Grafting photochromic spiropyran polymer brushes on graphene oxide surfaces <i>via</i> surface-initiated ring-opening metathesis polymerization

Li, BangSen; Zhu, Wenya; Liu, Jinrui; Sun, Shishu; Zhang, Yan; Zhang, DaShuai; Li, Chen; Shi, Jianjun; Shi, Zaifeng

doi:10.1039/d3ra08076e

RSC Adv.

2024

DOI: 10.1039/d3ra08076e

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Grafting photochromic spiropyran polymer brushes on graphene oxide surfaces via surface-initiated ring-opening metathesis polymerization

BangSen Li,

Wenya Zhu,

Jinrui Liu

et al.

Abstract: A practical “grafting-from” strategy is described to grow photochromic polymer brushes bearing spiropyran (SP) functional groups on graphene oxide (GO) surfaces via surface-initiated ring-opening metathesis polymerization (SI-ROMP).

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Cited by 2 publications

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Enhancing Photoswitchable Wetting Properties of Hydrophobic Porous Spiropyran Copolymer Surfaces Through Surface Roughness Engineering

Nekoonam,

Dreher,

Mayoussi

et al. 2024

Adv Materials Inter

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Surfaces with photoswitchable wettability are of great interest for various applications such as smart coatings or liquid condensation. The photochromic ring opening reaction of spiropyran (SP) to merocyanine (MC) implies a high dipole moment change, making it interesting for photo‐controlled wetting properties. In addition to the material chemistry, surface wettability is influenced by the surface topography. Porous SP copolymers with various micro‐/nanostructures, that is, different submicron roughness, are fabricated via polymerization‐induced phase separation. The influence of the surface topography on the photoswitchable wetting properties is studied. Surfaces with arithmetic mean roughness (Sa) below 150 nm exhibited a maximum static contact angle (SCA) photoswitch up to 16° from 124 ± 6° to 108 ± 4° upon UV exposure. While superhydrophobic surfaces with higher Sa (157 – 608 nm) showed an insignificant SCA switch. The latter surfaces have a SCA above 150° and low CA hysteresis indicating small and insufficient contact with SP/MC surface asperities for the switch. With the optimized surfaces, photo‐controlled water condensation is studied on microscale and showed that the condensate droplets merged faster, and formed larger droplets pinned to the original contact lines on surfaces switched to the less hydrophobic state.

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Enhancing Photoswitchable Wetting Properties of Hydrophobic Porous Spiropyran Copolymer Surfaces Through Surface Roughness Engineering

Nekoonam,

Dreher,

Mayoussi

et al. 2024

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

Preparation of light-responsive polyacrylamide/carboxymethyl chitosan composite aerogel and its adsorption performance for Li+

Wang,

Li,

Wang

et al. 2024

International Journal of Biological Macromolecules

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Grafting photochromic spiropyran polymer brushes on graphene oxide surfaces via surface-initiated ring-opening metathesis polymerization

Abstract: A practical “grafting-from” strategy is described to grow photochromic polymer brushes bearing spiropyran (SP) functional groups on graphene oxide (GO) surfaces via surface-initiated ring-opening metathesis polymerization (SI-ROMP).

Cited by 2 publications

References 37 publications

Enhancing Photoswitchable Wetting Properties of Hydrophobic Porous Spiropyran Copolymer Surfaces Through Surface Roughness Engineering

Enhancing Photoswitchable Wetting Properties of Hydrophobic Porous Spiropyran Copolymer Surfaces Through Surface Roughness Engineering

Preparation of light-responsive polyacrylamide/carboxymethyl chitosan composite aerogel and its adsorption performance for Li+

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