title: Molecular tuning of amino acids to form two-dimensional molecular networks driven by conformational preorganization.
abstract: We investigated the self-assembly of rationally designed γ-Phe on Au(111) using scanning tunneling microscopy with density functional theory calculations. In contrast to α-Phe, γ-Phe self-assembled into ring-shaped clusters (RSCs) and two-dimensional (2D) molecular domains. The better self-association tendency was attributed to conformational preorganization through intramolecular interaction between ammonium and carboxylate functionalities.
authors.affiliation: Department of Chemistry, Molecular-Level Interface Research Center, KAIST, Daejeon 305-701, Republic of Korea. hee-seung_lee@kaist.ac.kr and Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea.
authors.forename: Young-Sang
authors.initials: YS
authors.lastname: Youn
authors.affiliation: Department of Chemistry, Molecular-Level Interface Research Center, KAIST, Daejeon 305-701, Republic of Korea. hee-seung_lee@kaist.ac.kr.
authors.forename: Aram
authors.initials: A
authors.lastname: Jeon
authors.affiliation: Division of Science Education and Institute of Fusion Science, Chonbuk National University, Jeonbuk-do 54896, Republic of Korea. dhk201@jbnu.ac.kr.
authors.forename: Do Hwan
authors.initials: DH
authors.lastname: Kim
authors.affiliation: Department of Chemistry, Molecular-Level Interface Research Center, KAIST, Daejeon 305-701, Republic of Korea. hee-seung_lee@kaist.ac.kr.
authors.forename: Hee-Seung
authors.initials: HS
authors.lastname: Lee
authors.affiliation: Department of Chemistry, Molecular-Level Interface Research Center, KAIST, Daejeon 305-701, Republic of Korea. hee-seung_lee@kaist.ac.kr.
authors.forename: Sehun
authors.initials: S
authors.lastname: Kim
mesh_terms: D020148:Butyric Acid / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D006860:Hydrogen Bonding; D008958:Models, Molecular; D008968:Molecular Conformation; D050607:Organogold Compounds / Q000737:chemistry*
chemical_list: D050607:Organogold Compounds; D020148:Butyric Acid; D006046:Gold