Small
·
2023
·
IF 13.3
Xinyang Li,Xiaohui Wang,Yanan Wang,Mingan Hu,Guojin Liu,Liqin Chai,Lan Zhou,Jianzhong Shao,Yichen Li
The structural coloration of textiles with bionic photonic crystals (PCs) is expected to become a critical approach to the ecological coloration of textiles. Rapid and large-area preparation of PC structurally colored textiles can be achieved via self-assembly of high mass fractions of liquid photonic crystals (LPCs). However, the rapid and large-scale manufacturing of LPCs remains a challenge. In this work, the pH regulator is added in the process of emulsion polymerization to solve the problem of phase transformation caused by the thermal decomposition of the initiator to produce H + , directly achieving 40 wt.% PS nanospheres in the dispersion. Then oligomers and small-molecule salts are removed from the system via dialysis, and the pre-crystallized LPC system is efficiently prepared. Adjusting the particle size and the mass fraction of nanospheres is shown to be an efficient way to control the optical properties of LPCs. The rapid and large-area preparation of PC structural color fabric and the patterned PC structural color fabric with an iridescent effect is implemented by using LPCs as the assembly intermediate. By constructing the encapsulation layer on the surface of the PC structural color fabric, the consistency of high structural stability and high color saturation of the PC is realized.
研究领域:
材料科学
·
纺织工程
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Tianyi Zhang,Da Teng,Jiaojiao Zhang,Zihui Meng,Lili Qiu
The unique periodic structure of photonic crystals demonstrates an effective slow photon effect that enhances the interaction between light and matter. This study designed and prepared MOF photonic crystal beads, and significantly improved the photocatalytic efficiency by utilizing the slow light effect. Utilizing microfluidic technology, ZIF-8 was self-assembled to form photonic crystal beads (PCB-Z) to enhance adsorption properties and light absorption. The surface of PCB-Z is modified with CdS to form a heterostructure (PCB-ZC), which widens the absorption spectrum, reduces the carrier recombination rate, and increases the specific surface area, while the photocurrent intensity of PCB-ZC is about 1.8 and 29 times that of CdS and PCB-Z. Under the combined effect of photonic crystal structure, ZIF-8/CdS heterojunction and slow photon effect, the degradation rate of Rhodamine B by PCB-ZC was 15.22 times higher than the disordered ZIF-8 powder, and the photocatalytic performance was significantly improved. The dominant role of holes in Rhodamine B degradation was confirmed by free radical trapping experiments and EPR tests. This research confirms that MOF-based photonic crystals can be assembled into periodic structures to enhance adsorption properties and light absorption, which provides a new paradigm for the development of MOF-based photocatalysts.
研究领域:
材料科学
·
光化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Ruizhen Liu,Huaiyuan Jiang,Ping Li,Jianfei Yin,Zhengrui Xu,Xiaoyu Chen,Jian Cheng,Shuangxi Gu,Renliang Lyu
Antibiotic pollution has posed environmental risks, and the crucial point lies in the elimination efficiency of antibiotics from wastewater. Herein, a ternary-structured B-TiO 2 /Bi 2 S 3 /PCs (photonic crystals) film, in which B-TiO 2 was a blend of anatase and rutile crystalline phases, was fabricated to evaluate the efficiency of antibiotic photodegradation under visible light irradiation. The synthesized B-TiO 2 (80 %)/Bi 2 S 3 /PCs(458) film exhibited superior photocatalytic efficiency of tetracycline hydrochloride (TC), with a degradation rate 7.56 times greater than that of pristine B-TiO 2 . These findings are closely related to the excellent photoelectron separation of the heterojunction between B-TiO 2 and Bi 2 S 3 , as well as the bandgap reflection effect and light localization effect of the PCs . Notably, the B-TiO 2 (80 %)/Bi 2 S 3 /PCs(458) film also displayed favourable degradation performance for ofloxacin (OFLX) and ciprofloxacin (CIP), with degradation rates of 83.98 % and 72.79 %, respectively. Active species trapping experiments and electron spin resonance (ESR) measurements revealed superoxide radicals (•O 2 − ) and photogenerated holes (h + ) as the main active species. Furthermore, potential photodegradation pathways were proposed by analyzing the degradation intermediates of TC and OFLX via liquid chromatography-mass spectrometry (LC–MS). In a word, the B-TiO 2 (80 %)/Bi 2 S 3 /PCs(458) film exhibited high efficiency in the treatment of antibiotic pollutants, thereby offering promising prospects for practical application.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2020
