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Customer publications

Customer publications

Densely grafted liquid crystalline copper phthalocyanine side chain polymer: synthesis and characterization

Heinrich, C. David; Kostakoğlu, Sinem Tuncel; Thelakkat, Mukundan

A new polymeric donor material with pendant copper phthalocyanine side chains (PCuPc) was synthesized. The excellent suitability of a grafting-to approach, combining the controlled radical polymerization of propargyloxystyrene followed by “click” chemistry, was demonstrated. A polymer with a high molecular weight (Mn = 88 000 g mol−1) and a narrow…
Xenocs
12 March 2019
Customer publications

Ion Transport in Glassy Polymerized Ionic Liquids: Unraveling the Impact of the Molecular Structure

Heres, Maximilian; Cosby, Tyler; Mapesa, Emmanuel Urandu; Liu, Hongjun; Berdzinski, Stefan; Strehmel, Veronika; Dadmun, Mark; Paddison, Stephen J.; Sangoro, Joshua

The impact of molecular structure on ion dynamics and morphology in ammonium- and imidazolium-based glassy polymerized ionic liquids (polyILs) is investigated using broadband dielectric spectroscopy (BDS), wide-angle X-ray scattering (WAXS), and classical molecular dynamics (MD) simulations. It is shown that ammonium-based polyILs exhibit higher dc ionic conductivity at their respective…
Xenocs
12 March 2019
Customer publications

Photoluminescence enhancement via microwave irradiation of carbon quantum dots derived from solvothermal synthesis of L-arginine

Omer, Khalid M.; Aziz, Kosar H. Hama; Salih, Yousif M.; Tofiq, Diary I.; Hassan, Aso Q.

Photoluminescence enhancement of carbon quantum dots was achieved via solvothermal synthesis followed by microwave irradiation. Nitrogen and phosphorous doped carbon quantum dots were prepared by solvothermal heating of L-arginine with phosphoric acid for 12 hours followed by microwave irradiation for 3 minutes. The photoluminescence enhancement was nearly two fold after…
Xenocs
12 March 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCrystalline fractionCustomer publicationsGIWAXSMaterialRenewable energyTechniqueThin films

The effect of side-chain substitution on the aggregation and photovoltaic performance of diketopyrrolopyrrole-alt-dicarboxylic ester bithiophene polymers

Heuvel, Ruurd; Colberts, Fallon J. M.; Li, Junyu; Wienk, Martijn M.; Janssen, René A. J.

Using a dicarboxylic ester bithiophene (DCBT) co-monomer, electron-withdrawing ester groups are introduced on the two central thiophene rings of an alternating donor–acceptor polymer (PDPP4T) consisting of diketopyrrolopyrrole (DPP) and quaterthiophene (4T) to increase the oxidation potential and reduce the photon energy loss in solar cells. To counteract the increased solubility…
Xenocs
12 March 2019