메뉴 건너뛰기




Volumn 13, Issue 16, 1997, Pages 4487-4489

Fabrication of carboxylic acid-terminated thin films using poly(ethyleneimine) on a gold surface

Author keywords

[No Author keywords available]

Indexed keywords

ACOUSTIC WAVES; CARBOXYLIC ACIDS; ELLIPSOMETRY; FILM PREPARATION; GOLD; PLASTIC COATINGS; SENSORS; SUBSTRATES; X RAY PHOTOELECTRON SPECTROSCOPY;

EID: 0031556127     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: 10.1021/la970081l     Document Type: Article
Times cited : (49)

References (41)
  • 23
    • 4243058620 scopus 로고    scopus 로고
    • note
    • After the PEI-coated crystal was rinsed with water and DMF, the frequency became stable, and further rinsing with DMF caused negligible frequency changes (±5 Hz). The PEI film is thus stable after one DMF rinse.
  • 24
    • 4243138597 scopus 로고    scopus 로고
    • note
    • Exposure of bare gold to succinic anhydride in DMF followed by rinsing with DMF produced a negligible frequency change. This demonstrates that the much larger frequency changes resulting from immersion of PEI-coated crystals in succinic anhydride/DMF are due to irreversible attachment of mass to the polymer support.
  • 25
    • 4243083500 scopus 로고    scopus 로고
    • note
    • The XPS data support the conclusion that, under the completely anhydrous conditions employed, most of this frequency decrease is due to attachment of dopamine via amide bond formation. We note however that subsequent rinsing with water causes TSM sensor frequency increases which may be due to hydrolysis of small amounts of the remaining ester-linked O-acylisourea intermediate and/or some removal of the polymer support.
  • 28
    • 85088620668 scopus 로고    scopus 로고
    • note
    • -8 Torr) present in the instrument.
  • 29
    • 4243124382 scopus 로고    scopus 로고
    • note
    • Although we might expect an increase in the peak at 285.8 eV from the methylene carbons of the attached anhydride, its decrease is likely simply a reflection of a lower absolute amount of polymer present in the PEI + SA samples vs the PEI sample. This is consistent with the fact that the latter sample was not rinsed with DMF and therefore contains an excess of polymer which is normally removed with this rinse.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.