Functionalized Cellulose Nanocrystal-Mediated Conjugated Polymer Aggregation
| Autor: | Miguel A. González, Bailey Risteen, Michael McBride, Brian V. Khau, Elsa Reichmanis, Guoyan Zhang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Materials science 02 engineering and technology Polymer Conjugated system 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Surface energy 0104 chemical sciences law.invention chemistry.chemical_compound Crystallinity chemistry Chemical engineering Nanocrystal law General Materials Science Polystyrene Cellulose Crystallization 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 11:25338-25350 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | Inducing the self-assembly of π-conjugated polymers into semicrystalline aggregates has been a topic of substantial interest in the field of organic electronics and is typically achieved using energy-intensive solution processing or postfilm deposition methods. Here, we demonstrate the ability of bioderived cellulose nanocrystals (CNCs) to act as structure-directing agents for the conjugated semiconducting polymer, poly(3-hexylthiophene) (P3HT). CNCs were grafted with polystyrene, P3HT or poly(N-isopropylacrylamide), and subsequently blended with P3HT in solution to study the effect on conjugated polymer self-assembly. The presence of polymer-grafted CNCs resulted in an increase in P3HT semicrystalline aggregate formation, the degree of which depended on the surface free energy of the grafted polymer. The time-dependent P3HT aggregation was characterized by UV–vis spectroscopy, and the resulting data was fit to the Avrami crystallization model. The surface energies of each additive were calculated via con... |
| Databáze: | OpenAIRE |
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