Flower-like colloidal particles through precipitation polymerization of redox responsive liquid crystals

Xiaohong Liu; Mohammad Moradi; A.B.P. (Tom) Bus; Michael G. Debije; Stefan A.F. Bon; J.P.A. (Hans) Heuts; Albert P.H.J. Schenning

doi:10.1002/anie.202111521

Flower-like colloidal particles through precipitation polymerization of redox responsive liquid crystals

Xiaohong Liu
, Mohammad Moradi
, A.B.P. (Tom) Bus
, Michael G. Debije
, Stefan A.F. Bon
, J.P.A. (Hans) Heuts
, Albert P.H.J. Schenning (Corresponding author)

Research output: Contribution to journal › Article › Academic › peer-review

16 Citations (Scopus)

166 Downloads (Pure)

Abstract

We report on the synthesis of monodisperse, flower-like, liquid crystalline (LC) polymer particles by precipitation polymerization of a LC mixture consisting of benzoic acid-functionalized acrylates and disulfide-functionalized diacrylates. Introduction of a minor amount of redox-responsive disulfide-functionalized diacrylates (≤10 wt %) induced the formation of flower-like shapes. The shape of the particles can be tuned from flower- to disk-like to spherical by elevating the polymerization temperature. The solvent environment also has a pronounced effect on the particle size. Time-resolved TEM reveals that the final particle morphology was formed in the early stages of the polymerization and that subsequent polymerization resulted in continued particle growth without affecting the morphology. Finally, the degradation of the particles under reducing conditions was much faster for flower-like particles than for spherical particles, likely a result of their higher surface-to-volume ratio.

Original language	English
Pages (from-to)	27026-27030
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	60
Issue number	52
Early online date	21 Oct 2021
DOIs	https://doi.org/10.1002/anie.202111521
Publication status	Published - 20 Dec 2021

Funding

The authors thank Jie Liu, Dr. Xianwen Lou, and Dr. Johan Lub for the MS measurements and discussions, and Sean Lugger for the X‐ray measurements. We are grateful for the financial support by the Netherlands Organization for Scientific Research (TOP‐PUNT 718.016.003)

Funders	Funder number
Nederlandse Organisatie voor Wetenschappelijk Onderzoek	TOP‐PUNT 718.016.003

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title = "Flower-like colloidal particles through precipitation polymerization of redox responsive liquid crystals",

abstract = "We report on the synthesis of monodisperse, flower-like, liquid crystalline (LC) polymer particles by precipitation polymerization of a LC mixture consisting of benzoic acid-functionalized acrylates and disulfide-functionalized diacrylates. Introduction of a minor amount of redox-responsive disulfide-functionalized diacrylates (≤10 wt \%) induced the formation of flower-like shapes. The shape of the particles can be tuned from flower- to disk-like to spherical by elevating the polymerization temperature. The solvent environment also has a pronounced effect on the particle size. Time-resolved TEM reveals that the final particle morphology was formed in the early stages of the polymerization and that subsequent polymerization resulted in continued particle growth without affecting the morphology. Finally, the degradation of the particles under reducing conditions was much faster for flower-like particles than for spherical particles, likely a result of their higher surface-to-volume ratio.",

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AU - Liu, Xiaohong

AU - Moradi, Mohammad

AU - Bus, A.B.P. (Tom)

AU - Debije, Michael G.

AU - Bon, Stefan A.F.

AU - Heuts, J.P.A. (Hans)

AU - Schenning, Albert P.H.J.

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AB - We report on the synthesis of monodisperse, flower-like, liquid crystalline (LC) polymer particles by precipitation polymerization of a LC mixture consisting of benzoic acid-functionalized acrylates and disulfide-functionalized diacrylates. Introduction of a minor amount of redox-responsive disulfide-functionalized diacrylates (≤10 wt %) induced the formation of flower-like shapes. The shape of the particles can be tuned from flower- to disk-like to spherical by elevating the polymerization temperature. The solvent environment also has a pronounced effect on the particle size. Time-resolved TEM reveals that the final particle morphology was formed in the early stages of the polymerization and that subsequent polymerization resulted in continued particle growth without affecting the morphology. Finally, the degradation of the particles under reducing conditions was much faster for flower-like particles than for spherical particles, likely a result of their higher surface-to-volume ratio.

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JO - Angewandte Chemie - International Edition

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IS - 52

ER -

Flower-like colloidal particles through precipitation polymerization of redox responsive liquid crystals

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