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Synthesis and Characterization of 1,2-Dithiolane Modified Self-Assembling Peptides
Published on: August 20, 2018
Triphenylene silanes for direct surface anchoring in binary mixed self-assembled monolayers.
Markus Mansueto1, Sven Sauer, Martin Butschies
1Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
Langmuir : the ACS Journal of Surfaces and Colloids
|May 24, 2012
Summary
New triphenylene silanes exhibit discotic lamellar mesophases and liquid-like alkyl chains. These properties were transferred to thin films, creating binary self-assembled monolayers (SAMs) for organic templating applications.
Area of Science:
- Materials Science
- Supramolecular Chemistry
- Organic Electronics
Background:
- Triphenylene derivatives are known for their liquid crystalline properties.
- Self-assembled monolayers (SAMs) are crucial for surface modification and thin-film fabrication.
Purpose of the Study:
- Synthesize and characterize novel triphenylene-based silanes.
- Investigate their self-assembly behavior in bulk and thin-film states.
- Evaluate their potential as model systems for organic templating.
Main Methods:
- Synthesis of triphenylene silanes (Tm-Cn).
- Mesomorphic property analysis using DSC, POM, and X-ray diffraction (SAXS/WAXS).
- Thin-film characterization via contact angle, ellipsometry, AFM, and X-ray reflectivity (XRR).
Main Results:
- Discotic lamellar mesophase and liquid-like alkyl chains observed in triphenylene silanes.
- Successful formation of self-assembled monolayers (SAMs) on glass and silicon oxide surfaces.
- Binary SAMs demonstrated controllable film thickness and roughness, explained by a steric hindrance model.
Conclusions:
- Triphenylene silanes possess tunable mesomorphic properties suitable for thin-film applications.
- Binary SAMs offer a versatile platform for organic templating.
- The study provides insights into structure-property relationships for silane-based SAMs.
