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Jansen-van Vuuren RD, Naficy S, Ramezani M, Cunningham M, Jessop P. CO 2-responsive gels. Chem Soc Rev 2023; 52:3470-3542. [PMID: 37128844 DOI: 10.1039/d2cs00053a] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
CO2-responsive materials undergo a change in chemical or physical properties in response to the introduction or removal of CO2. The use of CO2 as a stimulus is advantageous as it is abundant, benign, inexpensive, and it does not accumulate in a system. Many CO2-responsive materials have already been explored including polymers, latexes, surfactants, and catalysts. As a sub-set of CO2-responsive polymers, the study of CO2-responsive gels (insoluble, cross-linked polymers) is a unique discipline due to the unique set of changes in the gels brought about by CO2 such as swelling or a transformed morphology. In the past 15 years, CO2-responsive gels and self-assembled gels have been investigated for a variety of emerging potential applications, reported in 90 peer-reviewed publications. The two most widely exploited properties include the control of flow (fluids) via CO2-triggered aggregation and their capacity for reversible CO2 absorption-desorption, leading to applications in Enhanced Oil Recovery (EOR) and CO2 sequestration, respectively. In this paper, we review the preparation, properties, and applications of these CO2-responsive gels, broadly classified by particle size as nanogels, microgels, aerogels, and macrogels. We have included a section on CO2-induced self-assembled gels (including poly(ionic liquid) gels).
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Affiliation(s)
- Ross D Jansen-van Vuuren
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Sina Naficy
- School of Chemical and Biomolecular Engineering, Centre for Excellence in Advanced Food Enginomics (CAFE), The University of Sydney, Sydney, NSW 2006, Australia
| | - Maedeh Ramezani
- Department of Chemistry, Chernoff Hall, Queen's University, Kingston, Ontario, K7K 2N1, Canada.
| | - Michael Cunningham
- Department of Engineering, Dupuis Hall, Queen's University, Kingston, Ontario, K7L 3N6, Canada
| | - Philip Jessop
- Department of Chemistry, Chernoff Hall, Queen's University, Kingston, Ontario, K7K 2N1, Canada.
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Liu D, Deng G, Zhao Y, Zhang Y, Wang Z, Huang Z, Wang L. Alkane-tolerant worm-like micelles based on assembled surfactants. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Baldelli A, Boraey MA, Oguzlu H, Cidem A, Pascual Rodriguez A, Xin Ong H, Jiang F, Bacca M, Thamboo A, Traini D, Pratap-Singh A. Engineered nasal dry powder for the encapsulation of bioactive compounds. Drug Discov Today 2022; 27:2300-2308. [PMID: 35452791 DOI: 10.1016/j.drudis.2022.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/28/2022] [Accepted: 04/11/2022] [Indexed: 11/25/2022]
Abstract
In this review, we present the potential of nasal dry powders to deliver stable bioactive compounds and their manufacture using spray-drying (SD) techniques to achieve encapsulation. We also review currently approved and experimental excipients used for powder manufacturing for specific target drugs. Polymers, sugars, and amino acids are recommended for specific actions, such as mucoadhesive interactions, to increase residence time on the nasal mucosa; for example, high-molecular weight polymers, such as hydroxypropyl methylcellulose, or mannitol, which protect the bioactive compounds, increase their stability, and enhance drug absorption in the nasal mucosa; and leucine, which promotes particle formation and improves aerosol performance. Teaser: XXXX.
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Affiliation(s)
- Alberto Baldelli
- Faculty of Land and Food Systems, The University of British Columbia, BC, Canada.
| | - Mohammed A Boraey
- Mechanical Power Engineering Department, Zagazig University, Zagazig, 44519, Egypt; Smart Engineering Systems Research Center (SESC), Nile University, Giza, 12588, Egypt.
| | - Hale Oguzlu
- Department of Forestry, University of British Columbia, BC, Canada
| | - Aylin Cidem
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, NSW 2037, Australia
| | | | - Hui Xin Ong
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, NSW 2037, Australia; Department of Biomedical Sciences, Faculty of Medicine, Health and Human Sciences, Macquarie University, NSW 2109, Australia
| | - Feng Jiang
- Department of Forestry, University of British Columbia, BC, Canada
| | - Mattia Bacca
- Department of Mechanical Engineering, University of British Columbia, BC, Canada
| | - Andrew Thamboo
- Department of Surgery, The University of British Columbia, BC, Canada
| | - Daniela Traini
- Respiratory Technology, Woolcock Institute of Medical Research, Sydney, NSW 2037, Australia; Department of Biomedical Sciences, Faculty of Medicine, Health and Human Sciences, Macquarie University, NSW 2109, Australia
| | - Anubhav Pratap-Singh
- Faculty of Land and Food Systems, The University of British Columbia, BC, Canada
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