Photo-Triggered Charge Control Induces Dissociation of Complex Coacervates.
Saved in:
| Title: | Photo-Triggered Charge Control Induces Dissociation of Complex Coacervates. |
|---|---|
| Authors: | Kakitani, Rei1 (AUTHOR), Nishimura, Tomoya1 (AUTHOR), Vu, Thi Ngan1 (AUTHOR), Kizaki, Chisato1 (AUTHOR), Yusa, Shin-ichi1 (AUTHOR) yusa@eng.u-hyogo.ac.jp |
| Source: | Polymers (20734360). Mar2026, Vol. 18 Issue 6, p739. 14p. |
| Subjects: | Polyampholytes, Electrostatic interaction, Polymer structure, Photoexcitation, Polymers |
| Abstract: | In this study, we designed a statistical polyampholyte bearing cationic quaternary ammonium salts and anionic phosphate groups as pendant functionalities. In addition, small amounts of o-nitrobenzyl groups, which generate anionic species upon photoirradiation, were introduced into the pendant chains to prepare a photo-responsive polyampholyte via reversible addition-fragmentation chain transfer radical polymerization. By increasing the feed ratio of the cationic monomer during copolymerization, a polyampholyte with a net positive charge was obtained. Upon photoirradiation of the aqueous solution of this cationic polyampholyte, the fraction of negatively charged groups in the polymer increased, resulting in a decrease in the zeta potential from positive values to around 0 mV. When the photo-responsive cationic polyampholyte was mixed with an anionic polyelectrolyte, poly(2-acrylamido-2-methylpropanesulfonate) (PAMPS), in water, micrometer-sized coacervate droplets were formed via electrostatic interactions. Photoirradiation of the aqueous coacervate system increased the fraction of negative charges in the polyampholyte, thereby weakening the electrostatic interactions with anionic PAMPS and resulting in the dissociation of the coacervates. Overall, this study presents a design guideline for polymeric materials in which interpolymer electrostatic interactions can be controlled by light to induce the disappearance of coacervates. [ABSTRACT FROM AUTHOR] |
| Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| FullText | Links: – Type: pdflink Text: Availability: 1 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 192642040 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Photo-Triggered Charge Control Induces Dissociation of Complex Coacervates. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kakitani%2C+Rei%22">Kakitani, Rei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nishimura%2C+Tomoya%22">Nishimura, Tomoya</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Vu%2C+Thi+Ngan%22">Vu, Thi Ngan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kizaki%2C+Chisato%22">Kizaki, Chisato</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yusa%2C+Shin-ichi%22">Yusa, Shin-ichi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yusa@eng.u-hyogo.ac.jp</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Mar2026, Vol. 18 Issue 6, p739. 14p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Polyampholytes%22">Polyampholytes</searchLink><br /><searchLink fieldCode="DE" term="%22Electrostatic+interaction%22">Electrostatic interaction</searchLink><br /><searchLink fieldCode="DE" term="%22Polymer+structure%22">Polymer structure</searchLink><br /><searchLink fieldCode="DE" term="%22Photoexcitation%22">Photoexcitation</searchLink><br /><searchLink fieldCode="DE" term="%22Polymers%22">Polymers</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In this study, we designed a statistical polyampholyte bearing cationic quaternary ammonium salts and anionic phosphate groups as pendant functionalities. In addition, small amounts of o-nitrobenzyl groups, which generate anionic species upon photoirradiation, were introduced into the pendant chains to prepare a photo-responsive polyampholyte via reversible addition-fragmentation chain transfer radical polymerization. By increasing the feed ratio of the cationic monomer during copolymerization, a polyampholyte with a net positive charge was obtained. Upon photoirradiation of the aqueous solution of this cationic polyampholyte, the fraction of negatively charged groups in the polymer increased, resulting in a decrease in the zeta potential from positive values to around 0 mV. When the photo-responsive cationic polyampholyte was mixed with an anionic polyelectrolyte, poly(2-acrylamido-2-methylpropanesulfonate) (PAMPS), in water, micrometer-sized coacervate droplets were formed via electrostatic interactions. Photoirradiation of the aqueous coacervate system increased the fraction of negative charges in the polyampholyte, thereby weakening the electrostatic interactions with anionic PAMPS and resulting in the dissociation of the coacervates. Overall, this study presents a design guideline for polymeric materials in which interpolymer electrostatic interactions can be controlled by light to induce the disappearance of coacervates. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=192642040 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/polym18060739 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 739 Subjects: – SubjectFull: Polyampholytes Type: general – SubjectFull: Electrostatic interaction Type: general – SubjectFull: Polymer structure Type: general – SubjectFull: Photoexcitation Type: general – SubjectFull: Polymers Type: general Titles: – TitleFull: Photo-Triggered Charge Control Induces Dissociation of Complex Coacervates. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kakitani, Rei – PersonEntity: Name: NameFull: Nishimura, Tomoya – PersonEntity: Name: NameFull: Vu, Thi Ngan – PersonEntity: Name: NameFull: Kizaki, Chisato – PersonEntity: Name: NameFull: Yusa, Shin-ichi IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 03 Text: Mar2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 20734360 Numbering: – Type: volume Value: 18 – Type: issue Value: 6 Titles: – TitleFull: Polymers (20734360) Type: main |
| ResultId | 1 |
