41. Maldonado-Lopez, D.; Huang, P.-W.; Sanchez-Lievanos, K. R.; Jana, G.; Mendoza-Cortes, J. L.;Knowles, K. E.; Hatzell, M. C. Nitrogen-containing Surface Ligands Lead to False Positives for Photofixation of N₂ on Metal Oxide Nanocrystals: An Experimental and Theoretical Study. Adv. Funct. Mater., 2024, 2413319. (link)

40. Sanchez-Lievanos, K. R.; Sun, T.; Gendrich, E. A.; Knowles, K. E. Surface Adsoprtion and Photoinduced Degradation: A Study of Spinel Ferrite Nanomaterials for Removal of a Model Organic Pollutant from Water. Chem. Mater. 2024, 36, 3981-3998. (Invited Perspective) (link)

39. Ramírez, E.; Carmona-Pérez, D.; Marco, J. F.; Sanchez-Lievanos, K. R.; Sabinas-Hernández, S. A.; Knowles, K. E.; Elizalde-González, M. P. Comparison of MAF-32 and a One-Pot Synthesized Superparamagnetic Iron Oxide/MAF-32 Composite for the Adsorption of Diclofenac. Materials, 2024, 17, 2269. (link)

38. Beidelman, B. A.; Zhang, X.; Matson, E. M.; Knowles, K. E. Acidity of Carboxylic Acid Ligands Influences the Formation of VO₂(A) and VO₂(B) Nanocrystals under Solvothermal Conditions. ACS Nanosci. Au, 2023, 3, 381-388. (link)

37. Shelton, J. L.; Knowles, K. E. Polaronic Optical Transitions in Hematite (α-Fe₂O₃) Revealed by First-Principles Electron-Phonon Coupling. J. Chem. Phys., 2022, 157, 174703. (link)

36. Beidelman, B. A.; Zhang, X.; Sanchez-Lievanos, K. R.; Selino, A. V.; Matson, E. M.; Knowles, K. E. Influence of Water Concentration on the Solvothermal Synthesis of VO₂(B) Nanocrystals. CrystEngComm, 2022, 24, 6009-6017. (link)

35. Sanchez-Lievanos, K. R.; Knowles, K. E.^* Controlling Cation Distribution and Morphology in Colloidal Zinc Ferrite Nanocrystals. Chem. Mater., 2022, 34, 7446-7459. (link)

34. Chakraborty, S.*; Schreiber, E.*; Sanchez-Lievanos, K. R.; Tariq, M.; Brennessel, W. W.; Knowles, K. E.; Matson, E. M. Modelling local structural and electronic consequences of proton and hydrogen-atom uptake in VO₂ with polyoxovanadate clusters. Chem. Sci., 2021, 12, 12744-12753. (*these authors made equal contributions to this work) (link)

33. Brewster, D. A.*; Koch, M. D.*; Knowles, K. E. Evaluation of electrochemical properties of nanostructured metal oxide electrodes immersed in redox-inactive organic media. Phys. Chem. Chem. Phys., 2021, 23, 17904-17916. DOI:10.1039/D1CP02370E. (*these authors made equal contributions to this work) (link)

32. Shelton, J. L.; Knowles, K. E. Thermally Activated Optical Absorption into Polaronic States in Hematite. J. Physical. Chem. Lett. 2021, 12, 3343-3351. (link)

31. Sanchez-Lievanos, K. R.; Stair, J. L.; Knowles, K. E. Cation Distribution in Spinel Ferrite Nanocrystals: Characterization, Impact on their Physical Properties, and Opportunities for Synthetic Control. Inorg. Chem. 2021, 60, 4291-4305.(Invited contribution to the Forum on Inorganic Chemistry of Nanoparticles) (link)

30. Sanchez-Lievanos, K. R.; Tariq, M.; Brennessel, W. W.; Knowles, K. E. Heterometallic Trinuclear Oxo-centered Clusters as Single-Source Precursors for Synthesis of Stoichiometric Monodisperse Transition Metal Ferrite Nanocrystals. Dalton Trans. 2020, 49, 16348-16358. (Invited Contribution to the New Talent: Americas special issue) (link)

29. Brewster, D. A.; Bian, Y.; Knowles, K. E. Direct Solvothermal Synthesis of Phase-Pure Colloidal NiO Nanocrystals. Chem. Mater. 2020, 32, 2004-2013. (link)

28. Tariq, M.; Koch, M. D.; Andrews, J. W.; Knowles, K. E. Correlation Between Surface Chemistry and Optical Properties in Colloidal Cu₂O Nanoparticles. J. Phys. Chem. C 2020, 124, 4810-4819. (link)

