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XPS characterization of porphyrin based self-assembled monolayers on gold
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Advanced Materials Research

¾í: 548  
Ò³: 235-8  
DOI: 10.4028/www.scientific.net/AMR.548.234  

³ö°æÄê: 2012  

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ÎÄÏ×ÀàÐÍ:Journal Paper

ÓïÖÖ:English

Èë²ØºÅ:13666011

ISSN:1022-6680

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zch79214: ½ð±Ò+3, ¡ï¡ï¡ïºÜÓаïÖú 2014-08-16 08:43:28
Accession number:  20124515635291

  Title:  XPS characterization of porphyrin based self-assembled monolayers on gold
  Authors:  Liu, Guangyan1 ; Wang, Wencai2   
  Author affiliation:  1 Binzhou Polytechnic, Shandong 256603, China  
   2 Key Laboratory of Carbon Fiber and Functional Polymers, Beijing 100029, China  
  Corresponding author:  Liu, G. (gyliu2@yahoo.com)  
  Source title:  Advanced Materials Research
  Abbreviated source title:  Adv. Mater. Res.
  Volume:  548
  Monograph title:  Material and Manufacturing Technology III
  Issue date:  2012
  Publication year:  2012
  Pages:  234-238
  Language:  English
  ISSN:  10226680  
  ISBN-13:  9783037854532  
  Document type:  Conference article (CA)
  Conference name:  3rd International Conference on Material and Manufacturing Technology, ICMMT 2012
  Conference date:  May 5, 2012 - May 6, 2012
  Conference location:  Chengdu, China
  Conference code:  92652  
  Sponsor:  International Association of Computer Science; and Information Technology(IACSIT); Sichuan Institute of Electronics
  Publisher:  Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
  Abstract:  XPS characterization of self-assembled monolayers (SAMs) of tetraphenylporphyrin bearing a rigid tripodal linker by chemisorption of the thiol-derivatized terminal groups on gold substrate is described. The surface structure of the SAMs bearing tripodal linker were analyzed by X-ray photoelectron spectroscopy (XPS), and electrochemical cyclic voltammetry (CV) measurements. XPS confirms the formation of porphyrin SAMs on Au surface and identified bonding configurations of porphyrin molecules in the chemisorption of SAMs. The film thickness values (36 A&ring obtained by XPS agree well with the estimated value by assuming the vertical orientation of the molecules on the gold surface. Using the Au4f7/2 as an internal standard, a lower binding energies shift (1.8 eV) of S2p in the SAMs reveals that the porphyrins were chemisorbed onto the surface via sulfur-gold bonds. Electrochemical CV measurements suggest near monolayer coverage of the tripodal porphyrins with good stability of the redox SAMs, which have promising application in the development of molecular based electronic device and memory architectures. © (2012) Trans Tech Publications, Switzerland.
  Number of references:  21
  Main heading:  X ray photoelectron spectroscopy  
  Controlled terms:  Binding energy  -  Chemisorption  -  Cyclic voltammetry  -  Gold  -  Lunar surface analysis  -  Manufacture  -  Molecules  -  Organic polymers  -  Photoelectrons  -  Porphyrins  -  Self assembled monolayers  -  Sulfur  -  Surface analysis  
  Uncontrolled terms:  Au surfaces  -  Bonding configurations  -  C-V measurement  -  Electronic device  -  Gold substrates  -  Gold surfaces  -  Good stability  -  Internal standards  -  Monolayer coverage  -  Porphyrin molecules  -  Sams  -  Terminal groups  -  Tetraphenyl porphyrins  -  Thickness value  -  XPS characterization  
  Classification code:  951 Materials Science -  931.3 Atomic and Molecular Physics -  815.1.1 Organic Polymers -  813.2 Coating Materials -  804.1 Organic Compounds -  804 Chemical Products Generally -  802.2 Chemical Reactions -  801 Chemistry -  547.1 Precious Metals -  537.1 Heat Treatment Processes -  423 Non Mechanical Properties and Tests of Building Materials
  DOI:  10.4028/www.scientific.net/AMR.548.234
  Database:  Compendex
   Compilation and indexing terms, © 2014 Elsevier Inc.

