What question did this study set out to answer?

To investigate the nanoscale surface morphology, initial adsorption kinetics, and phase separation behavior of single-component and mixed n-alkanethiol self-assembled monolayers on Au(111).

March 1, 1997Langmuir

Surface Phase Behavior of n-Alkanethiol Self-Assembled Monolayers Adsorbed on Au(111): An Atomic Force Microscope Study

View Full Paper

Ask AI

Bookmark

Authors

KTKaoru TamadaKyushu University MHMasahiko HaraNihon University HSHiroyuki SasabeOtsuka (Japan)

Discussion

Member takes

Implication

Atomic force microscopy study uncovers domain formation and phase separation in n-alkanethiol monolayers on gold, highlighting the role of intermolecular chain interactions.

Key Points

To investigate the nanoscale surface morphology, initial adsorption kinetics, and phase separation behavior of single-component and mixed n-alkanethiol self-assembled monolayers on Au(111).
Immersed Au(111) substrates into 0.01 mM ethanol solutions of single alkanethiols (C4H9SH, C12H25SH, or C18H37SH) for periods ranging from 1 s to 10 min to assess film growth kinetics.
Immersed Au(111) substrates for 1 h into 1 mM ethanol solutions of mixed thiols (C4H9SH and C18H37SH) with solution concentration ratios ranging from 1:1 to 100:1.
Imaged the surface domain structures and topography in real space using atomic force microscopy (AFM).
Full surface coverage was achieved within 3 min or more for single-component films, with partially covered C12H25SH and C18H37SH forming island aggregates while C4H9SH formed meshlike domains.
Mixed C4H9SH and C18H37SH monolayers exhibited distinct nanoscale phase separation at solution concentration ratios of 20:1 and 40:1.
Ratios outside the 20:1 to 40:1 range yielded flat, homogenous films predominantly composed of a single thiol component.

Cite This Study

Tamada et al. (1997) studied this question.

synapsesocial.com/papers/69d6fc945413bc3de5ab32c3 https://doi.org/10.1021/la950630s

View Full Paper

Ask AI

Bookmark

Implication

Atomic force microscopy study uncovers domain formation and phase separation in n-alkanethiol monolayers on gold, highlighting the role of intermolecular chain interactions.

Surface Phase Behavior of n-Alkanethiol Self-Assembled Monolayers Adsorbed on Au(111): An Atomic Force Microscope Study

Discussion

Member takes

Implication

Key Points

Cite This Study

Surface Phase Behavior of n-Alkanethiol Self-Assembled Monolayers Adsorbed on Au(111): An Atomic Force Microscope Study

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider