Dispersion of Few-Layer Black Phosphorus in Binary Polymer Blend and Block Copolymer Matrices.
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| Title: | Dispersion of Few-Layer Black Phosphorus in Binary Polymer Blend and Block Copolymer Matrices. |
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| Authors: | Coiai, Serena1 (AUTHOR) elisa.passaglia@pi.iccom.cnr.it, Passaglia, Elisa1 (AUTHOR) simop93@hotmail.it, Pinna, Simone1 (AUTHOR) stefano.legnaioli@pi.iccom.cnr.it, Legnaioli, Stefano1 (AUTHOR) silvia.borsacchi@pi.iccom.cnr.it, Borsacchi, Silvia1,2 (AUTHOR) francesca.cicogna@pi.iccom.cnr.it, Dinelli, Franco3 (AUTHOR) franco.dinelli@ino.cnr.it, Ferretti, Anna Maria4 (AUTHOR) anna.ferretti@scitec.cnr.it, Caporali, Maria5 (AUTHOR) maria.caporali@iccom.cnr.it, Serrano-Ruiz, Manuel5 (AUTHOR) manuel.serrano@iccom.cnr.it, Peruzzini, Maurizio5 (AUTHOR) maurizio.peruzzini@iccom.cnr.it, Cicogna, Francesca1 (AUTHOR) |
| Source: | Nanomaterials (2079-4991). Aug2021, Vol. 11 Issue 8, p1996. 1p. |
| Subjects: | Polymer blends, Block copolymers, Methyl methacrylate, Atomic force microscopy, Dispersion (Chemistry), Phosphorus |
| 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. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| 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. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 20794991 |
| DOI: | 10.3390/nano11081996 |
