scholarly journals CO2/pH-responsive particles with built-in fluorescence read-out

2016 ◽  
Vol 7 (38) ◽  
pp. 5943-5948 ◽  
Author(s):  
Anne B. Mabire ◽  
Quentin Brouard ◽  
Anaïs Pitto-Barry ◽  
Rebecca J. Williams ◽  
Helen Willcock ◽  
...  

A novel fluorescent monomer was synthesized to probe the state of CO2-responsive cross-linked polymer particles.

2019 ◽  
Vol 39 (7) ◽  
pp. 671-678
Author(s):  
Nur E. Jannat ◽  
Md. Ashraful Alam ◽  
M.A. Rahman ◽  
M.M. Rahman ◽  
M.K. Hossain ◽  
...  

Abstract pH-responsive polymers are attracting much interest from researchers because of their wide application potentials in areas like biosensor, bioseparator, bioreactor, biocatalysis, drug delivery, and water treatments. In this investigation a two-step process is evaluated to prepare carboxyl(–COOH) functional submicrometer-sized pH-responsive composite polymer particles. First, submicrometer-sized polystyrene (PS) particles are prepared by a modified conventional dispersion polymerization. In the second step, PS/poly(methacrylic acid-acrylamide-ethylene glycol dimethacrylate) [PS/P(MAA-AAm-EGDMA)] composite polymer particles are synthesized by seeded co-polymerization of methacrylic acid, acrylamide, and ethylene glycol dimethacrylate in the presence of PS seed particles. The size distributions and morphologies analyzed by electron micrographs suggested that seeded copolymerization smoothly occurred without formation of any secondary tiny copolymer particles. The surface composition and functionality are confirmed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance. The hydrodynamic diameter increased with the increase in pH values as part of the carboxyl groups are deprotonated, which favored the swelling of copolymer layer formed around the surface of PS particles. The adsorption of cationic and anionic surfactants at two different pH values showed that adsorption of cationic surfactant is favored at higher pH value whereas that of anionic surfactant is favored at lower pH value.


2018 ◽  
Vol 6 ◽  
Author(s):  
Masaya Ito ◽  
Koki Takano ◽  
Haruka Hanochi ◽  
Yuta Asaumi ◽  
Shin-ichi Yusa ◽  
...  

2018 ◽  
Vol 9 (5) ◽  
pp. 627-636 ◽  
Author(s):  
Ting Zeng ◽  
Duanguang Yang ◽  
Huaming Li ◽  
Chong Cheng ◽  
Yong Gao

Xylene-in-water Pickering emulsion stabilized by polymer particles that were fabricated by the self-assembly of amphiphilic double dynamers showed temperature- and pH-responsive demulsification feature.


Author(s):  
Rukiye Bengü Karabacak ◽  
Mark Louis P. Vidallon ◽  
Shane P. Meaney ◽  
Shahinur Acter ◽  
Zhen Zhen Lu ◽  
...  

ACS Omega ◽  
2017 ◽  
Vol 2 (11) ◽  
pp. 7837-7848 ◽  
Author(s):  
Yuka Azakami ◽  
Michael Kappl ◽  
Syuji Fujii ◽  
Shin-ichi Yusa ◽  
Cathy E. McNamee

2016 ◽  
Vol 8 (26) ◽  
pp. 16690-16698 ◽  
Author(s):  
Yan Qin ◽  
Li Wang ◽  
Changwen Zhao ◽  
Dong Chen ◽  
Yuhong Ma ◽  
...  

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