Abstract
The remarkable efficiency of chemical reactions is the result of biological evolution, often involving confined water. Meanwhile, developments of bio-inspired systems, which exploit the potential of such water, have been so far rather complex and cumbersome. Here we show that surface-confined water, inherently present in widely abundant and renewable cellulosic fibres can be utilised as nanomedium to endow a singular chemical reactivity. Compared to surface acetylation in the dry state, confined water increases the reaction rate and efficiency by 8 times and 30%, respectively. Moreover, confined water enables control over chemical accessibility of selected hydroxyl groups through the extent of hydration, allowing regioselective reactions, a major challenge in cellulose modification. The reactions mediated by surface-confined water are sustainable and largely outperform those occurring in organic solvents in terms of efficiency and environmental compatibility. Our results demonstrate the unexploited potential of water bound to cellulosic nanostructures in surface esterifications, which can be extended to a wide range of other nanoporous polymeric structures and reactions.
| Original language | English |
|---|---|
| Article number | 2513 |
| Number of pages | 8 |
| Journal | Nature Communications |
| Volume | 12 |
| Issue number | 1 |
| Early online date | 4 May 2021 |
| DOIs | |
| Publication status | Published - Dec 2021 |
| MoE publication type | A1 Journal article-refereed |
Funding
We wish to acknowledge CSC—IT Centre for Science, Finland, and Finnish Grid and Cloud Infrastructure (persistent identifier urn:nbn:fi:research-infras-2016072533) for computational resources. We thank Dr. Markus Bacher, Dr. Sonja Schiehser and Dr. Caio G. Otoni for their support with NMR, GPC and DVS measurements, respectively. Dr. Blaise L. Tardy is acknowledged for helpful discussions and SEM measurement. This research was funded in whole, or in part, by the Austrian Science Fund (FWF) (J4356). For the purpose of open access, the author has applied a CC BY public copyright license to any Author Accepted Manuscript version arising from this submission. The authors thank the financial support from the Austrian Biorefinery Centre Tulln (ABCT), the Academy of Finland (Project # 311255, ‘WTF-Click-Nano’) and the H2020-ERC-2017-Advanced Grant ‘BioELCell’ (788489).
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
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Dive into the research topics of 'Unique reactivity of nanoporous cellulosic materials mediated by surface-confined water'. Together they form a unique fingerprint.Datasets
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Confined water-mediated surface-acetylation of cellulose: figure raw data, calibration curve and regioselectivty
Beaumont, M. (Creator), Jusner, P. (Creator), Gierlinger, N. (Creator), King, A. W. T. (Creator), Potthast, A. (Creator), Rojas Gaona, O. (Creator) & Rosenau, T. (Creator), figshare, 23 Feb 2021
DOI: 10.6084/m9.figshare.14096071.v2
Dataset
Projects
- 2 Finished
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BioELCell: Bioproducts Engineered from Lignocelluloses: from plants and upcycling to next generation materials
Rojas, O. (Principal investigator), Ressouche, E. (Project Member), Ajdary, R. (Project Member), Johansson, L.-S. (Project Member), Usai, L. (Project Member), Abidnejad, R. (Project Member), Tardy, B. (Project Member), Zhao, B. (Project Member), Greca, L. (Project Member), Bhattarai, M. (Project Member), Meng, Y. (Project Member), Majoinen, J. (Project Member), Zhu, Y. (Project Member), Klockars, K. (Project Member), Robertson, D. (Project Member), Reyes Torres, G. (Project Member), Kämäräinen, T. (Project Member), Dufau Mattos, B. (Project Member) & Zanjanizadeh Ezazi, N. (Project Member)
30/07/2018 → 31/07/2023
Project: EU: ERC grants
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Nano: Water-free, Low-Cost Click Modification and Oxidative Regeneration of (Nano)Celluloses
Sixta, H. (Principal investigator), Schlapp-Hackl, I. (Project Member), Sairanen, E. (Project Member), Moriam, M. K. (Project Member), Johansson, L.-S. (Project Member), Fang, W. (Project Member), Guizani, C. (Project Member) & Witos, J. (Project Member)
01/09/2017 → 31/08/2021
Project: Academy of Finland: Other research funding
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