Highlights

. Diversified research background with extensive experience in the

synthesis and characterization of polymeric materials (Conducting

polymers, PS, PMMA, PCL, PLA, PEO, PPG, PEG, Polyester, Polyether,

Polyols, Polyacrylate, Polystyrene, fluorinated polymers and block

copolymers, et al)

. Adept at many characterization techniques including nuclear magnetic

resonance spectroscopy (1D and 2D NMR, 13C and 1H NMR), gel-permeation

chromatography (GPC), SEC, matrix-assisted laser desorption/ionization

time-of-flight (MALDI-TOF), Infrared spectroscopy (IR), differential

scanning calorimetry (DSC), thermal gravimetric analysis (TGA), Dynamic

Light Scattering (DLS), gas chromatography (GC), Absorption (UV-vis),

Photoluminescence (PL), Electrochemical characterizations including

electrochemical spectroscopy and cyclic voltammetry (CV).

. Ability to conduct many different polymerizations includes Chain-Growth,

Step-Growth, ATRP, RAFT, Ring-Opening, ROMP, GRIM, Stille-Coupling,

Suzuki-Coupling, free radical, click chemistry and so on.

. Effective communication skills that have been expanded through

interdisciplinary experiences

. Good Team player and Ability to work on multi-projects at same time and

in a fast-paced environment.

. Good Knowledge of Structure-Property relationships, Processing and

Applications of Polymeric Materials, Polymerization and Polymer

Characterization Mechanism.

WORKING Experiences

. Postdoctoral Researcher, Oak Ridge National Laboratory, Oak Ridge, TN,

01/2012-present

Project Title: Synthesis and Property Studies of novel polymeric

materials and their block copolymer materials

. Mentor: Dr. Kunlun Hong

. Postdoctoral Researcher, University of California Los Angeles, Los

Angeles, CA, 08/2010-12/2011

Project Title: Design and Synthesis of high performance polymer

materials

Mentor: Dr. Yang Yang

Education

. PhD in Chemistry, Chinese Academy of Sciences, Beijing, China, July 2010

. MS in Analytical Chemistry, University of Science and Technology Beijing,

Beijing, China, July 2007

. BS in Applied Chemistry, University of Science and Technology Beijing,

Beijing, China, July 2004

Core Competencies

. Skilled in a variety of controlled polymerization techniques including

ATRP, RAFT, Ring-opening, Grignard metathesis (GRIM), Suzuki-coupling,

Stille-coupling, free-radical, and catalyst-transfer polycondensation

. Skilled in multistep synthesis of broad kinds of organic small molecules

and polymers

. Knowledge of structure-property relationships in polymeric materials

. Strong time management and organizational skills with great attention to

detail

. Strong combined characterization skills with NMR, GPC, DSC, TGA, DLS,

SLS, GC-MS, UV-vis, PL, FT-IR, DMA, XRD, MALDI-TOF and electrochemistry

methods.

Research Experience

January 2012-Present Postdoctoral Researcher, Oak Ridge National

Laboratory

Mentor: Dr. Kunlun Hong

. Performed extensive work with conducting polymers and their block

copolymers with PS, PMMA, PCL and PEO ranging from synthesis of novel

homopolymers and block copolymers to in-depth solution properties

studies of these polymers with UV-vis, PL, DLS, TEM, DSC, TGA, AFM, and

electrochemistry methods

. Performed wide research on deuterated polymers. The effects of

deuteration on the absorption, photoluminescence, energy levels,

molecular packings, mobilities and morphologies were investigated.

. Synthesis and characterization of water-soluble polymeric materials

. Described the aggregations and phase separations of above polymers in

dichlorobenzene by using combined characterization methods of TEM, SANS

and SAXS.

August 2010-December 2011 Postdoctoral Researcher, University of

California Los Angeles,

Mentor: Prof. Yang Yang

. Performed multistep synthesis of high performance polymers, small

molecules and fullerene derivatives, and Characterized their optical

and electronic properties by employing NMR, UV-vis, PL, TEM, XRD, DSC,

TGA, GPC, and device fabrication and testing.

September 2007-July 2010 Ph. D student, Chinese Academy of Sciences

Supervisor: Dr. Yongfang Li

. Performed synthesis and characterizations of polymers for renewable

energy applications

. Conducted synthesis and characterizations of polymers with variable

structures

September 2004-July 2007 Undergraduate Student, University of Science

and Technology Beijing

Advisor: Prof. Huili Fan and Prof. Yongfang Li

. A Performed synthesis and characterizations of two-dimensional polymers

with conjugated side chains, double-cable polymers with fullerene in

the side chain.

Publications and Selected Presentations

Youjun He, Maojie Zhang, et al, "Influence of sulfur oxidation on the

absorption and electronic energy levels of poly (thienothiophene)

derivatives", J. Phys. Chem. B 2009, 113, 14981.

Letian Dou, Jingbi You, Jun Yang, Chun-chao Chen, Youjun He, Seiichiro

Murase, Tom Moriarty, Keith Emery, Gang Li, Yang Yang*, "Tandem polymer

solar cells featuring a spectrally matched low-bandgap polymer", Nature

Photonics 2012, 6, 180.

Ming Shao, Jong Keum, Jihua Chen, Youjun He, et al, "The isotopic effects

of deuteration on optoelectronic properties of conducting polymers",

Nature Communications 2014, DOI: 10.1038/ncomms4180

44 more papers with a total of over 4700 citations. 2 book chapters and 5

Chinese patents. One NSF proposal was funded.

"Removing Bi-coupling Byproduct by carefully controlling the

polymerization condition" 2013 First Postdoctoral Symposium of Oak Ridge

National Laboratory, Poster Session. Oak Ridge, TN, July 2013

Honors

. Merit Student of University of Science and Technology Beijing, 2003

. Merit Student of University of Science and Technology Beijing, 2004

. Outstanding graduate of University of Science and Technology Beijing,

2004

. Merit Graduate Student of University of Science and Technology Beijing,

2006

. Merit Graduate Student of Chinese Academy of Sciences, 2007

. Young Scientist Award of Excellence of Institute of Chemistry, Chinese

Academy of Sciences, 2008

. Director Scholarship of Institute of Chemistry, Chinese Academy of

Sciences, 2008

. Director Scholarship of Institute of Chemistry, Chinese Academy of

Sciences, 2009

. President Excellence Award of Chinese Academy of Sciences, 2010

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