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zch79214: ½ð±Ò+3, ¡ï¡ï¡ïºÜÓаïÖú 2014-08-16 08:43:19
Accession number:  13666011

  Title:  XPS characterization of porphyrin based self-assembled monolayers on gold
  Authors:  Guangyan Liu1 ; Wencai Wang2   
  Author affiliation:  1 Binzhou Polytech., Binzhou, China  
   2 Key Lab. of Carbon Fiber & Functional Polymers, Beijing, China  
  Source title:  Advanced Materials Research
  Abbreviated source title:  Adv. Mater. Res. (Switzerland)
  Volume:  548
  Publication date:  2012
  Pages:  235-8
  Language:  English
  ISSN:  1022-6680  
  Document type:  Journal article (JA)
  Publisher:  Trans Tech Publications Ltd.
  Country of publication:  Switzerland
  Material Identity Number:  GC91-2013-006  
  Abstract:  XPS characterization of self-assembled monolayers (SAMs) of tetraphenylporphyrin bearing a rigid tripodal linker by chemisorption of the thiol-derivatized terminal groups on gold substrate is described. The surface structure of the SAMs bearing tripodal linker were analyzed by X-ray photoelectron spectroscopy (XPS), and electrochemical cyclic voltammetry (CV) measurements. XPS confirms the formation of porphyrin SAMs on Au surface and identified bonding configurations of porphyrin molecules in the chemisorption of SAMs. The film thickness values (36 A&ring obtained by XPS agree well with the estimated value by assuming the vertical orientation of the molecules on the gold surface. Using the Au4f7/2 as an internal standard, a lower binding energies shift (1.8 eV) of S2p in the SAMs reveals that the porphyrins were chemisorbed onto the surface via sulfur-gold bonds. Electrochemical CV measurements suggest near monolayer coverage of the tripodal porphyrins with good stability of the redox SAMs, which have promising application in the development of molecular based electronic device and memory architectures.
  Number of references:  21
  Inspec controlled terms:  binding energy  -  chemisorption  -  electrochemistry  -  monolayers  -  organic compounds  -  oxidation  -  reduction (chemical)  -  self-assembly  -  surface structure  -  thin films  -  voltammetry (chemical analysis)  -  X-ray photoelectron spectra  
  Uncontrolled terms:  XPS characterization  -  self-assembled monolayers  -  tetraphenylporphyrin  -  rigid tripodal linker  -  chemisorption  -  thiol-derivatized terminal groups  -  gold substrate  -  surface structure  -  X-ray photoelectron spectroscopy  -  XPS  -  electrochemical cyclic voltammetry measurements  -  CV measurements  -  porphyrin SAM formation  -  surface bonding configurations  -  porphyrin molecules  -  film thickness values  -  binding energy shift  -  sulfur-gold surface bonds  -  electrochemical CV measurements  -  tripodal porphyrins  -  redox SAM  -  molecular based electronic device  -  memory architectures  -  electron volt energy 1.8 eV  -  S-Au  
  Inspec classification codes:  A6817 Monolayers and Langmuir-Blodgett films -  A6855 Thin film growth, structure, and epitaxy -  A8265M Sorption and accommodation coefficients (surface chemistry) -  A6845D Adsorption and desorption kinetics; evaporation and condensation -  A6820 Solid surface structure -  A8245 Electrochemistry and electrophoresis -  A8280F Electrochemical analytical methods -  A8230 Specific chemical reactions; reaction mechanisms -  A8160 Corrosion, oxidation, etching, and other surface treatments -  A8280P Electron spectroscopy for chemical analysis (photoelectron, Auger spectroscopy, etc.) -  A7960 Photoemission and photoelectron spectra (condensed matter)
  Numerical data indexing:  electron volt energy 1.8E+00 eV
  Chemical indexing:  SAu/sur Au/sur S/sur SAu/bin Au/bin S/bin
  Treatment:  Experimental (EXP)  
  Discipline:  Physics (A)
  DOI:  10.4028/www.scientific.net/AMR.548.234
  IPC Code:  G01N27/26  SECTION G PHYSICS
MEASURING counting ; TESTING
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES separating components of materials in general , , , ; apparatus fully provided for in a single other...
Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means take precedence; measurement or testing of electric or magnetic variables or of electric or magnetic...
by investigating electrochemical variables; by using electrolysis or electrophoresis investigating resistance to corrosion ; investigating or analysing materials by separation into components using...

        
  Database:  Inspec
   Copyright 2013, The Institution of Engineering and Technology
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