| The renaissance of multiferroics has yielded a deeper understanding of magnetoelectric coupling of inorganic single phase and composites. In this talk, I will report organic charge-transfer magnetoelectrics, which exhibit external field controlled magnetic, ferroelectric and microwave response. The charge-transfer controlled magnetoelectric properties result from the magnetic field tunable triplet exciton, which has been validated by the dynamic polaron-bipolaron transition model. In addition, the temperature dependent dielectric discontinuity and electric field dependent polarization confirms room temperature ferroelectricity of crystalline charge-transfer organic magnetoelectrics due to the triplet exciton, which allows the tunability of polarization by the photoexcitation. Furthermore, organic magnetoelectrics exhibit electric field controlled spin resonance and magnetic field sensing behaviors, which open up the potential of charge-transfer complex system where the magnetism and optoelectronics interact.
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| Prof. Shenqiang Ren obtained his B.S. degree in Materials Science at the Nanjing University of Aeronautics and Astronautics, Nanjing, P.R. China in 2004. He received his Ph.D. degree in Materials Science at the University of Maryland, College Park (08/2005-09/2009), and then served as a postdoc fellow in Materials Science and Engineering at Massachusetts Institute of Technology (MIT, 09/2009-06/2011). He started his independent research career as assistant professor at the University of Kansas in August 2011. After three years, he receives an early promotion to tenured associate professor at the University of Kansas, working on the renewable and emerging nanomaterials for critical-energy applications. He is named as “Rising Star” and will join Temple University as Associate Professor in July 2015.
He received 2015 National Science Foundation – CAREER Award, 2014 Army Research Office – Young Investigator Award (DOD-YIP), 2014 RSC Emerging Investigator – Journal of Material Chemistry, 2013 NSF Kansas-EPSCOR First Award, 2013 Air Force Summer Faculty Fellowship, 2012 KU New Faculty General Research Fund, 2009 China’s National Award for Outstanding Graduate Students Abroad, 2009 Dean's Doctoral Research Award (First Prize) and Distinguished Doctoral Dissertation Award at University of Maryland, College Park.
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