Photoswitchable nanocomposites made from coumarin-functionalized cellulose nanocrystals

Literature Information

Publication Date 2014-06-04
DOI 10.1039/C4PY00486H
Impact Factor 5.582
Authors

Mahesh V. Biyani, Christoph Weder, E. Johan Foster


View Original

Abstract

Coumarin derivatives can undergo dimerization reactions upon exposure to ultraviolet (UV) light with a wavelength of >300 nm. We exploited this effect to develop mechanically adaptive nanocomposites in which UV light can be used to change the material properties. Thus, cellulose nanocrystals (CNCs) derived from tunicates were functionalized with 7-coumaryl-(6-isocyanatohexyl) carbamate to afford coumarin-derivatized CNCs (Cou-CNCs). Light-responsive nanocomposites were prepared by reinforcing a rubbery ethylene oxide–epichlorohydrin copolymer (EO–EPI) matrix with Cou-CNCs. The as-prepared nanocomposites show a significantly increased tensile storage modulus (E′) in comparison to the neat EO–EPI. For example, E′ at 25 °C increased from 4 MPa to 199 MPa upon introduction of 10% w/w Cou-CNCs. E′ increased further to 291 MPa upon irradiation with 365 nm UV light, whereas control nanocomposites with neat CNCs did not display any significant increase in E′ under the same conditions. The optically induced reaction between Cou-CNCs also reduced the swelling of the EO–EPI/Cou-CNC nanocomposites upon exposure to water as well as the extent of water-induced softening.

Related Literature

In vitro antibacterial activity of oxide and non-oxide bioceramics for arthroplastic devices: II. Fourier transform infrared spectroscopy

Nami Toyama, Satoshi Horiguchi, Ryan M. Bock, Bryan J. McEntire, Tetsuya Adachi, Wenliang Zhu, Osam Mazda

2018-04-10 Paper

DOI: 10.1039/C8AN00234G

How iMALDI can improve clinical diagnostics

R. Popp, M. Basik, A. Spatz, G. Batist

2018-05-01 Minireview

DOI: 10.1039/C8AN00094H

A paper-based chemiluminescence immunoassay device for rapid and high-throughput detection of allergen-specific IgE

Xisi Han, Mengda Cao, Meirong Wu, Yu-Jie Wang, Changmin Yu, Chengwu Zhang, Haidong Yu, Ji-Fu Wei, Lin Li

2019-02-18 Paper

DOI: 10.1039/C8AN02020E

Integration of a 3D-printed read-out platform with a quantum dot-based immunoassay for detection of the avian influenza A (H7N9) virus‡

Meng Xiao, Liping Huang, Kaixin Xie, Haicong Shen, Caihong Huang, Wei Xiao, Meilin Jin

2019-02-19 Paper

DOI: 10.1039/C8AN02336K

Label-free density-based detection of adipocytes of bone marrow origin using magnetic levitation

Oyku Sarigil, Muge Anil-Inevi, Esra Yilmaz, Gulistan Mese, H. Cumhur Tekin, Engin Ozcivici

2019-03-11 Paper

DOI: 10.1039/C8AN02503G

Outstanding Reviewers for Analyst in 2017

2018-05-02 Editorial

DOI: 10.1039/C8AN90036A

Back cover

Cover

DOI: 10.1039/C8AN90040J

Standalone interferometry-based calibration of convex lens-induced confinement microscopy with nanoscale accuracy

Gregory T. Morrin, Daniel F. Kienle, Daniel K. Schwartz

2019-02-28 Paper

DOI: 10.1039/C8AN02300J

You might also like

Compound Q&A

What precautions should be taken when handling lithium chloride hydrate (1:1:1) (CAS: 16712-20-2)?

When handling lithium chloride hydrate (1:1:1) (CAS: 16712-20-2), it is importan...

16712-20-2Lithium chloride hyd...
Compound Q&A

Is 4-(4H-1,2,4-Triazol-4-yl)piperidine (CAS: 690261-92-8) safe?

4-(4H-1,2,4-Triazol-4-yl)piperidine is generally considered safe for use in phar...

690261-92-84-(4H-1,2,4-Triazol-...
Compound Q&A

How should waste containing 1,3-Thiazole-2-carboxamide (CAS: 16733-85-0) be handled?

Waste containing 1,3-Thiazole-2-carboxamide (CAS: 16733-85-0) should be collecte...

16733-85-01,3-Thiazole-2-carbo...
Compound Q&A

What regulatory guidelines apply to 5-(Difluoromethyl)-2-fluorobenzonitrile (CAS: 934175-58-3)?

5-(Difluoromethyl)-2-fluorobenzonitrile (CAS: 934175-58-3) is subject to regulat...

934175-58-35-(Difluoromethyl)-2...
Compound Q&A

How is Methyl 3-acetamido-2-thiophenecarboxylate (CAS: 22288-79-5) typically synthesized?

Methyl 3-acetamido-2-thiophenecarboxylate can be synthesized by the reaction of ...

22288-79-5Methyl 3-acetamido-2...
Compound Q&A

What is 4-Isoquinolinecarbonitrile (CAS: 34846-65-6)?

4-Isoquinolinecarbonitrile is a chemical compound with the CAS number 34846-65-6...

34846-65-64-Isoquinolinecarbon...
Compound Q&A

How should Methyl 1H-1,2,3-triazole-4-carboxylate (CAS: 877309-59-6) be stored?

Store Methyl 1H-1,2,3-triazole-4-carboxylate (CAS: 877309-59-6) in a cool, dry p...

877309-59-6Methyl 1H-1,2,3-tria...
Compound Q&A

What regulatory guidelines apply to 6-Bromo[1,3]thiazolo[5,4-b]pyridin-2-amine (CAS: 1160791-13-8)?

6-Bromo[1,3]thiazolo[5,4-b]pyridin-2-amine (CAS: 1160791-13-8) is subject to the...

1160791-13-86-Bromo[1,3]thiazolo...
Compound Q&A

Is (2S,3S)-2-Ammonio-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoate (CAS: 23651-95-8) safe?

(2S,3S)-2-Ammonio-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoate (CAS: 23651-95-8) ...

23651-95-8(2S,3S)-2-Ammonio-3-...
Compound Q&A

What are the physical and chemical properties of 7-bromo-3-methyl-3,4-dihydroquinazolin-4-one (CAS: 1293987-84-4)?

7-Bromo-3-methyl-3,4-dihydroquinazolin-4-one is a solid with a crystalline form....

1293987-84-47-bromo-3-methyl-3,4...

Source Journal

Polymer Chemistry

Polymer Chemistry
CiteScore: 8.6
Self-citation Rate: 7.3%
Articles per Year: 457

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.

Recommended Compounds

Recommended Suppliers

Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at support@chemtradehub.com. We will promptly review and address your concerns.