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Consortium of Swiss Academic Libraries

A Study of Deterministic Positioning of Carbon Nanotubes by Dielectrophoresis

Arun, A. ; Salet, P. ; Ionescu, A.

In: Journal of Electronic Materials, 2009, vol. 38, no. 6, p. 742-749

Université de Fribourg

Vesicle origami: cuboid phospholipid vesicles formed by template‐free self‐assembly

Neuhaus, Frederik ; Mueller, Dennis ; Tanasescu, Radu ; Balog, Sandor ; Ishikawa, Takashi ; Brezesinski, Gerald ; Zumbuehl,  Andreas

In: Angewandte Chemie International Edition, 2017, vol. 56, no. 23, p. 6515–6518

Phospholipid liposomes are archetypical self-assembled structures. To minimize the surface tension, the vesicles typically are spherical. Deciphering the bilayer code, the basic physical interactions between phospholipids would allow these molecules to be utilized as building blocks for novel, non-spherical structures. A 1,2- diamidophospholipid is presented that self-assembles into a cuboid...

Université de Neuchâtel

Insight into the rules dictating the formation of arene ruthenium metalla-assemblies

Garci, Amine ; Therrien, Bruno (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2015.

The self-assembly process is a natural phenomenon with the ability to organize biological systems. Its development by chemists as a synthetic process allowed the formation of esthetical structures as well as highly complex supramolecular systems with remarkable biological functions. Since 1990, metal directed self-assembly strategy has largely contributed to the design and synthesis of discrete...

Université de Fribourg

Controlling molecular self-assembly on an insulating surface by rationally designing an efficient anchor functionality that maintains structural flexibility

Hauke, Christopher M. ; Bechstein, Ralf ; Kittelmann, Markus ; Storz, Christof ; Kilbinger, Andreas F. M. ; Rahe, Philipp ; Kühnle, Angelika

In: ACS Nano, 2013, vol. 7, no. 6, p. 5491–5498

Molecular self-assembly on surfaces is dictated by the delicate balance between intermolecular and molecule–surface interactions. For many insulating surfaces, however, the molecule–surface interactions are weak and rather unspecific. Enhancing these interactions, on the other hand, often puts a severe limit on the achievable structural variety. To grasp the full potential of molecular...

Université de Neuchâtel

Complexes arène-ruthénium multinucléaires fluctuants : véhicules pour le transport intracellulaire de molécules cytotoxiques et photosensibilisantes

Freudenreich, Julien ; Süss-Fink, Georg (Dir.) ; Therrien, Bruno (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2012.

Depuis plusieurs années, la thérapie photo-dynamique est pratiquée au quotidien pour soigner certaines tumeurs, comme le mélanome. La méthode consiste à traiter le patient au moyen d’un composé photosensible, indifféremment absorbé par les cellules normales et cancéreuses, ces dernières le retenant toutefois plus longtemps. Après plusieurs heures, le composé est activé par une...

Université de Neuchâtel

Arene Ruthenium Assemblies for Biological Applications : From Carceplex to Host-Guest Metalla-Cages

Barry, Nicolas ; Süss-Fink, Georg (Dir.) ; Therrien, Bruno (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2011 ; 2192.

Since the development of supramolecular chemistry in the 1980s more and more discrete molecular objects have been synthesised. In this research area metals play a key role. Indeed, the coordination-driven self-assembly allows a directional-bonding approach that organises the different building blocks into supramolecular objects according to the coordination modes of the transition metal....

Université de Fribourg

a new level of hierarchical structure control by use of supramolecular self-assembled dendronized block copolymers

Li, Chaoxu ; Schlüter, Dieter A. ; Zhang, Afang ; Mezzenga, Raffaele

In: Advanced Materials, 2008, vol. 20, no. 23, p. 4530 - 4534

Complexation of dendronized block copolymers with sulfate alkyl tails forms unprecedented hierarchically ordered bulk structures, including rectangular-in-lamellar, tetragonal-in-lamellar, hexagonal-in-lamellar and lamellar-in-lamellar. These novel liquid-crystalline morphologies, which can be designed at low length scales in these systems, are expected to provide final materials with not only...

Université de Fribourg

Synthesis of poly(paraphenylene vinylene) - polystyrene-based rod-coil block copolymer by atom transfer radical polymerization: Toward a self-organized lamellar semiconducting material

Brochon, Cyril ; Sary, Nicolas ; Mezzenga, Raffaele ; Ngov, Chheng ; Richard, Fanny ; May, Michaël ; Hadziioannou, Georges

In: Journal of Applied Polymer Science, 2008, vol. 110, no. 6, p. 3664 - 3670

Atom transfer radical polymerization (ATRP) was used as a versatile route to well-defined poly(diethylhexyl-p-phenylenevinylene-b-styrene) (PPV-b-PS) semiconducting block copolymers. For this purpose, original conjugated macroinitiators were synthesized from DEH-PPV and further used for the copolymerization reaction. The microphase-separated morphologies obtained with the semiconducting PPV-b-PS...

Université de Fribourg

Functional columnar liquid crystalline phases from ionic complexes of dendronized polymers and sulfate alkyl tails

Canilho, Nadia ; Kasëmi, Edis ; Schlüter, Dieter A. ; Ruokolainen, Janne ; Mezzenga, Raffaele

In: Macromolecular Symposia, 2008, vol. 270, no. 1, p. 58 - 64

We describe how cationic dendronized polymers of generations 1, and 2 and anionic monoalkyl tails can be combined by supramolecular ionic complexation into comb-like liquid crystalline polymers. The final structures in bulk of these supramolecular complexes were studied by differential scanning calorimetry (DSC), cross-polarized optical microscopy (CPOM), small angle x-rays scattering (SAXS) and...