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- Title
Dispersion of Few-Layer Black Phosphorus in Binary Polymer Blend and Block Copolymer Matrices.
- Authors
Coiai, Serena; Passaglia, Elisa; Pinna, Simone; Legnaioli, Stefano; Borsacchi, Silvia; Dinelli, Franco; Ferretti, Anna Maria; Caporali, Maria; Serrano-Ruiz, Manuel; Peruzzini, Maurizio; Cicogna, Francesca
- Abstract
Exfoliated black phosphorus (bP) embedded into a polymer is preserved from oxidation, is stable to air, light, and humidity, and can be further processed into devices without degrading its properties. Most of the examples of exfoliated bP/polymer composites involve a single polymer matrix. Herein, we report the preparation of biphasic polystyrene/poly(methyl methacrylate) (50/50 wt.%) composites containing few-layer black phosphorus (fl-bP) (0.6–1 wt.%) produced by sonicated-assisted liquid-phase exfoliation. Micro-Raman spectroscopy confirmed the integrity of fl-bP, while scanning electron microscopy evidenced the influence of fl-bP into the coalescence of polymeric phases. Furthermore, the topography of thin films analyzed by atomic force microscopy confirmed the effect of fl-bP into the PS dewetting, and the selective PS etching of thin films revealed the presence of fl-bP flakes. Finally, a block copolymer/fl-bP composite (1.2 wt.%) was prepared via in situ reversible addition–fragmentation chain transfer (RAFT) polymerization by sonication-assisted exfoliation of bP into styrene. For this sample, 31P solid-state NMR and Raman spectroscopy confirmed an excellent preservation of bP structure.
- Subjects
POLYMER blends; BLOCK copolymers; METHYL methacrylate; ATOMIC force microscopy; DISPERSION (Chemistry); PHOSPHORUS
- Publication
Nanomaterials (2079-4991), 2021, Vol 11, Issue 8, p1996
- ISSN
2079-4991
- Publication type
Article
- DOI
10.3390/nano11081996