Synergistic photoactuation of bilayered spiropyran hydrogels for predictable origami-like shape change

Chuang Li; Yeguang Xue; Mengdi Han; Liam C. Palmer; John A. Rogers; Yonggang Huang; Samuel I. Stupp

doi:10.1016/j.matt.2021.01.016

Synergistic photoactuation of bilayered spiropyran hydrogels for predictable origami-like shape change

Chuang Li, Yeguang Xue, Mengdi Han, Liam C. Palmer, John A. Rogers, Yonggang Huang^*, Samuel I. Stupp^*

^*Corresponding author for this work

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

77 Scopus citations

Abstract

A grand challenge for materials science is the development of biomimetic soft matter that emulates behaviors of living creatures in response to an energy input. Photoresponsive hydrogels are particularly attractive in this context because they can expand or contract in response to light through reversible changes in molecular structure and internal water content. Using hydrogels developed recently in our laboratory, which expand with light exposure, and previously known ones that contract, we report here on the synergistic faster bending actuation of bilayered hydrogels with opposite response to light. We also show that constructs with chemically connected sequences of bilayer and photoinactive hydrogels undergo reversible and predictable origami-like 3D shape changes as well as unidirectional walking motion when exposed to light and dark periods. This work advances our ability to design molecularly life-like behavior in robotic soft materials responding to external stimuli.

Original language	English (US)
Pages (from-to)	1377-1390
Number of pages	14
Journal	Matter
Volume	4
Issue number	4
DOIs	https://doi.org/10.1016/j.matt.2021.01.016
State	Published - Apr 7 2021

Funding

This work was fully supported by the Center for Bio-Inspired Energy Science (CBES), an Energy Frontier Research Center funded by the U.S. Department of Energy (DOE), Office of Science , Basic Energy Sciences under award no. DE-SC0000989. This work made use of the IMSERC at Northwestern University, which has received support from the NIH ( 1S10OD012016-01 / 1S10RR019071-01A1 ), Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource ( NSF ECCS-1542205 ), the State of Illinois , and the International Institute for Nanotechnology (IIN). This work made use of the MatCI Facility, which receives support from the MRSEC program ( NSF DMR-1720139) of the Materials Research Center at Northwestern University . This work made use of the EPIC facility of Northwestern University's NUANCE Center, which has received support from SHyNE Resource (NSF ECCS-1542205); the MRSEC program (NSF DMR-1720139) at the Materials Research Center; the IIN; the Keck Foundation; and the State of Illinois, through the IIN. We thank Nicholas A. Sather for helpful discussion and Mark Seniw for providing schematic illustrations.

Keywords

MAP4: Demonstrate
bilayers
hydrogels
locomotion
origami
photoactuation
photocontraction
photoexpansion
photoswitches
spiropyran
synergistic actuation

ASJC Scopus subject areas

General Materials Science

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10.1016/j.matt.2021.01.016

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title = "Synergistic photoactuation of bilayered spiropyran hydrogels for predictable origami-like shape change",

abstract = "A grand challenge for materials science is the development of biomimetic soft matter that emulates behaviors of living creatures in response to an energy input. Photoresponsive hydrogels are particularly attractive in this context because they can expand or contract in response to light through reversible changes in molecular structure and internal water content. Using hydrogels developed recently in our laboratory, which expand with light exposure, and previously known ones that contract, we report here on the synergistic faster bending actuation of bilayered hydrogels with opposite response to light. We also show that constructs with chemically connected sequences of bilayer and photoinactive hydrogels undergo reversible and predictable origami-like 3D shape changes as well as unidirectional walking motion when exposed to light and dark periods. This work advances our ability to design molecularly life-like behavior in robotic soft materials responding to external stimuli.",

keywords = "MAP4: Demonstrate, bilayers, hydrogels, locomotion, origami, photoactuation, photocontraction, photoexpansion, photoswitches, spiropyran, synergistic actuation",

author = "Chuang Li and Yeguang Xue and Mengdi Han and Palmer, {Liam C.} and Rogers, {John A.} and Yonggang Huang and Stupp, {Samuel I.}",

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AU - Li, Chuang

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AU - Han, Mengdi

AU - Palmer, Liam C.

AU - Rogers, John A.

AU - Huang, Yonggang

AU - Stupp, Samuel I.

PY - 2021/4/7

Y1 - 2021/4/7

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KW - MAP4: Demonstrate

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KW - hydrogels

KW - locomotion

KW - origami

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KW - photoexpansion

KW - photoswitches

KW - spiropyran

KW - synergistic actuation

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Synergistic photoactuation of bilayered spiropyran hydrogels for predictable origami-like shape change

Abstract

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Keywords

ASJC Scopus subject areas

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