In: Polymer Chemistry, 2019, vol. 10, no. 16, p. 2057–2063
This paper deals with the synthesis and investigation of comb-like poly(norbornene)s carrying lateral rod-like aramid groups. Two types of norbornene-based monomers were synthesized and copolymerized with a norbornene carrying an aliphatic side chain using ring opening metathesis polymerization (ROMP). The new monomers contain aramid derivatives that display different types of non-covalent...
|
In: Small, 2018, vol. 14, no. 46, p. 1802088
Amino groups presented on the surface of nanoparticles are well‐known to be a predominant factor in the formation of the protein corona and subsequent cellular uptake. However, the molecular mechanism underpinning this relationship is poorly defined. This study investigates how amine type and density affect the protein corona and cellular association of gold nanoparticles with cells in...
|
In: Plant Molecular Biology, 2006, vol. 61, no. 1-2, p. 345-356
|
In: New Journal of Chemistry, 2017, vol. 41, no. 13, p. 6025–6032
Efficient methods for the synthesis of dibenzophenanthroheptaphene (DBPH) and tetrabenzotriphenylenopyranthrene (TBTP) were developed. As a result, a series of unprecedented derivatives of DBPH (1a–c) and TBTP (2a–b) were conventionally obtained from the Scholl cyclodehydrogenation reaction of their respective tribenzopentaphene synthons. An alternative convergent synthesis of DBPH is also...
|
In: New Journal of Chemistry, 2016, vol. 40, no. 12, p. 10363–10370
Nine new derivatives of the trapezoidal tribenzopentaphene (TBP) polycyclic aromatic hydrocarbon (PAH) were synthesized via the Suzuki–Miyaura palladium catalyzed cross-coupling reaction. The novel TBP derivatives, which bear various rigid and flexible aromatic groups either at their more accessible (R1) or congested (R2) bases, were fully characterized using high resolution mass...
|
In: Supramolecular Chemistry, 2014, vol. 26, no. 2, p. 125–137
The thermotropic properties and self-assembly of two different series of hexa-peri-hexabenzocoronenes (HBC) bearing either linear or branched perfluoroalkylated side chains, each with a wide range of alkyl spacer and perfluorinated tail lengths, have been studied. Correlations between thermogravimetric analysis, differential scanning calorimetry, polarised optical microscopy and small-angle X-ray...
|
In: The Journal of Physical Chemistry A, 2012, vol. 117, no. 3, p. 616–625
Stacked dimers of four polycondensed aromatic hydrocarbons, with structures varying from high to reduced symmetries, have been calculated with dispersion-corrected density functional theory. The configurations of the stacked dimers are readily classified by two in-plane displacements and a relative rotation. The potential energy surface in these three coordinates was calculated with rigid...
|
Thèse de doctorat : Université de Fribourg, 2010.
The demand for electronic devices has exploded in the last few years. They are all around us and we use them everyday; TV, mobile phones, computers, etc. Most people could not imagine living without them. The presence of these devices has increased the consumption of electrical power and other resources such as silicon and petrol derivatives. This increase has itself created a demand for...
|
In: Synthesis, 2012, vol. 44, p. 1928-1934
We show the versatile synthesis of four tribenzopentaphene derivatives bearing alkyl side chains at three different positions. Substitutions on two of these positions led to subtle intensity changes at the lines of the blue emission, whereas alkylation in the bay region led to dimerization of the pentaphene derivative, resulting in a distortion of the chromophore geometry and an emission shift to...
|
Thèse de doctorat : Université de Fribourg, 2011.
Dans ce travail, nous allons présenter la synthèse d’un nouvel HBC perfluoroalkylé muni d’un acide sulfonique à la fin de l’une des chaînes perfluoroalkylé. Le but de l’introduction de cet acide est sa capacité à former de canaux à protons utilisable comme membrane dans des piles à combustible. Les canaux seraient créés par la formation de «stacks» de clusters de trois HBCs...
|
