title: Luminescent Polymer Composite Films Containing Coal-Derived Graphene Quantum Dots.
abstract: Luminescent polymer composite materials, based on poly(vinyl alcohol) (PVA), as a matrix polymer and graphene quantum dots (GQDs) derived from coal, were prepared by casting from aqueous solutions. The coal-derived GQDs impart fluorescent properties to the polymer matrix, and the fabricated composite films exhibit solid state fluorescence. Optical, thermal, and fluorescent properties of the PVA/GQD nanocomposites have been studied. High optical transparency of the composite films (78 to 91%) and excellent dispersion of the nanoparticles are observed at GQD concentrations from 1 to 5 wt %. The maximum intensity of materials photoluminescence has been achieved at 10 wt % GQD content. These materials could be used in light emitting diodes (LEDs), flexible electronic displays, and other optoelectronic applications.
authors.affiliation: Department of Chemistry, ∥Department of Materials Science and NanoEngineering, and †Smalley Institute for Nanoscale Science and Technology, Rice University , 6100 Main Street, Houston, Texas 77005, United States.
authors.forename: Anton
authors.initials: A
authors.lastname: Kovalchuk
authors.affiliation: Department of Chemistry, ∥Department of Materials Science and NanoEngineering, and †Smalley Institute for Nanoscale Science and Technology, Rice University , 6100 Main Street, Houston, Texas 77005, United States.
authors.forename: Kewei
authors.initials: K
authors.lastname: Huang
authors.affiliation: Department of Chemistry, ∥Department of Materials Science and NanoEngineering, and †Smalley Institute for Nanoscale Science and Technology, Rice University , 6100 Main Street, Houston, Texas 77005, United States.
authors.forename: Changsheng
authors.initials: C
authors.lastname: Xiang
authors.affiliation: Department of Chemistry, ∥Department of Materials Science and NanoEngineering, and †Smalley Institute for Nanoscale Science and Technology, Rice University , 6100 Main Street, Houston, Texas 77005, United States.
authors.forename: Angel A
authors.initials: AA
authors.lastname: Martí
authors.affiliation: Department of Chemistry, ∥Department of Materials Science and NanoEngineering, and †Smalley Institute for Nanoscale Science and Technology, Rice University , 6100 Main Street, Houston, Texas 77005, United States.
authors.forename: James M
authors.initials: JM
authors.lastname: Tour
keywords: fluorescent polymer composites; graphene quantum dots; light emitting diodes; luminescent polymer composites; nanocomposites; poly(vinyl alcohol)