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Volumn 36, Issue 10, 2007, Pages 1226-1227

Reversible thermochromic change of molecular architecture for a diacetylene derivative 10,12-pentacosadiynoic acid self-assembled thin films on Ag surfaces

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EID: 36048971408     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2007.1226     Document Type: Article
Times cited : (11)

References (20)
  • 3
    • 84939218263 scopus 로고    scopus 로고
    • G. Z. Wegner, Z. Naturforsch 1969, 24B, 824.
    • G. Z. Wegner, Z. Naturforsch 1969, 24B, 824.
  • 19
    • 36049000420 scopus 로고    scopus 로고
    • PCDA (>98, was purchased from Fluka. The Ag powder (99.9, purity) with a nominal particle size of 2-3.5 μm was purchased from Aldrich. 17 Wc chose to use not a flat substrate but a powder surface, since both surface infrared and Raman spectra can be obtained for the same sample. We also tested the SERS spectra of PCDA on roughed Ag plate surfaces see ref 20, For the self-assembly of PCDA on Ag, approximately 0.050 g of silver power was placed in a cleaned small vial into which stock solution of 10mM PCDA and the same molar amount of NaOH were added and left overnight. A portion of the PCDA-assembled powdered sample was transferred onto a ZnSe crystal of Pike Technology Miracle external reflection accessory equipped with a temperature controller. UV-vis absorption spectra of PCDA, λmax' s for the red and blue phases were observed at ≈543 and ≈625 nm, respectively, were obtained with a Shimadzu UV-3101PC spectrophotometer. The infrared spectra
    • -1 were used as the excitation sources for the Raman experiments using a Linkam THMS 600 thermal heating stage. Since we have not introduced the UV light to attempt any intentional polymerization, the sample is not assumed to be substantially polymerized except the Raman measured ones irradiated by a high power laser.
  • 20
    • 36048930351 scopus 로고    scopus 로고
    • Supporting Information is available electronically on the CSJ-Journal Web site, http://www.csj.jp/journals/chem-lett/index.html.
    • Supporting Information is available electronically on the CSJ-Journal Web site, http://www.csj.jp/journals/chem-lett/index.html.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.