·Vol. 12
·期 1
·83
·
IF 3.426
Lu Li,Tiantian Meng,Wanbin Zhang,Ying Su,Juan Wei,Xinwei Shi,Guanghua Zhang
The detection of p-nitrophenol (PNP) is of great significance for assessment of environment pollution and potential health risks. In this study, based on inverse opal polymeric photonic crystals (IOPPCs), a selective and visual sensor for high-performance PNP detection is developed. Due to their unique optical properties, IOPPCs report events by change of color, which can easily be observed by the naked eye. Hydroxyethyl methacrylate (HEMA) was selected as the functional monomer with which to fabricate the IOPPCs. By precisely adjusting the molar ratio between the functional monomer and the crosslinker, the sensors were only able to be sensitive to a specific solution, thus realizing the visual, selective, and semi-quantitative detection of PNP. When the sensors were immersed in different concentrations of PNP solution, their Bragg diffraction wavelengths showed different redshifts. The color of the IOPPCs changed from green to red as the peak shift of Bragg diffraction occurred. In addition, the IOPPCs displayed good interference immunity and reusability.Keywords:polymeric photonic crystals;structural color;p-nitrophenol
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2017
·Vol. 27
·期 43
·1702825
·
IF 12.124
Ke Chen,Qianqian Fu,Siyun Ye,Jianping Ge
Efficient and large scale printing of photonic crystal patterns with multicolor, multigrayscale, and fine resolution is highly desired due to its application in smart prints, sensors, and photonic devices. Here, an electric-field-assisted multicolor printing is reported based on electrically responsive and photocurable colloidal photonic crystal, which is prepared by supersaturation-induced self-assembly of SiO 2 particles in the mixture of propylene carbonate (PC) and trimethylolpropane ethoxylate triacrylate (ETPTA). This colloidal crystal suspension, named as E-ink, has tunable structural color, controllable grayscale, and instantly fixable characteristics at the same time because the SiO 2 /ETPTA-PC photonic crystal has metastable and reversible assembly as well as polymerizable features. Lithographical printing with photomask and maskless pixel printing techniques are developed respectively to efficiently prepare multicolor and high-resolution photonic patterns using a single-component E-ink.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2013
·
IF 3.172
Zhifu Liu,Qinghong Zhang,Hongzhi Wang,Yaogang Li
A new type of photonic crystal structural colored fiber was prepared by assembling superparamagnetic chains on the surface of a flexible fiber in a magnetic field under photopolymerization . In this system, fixed structural colors (blue, green, and red) were generated instantaneously. The fiber with multi-stopband can also be prepared by carefully controlling the size of the magnetic spheres in each photopolymerization procedure. This method would be fast and facile for the further study of structural color on the surface of the fiber, and the process may be used to simulate the conventional fiber coloration process.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2021
·Vol. 8
·期 17
·2100889
·
IF 6.147
Yeguang Zhang,Yong Qi,Shufen Zhang
Due to its high refractive index, photocatalytic activity, and photoinduced superhydrophilicity, TiO 2 has advantages in photonic crystals (PCs). However, the composite of TiO 2 and PCs needs to be calcined at high temperatures, and the structural stability of the composites is poor. In this study, photoinduced superhydrophilic TiO 2 –poly(hydroxyethyl acrylate)/polystyrene (PHEA/PS) PC composites with strong structural colors and self-cleaning are fabricated by coating triethanolamine-modified anatase TiO 2 nanoparticles-hydroxyethyl acrylate on the surface of PS PCs. The ordered arrays can be retained after the superficial layers of PS PCs are filled with TiO 2 –PHEA, and vivid blue, green, and red composites can be obtained. The water contact angles of the composites can be reduced to 3° in 0.4 s, and superhydrophilicity can be maintained for 180 days in a laboratory environment. The declining superhydrophilicity can be restored under UV irradiation. The composites can degrade the adsorbed methylene blue under UV irradiation. Photocatalytic activity and superhydrophilicity impart self-cleaning ability on the composites. The locking of PS arrays by TiO 2 –PHEA enhances the structural stability of the composites, making them resistant to water soaking and washing. Therefore, the composites show prospects for decoration, fabric coloring, and wearable electronic devices.
