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Graphene wrinkle effects on molecular resonance states

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Show simple item record Nirmalraj, Peter N. Thodkar, Kishan Guerin, Sarah Calame, Michel Thompson, Damien 2018-04-04T11:25:46Z 2018-04-04T11:25:46Z 2018
dc.description peer-reviewed en_US
dc.description.abstract Wrinkles are a unique class of surface corrugations present over diverse length scales from Kinneyia-type wrinkles in Archean-era sedimentary fossils to nanoscopic crinkling in two-dimensional crystals. Lately, the role of wrinkles on graphene has been subject to debate as devices based on graphene progress towards commercialization. While the topology and electronic structure of graphene wrinkles is known, data on wrinkle geometrical effects on molecular adsorption patterns and resonance states is lacking. Here, we report molecular superstructures and enhancement of free-molecular electronic states of pentacene on grapheme wrinkles. A new trend is observed where the pentacene energy gap scales with wrinkle height, as wrinkles taller than 2 nm significantly screen metal induced hybridization. Combined with density functional theory calculations, the impact of wrinkles in tuning molecular growth modes and electronic structure is clarified at room-temperature. These results suggest the need to rethink wrinkle engineering in modular devices based on graphene and related 2D materials interfacing with electronically active molecules. en_US
dc.language.iso eng en_US
dc.publisher Nature Publishing Group en_US
dc.relation.ispartofseries npj 2D Materials and Applications;2:8
dc.subject wrinkles en_US
dc.subject molecular en_US
dc.subject resonance en_US
dc.title Graphene wrinkle effects on molecular resonance states en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1038/s41699-018-0053-7
dc.contributor.sponsor Swiss Federal Institute of Metrology (metas) via the EMRP project GraphOhm (SIB51) and the EC FP7-ITN MOLESCO en_US
dc.contributor.sponsor SFI en_US
dc.relation.projectid 606728 en_US
dc.relation.projectid 15/CDA/3491 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

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