title: Direct observation of quantum-confined graphene-like states and novel hybrid states in graphene oxide by transient spectroscopy.
abstract: Quantum-confined graphene-like electronic states are directly observed in graphene oxide and photothermally reduced graphene oxide via transient spectroscopy. An unexpected novel hybrid state arising from amorphous carbon-like peripheral structure with high sp(3) /sp(2) carbon ratio in close vicinity of confined graphene-like states is found commonly existent in various carbon nanomaterials, including graphene oxide, graphene quantum dots, and carbon dots.
authors.affiliation: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Hai-Yu
authors.initials: HY
authors.lastname: Wang
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.forename: Shou-Jun
authors.initials: SJ
authors.lastname: Zhu
authors.forename: Yong-Lai
authors.initials: YL
authors.lastname: Zhang
authors.forename: Jun-Hu
authors.initials: JH
authors.lastname: Zhang
authors.forename: Qi-Dai
authors.initials: QD
authors.lastname: Chen
authors.forename: Wei
authors.initials: W
authors.lastname: Han
authors.forename: Huai-Liang
authors.initials: HL
authors.lastname: Xu
authors.forename: Bai
authors.initials: B
authors.lastname: Yang
authors.forename: Hong-Bo
authors.initials: HB
authors.lastname: Sun
mesh_terms: D002244:Carbon / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D045663:Quantum Dots / Q000737:chemistry*; D013997:Time Factors; D014466:Ultraviolet Rays
chemical_list: D010087:Oxides; D002244:Carbon; D006108:Graphite
keywords: confined sp2 states; graphene oxide; hybrid states; insulator-to-semiconductor transition; reduced graphene oxide