21941-96-8Relevant academic research and scientific papers
Molecular self-assembly of rigid-rod alkynyl chromophores on inorganic oxide surfaces
Yam, Chi Ming,Dickie, Adam,Malkhasian, Aramice,Kakkar, Ashok K.,Whitehead
, p. 1766 - 1778 (2007/10/03)
The hydrolysis of surface-bound basic tin-amide moieties with acidic protons of alkynyl chromophores leads to molecular self-assembly of a variety of rigid-rod alkynes on inorganic oxide surfaces such as glass, quartz, and single crystal silicon. Characterization of these newly developed thin films was achieved by contact-angle goniometry, FTIR-ATR, ellipsometry, and X-ray photoelectron spectroscopy, which indicate that these thin films are densely packed. Comparative molecular mechanics modeling studies on unbound and chemisorbed -Sn-C≡C-H monomer, dimer, trimer, and a 12 x 12 (144 molecule) model substrate, suggest that surface anchoring of Sn-alkynyl units is essential for highly ordered thin-film structures that can effect topochemical polymerization. Preliminary MO calculations on a 4 x 4 model show conjugated molecular orbitals through the system.
