Installation of the adamantyl group in polystyrene-<i>block</i>-poly(methyl methacrylate) <i>via</i> Friedel–Crafts alkylation to modulate the microphase-separated morphology and dimensions

Isono, Takuya; Baba, Ema; Tanaka, Shunma; Miyagi, Ken; Dazai, Takahiro; Li, Feng; Yamamoto, Takuya; Tajima, K.; Satoh, Toshifumi

doi:10.1039/d3py00113j

Polym. Chem.

2023

DOI: 10.1039/d3py00113j

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Installation of the adamantyl group in polystyrene-block-poly(methyl methacrylate) via Friedel–Crafts alkylation to modulate the microphase-separated morphology and dimensions

Takuya Isono

Ema Baba

Shunma Tanaka

et al.

Abstract: Although polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) is the most widely employed template and scaffold for constructing nanoscale patterns, its relatively small Flory–Huggins interaction parameter makes it challenging to realize microphase-separated structures with...

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Post-Polymerization Modification of Polystyrene through Mn-Catalyzed Phosphorylation of Aromatic C(sp²)–H Bonds

Liu,

Lin,

Zou

et al. 2024

ACS Appl. Polym. Mater.

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The high flammability and lack of charrability of polystyrene (PS) pose significant limitations on its broader applications. Therefore, there is an urgent need for a straightforward and efficient method for the synthesis of flame-retardant PS, which still poses a considerable challenge. In this study, we present an efficient approach to enhance the flame-retardant properties of PS through direct phosphorylation of aromatic C(sp 2 )−H bonds using commercially available and inexpensive manganese catalyst. A range of phosphonates served as reactive substrates to enable a tunable degree of polymer functionalization. The corresponding phosphorylated PS specimens were determined by means of 1 H NMR, 31 P NMR, FTIR spectroscopy, and size exclusion chromatography. Microscale combustion calorimetry tests indicate that this protocol indeed enhances the flame-retardant performance of PS. Moreover, other advantages associated with the incorporation of the phosphonate group have been observed, including maintained thermal resistance and improved wettability. This cost-effective strategy of Mn-catalyzed C−H can also be utilized to directly obtain phosphonate modification of waste foamed PS and styrene acrylonitrile copolymer, providing a method for the purpose of recycling and upgrading PS plastics.

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Post-Polymerization Modification of Polystyrene through Mn-Catalyzed Phosphorylation of Aromatic C(sp²)–H Bonds

Liu,

Lin,

Zou

et al. 2024

ACS Appl. Polym. Mater.

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show abstract

Functional Group Influence on Block Copolymer Segment Interactions: An Analysis via Flory–Huggins and Hansen Solubility Parameters

Lin,

Hatakeyama-Sato,

Nabae

et al. 2024

J. Photopol. Sci. Technol.

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Installation of the adamantyl group in polystyrene-block-poly(methyl methacrylate) via Friedel–Crafts alkylation to modulate the microphase-separated morphology and dimensions

Abstract: Although polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) is the most widely employed template and scaffold for constructing nanoscale patterns, its relatively small Flory–Huggins interaction parameter makes it challenging to realize microphase-separated structures with...

Cited by 2 publications

References 45 publications

Post-Polymerization Modification of Polystyrene through Mn-Catalyzed Phosphorylation of Aromatic C(sp²)–H Bonds

Post-Polymerization Modification of Polystyrene through Mn-Catalyzed Phosphorylation of Aromatic C(sp²)–H Bonds

Functional Group Influence on Block Copolymer Segment Interactions: An Analysis via Flory–Huggins and Hansen Solubility Parameters

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Installation of the adamantyl group in polystyrene-block-poly(methyl methacrylate) via Friedel–Crafts alkylation to modulate the microphase-separated morphology and dimensions

Abstract: Although polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) is the most widely employed template and scaffold for constructing nanoscale patterns, its relatively small Flory–Huggins interaction parameter makes it challenging to realize microphase-separated structures with...

Cited by 2 publications

References 45 publications

Post-Polymerization Modification of Polystyrene through Mn-Catalyzed Phosphorylation of Aromatic C(sp2)–H Bonds

Post-Polymerization Modification of Polystyrene through Mn-Catalyzed Phosphorylation of Aromatic C(sp2)–H Bonds

Functional Group Influence on Block Copolymer Segment Interactions: An Analysis via Flory–Huggins and Hansen Solubility Parameters

Contact Info

Product

Resources

About

Post-Polymerization Modification of Polystyrene through Mn-Catalyzed Phosphorylation of Aromatic C(sp²)–H Bonds

Post-Polymerization Modification of Polystyrene through Mn-Catalyzed Phosphorylation of Aromatic C(sp²)–H Bonds