1,721,033 research outputs found
On the" true" structure pf push-pull type low-bandgap polymers for organic photovoltaics
No full textAn efficient and simple tool for assessing singlet oxygen involvement in the photo-oxidation of conjugated materials
No full textSynthesis of a multifunctional poly(p-phenylene ethynylene) scaffold with clickable azidecontaining side chains for (bio)sensor applications
No full textPoly(p-phenylene ethynylene) (PPE) copolymers with alternating alkoxy and azide-functionalized alkoxy side chains were efficiently synthesized via Sonogashira polymerization and the materials were fully characterized. Among the different synthetic protocols investigated, the best results were obtained when
employing a pre-polymerization functionalization approach and upon implementing the azide-functionalized side chains on the diiodophenyl building block. End-capping of the conjugated polymer chains is shown to be essential for preventing side reactions. As a proof of principle, phenylacetylene is clicked in a nearly quantitative way on the polymer backbone. Furthermore, successful click-immobilization of randomly alkynylated protein A onto an azide-functionalized PPE film illustrates the potential use of these materials in a variety of (bio)sensor applications.The authors thank Hasselt University, the Research Foundation - Flanders (FWO) and the Science Policy Office of the Belgian Federal Government (BELSPO; IAP 7/05 project FS2) for continuous financial support. Y. Braeken and P. Verstappen acknowledge the Agency for Innovation by Science and Technology in Flanders (IWT) for their PhD grants. The authors are grateful to H. Penxten for performing the CV measurements, P. Losada-Perez for assistance with the QCM experiments and D. T. Ta for his help with the alkynylated SpA synthesis. We also wish to thank Bruno Van Mele and his group members (Maxime Defour and Niko Van den Brande) at the Vrije Universiteit Brussel for the thermal analysis (RHC) experiments. We further acknowledge Hercules for providing funding for the MALDI-TOF and LTQ Orbitrap Velos Pro mass spectrometers
Synthesis of a multifunctional poly(p-phenylene ethynylene) scaffold with clickable azide-containing side chains for (bio)sensor applications
No full textHomocoupling defects of a small donor molecule for organic photovoltaics: Quantification of the eutectic state diagram by rapid heat-cool differential scanning calorimetry
No full textExtracting Structural Data from MALDI-ToF Mass Spectrometry Analysis of Alternating Conjugated Polymers - A Case Study on PBTTT Derivatives
No full textThe authors thank the FWO Vlaanderen for continuing financial support (Ph.D. grant J.V. 1S50822N, postdoc grant P.V. 12Y9418N, MALDI-ToF project I006320N, Scientific Research Community "Supramolecular Chemistry and Materials" W000620N
Continuous flow polymer synthesis toward reproducible large-scale production for efficient bulk heterojunction organic solar cells
No full textSynthetic routes toward asymmetrically substituted (functionalized) 4h-cyclopental (2,1-b:3,4-b')dithiophenes
No full textMolar mass versus polymer solar cells performance: Highlighting the role of homocouplings
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