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Hayden A. Evans, Ph.D Candidate

Hayden

Department of Chemistry and Biochemistry
University of California Santa Barbara

Research:

What makes chemistry exciting is the chance to make something new! This is the heart of my graduate career. I am currently focused on uncovering unseen hybrid inorganic/organic materials which incorporate novel organic cations into heavy metal halide complexes (Pb-I, Sn-I). By using inherently functional organic cations I hope to embue and amplify useful properties within these materials (stability, conductivity, light absorption).

Education

B.S. Chemistry, University of Georgia, 2012

Research Group of Prof. Tina Salguero

Publications:

  1. 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]
  2. 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]
  3. 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, accepted (invited) [doi]
  4. 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]
  5. 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]
  6. 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]
  7. 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]
  8. 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
  9. 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]
  10. 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.
  11. [doi]
  12. 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.

Links:

Ram Seshadri: website

Roald Hoffmann : Molecular Beauty

Contact:

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