Formation of multilayers by self-assembly

Nolan Tillman, Abraham Ulman, Thomas L. Penner

Research output: Contribution to journalArticle

Abstract

Monolayer and multilayer films were formed by self-assembly of methyl 23-(trichlorosilyl)tricosanoate (1) from organic solution. In agreement with published results, this compound was found to form good quality, close-packed monolayers on silicon surfaces. We have, however, found that films significantly thicker than the three monolayers previously obtained can be formed from continued chemisorption of monolayers of this compound followed by reduction of the surface ester with LiAlH4 in THF to form an "alcohol surface". The quality of monolayer formation in the multilayer films was monitored in detail by ellipsometry, contact angle, and FTIR measurements, and, although generally increasing disorder can be detected, films of up to 25 discrete monolayers can be successfully made. These results indicate that self-assembly is a viable alternative to the Langmuir-Blodgett transfer technique for the construction of relatively thick (0.1-μm scale), ordered, multilayer films.

Original languageEnglish (US)
Pages (from-to)101-111
Number of pages11
JournalLangmuir
Volume5
Issue number1
StatePublished - 1989

Fingerprint

Self assembly
self assembly
Monolayers
Multilayers
Multilayer films
chemisorption
ellipsometry
thick films
esters
alcohols
Ellipsometry
disorders
Silicon
Chemisorption
Thick films
Contact angle
Esters
silicon
Alcohols

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Tillman, N., Ulman, A., & Penner, T. L. (1989). Formation of multilayers by self-assembly. Langmuir, 5(1), 101-111.

Formation of multilayers by self-assembly. / Tillman, Nolan; Ulman, Abraham; Penner, Thomas L.

In: Langmuir, Vol. 5, No. 1, 1989, p. 101-111.

Research output: Contribution to journalArticle

Tillman, N, Ulman, A & Penner, TL 1989, 'Formation of multilayers by self-assembly', Langmuir, vol. 5, no. 1, pp. 101-111.
Tillman N, Ulman A, Penner TL. Formation of multilayers by self-assembly. Langmuir. 1989;5(1):101-111.
Tillman, Nolan ; Ulman, Abraham ; Penner, Thomas L. / Formation of multilayers by self-assembly. In: Langmuir. 1989 ; Vol. 5, No. 1. pp. 101-111.
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