title: Temperature-controlled self-assembling structure with selective guest-recognition at the liquid-solid interface.
abstract: We investigate the influence of temperature on the self-assembly of 2,6,11-tricarboxydecyloxy-3,7,10-triundecyloxy triphenylene (asym-TTT) adsorbed on HOPG using scanning tunneling microscopy (STM) at the liquid/solid interface. We show that the packing structures of 2D self-assembled asym-TTT can be precisely tuned by adjusting the substrate temperature. The temperature change from 20 °C to 35 °C induces two phase transitions and increment in the packing density from 0.161 to 0.179 molecules per nm(2). The density-functional theory (DFT) calculations reveal that their interaction energies are similar. In particular, the experimental findings further illustrate the preferential adsorption of guest molecules, such as phthalocyanine, only in the domain of more close packing structures.
authors.affiliation: Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P. R. China.
authors.forename: Yibao
authors.initials: Y
authors.lastname: Li
authors.forename: Chunhua
authors.initials: C
authors.lastname: Liu
authors.forename: Yunzhi
authors.initials: Y
authors.lastname: Xie
authors.forename: Xiaokang
authors.initials: X
authors.lastname: Li
authors.forename: Xun
authors.initials: X
authors.lastname: Li
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Fan
authors.forename: Ke
authors.initials: K
authors.lastname: Deng
authors.forename: Qingdao
authors.initials: Q
authors.lastname: Zeng
authors.forename: Chen
authors.initials: C
authors.lastname: Wang
mesh_terms: D000327:Adsorption; D002911:Chrysenes / Q000737:chemistry*; D007211:Indoles / Q000302:isolation & purification; D054833:Isoindoles; D016252:Microscopy, Scanning Tunneling; D008958:Models, Molecular; D049329:Nanostructures / Q000737:chemistry / Q000648:ultrastructure; D044367:Phase Transition; D013499:Surface Properties; D013696:Temperature
chemical_list: D002911:Chrysenes; D007211:Indoles; D054833:Isoindoles; C009590:triphenylene; C013647:phthalocyanine