Light-Triggered Reversible Self-Engulfing of Janus Nanoparticles

Xiaojuan Hou; Song Guan; Ting Qu; Xuefei Wu; Dong Wang; Aihua Chen; Zhenzhong Yang

doi:10.1021/acsmacrolett.8b00750

Light-Triggered Reversible Self-Engulfing of Janus Nanoparticles

Xiaojuan Hou
, Song Guan
, Ting Qu
, Xuefei Wu
, Dong Wang
, Aihua Chen^*
, Zhenzhong Yang

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University
Beijing University of Chemical Technology
Tsinghua University

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

45 Scopus citations

Abstract

Block copolymers containing azobenzene liquid crystalline (LC) mesogen are used to prepare snowman-like Janus nanoparticles (NPs) by emulsion solvent evaporation. The azobenzene-containing poly(methacrylate) (PMAAz) head of the Janus NPs is in the smectic LC phase with ordered stripes, which becomes amorphous and enlarged due to trans/cis transformation under UV irradiation. The expanded PMAAz can consequently engulf the other head. The self-engulfed NPs can recover to their original state in both shape and LC state via visible-light irradiation. This strategy is promising for programmable load and release of different payloads by remote trigger using light.

Original language	English
Pages (from-to)	1475-1479
Number of pages	5
Journal	ACS Macro Letters
Volume	7
Issue number	12
DOIs	https://doi.org/10.1021/acsmacrolett.8b00750
State	Published - 18 Dec 2018

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title = "Light-Triggered Reversible Self-Engulfing of Janus Nanoparticles",

abstract = "Block copolymers containing azobenzene liquid crystalline (LC) mesogen are used to prepare snowman-like Janus nanoparticles (NPs) by emulsion solvent evaporation. The azobenzene-containing poly(methacrylate) (PMAAz) head of the Janus NPs is in the smectic LC phase with ordered stripes, which becomes amorphous and enlarged due to trans/cis transformation under UV irradiation. The expanded PMAAz can consequently engulf the other head. The self-engulfed NPs can recover to their original state in both shape and LC state via visible-light irradiation. This strategy is promising for programmable load and release of different payloads by remote trigger using light.",

author = "Xiaojuan Hou and Song Guan and Ting Qu and Xuefei Wu and Dong Wang and Aihua Chen and Zhenzhong Yang",

note = "Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

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T1 - Light-Triggered Reversible Self-Engulfing of Janus Nanoparticles

AU - Hou, Xiaojuan

AU - Guan, Song

AU - Qu, Ting

AU - Wu, Xuefei

AU - Wang, Dong

AU - Chen, Aihua

AU - Yang, Zhenzhong

PY - 2018/12/18

Y1 - 2018/12/18

N2 - Block copolymers containing azobenzene liquid crystalline (LC) mesogen are used to prepare snowman-like Janus nanoparticles (NPs) by emulsion solvent evaporation. The azobenzene-containing poly(methacrylate) (PMAAz) head of the Janus NPs is in the smectic LC phase with ordered stripes, which becomes amorphous and enlarged due to trans/cis transformation under UV irradiation. The expanded PMAAz can consequently engulf the other head. The self-engulfed NPs can recover to their original state in both shape and LC state via visible-light irradiation. This strategy is promising for programmable load and release of different payloads by remote trigger using light.

AB - Block copolymers containing azobenzene liquid crystalline (LC) mesogen are used to prepare snowman-like Janus nanoparticles (NPs) by emulsion solvent evaporation. The azobenzene-containing poly(methacrylate) (PMAAz) head of the Janus NPs is in the smectic LC phase with ordered stripes, which becomes amorphous and enlarged due to trans/cis transformation under UV irradiation. The expanded PMAAz can consequently engulf the other head. The self-engulfed NPs can recover to their original state in both shape and LC state via visible-light irradiation. This strategy is promising for programmable load and release of different payloads by remote trigger using light.

UR - https://www.scopus.com/pages/publications/85058776962

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SN - 2161-1653

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SP - 1475

EP - 1479

JO - ACS Macro Letters

JF - ACS Macro Letters

IS - 12

ER -

Light-Triggered Reversible Self-Engulfing of Janus Nanoparticles

Abstract

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