27. Brewster, D. A.; Sarappa, D. J.; Knowles, K. E. Role of Aliphatic Ligands and Solvent Composition in the Solvothermal Synthesis of Iron Oxide Nanocrystals. Polyhedron 2019, 157, 54-62. (link)

26. Knowles, K. E.; Koch, M. D.; Shelton, J. L. Three Applications of Ultrafast Transient Absorption Spectroscopy of Semiconductor Thin Films: Spectroelectrochemistry, Microscopy, and Identification of Thermal Contributions. J. Mater. Chem. C 2018, 6, 11853-11867. (Invited Article: Emerging Investigators Issue) (link)

From postdoc work at the University of Washington

25. Marchioro, A.; Whitham P. J.; Nelson, H. D.; De Siena, M. C.; Knowles, K. E.; Polinger, V. Z.; Reid, P. J.; Gamelin, D. R. Strong Dependence of Quantum-Dot Delayed Luminescence on Excitation Pulse Width. J. Phys. Chem. Lett. 2017, 8, 3997-4003. (link)

24. Marchioro, A.; Whitham P. J.; Knowles, K. E., Kilburn, T. B.; Reid, P. J.; Gamelin, D. R. Tunneling in the Delayed Luminescence of Colloidal CdSe, Cu⁺-Doped CdSe, and CuInS₂ Semiconductor Nanocrystals, and Relationship to Blinking. J. Phys. Chem. C 2016, 120, 27040-27049. (link)

23. Yang, L.; Knowles, K. E.; Gopalan, A.; Hughes, J. E.; James, M. C.; Gamelin, D. R. One-Pot Synthesis of Monodisperse Colloidal Copper-Doped CdSe Nanocrystals Mediated by Ligand-Copper Interactions. Chem. Mater. 2016, 28, 7375-7384. (link)

22. Whitham, P. J.; Marchioro, A.; Knowles, K. E., Kilburn, T. B.; Reid, P. J.; Gamelin, D. R. Single-Particle Photoluminescence Spectra, Blinking, and Delayed Luminescence of Colloidal CuInS₂ Nanocrystals. J. Phys. Chem. C 2016, 120, 17136-17142. (link)

21. Knowles, K. E.*; Hartstein, K. H.; Kilburn, T. B.; Marchioro, A.; Nelson, H. D.; Whitham, P. J.; Gamelin, D. R.* Luminescent Colloidal Semiconductor Nanocrystals Containing Copper: Synthesis, Photophysics, and Applications. Invited Review, Chem. Rev. 2016, 10820-10851. *denotes co-corresponding author (link)

20. Knowles, K. E.; Nelson, H. D.; Kilburn, T. B.; Gamelin, D. R. Singlet-Triplet Splittings in the Luminescent Excited States of Colloidal Cu⁺:CdSe, Cu⁺:InP, and CuInS₂ Nanocrystals: Charge-Transfer Configurations and Self-Trapped Excitons, J. Am. Chem. Soc. 2015,  137,  13138-13147. (link)

19. Schimpf, A. M.; Knowles, K. E.; Carroll, G. M.; Gamelin, D. R. Electronic Doping and Redox-Potential Tuning in Colloidal Semiconductor Nanocrystals, Acc. Chem. Res. 2015, 48, 1929-1937. (link)

18. Whitham, P. J.; Knowles, K. E.; Reid, P. J.; Gamelin, D. R. Photoluminescence Blinking and Reversible Electron Trapping in Copper-Doped CdSe Nanocrystals, Nano Lett. 2015, 15, 4045-4051. (link)

17. Knowles, K. E.; Kilburn, T. B.; Alzate, D. G.; McDowall, S.; Gamelin, D. R. Bright CuInS₂/CdS Nanocrystal Phosphors for High-Gain Full-Spectrum Luminescent Solar Concentrators, Chem. Commun. 2015, 51, 9129-9132. (link)

16. Bradshaw, L. R.; Knowles, K. E.; McDowall, S.; Gamelin, D. R. Nanocrystals for Luminescent Solar Concentrators, Nano Lett. 2015, 15, 1315-1323. (link) Featured in Nature: News and Views: Debije, M. Renewable Energy: Better luminescent solar panels in prospect. Nature 2015, 519, 298. (link)

From graduate work at Northwestern University

15. Lefler, K. M.; Brown, K. E.; Salamant, W. A.; Dyar, S. M.; Knowles, K. E.; Wasielewski, R. Triplet State Formation in Photoexcited Slip-Stacked Perylene-3,4:9,10-bis(dicarboximide) Dimers on a Xanthene Scaffold, J. Phys. Chem. A 2013, 117, 10333-10345. (link)

