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Bobby G. Sumpter
Researcher at Oak Ridge National Laboratory
Publications - 652
Citations - 28014
Bobby G. Sumpter is an academic researcher from Oak Ridge National Laboratory. The author has contributed to research in topics: Polymer & Graphene. The author has an hindex of 60, co-authored 619 publications receiving 23583 citations. Previous affiliations of Bobby G. Sumpter include University of Florida & Cornell University.
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Assessing the Predictive Power of Density Functional Theory in Finite-Temperature Hydrogen Adsorption/Desorption Thermodynamics
Yungok Ihm,Changwon Park,Jacek Jakowski,James R. Morris,Ji Hoon Shim,Yong-Hyun Kim,Bobby G. Sumpter,Mina Yoon +7 more
TL;DR: In this article, the authors analyzed the trustworthiness of DFT results, meaning the range of expected variations in the DFT prediction of experimentally measurable quantities, in characterizing the gas adsorption/desorption thermodynamics.
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Feature Article: Experimental Design and Molecular Modeling of Novel Graft Copolymers
TL;DR: The tensile properties of tetra-functional multigraft copolymers have been shown to have surprising high strain at break (~2100%), about double that of commercial thermoplastic elastomers such as Kraton as discussed by the authors.
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Molecular Dynamics Simulation of Collinear Polymer Nanoparticle Collisions: Reaction and Scattering
TL;DR: In this paper, the authors studied the transition between sticking and reactive scattering trajectories of polyethylene nanoparticles in collinear collisions and showed that at all but extremely high velocities, particles undergo rapid and irreversible energy transfer from the relative translational coordinate into other internal coordinates, resulting in dimerization of the polymer particles.
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Thermoreversible Morphology and Conductivity of a Conjugated Polymer Network Embedded in Block Copolymer Self-Assemblies.
Youngkyu Han,Jan-Michael Y. Carrillo,Zhe Zhang,Zhe Zhang,Yunchao Li,Kunlun Hong,Bobby G. Sumpter,Michael Ohl,Mariappan Parans Paranthaman,Gregory S. Smith,Changwoo Do +10 more
TL;DR: This study shows promise for enabling more flexibility in processing and utilizing water-soluble conjugated polymers in aqueous solutions for self-assembly based fabrication of stimuli-responsive nanostructures and sensory materials.
Journal Article
Ab initio investigation of the cyclodehydrogenation process for polyanthrylene transformation to graphene nanoribbons
Zhongcan Xiao,Chuanxu Ma,Wenchang Lu,Jingsong Huang,Liangbo Liang,Kunlun Hong,An-Ping Li,Bobby G. Sumpter,Jerzy Bernholc +8 more
TL;DR: In this paper, the energy profiles of various reaction pathways using density functional theory and the nudged elastic band method were investigated for cyclodehydrogenation of a 7-atom-wide armchair GNR made from 10,10′-dibromo-9,9′-bianthryl (DBBA) precursors on metal substrates through dehalogenation/polymerization followed by cyclode hydrogenation.