scholarly journals On-surface Ullmann polymerization via intermediate organometallic networks on Ag(111)

2014 ◽  
Vol 50 (57) ◽  
pp. 7680-7682 ◽  
Author(s):  
Johanna Eichhorn ◽  
Thomas Strunskus ◽  
Atena Rastgoo-Lahrood ◽  
Debabrata Samanta ◽  
Michael Schmittel ◽  
...  
Keyword(s):  
Surface Polymerization ◽  
Ullmann Coupling

The role of organometallic intermediates during on-surface polymerization via Ullmann coupling was studied on Ag(111).

Directing on-surface polymerization via substrate-directed molecular template

2021 ◽  
Author(s):  
Siyi Gu ◽  
Shizhang Fu ◽  
Caimei Gong ◽  
Sihao Li ◽  
Xiaoqing Liu ◽  
...  
Keyword(s):  
Polymerization Process ◽  
Surface Polymerization ◽  
Molecular Nanostructures

Using template to control on-surface polymerization process is valuable for building functional molecular nanostructures. Here, the role of the symmetric matching between a halogen-ligand component (H2TBrPP) and substrate on the...

scholarly journals Comparing Ullmann Coupling on Noble Metal Surfaces: On-Surface Polymerization of 1,3,6,8-Tetrabromopyrene on Cu(111) and Au(111)

2016 ◽  
Vol 22 (17) ◽  
pp. 5801-5801
Author(s):  
Tuan Anh Pham ◽  
Fei Song ◽  
Manh-Thuong Nguyen ◽  
Zheshen Li ◽  
Florian Studener ◽  
...  
Keyword(s):  
Noble Metal ◽  
Metal Surfaces ◽  
Surface Polymerization ◽  
Ullmann Coupling

The Role of Kinetics versus Thermodynamics in Surface-Assisted Ullmann Coupling on Gold and Silver Surfaces

2019 ◽  
Vol 141 (12) ◽  
pp. 4824-4832 ◽  
Author(s):  
Massimo Fritton ◽  
David A. Duncan ◽  
Peter S. Deimel ◽  
Atena Rastgoo-Lahrood ◽  
Francesco Allegretti ◽  
...  
Keyword(s):  
Silver Surfaces ◽  
Ullmann Coupling

scholarly journals Comparing Ullmann Coupling on Noble Metal Surfaces: On-Surface Polymerization of 1,3,6,8-Tetrabromopyrene on Cu(111) and Au(111)

2016 ◽  
Vol 22 (17) ◽  
pp. 5937-5944 ◽  
Author(s):  
Tuan Anh Pham ◽  
Fei Song ◽  
Manh-Thuong Nguyen ◽  
Zheshen Li ◽  
Florian Studener ◽  
...  
Keyword(s):  
Noble Metal ◽  
Metal Surfaces ◽  
Surface Polymerization ◽  
Ullmann Coupling

The role of halogens in on-surface Ullmann polymerization

2017 ◽  
Vol 204 ◽  
pp. 453-469 ◽  
Author(s):  
Gianluca Galeotti ◽  
Marco Di Giovannantonio ◽  
Josh Lipton-Duffin ◽  
Maryam Ebrahimi ◽  
Stefano Tebi ◽  
...  
Keyword(s):  
Building Blocks ◽  
Molecular Structures ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Elastic Band ◽  
X Ray ◽  
Molecular Precursors ◽  
Diffusion Paths ◽  
Ullmann Coupling

Ullmann coupling is the most common approach to form surface-confined one- and two-dimensional conjugated structures from haloaryl derivatives. The dimensions of the formed nanostructures can be controlled by the number and location of halogens within the molecular precursors. Our study illustrates that the type of halogen plays an essential role in the design, orientation, and extent of the surface-confined organometallic and polymeric nanostructures. We performed a comparative analysis of five 1,4-dihalobenzene molecules containing chlorine, bromine, and iodine on Cu(110) using scanning tunneling microscopy, fast-X-ray photoelectron and near edge X-ray absorption fine structure spectroscopies. Our experimental data identify different molecular structures, reaction temperatures and kinetics depending on the halogen type. Climbing image nudged elastic band simulations further clarify these observations by providing distinct diffusion paths for each halogen species. We show that in addition to the structure of the building blocks, the halogen type has a direct influence on the morphology of surface-confined polymeric structures based on Ullmann coupling.

scholarly journals Cover Picture: Comparing Ullmann Coupling on Noble Metal Surfaces: On-Surface Polymerization of 1,3,6,8-Tetrabromopyrene on Cu(111) and Au(111) (Chem. Eur. J. 17/2016)

2016 ◽  
Vol 22 (17) ◽  
pp. 5797-5797 ◽  
Author(s):  
Tuan Anh Pham ◽  
Fei Song ◽  
Manh-Thuong Nguyen ◽  
Zheshen Li ◽  
Florian Studener ◽  
...  
Keyword(s):  
Noble Metal ◽  
Metal Surfaces ◽  
Surface Polymerization ◽  
Ullmann Coupling

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management
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