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Hayden A. Evans, Ph.D Candidate



Ph.D candidate, Department of Chemistry and Biochemistry, UCSB, 2014 - Present

Research group of Ram Seshadri:

B.S. Chemistry, University of Georgia, 2012

Research group of Prof. Tina Salguero


What makes chemistry exciting is the chance to make something new! This is the heart of my graduate career. My research focuses on uncovering unseen hybrid inorganic/organic materials which incorporate novel organic cations into heavy metal halide complexes (Pb-I, Sn-I), as well as studying the stucture-property relationships of new hybrid vacancy ordered double perovskite materials (Pt-I, Au-I, Te-I).


  1. Evans, H. A.; Fabini, D. H.; Andrews, J. L.; Koerner, M.; Preefer, M. B.; Wu, G.; Wudl, F.; Cheetham, A. K.; Seshadri, R. Hydrogen Bonding Controls Structural Evolution in Perovskite-Related Hybrid Platinum (IV) Iodides, submitted
  2. Brook, G.; Franco, N.; Cherkinsky, A.; Acevedo, A.; Fiore, D.; Pope, T.; Weimar, R.; Neher, G.; Evans, H. A.; Salguero, T. Pigments, Binders, and Ages of Rock Art at Viuda Quenzana, Santa Cruz, Patagonia (Argentina) J. Archaeol. Sci. Rep. 2018, 21, 47 - 63. [doi]
  3. Lewi T.; Evans, H. A.; Butakov, N. A.; Schuller, J. A. Thermo-optically Reconfigurable PbTe Mie Resonator Meta-atoms, Nano Lett., 2017, 17, 3940 - 3945 [doi]
  4. Labram, J.*; Venkatesan, N.*; Takacs, C.; Evans, H. A.; Perry, E.; Wudl, F.; Chabinyc, M. Charge Transport in a Two-Dimensional Hybrid Metal Halide Thiocyanate Compound, J. Phys. Chem. Lett, 2017, 5, 5930 - 5938 (*equal contribution) [doi]
  5. Evans, H. A.; Schueller, E. C.; Smock, S. R.; Wu, G.; Seshadri, R.; Wudl, F. Perovskite-related Hybrid Noble metal Iodides: Formamidinium Platinum Iodide [(FA)2PtIVI6] and Mixed-valence Methylammonium Gold Iodide [(MA)2AuIAuIIII6], Inorg. Chim. Acta., 2017, 468, 280 - 284 (invited) [doi]
  6. Evans, H. A.; Labram, J. G.; Smock, S. R.; Wu, G.; Chabinyc, M. L.; Seshadri, R.; Wudl, F. Mono and Mixed-Valence Tetrathiafulvalene Semiconductors (TTF)BiI4 and (TTF)4BiI6 with 1D and 0D Bismuth-Iodide Networks, Inorg. Chem., 2016, 56, 395 - 401 [doi]
  7. Fabini, D. H.; Labram, J. G.; Lehner, A. J.; Bechtel, J. S.; Evans, H. A.; Van der Ven, A.; Wudl, F.; Chabinyc, M. L.; Seshadri, R. Main-group halide semiconductors derived from perovskite: Distinguishing chemical, structural, and electronic aspects, Inorg. Chem., 2016, 56, 11 - 25 (invited) [doi]
  8. Fabini, D. H.(*); Laurita, G.(*); Bechtel, J. S.; Stoumpos, C. C.; Evans, H. A.; Van der Ven, A.; Kanatzidis, M. G.; Seshadri, R. Dynamic stereochemical activity of the Sn2+ lone pair in perovskite CsSnBr3, J. Am. Chem. Soc. 2016, 138, 11820 – 11832. (*equal contribution) [doi]
  9. Evans, H. A.; Lehner, A. J.; Labram, J. G.; Fabini, D. H.; Barreda, O.; Smock, S. R.; Wu, G.; Chabinyc, M. L.; Seshadri, R.; Wudl, F. (TTF)Pb2I5: a Radical Cation-Stabilized Hybrid Lead Iodide with Synergistic Optoelectronic Signatures, Chem. Mater. 2016, 28, 3607 – 3611. [doi]
  10. Sheri, M.; Evans, H. A.; Doan-Nguyen, V. T.; Labram, J. G.; Wu, G.; Chabinyc, M. L.; Seshadri, R.; Wudl, F. Infinite Polyiodide I Chains in the Pyrroloperylene-Iodine Complex: Insights into the Starch-Iodine and Perylene-Iodine Complexes, Angew. Chem. Int. Ed. 2016, 55, 8032 – 8035. [doi] C&EN report
  11. Fabini, D. H.; Hogan, T.; Evans, H. A.; Stoumpos, C. C.; Kanatzidis, M. G.; Seshadri, R. Dielectric and Thermodynamic Signatures of Low Temperature Glassy Dynamics in the Hybrid Perovskites CH3NH3PbI3 and HC(NH2)2PbI3, J. Phys. Chem. Lett. 2016, 7, 376 – 381. [doi]
  12. Lehner, A. J.; Fabini, D. H.; Evans, H. A.; Hébert, C.-A.; Smock, S. R.; Hu, J.; Wang, H.; Zwanziger, J. W.; Chabinyc, M. L.; Seshadri, R. Crystal and Electronic Structures of Complex Bismuth Iodides A3Bi2I9 (A= K, Rb, Cs) Related to Perovskite: Aiding the Rational Design of Photovoltaics, Chem. Mater. 2015, 27 , 7137 – 7148.
  13. [doi]
  14. Labram, J. G.; Fabini, D. H.; Perry, E. E.; Lehner, A. J.; Wang, H.; Glaudell, A. M.; Wu, G.; Evans, H.; Buck, D.; Cotta, R.; Echegoyen, L.; Wudl, F.; Seshadri, R.; Chabinyc, M. L. Temperature-Dependent Polarization in Field-Effect Transport and Photovoltaic Measurements of Methylammonium Lead Iodide, J. Phys. Chem. Lett. 2015, 6, 3565 – 3571. [doi]

About me

I was born in South Africa, am a British national, and moved to Georgia in 2001. I naturalized in 2015. My comedic muse is Larry David.


Roald Hoffmann : Molecular Beauty


Hayden A. Evans, Ph.D Candidate
Materials Research Laboratory
University of California, Santa Barbara CA 93106-5121
email: hevans@mrl.ucsb.edu