anzenbacher P. “Sensing of 2,4,6-Trinitrotoluene (TNT) and 2,4-Dinitrotoluene (2,4-DNT) in the Solid State with Photoluminescent Ru(II) and Ir(III) Complexes.” Chem. Eur. J.2015, 21, 4056-4064

15. Khnayzer, R. S.; Thoi, V. S.; Nippe, M.; King, A. E.; Jurss, J. W.; El Roz, K. A.; Long, J. R.; Chang, C. J.; and Castellano, F. N. “Towards a Comprehensive Understanding of Visible-Light Photogeneration of Hydrogen from Water Using Cobalt(II) Polypyridyl Catalysts” Energy Environ. Sci., 2014, 7, 1477-1488.!divAbstract

14. Khnayzer, R. S.; McCusker, C. E.; Olayai, B. S.; Castellano, F. N. "Robust Cuprous Phenanthroline Sensitizer for Solar Hydrogen Photocatalysis". J. Am. Chem. Soc. 2013, 135, 14608-14070. 

13. El-Ballouli, A. O.; Khnayzer, R. S.; Khalife, J. C.; Fonari , A.;  Hallal, K. M.; Timofeeva, T. V.;  Patra, D.; Castellano, F. N.; Wex, B.; Kaafarani, B. R. Diarylpyrenes vs. Diaryltetrahydropyrenes: Synthesis, Crystal Structures, Fluorescence, and Upconversion Photochemistry .  J. Photochem. Photobiol. A 2013, 272, 49-57. 

12. Nippe M.; Khnayzer, R. S.; Panetier, J. A.; Zee, D. Z.; Olaiya, B. S.; Gordon, M. H.;  Chang, C. J.; Castellano, F. N.; Long, J. R. “Catalytic Proton Reduction with Transition Metal Complexes of the Redox-Active Ligand bpy2PYMe”. Chem. Sci. 2013, 4, 3934-3945.!divAbstract
       This paper has been listed among most read papers on the RSC website. 

11.        Khnayzer, R. S. Photocatalytic Water Splitting: Materials Design and High-Throughput Screening of Molecular Compositions. Ph. D. Dissertation, Bowling Green State University, Bowling Green, OH, 2013.

10.         Xin Yang, X.; Walpita, J.; Zhou, D.; Luk, H. L.; Vyas, S.; Khnayzer, R. S.; Tiwari, S. C.; Diri, K.; Hadad, C. M.; Castellano, F. N.; Krylov, A. I.; Glusac, K. D. Towards Organic Photohydrides: Excited-state Behavior of 10-Methyl-9-phenyl-9, 10-dihydroacridine. J. Phys Chem B. 2013, In Press.

9.         Khon, E.; Lambright, K.; Khnayzer, R. S.; Moroz, P.; Dimuthu, P.; Butaeva, E.; Lambright, S.; Castellano, F. N.; Zamkov, M. Improving the Catalytic Activity of Semiconductor Nanocrystals through Selective Domain Etching. Nano Lett. 2013, 13, 2016-2023.

8.        Kaafarani, B. R.; El-Ballouli, A. O.; Trattnig, R.; Fonari, A.; Sax, S.; Wex, B.; Risko, C.; Khnayzer, R. S.; Barlow, S.; Patra, D.; Timofeeva, T. V.; List, E. J. W.; Brédas, J.-L.; Marder, S. R. Bis(Carbazolyl) Derivatives of Pyrene and Tetrahydropyrene: Synthesis, Structures, Optical Properties, Electrochemistry, and Electroluminescence. J. Mater. Chem. C 2013, 1, 1638-1650.

7.       Perera, D.; Lorek, R.; Khnayzer, R. S.; Moroz, P.; O'Connor, T.; Khon, D.; Diederich, G.; Kinder, E.; Lambright, S.; Castellano, F. N.; Zamkov, M., Photocatalytic Activity of Core/Shell Semiconductor Nanocrystals Featuring Spatial Seperation of Charges. J. Phys. Chem. C 2012, 116, 22786-22793.

6.        Khnayzer, R. S.; Mara, M. W.; Huang, J.; Shelby, M. L.; Chen, L. X.; Castellano, F. N., Structure and Activity of Photochemically Deposited "CoPi" Oxygen Evolving Catalyst on Titania. ACS Catal. 2012, 2, 2150-2160.
    This paper has been listed among most read papers on the ACS website. 

5.         Haefele, A.; Blumhoff, J.; Khnayzer, R. S.; Castellano, F. N., Getting to the (Square) Root of the Problem: How to Make Noncoherent Pumped Upconversion Linear. J. Phys. Chem. Lett. 2012, 3, 299-303.|
    This work has been highlighted in a slide-share.

4.          Khnayzer, R. S.; Thompson, L. B.; Zamkov, M.; Ardo, S.; Meyer, G. J.; Murphy, C. J.; Castellano, F. N., Photocatalytic Hydrogen Production at Titania-Supported Pt Nanoclusters That Are Derived from Surface-Anchored Molecular Precursors. J. Phys. Chem. C 2012, 116, 1429-1438.   

3.         Khnayzer, R. S.; Blumhoff, J.; Harrington, J. A.; Haefele, A.; Deng, F.; Castellano, F. N., Upconversion-powered photoelectrochemistry. Chem. Commun. 2012, 48, 209-211.                   
    This paper has been listed among most read papers on the RSC website. 

2.         Acharya, K. P.; Khnayzer, R. S.; O’Connor, T.; Diederich, G.; Kirsanova, M.; Klinkova, A.; Roth, D.; Kinder, E.; Imboden, M.; Zamkov, M., The Role of Hole Localization in Sacrificial Hydrogen Production by Semiconductor–Metal Heterostructured Nanocrystals. Nano Lett. 2011, 11, 2919-2926. 
    This work has been featured in Science Newsline magazine. 

1.         Acharya, K. P.; Khon, E.; O’Conner, T.; Nemitz, I.; Klinkova, A.; Khnayzer, R. S.; Anzenbacher, P.; Zamkov, M., Heteroepitaxial Growth of Colloidal Nanocrystals onto Substrate Films via Hot-Injection Routes. ACS Nano 2011, 5, 4953-4964.


1. Organic and inorganic syntheses: including Schlenk line and glovebox operation, along with product isolation and characterization (Liquid chromatography, ESI-MS, MALDI, NMR, etc.).

2. Gas analysis: quantitative detection of volatile products, including gas chromatography and residual gas analyzer operation and assembly.

3. Spectroscopy: time-resolved and steady-state measurements, infra-red and Raman spectroscopy.

4. Equipment engineering: design and assembly of high-throughput photochemical reactors for quantitative hydrogen production analysis.

5. Expertise in electrochemistry, photochemistry and photoelectrochemistry: employment of transition metal complexes and semiconductors for usage in solar energy conversion and storage.

6. Materials and device assembly: Semiconductors thin-film formation along with operational photoelectrochemical cell assembly.