Surface chemistry and structures of 1,4-phenylene diisocyanide on gold films from solution

被引:9
作者
Abuflaha, Rasha
Olson, Dustin
Bennett, Dennis W.
Tysoe, Wilfred T. [1 ]
机构
[1] Univ Wisconsin, Dept Chem & Biochem, Milwaukee, WI 53211 USA
关键词
1,4-Phenylene diisocyanide; Gold; Reflection-absorption infrared spectroscopy; Conductivity; Self-assembly; ARYL ISOCYANIDES; METAL-SURFACES; ADSORPTION; AU(111); CATALYSIS; ADATOMS; ALKYL;
D O I
10.1016/j.susc.2016.01.029
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The adsorption of 1,4-phenylene diisocyanide (PDI) is studied on gold films as a function of PDI exposure from benzene solution by a combination of attenuated total internal reflection infrared (ATR-IR) spectroscopy and conductivity measurements. The infrared spectrum found for low PDI doses exhibits a single isocyanide vibrational peak consistent with the formation of -(Au-PDI)- oligomer chains that have been identified previously on a Au(111) surface dosed in ultrahigh vacuum. Larger solution doses cause the isocyanide peaks to split into two, with the lower-frequency vibrations corresponding to a free isocyanide mode, indicating the formation of a perpendicular, vertically bonded PDI molecule. This observation also rationalizes the apparent disparity between studies of the chemistry of PDI on gold in ultrahigh vacuum and with solution dosing. Since it has been shown previously that the -(Au-PDI)- oligomer chains are capable of providing conductive linkages between gold nanoparticles on an insulating mica substrate, it was proposed that higher PDI doses from solution should cause a decrease in conductivity due to chain disruption. This effect was found experimentally, thereby providing corroborative evidence for the above conclusions. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:56 / 59
页数:4
相关论文
共 29 条
  • [1] ABELES B, 1975, ADV PHYS, V24, P407, DOI 10.1080/00018737500101431
  • [2] Isocyanide Ligands Adsorbed on Metal Surfaces: Applications in Catalysis, Nanochemistry, and Molecular Electronics
    Angelici, Robert J.
    Lazar, Mihaela
    [J]. INORGANIC CHEMISTRY, 2008, 47 (20) : 9155 - 9165
  • [3] Organometallic chemistry and catalysis on gold metal surfaces
    Angelici, Robert J.
    [J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2008, 693 (05) : 847 - 856
  • [4] Creation of Low-Coordination Gold Sites on Au(111) Surface by 1,4-phenylene Diisocyanide Adsorption
    Boscoboinik, Jorge
    Kestell, John
    Garvey, Michael
    Weinert, Michael
    Tysoe, Wilfred T.
    [J]. TOPICS IN CATALYSIS, 2011, 54 (1-4) : 20 - 25
  • [5] One-dimensional supramolecular surface structures: 1,4-diisocyanobenzene on Au(111) surfaces
    Boscoboinik, Jorge A.
    Calaza, Florencia C.
    Habeeb, Zeesham
    Bennett, Dennis W.
    Stacchiola, Dario J.
    Purino, Martin A.
    Tysoe, Wilfred T.
    [J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2010, 12 (37) : 11624 - 11629
  • [6] Understanding and Controlling the 1,4-Phenylene Diisocyanide-Gold Oligomer Formation Pathways
    Garvey, Michael
    Kestell, John
    Abuflaha, Rasha
    Bennett, Dennis W.
    Henkelman, Graeme
    Tysoe, Wilfred T.
    [J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2014, 118 (36) : 20899 - 20907
  • [7] REFLECTION METHOD FOR OBTAINING INFRARED SPECTRUM OF A THIN LAYER ON A METAL SURFACE
    GREENLER, RG
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1969, 50 (05) : 1963 - &
  • [9] Adsorption of 1,4-phenylene diisocyanide on silver investigated by infrared and Raman spectroscopy
    Han, HS
    Han, SW
    Joo, SW
    Kim, K
    [J]. LANGMUIR, 1999, 15 (20) : 6868 - 6874
  • [10] Adsorption of diisocyanides on gold
    Henderson, JI
    Feng, S
    Bein, T
    Kubiak, CP
    [J]. LANGMUIR, 2000, 16 (15) : 6183 - 6187