skip to main content

Title: Self-assembled two-dimensional nanoporous molecular arrays and photoinduced polymerization of 4-bromo-4′-hydroxybiphenyl on Ag(111)

Self-assembled two-dimensional molecular arrays and photoinduced polymerization of 4-bromo-4′-hydroxybiphenyl on Ag(111) were studied using low-temperature scanning tunneling microscopy combined with density functional theory calculations. Square-like self-assembled structures of 4-bromo-4′-hydroxybiphenyl stabilized by intermolecular hydrogen and halogen bonds were transformed into hexagonal nanopores of biphenyl biradicals by 266 nm UV laser irradiation at 80 K. The biradicals further coupled to each other and formed covalently linked polyphenylene polymer chains at room temperature.
Authors:
;  [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [3] ;  [1] ;  [2] ;  [5] ;  [6] ;  [1] ;  [2] ;  [5] ;  [2]
  1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore)
  2. (Singapore)
  3. (China)
  4. Singapore-Peking University Research Centre for a Sustainable Low-Carbon Future, 1 CREATE Way, #15-01, CREATE Tower, Singapore 138602 (Singapore)
  5. (Suzhou) Research Institute, Suzhou (China)
  6. Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542 (Singapore)
Publication Date:
OSTI Identifier:
22415472
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 142; Journal Issue: 10; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BIPHENYL; COVALENCE; DENSITY FUNCTIONAL METHOD; HALOGENS; HYDROGEN; HYDROXIDES; LASER RADIATION; ORGANIC POLYMERS; POLYMERIZATION; RADICALS; SCANNING TUNNELING MICROSCOPY; TEMPERATURE DEPENDENCE; TWO-DIMENSIONAL CALCULATIONS; TWO-DIMENSIONAL SYSTEMS