title: Photoinduced charge transfer within polyaniline-encapsulated quantum dots decorated on graphene.
abstract: A new method to enhance the stability of quantum dots (QDs) in aqueous solution by encapsulating them with conducting polymer polyaniline was reported. The polyaniline-encapsulated QDs were then decorated onto graphene through π-π interactions between graphene and conjugated polymer shell of QDs, forming stable polyaniline/QD/graphene hybrid. A testing electronic device was fabricated using the hybrid in order to investigate the photoinduced charge transfer between graphene and encapsulated QDs within the hybrid. The charge transfer mechanism was explored through cyclic voltammetry and spectroscopic studies. The hybrid shows a clear response to the laser irradiation, presenting a great advantage for further applications in optoelectronic devices.
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371.
authors.forename: Kim Truc
authors.initials: KT
authors.lastname: Nguyen
authors.forename: Dehui
authors.initials: D
authors.lastname: Li
authors.forename: Parijat
authors.initials: P
authors.lastname: Borah
authors.forename: Xing
authors.initials: X
authors.lastname: Ma
authors.forename: Zhaona
authors.initials: Z
authors.lastname: Liu
authors.forename: Liangliang
authors.initials: L
authors.lastname: Zhu
authors.forename: George
authors.initials: G
authors.lastname: Grüner
authors.forename: Qihua
authors.initials: Q
authors.lastname: Xiong
authors.forename: Yanli
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D007834:Lasers; D011108:Polymers / Q000737:chemistry; D045663:Quantum Dots / Q000737:chemistry / Q000528:radiation effects; D012996:Solutions; D014867:Water / Q000737:chemistry
chemical_list: D000814:Aniline Compounds; D011108:Polymers; D012996:Solutions; C416807:polyaniline; D014867:Water; D006108:Graphite