Publications de Andrea Gasperini

Engineering the self-assembly of diketopyrrolopyrrole-based molecular semiconductors via an aliphatic linker strategy

Kevin Sivula, Xavier Adrian Jeanbourquin, Andrea Gasperini, Xiaoyun Yu, Muhammad Aiman Bin Rahmanudin Hamdan, Nestor Guijarro Carratala, Emilie Aude Marie Ripaud

The solid-state self-assembly of molecular semiconductors is a key aspect for controlling the optoelectronic properties of organic electronic materials. Herein, we investigate the use of a flexible linker strategy to control the self-assembly of a solution ...

Royal Society of Chemistry2017

Semiconducting alternating multi-block copolymers via a di-functionalized macromonomer approach

Kevin Sivula, Xavier Adrian Jeanbourquin, Andrea Gasperini, Muhammad Aiman Bin Rahmanudin Hamdan, Nestor Guijarro Carratala, Liang Yao

The development of fully-conjugated semiconducting block-copolymers is an important goal for organic electronics, but to date has been almost exclusively limited to materials containing poly(3-alkylthiophenes). Here we present the prototype of a class of f ...

2017

Tailoring self-assembly and optoelectronic properties of organic semiconductors via macromolecular engineering

Andrea Gasperini

Conjugated polymers and small molecules are a promising class of semiconducting materials for application in macroelectronic and energy conversion devices. The development of high performance devices employing this class of semicrystalline materials ultima ...

EPFL2016

Effect of molecular weight in diketopyrrolopyrrole-based polymers in transistor and photovoltaic applications

Kevin Sivula, Xavier Adrian Jeanbourquin, Andrea Gasperini

Uncovering the precise effect of the conjugated polymer chain length on the semiconducting properties in thin-film devices is confounded by the step-growth polymerization techniques typically used. Here, we use preparatory size exclusion chromatography to ...

Wiley-Blackwell2016

Controlling conjugated polymer morphology and charge carrier transport with a flexible-linker approach

Kevin Sivula, Andrea Gasperini, Sébastien Jacky Daniel Bivaud

The Stille-coupling polymerization of a short conjugated polymer with an aliphatic linker was used to demonstrate a prototype in a new class of polymer semiconductors wherein the conjugation segment length and the length of the entire chain can be independ ...

Royal Soc Chemistry2014

Effects of Molecular Weight on Microstructure and Carrier Transport in a Semicrystalline Poly(thieno)thiophene

Kevin Sivula, Andrea Gasperini

The ultimate control over chain self-assembly is key to unravel and optimize the relationship between film microstructure and charge carrier mobility in solution processable conjugated polymer semiconductors. Here we employ preparatory size exclusion chrom ...

American Chemical Society2013