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Lee, Geunsik
Electronic Structure and Transport in Condensed Materials
Research Interests
  • open quantum system, non-equilibrium electron transport
  • electron correlation, dynamical mean field theory
  • 2D materials, metal complexes


Facile room-temperature self-assembly of extended cation-free guanine-quartet network on Mo-doped Au(111) surface

DC Field Value Language Ghassami, Amirreza ko Oleiki, Elham ko Kim, Dong Yeon ko Shin, Hyung-Joon ko Lee, Geunsik ko Kim, Kwang S. ko 2021-06-10T07:53:38Z - 2021-06-08 ko 2021-07 ko
dc.identifier.citation NANOSCALE ADVANCES, v.3, no.13, pp.3867 - 3874 ko
dc.identifier.issn 2516-0230 ko
dc.identifier.uri -
dc.description.abstract Guanine-quadruplex, consisting of several stacked guanine-quartets (GQs), has emerged as an important category of novel molecular targets with applications from nanoelectronic devices to anticancer drugs. Incorporation of metal cations into a GQ structure is utilized to form stable G-quadruplexes, while formation of a cation-free GQ network has been challenging. Here we report the room temperature (RT) molecular self-assembly of extended pristine GQ networks on an Au(111) surface. An implanted molybdenum atom within the Au(111) surface is used to nucleate and stabilize the cation-free GQ network. Additionally, decoration of the Au(111) surface with 7-armchair graphene nanoribbons (7-AGNRs) enhances the GQ domain size by suppressing the influence of the disordered phase nucleated from Au step edges. Scanning tunneling microscopy/spectroscopy (STM/STS) and density functional theory (DFT) calculations confirm the formation of GQ networks and unravel the nucleation and growth mechanism. Our work, utilizing a hetero-atom doped substrate, provides a facile approach to enhance the stability and domain size of the GQ self-assembly, which would be applicable for other molecular structures. ko
dc.language 영어 ko
dc.publisher ROYAL SOC CHEMISTRY ko
dc.title Facile room-temperature self-assembly of extended cation-free guanine-quartet network on Mo-doped Au(111) surface ko
dc.type ARTICLE ko
dc.identifier.wosid 000654368900001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1039/d1na00235j ko
dc.identifier.url!divAbstract ko
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