Coacervation between Two Positively Charged Poly(ionic liquid)s. Issue 18 (8th June 2022)

• Record Type: Journal Article
• Authors: Zhang, Chongrui; Cai, Yinmin; Zhao, Qiang
• Other Names: Li Zhong'an guestEditor.; Zhang Lianbin guestEditor.; Zhao Qiang guestEditor.; Zhu Jintao guestEditor.
• Is Part Of: Macromolecular rapid communications. Volume 43:Issue 18(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-06-08
• Subjects: cation‐π interaction -- coacervates -- like‐charge polyelectrolytes -- poly(ionic liquids); Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.202200191
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract: Complex coacervates are usually formed through electrostatic attraction between oppositely charged polyelectrolytes, with a few exceptions such as coacervates of like‐charge proteins and polyelectrolytes, both in vivo and in vitro. Understanding of the preparation and mechanisms of these coacervates is limited. Here, a positively charged poly(ionic liquid), poly(1‐vinyl‐3‐benzylimidazolium chloride) (PILben), is designed that bears benzene rings in repeating units. Fluidic coacervates are prepared by mixing the PILben aqueous solution with a like‐charge poly(ionic liquid) named poly(dimethyl diallyl ammonium chloride) (PDDA). The effects of polymer concentration, temperature, and ionic strength in the PILben‐PDDA coacervate are studied. Raman spectroscopy and 2D 1 H‐ 13 C heteronuclear single quantum coherence ( 1 H‐ 13 C HSQC) characterizations verify that the coacervate formation benefits from the cation‐ π interaction between PILben and PDDA. This work provides principles and understandings of designing coacervates derived from like‐charge poly(ionic liquids) with high charge density. Abstract : A poly(ionic liquid) bearing benzene rings is designed to facilitate facile preparation of coacervate between like charge polymers, providing a versatile platform of coacervate engineering. Phase behaviors of the coacervate are studied, with the cation‐ π driven force characterized in depth by 2D NMR and Raman spectroscopy.