Preparation of dendritic multisulfides and their assembly on air/water interfaces and gold surfaces

Maik Liebau, Henk M. Janssen, Kazuhiko Inoue, Seiji Shinkai, Jurriaan Huskens, Rint P. Sijbesma, E. W. Meijer, David N. Reinhoudt

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Poly(propylene imine) (PPI) dendrimers of generations 1-5 have been derivatized with dialkyl sulfide chains. On water, these dendrimers form stable LB films with densely packed alkyl chains pointing to the air and cores exposed to the aqueous solution. Self-assembly of the same dendrimers from solution onto a gold surface leads to a flattened orientation of the molecules on the surface, as shown by high contact angle hystereses, high electrochemical capacitances, and low charge transfer resistances. X-ray photoelectron spectroscopy data indicate that the formation of the flattened structure can be attributed to adsorption to the gold surface of not only part of the sulfide moieties in the alkyl chains, but also part of the tertiary amines in the core. The electrochemically determined surface coverages of ferrocene-modified dendritic wedges (with similar molecular structures as those of the dialkyl sulfide PPI dendrimers) confirm the proposed flattened, surface-spread dendritic structure. In contrast, LB films of the sulfide PPI dendrimers that were transferred onto gold appear to largely remain their original, densely packed state, as for these films smaller contact angle hystereses and higher charge transfer resistances are measured than those observed for the monolayers prepared by self-assembly from solution. Additionally, the electrochemical capacitances of the transferred LB films point to a layer thickness comparable to the thickness of a densely packed didecylsulfide monolayer. The results in this study demonstrate that different surface architectures can be prepared of the same compounds by solely varying the preparation procedure.

Original languageEnglish
Pages (from-to)674-682
Number of pages9
JournalLangmuir
Volume18
Issue number3
DOIs
Publication statusPublished - Feb 5 2002
Externally publishedYes

Fingerprint

Dendrimers
Gold
dendrimers
assembly
gold
preparation
Water
sulfides
Langmuir Blodgett films
air
Air
imines
water
Sulfides
propylene
Self assembly
Propylene
Contact angle
Hysteresis
Charge transfer

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Liebau, M., Janssen, H. M., Inoue, K., Shinkai, S., Huskens, J., Sijbesma, R. P., ... Reinhoudt, D. N. (2002). Preparation of dendritic multisulfides and their assembly on air/water interfaces and gold surfaces. Langmuir, 18(3), 674-682. https://doi.org/10.1021/la0107547

Preparation of dendritic multisulfides and their assembly on air/water interfaces and gold surfaces. / Liebau, Maik; Janssen, Henk M.; Inoue, Kazuhiko; Shinkai, Seiji; Huskens, Jurriaan; Sijbesma, Rint P.; Meijer, E. W.; Reinhoudt, David N.

In: Langmuir, Vol. 18, No. 3, 05.02.2002, p. 674-682.

Research output: Contribution to journalArticle

Liebau, M, Janssen, HM, Inoue, K, Shinkai, S, Huskens, J, Sijbesma, RP, Meijer, EW & Reinhoudt, DN 2002, 'Preparation of dendritic multisulfides and their assembly on air/water interfaces and gold surfaces', Langmuir, vol. 18, no. 3, pp. 674-682. https://doi.org/10.1021/la0107547
Liebau M, Janssen HM, Inoue K, Shinkai S, Huskens J, Sijbesma RP et al. Preparation of dendritic multisulfides and their assembly on air/water interfaces and gold surfaces. Langmuir. 2002 Feb 5;18(3):674-682. https://doi.org/10.1021/la0107547
Liebau, Maik ; Janssen, Henk M. ; Inoue, Kazuhiko ; Shinkai, Seiji ; Huskens, Jurriaan ; Sijbesma, Rint P. ; Meijer, E. W. ; Reinhoudt, David N. / Preparation of dendritic multisulfides and their assembly on air/water interfaces and gold surfaces. In: Langmuir. 2002 ; Vol. 18, No. 3. pp. 674-682.
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