Publications & Expertise


32. Christian Khalil, Joe Braham Chahine, Tony Haykal, Cynthia Al Hageh, Sandra Rizk and Rony S. Khnayzer* "E-cigarette aerosol induced cytotoxicity, DNA damages and late apoptosis in dynamically exposed A549 cells" Chemosphere, 2020, accepted.

31. Linda Bechnak, Christian Khalil, Riham El Kurdi, Rony S. Khnayzer*, Digambara Patra “Enhancement of anti-cancer and photodynamic activities of curcumin by encapsulation in amphiphilic block co-polymer”, Photochem. Photobiol. Sci., 2020, DOI: 10.1039/D0PP00032A

30. Khalifeh, M.; Hobeika, R.; El Hayek, L; Nasrallah, P.; Jabre, V.; Stephan, J. S.; Khnayzer, R. S.; Khalil, C.; Sleiman, S. F. “Nicotine induces resilience to chronic social defeat stress in a mouse model of water pipe tobacco smoking by activating hippocampal BDNF signaling”. Behavioural Brain Research, 2020, 382, 112499.

29. Khalil, C.; Chahine, J. B.; Chahla, B.; Hobeika, T.; Khnayzer, R. S. “Characterization and cytotoxicity assessment of nargile smoke using dynamic exposure”. Inhalation Toxicology, 2019, 31, 343-356.

28. Mehanna, S.; Mansour, N.; Audi, H.; Bodman-Smith, K.; Mroueh, M. A.; Taleb, R. I.; Daher, C. F. and Khnayzer, R. S.* “Enhanced cellular uptake and photochemotherapeutic potential of a lipophilic strained Ru(II) polypyridyl complex” RSC Advances, 2019, 9, 17254 – 17265.!divAbstract

27. Khalil, C.; Al Hageh, C.; Korfali, S.; Khnayzer, R. S. "Municipal leachates health risks: chemical and cytotoxicity assessment from regulated and unregulated municipal dumpsites in Lebanon." Chemosphere, 2018, 208, 1-18.

26. Mansour, N.; Mehanna, S.; Taleb, R. I.; Mroueh, M.; Bodman‐Smith, K.; El-Sibai, M.; Daher, C. F.; Khnayzer, R. S.* "Photoactivatable Ru(II) complex bearing 2,9-diphenyl-1,10-phenanthroline: unusual photochemistry and significant potency on cisplatin-resistant cell lines." Eur. J. Inorg. Chem., 2018, 22, 2524-2532.

25. Al Hageh, C.; Al Assaad, M.; El Masri, Z.; Samaan, N.; El-Sibai, M.; Khalil, C.; and Khnayzer, R. S.* "Long-lived cuprous bis-phenanthroline complex for the photodynamic therapy of cancer." Dalton Trans. 2018, 47, 4959 - 4967.!divAbstract

24. 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.

Azar, D. F.; Audi, H.; Farhat, S.; El-Sibai, M.; Abi-Habib, R. J.; Khnayzer, R. S.* Cover Picture, 2017, 46.

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., 2017, 46, 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. 2016, 52, 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.