Publications by Stephen Schrettl

Reversible Microscale Assembly of Nanoparticles Driven by the Phase Transition of a Thermotropic Liquid Crystal

Holger Frauenrath, Stephen Schrettl, Francesco Stellacci, Paulo Henrique Jacob Silva, Kellen Michael Harkness

The arrangement of nanoscale building blocks into patternswithmicroscale periodicity is challenging to achieve via self-assemblyprocesses. Here, we report on the phase-transition-driven collectiveassembly of gold nanoparticles in a thermotropic liquid crys ...

AMER CHEMICAL SOC2023

Structure-Property Relationships of Microphase-Separated Metallosupramolecular Polymers

Emad Oveisi, Stephen Schrettl

The structural, thermomechanical, and viscoelastic properties of metallosupramolecular polymers (MSPs) can be controlled through the choice of the multiligand monomer and the nature of the metal salt from which these materials are assembled. This versatili ...

American Chemical Society2020

Spatially Resolved Production of Platinum Nanoparticles in Metallosupramolecular Polymers

Emad Oveisi, Stephen Schrettl

Nanocomposites consisting of a polymer matrix and metallic nanoparticles can merge the functional, structural, and mechanical properties of the two components and are useful for applications that range from catalysis to soft electronics. Gaining spatial co ...

AMER CHEMICAL SOC2020

Optical gap and fundamental gap of oligoynes and carbyne

Jan Cornelius Brauer, Laurent Alexis Clément Vannay, Anne-Clémence Corminboeuf, Holger Frauenrath, Stephen Schrettl, Emmanuel Romaric Contal, Eric Albert Georges Bremond

The optoelectronic properties of various carbon allotropes and nanomaterials have been well established, while the purely sp-hybridized carbyne remains synthetically inaccessible. Its properties have therefore frequently been extrapolated from those of def ...

Nature Research2020

Stimuli-responsive Pt(0)-containing metallosupramolecular polymers

Emad Oveisi, Stephen Schrettl

AMER CHEMICAL SOC2018

Method for the preparation of a coating comprising oligomeric alkynes

Yves Leterrier, Holger Frauenrath, Stephen Schrettl, Bjoern Schulte

The invention relates to a method for the preparation of a coating comprising at least one coating layer on a substrate, the method comprising the steps of a. providing monomers of the type R- (N)x-(L)m- (C=C)n-(L')o- (N')y-R', wherein R is a head moiety, ...

2017

Method for the preparation of a coating

Yves Leterrier, Holger Frauenrath, Stephen Schrettl, Bjoern Schulte

The invention relates to a method for the preparation of a coating comprising at least one coating layer on a solid substrate, said method comprising the steps of a, providing monomers of the type R-(N)x-(L)m-(C≡C)n-(L']o(N')y-R', wherein R is a head moiet ...

2016

Facile synthesis of oligoyne amphiphiles and their rotaxanes

Holger Frauenrath, Stephen Schrettl, Tobias Hoheisel, Ruth Szilluweit, Martin Fritzsche, Emmanuel Romaric Contal

Carbon-rich organic compounds containing a series of conjugated triple bonds (oligoynes) are relevant synthetic targets, but an improved access to oligoynes bearing functional groups would be desirable. Here, we report the straightforward synthesis of two ...

Royal Soc Chemistry2015

Soft-landing electrospray ion beam deposition of sensitive oligoynes on surfaces in vacuum

Klaus Kern, Stephan Rauschenbach, Holger Frauenrath, Stephen Schrettl, Tobias Hoheisel, Gordon Rinke

Characterizing the complex structure of such molecules with highly resolving, vacuum-based methods like scanning probe microscopy requires their transfer into the gas phase and further onto an atomically clean surface in ultrahigh vacuum without causing ad ...

Elsevier2015

Functionalized Carbon Nanostructures from Oligoyne Carboxylates

Stephen Schrettl

Functional nanostructured carbon materials, including two-dimensionally extended nanosheets, offer intriguing perspectives for applications in emerging technologies such as hydrogen storage, lithium storage, transition metal free catalysis, or solar abso ...

EPFL2014

Functional carbon nanosheets prepared from hexayne amphiphile monolayers at room temperature

Guillaume Pasche, Yannik Fontana, Anne-Clémence Corminboeuf, Anna Fontcuberta i Morral, Holger Frauenrath, Emad Oveisi, Stephen Schrettl, Javier Reguera Gomez, Riccardo Petraglia

Carbon nanostructures that feature two-dimensional extended nanosheets are important components for technological applications such as high-performance composites, lithium-ion storage, photovoltaics and nanoelectronics. Chemical functionalization would ren ...

Nature Publishing Group2014

A Multi-Step Single-Crystal-to-Single-Crystal Bromodiacetylene Dimerization

Andrzej Sienkiewicz, Rosario Scopelliti, Anne-Clémence Corminboeuf, Holger Frauenrath, Stephen Schrettl, Roman Niklaus Marty, Tobias Hoheisel

Packing constraints and precise placement of functional groups are the reason that organic molecules in the crystalline state often display unusual physical or chemical properties not observed in solution. Here we report a single-crystal-to-single-crystal ...

Nature Publishing Group2013

Low-temperature Preparation of Functional Carbon Nanocapsules via Self-assembly and Carbonization of Hexayne Amphiphiles

Holger Frauenrath, Stephen Schrettl

Swiss Chemical Soc2013

Elements for a Rational Polymer Approach towards Carbon Nanostructures

Holger Frauenrath, Stephen Schrettl

Wiley-VCH Verlag GmbH2012

Nanostructured Carbonaceous Materials from Molecular Precursors

Holger Frauenrath, Stephen Schrettl, Tobias Hoheisel, Ruth Szilluweit

Nanostructured carbonaceous materials, that is, carbon materials with a feature size on the nanometer scale and, in some cases, functionalized surfaces, already play an important role in a wide range of emerging fields, such as the search for novel energy ...

Wiley-VCH Verlag GmbH2010