Multistage Reversible Tg Photomodulation and Hardening of Hydrazone-Containing Polymers

Sirun Yang; Jared D. Harris; Aloshious Lambai; Laura L. Jeliazkov; Gaurav Mohanty; Hao Zeng; Arri Priimagi; Ivan Aprahamian

doi:10.1021/jacs.1c07504

Multistage Reversible T_g Photomodulation and Hardening of Hydrazone-Containing Polymers

Sirun Yang, Jared D. Harris, Aloshious Lambai, Laura L. Jeliazkov, Gaurav Mohanty, Hao Zeng, Arri Priimagi, Ivan Aprahamian

Materials Science and Environmental Engineering

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

28 Citations (Scopus)

16 Downloads (Pure)

Abstract

The glass transition temperature (Tg) of a series of polyacrylate- and polymethacrylate-based polymers having bistable hydrazone photoswitches as pendants increases upon photoisomerization. The ensuing photohardening of the polymeric network was corroborated using nanoindentation measurements. The bistability of the switch allowed us to lock-in and sustain multiple Tg values in the same polymeric material as a function of the hydrazone switch's Z/E isomer ratio, even at elevated temperatures.

Original language	English
Pages (from-to)	16348–16353
Number of pages	6
Journal	Journal of the American Chemical Society
Volume	143
Issue number	40
DOIs	https://doi.org/10.1021/jacs.1c07504
Publication status	Published - 2021
Publication type	A1 Journal article-refereed

Publication forum classification

Publication forum level 3

ASJC Scopus subject areas

Catalysis
General Chemistry
Biochemistry
Colloid and Surface Chemistry

Access to Document

10.1021/jacs.1c07504

JACS Hydrazone-Polymer manuscript
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Cite this

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title = "Multistage Reversible Tg Photomodulation and Hardening of Hydrazone-Containing Polymers",

abstract = "The glass transition temperature (Tg) of a series of polyacrylate- and polymethacrylate-based polymers having bistable hydrazone photoswitches as pendants increases upon photoisomerization. The ensuing photohardening of the polymeric network was corroborated using nanoindentation measurements. The bistability of the switch allowed us to lock-in and sustain multiple Tg values in the same polymeric material as a function of the hydrazone switch's Z/E isomer ratio, even at elevated temperatures. ",

author = "Sirun Yang and Harris, {Jared D.} and Aloshious Lambai and Jeliazkov, {Laura L.} and Gaurav Mohanty and Hao Zeng and Arri Priimagi and Ivan Aprahamian",

note = "Funding Information: I.A. is grateful to Dartmouth College for the generous support through a Scholarly Innovation and Advancement Award. J.D.H. thanks the Dartmouth College Society of Fellows for their generous support. This work has been supported by the Academy of Finland Flagship Programme, Photonics Research and Innovation, Decision Number 321065. The work is partially conducted on the premises of Tampere Microscopy Center, which is gratefully acknowledged. Publisher Copyright: {\textcopyright} 2021 American Chemical Society.",

year = "2021",

doi = "10.1021/jacs.1c07504",

language = "English",

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journal = "Journal of the American Chemical Society",

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T1 - Multistage Reversible Tg Photomodulation and Hardening of Hydrazone-Containing Polymers

AU - Yang, Sirun

AU - Harris, Jared D.

AU - Lambai, Aloshious

AU - Jeliazkov, Laura L.

AU - Mohanty, Gaurav

AU - Zeng, Hao

AU - Priimagi, Arri

AU - Aprahamian, Ivan

N1 - Funding Information: I.A. is grateful to Dartmouth College for the generous support through a Scholarly Innovation and Advancement Award. J.D.H. thanks the Dartmouth College Society of Fellows for their generous support. This work has been supported by the Academy of Finland Flagship Programme, Photonics Research and Innovation, Decision Number 321065. The work is partially conducted on the premises of Tampere Microscopy Center, which is gratefully acknowledged. Publisher Copyright: © 2021 American Chemical Society.

PY - 2021

Y1 - 2021

N2 - The glass transition temperature (Tg) of a series of polyacrylate- and polymethacrylate-based polymers having bistable hydrazone photoswitches as pendants increases upon photoisomerization. The ensuing photohardening of the polymeric network was corroborated using nanoindentation measurements. The bistability of the switch allowed us to lock-in and sustain multiple Tg values in the same polymeric material as a function of the hydrazone switch's Z/E isomer ratio, even at elevated temperatures.

AB - The glass transition temperature (Tg) of a series of polyacrylate- and polymethacrylate-based polymers having bistable hydrazone photoswitches as pendants increases upon photoisomerization. The ensuing photohardening of the polymeric network was corroborated using nanoindentation measurements. The bistability of the switch allowed us to lock-in and sustain multiple Tg values in the same polymeric material as a function of the hydrazone switch's Z/E isomer ratio, even at elevated temperatures.

U2 - 10.1021/jacs.1c07504

DO - 10.1021/jacs.1c07504

M3 - Article

AN - SCOPUS:85117163960

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VL - 143

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EP - 16353

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JF - Journal of the American Chemical Society

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