14. Knowles, K. E.; Tagliazucchi, M.; Malicki, M.; Swenson, N. K.; Weiss, E. A. Electron Transfer as a Probe of the Permeability of Organic Monolayers on the Surfaces of Colloidal PbS Quantum Dots, J. Phys. Chem. C 2013, 117, 15849-15857. (link)

13. Knowles, K. E.; Peterson, M. D.; McPhail, M R.; Weiss, E. A. Exciton Dissociation within Quantum Dot-Organic Complexes: Mechanisms, Use as a Probe of Interfacial Structure, and Applications, J. Phys. Chem. C 2013, 117, 10229-10243. (link)

12. Knowles, K. E.; Malicki, M.; Parameswaran, R.; Cass, L. C.; Weiss, E. A. Spontaneous Multi-Electron Transfer from the Surfaces of PbS Quantum Dots to Tetracyanoquinodimethane, J. Am. Chem. Soc. 2013, 135, 7264-7271. (link)

11. Knowles, K. E.; Malicki, M.; Weiss, E. A. Dual-Timescale Photoinduced Electron Transfer from PbS Quantum Dots to a Molecular Acceptor, J. Am. Chem. Soc. 2012, 134, 12470-12473. (link)

10. Malicki, M.; Knowles, K. E.; Weiss, E. A. Gating of Hole Transfer from Photoexcited PbS Quantum Dots to Aminoferrocene by the Ligand Shell of the Dots, Chem. Commun. 2013, 49, 4400-4402. (link)

9. Evans, C. M.; Cass, L. C.; Knowles, K. E.; Tice, D. B.; Chang, R. P. H.; Weiss, E. A. Review of the Synthesis and Properties of Colloidal Quantum Dots: The Evolving Role of Coordinating Surface Ligands, J. Coord. Chem. 2012, 65, 2391-2414. (link)

8. Knowles, K. E.; Frederick, M. T.; Tice, D. B.; Morris-Cohen, A. J.; Weiss, E. A. Colloidal    Quantum Dots: Think Outside the (Particle-in-a-)Box, J. Phys. Chem. Lett. 2012, 3, 18-26. (link)

7. Knowles, K. E.; McArthur, E. A.; Weiss, E. A. A Multi-Timescale Map of Radiative and Nonradiative Decay Pathways for Excitons in CdSe Quantum Dots. ACS Nano 2011, 5, 2026.

6. Frederick, M. T.; Achtyl, J. A.; Knowles, K. E.; Weiss, E. A.; Geiger, F. M. Surface-Amplified Ligand Disorder in CdSe Quantum Dots Determined by Electron and Coherent Vibrational Spectroscopies, J. Am. Chem. Soc. 2011, 133, 7476-7481. (link)

5. Donakowski, M. D.; Godbe, J. M.; Sknepnek, R.; Knowles, K. E.; Olvera de la Cruz, M.; Weiss, E. A. A Quantitative Description of the Binding Equilibria of para-Substituted Aniline Ligands and CdSe Quantum Dots.  J. Phys. Chem. C 2010, 114, 22526-22534. (link)

4. McArthur, E. A.; Morris-Cohen, A. J.; Knowles, K. E.; Weiss, E. A. Charge Carrier Resolved Relaxation of the First Excitonic State in CdSe Quantum Dots Probed with Near-Infrared Transient Absorption Spectroscopy, J. Phys. Chem. B 2010, 114, 14514-14520. (link)

3. Morris-Cohen, A. J.; Donakowski, M. D.; Knowles, K. E.; Weiss, E. A. The Effect of a Common Purification Procedure on the Chemical Composition of Surfaces of CdSe Quantum Dots Synthesized with Trioctylphosphine Oxide (TOPO), J. Phys. Chem. C 2010, 114, 89-906. (link)

2. Knowles, K. E.; Tice, D. B.; McArthur, E. A.; Solomon, G. C.; Weiss, E. A. Chemical Control of the Photoluminescence of CdSe Quantum Dot-Organic Complexes with a Series of Para-Substituted Aniline Ligands, J. Am. Chem. Soc. 2010, 132, 1041-1050. (link)

From undergraduate research at the University of Rochester

1. Du, P.; Knowles, K.; Eisenberg, R. A Homogeneous System for the Photogeneration of Hydrogen from Water Based on a Platinum(II) Terpyridyl Acetylide Chromophore and a Molecular Cobalt Catalyst, J. Am. Chem. Soc.  2008, 130, 12576-12577. (link)