» Articles » PMID: 38757442

Periodic Stratification of Colloids in a Liquid Phase Produced by a Precipitation Reaction and Gel Swelling

Overview
Journal Langmuir
Specialty Chemistry
Date 2024 May 17
PMID 38757442
Authors
Affiliations
Soon will be listed here.
Abstract

Pattern formation is a frequent phenomenon occurring in animate and inanimate systems. The interplay between the mass transport of the chemical species and the underlying chemical reaction networks generates most patterns in chemical systems. Periodic precipitation is an emblematic example of reaction-diffusion patterns, in which the process generates a spatial periodic structure in porous media. Here, we use the dormant reagent method to produce colloidal particles of Prussian blue (PB) and PB analogues at the liquid-gel interface. The generated particles produced a stable periodic stratification pattern in time in the liquid phase placed on top of the solid hydrogel. The phenomenon is governed by periodic swelling of the gel driven by the osmotic stress and stability of the formed particles. To illustrate the phenomenon, we developed an extended reaction-diffusion model, which incorporated the gel swelling and sedimentation effect of the formed colloids and could qualitatively reproduce the pattern formation in the liquid phase.

References
1.
Hayashi H . Cs sorption of Mn-Fe based Prussian blue analogs with periodic precipitation banding in agarose gel. Phys Chem Chem Phys. 2022; 24(16):9374-9383. DOI: 10.1039/d2cp00654e. View

2.
Clark J, Murray A, Lee J, Autrey T, Collord A, Hillhouse H . Complexation Chemistry in N,N-Dimethylformamide-Based Molecular Inks for Chalcogenide Semiconductors and Photovoltaic Devices. J Am Chem Soc. 2018; 141(1):298-308. DOI: 10.1021/jacs.8b09966. View

3.
Ferrer-Vilanova A, Alonso Y, Ezenarro J, Santiago S, Munoz-Berbel X, Guirado G . Electrochromogenic Detection of Live Bacteria Using Soluble and Insoluble Prussian Blue. ACS Omega. 2021; 6(46):30989-30997. PMC: 8613822. DOI: 10.1021/acsomega.1c03434. View

4.
Nabika H, Itatani M, Lagzi I . Pattern Formation in Precipitation Reactions: The Liesegang Phenomenon. Langmuir. 2019; 36(2):481-497. DOI: 10.1021/acs.langmuir.9b03018. View

5.
Raso D, Greene W, Finley J, Silverman J . Morphology and pathogenesis of Liesegang rings in cyst aspirates: report of two cases with ancillary studies. Diagn Cytopathol. 1998; 19(2):116-9. DOI: 10.1002/(sici)1097-0339(199808)19:2<116::aid-dc10>3.0.co;2-i. View