Facile Preparation of Raspberry-Like SiO2@Polyurea Microspheres with Tunable Wettability and Their Application for Oil–Water Separation DOI
Xubao Jiang,

Diankai Zhang,

Yujun Wang

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(42), С. 57672 - 57686

Опубликована: Окт. 9, 2024

Raspberry-like microspheres have been widely used as superhydrophobic materials, photonic crystals, drug carriers, etc. Nevertheless, their preparation methods, usually consisting of multiple steps, are generally time- and energy-consuming. Herein raspberry-like SiO2@polyurea (SiO2@PUM) readily prepared via a one-step precipitation polymerization isophorone diisocyanate in H2O/acetone mixture with the presence SiO2 particles. The sphere size, surface roughness, content SiO2@PUM easily adjustable by varying experimental conditions. TEM SEM observations reveal that final exhibits core–shell structure, polyurea (PU) core particles shell. In process, were initially located on PUM monolayer. With reaction proceeding, monolayer became thicker, forming thicker layer due to accumulation particles, leading multilayer structure shell SiO2@PUM. formation mechanism was thoroughly discussed ascribed electrostatic attraction between positively charged PU negatively Once dried, turned hydrophilic if water-wetted. Using SiO2@PUM, effective separation good reusability for variety oil–water mixtures achieved regardless oil density types emulsions. This work presents novel protocol tunable wettability rapid green resulting highly diverse mixtures.

Язык: Английский

Eu‐Doped Polyurethane with Efficient Multicolor Fluorescence, Self‐Healing, Stimuli‐Responsiveness and Its Diverse Applications DOI Open Access
Yujun Wang, Ruiqing Wang, Xiang Zheng Kong

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 8, 2024

Abstract Multicolor lanthanide‐doped polymers have found versatile applications in data encryption, sensing, and smart display. However, multiple components, sophisticated design, complex preparation procedures are often required. In contrast, their intrinsic multicolor fluorescence emission is been effectively used. Herein, Eu‐doped polyurethane (ETP@PU), integrating tunable emission, self‐healing, multi‐responsiveness, prepared through a facile route via step‐growth polymerization of PU using commercial Eu‐ligand (Eu(TTA) 3 Phen, ETP) as fluorophore. FTIR XPS analysis demonstrate the successful coordination Eu 3+ with carbamate groups PU, which not only enhances mechanical properties but also bestows unique luminescent properties. With increasing ETP content, declines, while that displays discernible enhancement, resulting emission. The highest quantum yield Eu‐related reaches 71.3% due to robust efficient energy transfer between PU. Moreover, ETP@PU exhibits excellent self‐healing capacity potential investigated field light‐emitting diodes, process monitoring. This work provides strategy develop promising for various applications.

Язык: Английский

Процитировано

2
Facile Preparation of Raspberry-Like SiO2@Polyurea Microspheres with Tunable Wettability and Their Application for Oil–Water Separation DOI
Xubao Jiang,

Diankai Zhang,

Yujun Wang

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(42), С. 57672 - 57686

Опубликована: Окт. 9, 2024

Raspberry-like microspheres have been widely used as superhydrophobic materials, photonic crystals, drug carriers, etc. Nevertheless, their preparation methods, usually consisting of multiple steps, are generally time- and energy-consuming. Herein raspberry-like SiO2@polyurea (SiO2@PUM) readily prepared via a one-step precipitation polymerization isophorone diisocyanate in H2O/acetone mixture with the presence SiO2 particles. The sphere size, surface roughness, content SiO2@PUM easily adjustable by varying experimental conditions. TEM SEM observations reveal that final exhibits core–shell structure, polyurea (PU) core particles shell. In process, were initially located on PUM monolayer. With reaction proceeding, monolayer became thicker, forming thicker layer due to accumulation particles, leading multilayer structure shell SiO2@PUM. formation mechanism was thoroughly discussed ascribed electrostatic attraction between positively charged PU negatively Once dried, turned hydrophilic if water-wetted. Using SiO2@PUM, effective separation good reusability for variety oil–water mixtures achieved regardless oil density types emulsions. This work presents novel protocol tunable wettability rapid green resulting highly diverse mixtures.

Язык: Английский

Процитировано

0