Yifei Liu
Yifei Liu, Ph.D.
Senior Scientist
Polymer Science & Materials Chemistry
  • Shanghai

Dr. Liu’s area of expertise is in organic/organometallic chemistry and materials science, with an emphasis on organic electronics. She specializes in molecule design/synthesis and device design/fabrication/testing of organic light emitting devices (OLEDs). She has experience with synthesis of fluorescent and phosphorescent materials as well as extensive knowledge of the factors that influence OLED performance, ranging from molecular level interactions to final commercial product operations. Dr. Liu also specializes in the materials chemistry of information storage systems, specifically molecular wires and switches.

Dr. Liu’s material characterization skills cover a wide variety of techniques including mass spectroscopy (HPLC-MS, GC-MS, MALDI-TOF), X-ray crystallographic analysis (single crystal diffraction, powder diffraction), spectrofluorimetry, fluorescence and phosphorescence lifetime measurement, quantum yield and efficiency measurement, spectroscopic ellipsometry, liquid nuclear magnetic resonance (NMR), UV-Visible spectroscopy (UV-Vis), electrochemistry (CV, DPV, bulk electrolysis), spectroelectrochemistry (UV-Vis-NIR characterization), and Fourier transform infrared (FTIR) spectroscopy. 

Additionally, Dr. Liu has a strong synthesis background encompassing organic synthesis (inert atmosphere, Schlenk techniques), organometallic synthesis (Ru, Os, and Ir chemistry, Al, and Zn chemistry), and nonmetallic inorganic material synthesis (porcelain enamel coatings). She has hands-on experience using high vacuum zone sublimation, high vacuum deposition, organic vapor phase deposition of organics and metals, and solution processes to fabricate devices.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Chemistry, University of Southern California, 2014
  • M.S., Catalysis and Molecular Chemistry, University of Rennes 1, France, 2008
  • B.S., Materials Science and Engineering, Donghua University, China, 2006
  • The University of Southern California Fellowship, 2008–2014

    Department of Chemistry Fellowship, University of Southern California, 2010–2014

LANGUAGES

  • Mandarin Chinese
  • French

Publications

Liu Y, Djurovich PI, Thompson ME. Synthesis and photophysical study of bispincer osmium complex. Polyhedron 2014; 84:136–143.

Liu Y, Ndiaye CM, Lagrost C, Costuas K, Choua S, Turek P, Norel L, Rigaut S. Diarylethene-containing carbon-rich ruthenium organometallics. Tuning of electrochromism. Inorganic Chemistry 2014; 53:8172–8188.

Liping T, Jun W, Huichun Q, Weizhong J, Yifei L, Zhen L, Dong L, Xiaoying C, Gang W. Study of the transitional layer structure of Gas-Gas heater enamels. Glass & Enamels 2009; 2:10–13.

Liu Y, Lagrost C, Costuas K, Noureddine Tchouar, Le Bozec H, Rigaut S. Multifunctional switches with carbon-rich ruthenium and diarylethene units. Chemical Communications 2008; 6117 6119.

Baoning Z, Weizhong J, Yifei L, Liyun C. The preparation and light catalyzing properties of TiO2 film on the surface of enamel. Glass & Enamel 2005; 33(4):47–50.

Representative Presentations


Thompson ME, Krylova V, Liu Y. Efficient electroluminescence from heavy (Ir) and not so heavy (Cu) metal complexes. Optics+Photonics, San Diego, CA, August 2013.

Liu Y, Djurovich PI, Thompson ME. Synthesis and photophysical study of Ir(III) complexes with diphenylphosphinoaryl cyclometalates. 20th International Symposium on the Photophysics and Photochemistry of Coordination Compounds (ISPPCC), Traverse City, MI, July 2013.

Pikov V, Romanenko S, Lin M-Y, Weitz A, Thompson M, Liu Y, Chow RH. Iridium-based nanoswitch for light-activated cellular prosthesis. Arnold and Mabel Beckman Initiative for Macular Research (BIMR). Irvine, CA, January 2013.

Liu Y, Djurovich PI, Thompson ME. Synthesis of bispincer osmium complex. Division of Inorganic Chemistry, 243rd ACS National Meeting, San Diego, CA, Spring 2012.

Liu Y, Lagrost C, Costuas K, Le Bozec H, Rigaut S. Ruthenium carbon-rich complexes for multifunctional organometallic switches. International Conference of Organometallic Chemistry, Rennes, France, July 2008.

Patents

US Patent: Ir(III) complexes with phosphinoaryl cyclometalated ligands. Submitted July 2013 (Thompson ME, Liu Y, Djurovich PI).

Professional Affiliations

American Chemical Society—ACS

Materials Research Society—MRS

Additional Information

Additional Education Training

Molecular Modeling: Schrödinger 2013 Materials Science Suite, Gaussian 03/09, SpartanModel

Software packages: MS Office, OriginLab, ChemBioDraw, Chemcraft, Mercury, Diamond (Crystal and Molecular Structure Visualization), SHLEX, AutoCAD, 3DS MAX

Diamonds and Diamond Grading Certification (GIA)

Peer Reviewer

The Journal of Physical Chemistry Letters

Journal of the American Chemical Society

Chemistry – A European Journal

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Chemistry, University of Southern California, 2014
  • M.S., Catalysis and Molecular Chemistry, University of Rennes 1, France, 2008
  • B.S., Materials Science and Engineering, Donghua University, China, 2006
  • The University of Southern California Fellowship, 2008–2014

    Department of Chemistry Fellowship, University of Southern California, 2010–2014

LANGUAGES

  • Mandarin Chinese
  • French