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Volumn 15, Issue 8, 1999, Pages 2788-2793

Observation of silver and hydrogen ion binding to self-assembled monolayers using chemically modified AFM tips

Author keywords

[No Author keywords available]

Indexed keywords

ADHESION; ATOMIC FORCE MICROSCOPY; BOND STRENGTH (CHEMICAL); CHEMICAL MODIFICATION; ELECTROSTATICS; HYDROGEN; MONOLAYERS; SILICONES; SILVER; SURFACE STRUCTURE;

EID: 0344614476     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: 10.1021/la980661y     Document Type: Article
Times cited : (23)

References (40)
  • 19
    • 0345600779 scopus 로고    scopus 로고
    • note
    • 3S- group is called here the methylsulfanyl group and not the methylthio group, as can be found in older literature.
  • 25
    • 0344306277 scopus 로고    scopus 로고
    • note
    • In refs 8 and 11, a decrease in the adhesion force at pH 12, as found in the present study, was not observed. In contrast to our system, results there were obtained with gold-covered tips and gold samples modified with mercaptan SAMs, and the deprotonation of residual silanol groups could therefore not occur (vide infra).
  • 30
    • 0344306274 scopus 로고    scopus 로고
    • note
    • 3 solutions at neutral pH (≈70° (Figure 4c) and ≈58° (Figure 5b), respectively). The smaller surface free energy for 2-imidazolin-1-yl-terminated SAMs may reflect the lower molecular density in the 2-imidazolin-1-yl-terminated SAMs due to the bigger size of the 2-imidazolin-1-yl groups. The smaller effect of pH on adhesion force and contact angle for 2-imidazolin-1-yl-terminated SAMs than for amino-terminated SAMs also seems to confirm a lower density of 2-imidazolin-1-yl groups in the former.
  • 32
    • 0003519909 scopus 로고
    • Academic Press: London
    • Removal of the SAMs from tip or substrate under alkaline conditions (see Ulman, A. An Introduction to Ultrathin Organic Films: from Langmuir-Blodgett to Self-Assembly; Academic Press: London, 1991.) seemed not to occur, as indicated by the reversibility of the pH dependence of the contact angles as well as adhesion forces even after immersion of the SAM substrates in alkaline solutions of pH 12.
    • (1991) An Introduction to Ultrathin Organic Films: From Langmuir-Blodgett to Self-Assembly
    • Ulman, A.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.