研究领域:
材料科学
·
纳米技术
·
光学
✓ 已验证
DOI
高影响因子
Nanoscale
·
2017
·Vol. 9
·期 22
·7666-7673
·
IF 7.367
Xin Su,Xiaoqian Sun,Suli Wu,Shufen Zhang
Photonic crystals (PCs) have long been considered effective for tuning upconversion luminescence due to their photonic band gap (PBG) and the redistribution of density of optical states (DOS). Although the emission intensity can be changed obviously by the PC effect, rarely an obvious lifetime change consistent with theory is observed due to the low refractive index of PS or SiO2 spheres in the commonly used PCs. Herein, CdS/NaYF4:Yb3+,Er3+ composite PCs with a high refractive index contrast are fabricated in one step with upconversion nanoparticles filled inside CdS PCs. When the upconversion emission peak lies at the edge of the PBGs of the composite PCs, a dramatic decrease in lifetime by 28% and 41% is observed for the green and red emissions, respectively. At the same time, obvious emission intensity enhancements are also observed. In contrast, PS PCs with a low refractive index contrast show a slight effect on the lifetime of upconversion luminescence with their emission peak at the edge of the PBGs. Our results agree well with theory and prove that a sufficiently large refractive index contrast is necessary for PCs to dramatically tune the luminescence lifetime and intensity simultaneously.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
PubMed
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 18
·10972-10979
·
IF 3.119
Yixin Zhang,Jianping Ge
A traditional hydrogel photonic crystal sensor is prepared by multiple steps, including colloidal assembly, polymerization, and recognition group modification, and its measurement repeatability is a challenge due to the inevitable deviations in sensor fabrication and application. In this work, a salicylic acid-containing “SiO2/propylene carbonate” liquid photonic crystal (Sal-LPC), as a new photonic sensing material, was developed to demonstrate reliable measurement of Cu2+ in water. When the Sal-LPC reagent was mixed with the test sample, the Cu2+ promoted the release of H+ from Sal and shrank the photonic crystal lattice, so that the Cu2+ concentration could be determined by the reflection blueshift of liquid PC. The Sal-LPC reagent showed a stronger response to Cu2+ than to other cations, and its sensitivity and measurement range could be optimized by the particle fraction and Sal dosage. Compared to traditional PC hydrogel sensors, the liquid PC reagent was composed of colloidal particles and responsive species, which required no strict control in synthesis. More importantly, the optical response of the liquid PC reagent was scarcely affected by changes in synthesis, storage, or application, and it could interact with the analyte quickly and quantitatively, which ensured accurate and repeatable measurement in either chemical analysis or environmental monitoring.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 8
·期 3
·989-995
·
IF 6.641
Chuan Wang,Xin Zhang,Huimin Zhu,Qianqian Fu,Jianping Ge
The liquid colloidal photonic crystal (PC) is a new kind of photonic structure with attractive properties, such as fluidity, structural metastability, and reversibility in colloidal assembly. However, its controllable synthesis is a big challenge, because it is very difficult to keep all the particles well-dispersed in a highly concentrated colloidal system, and then assemble them into colloidal crystals. In this work, a liquid–liquid extraction (LLE) method has been developed to produce liquid PCs via simple mixing and liquid phase separation at room temperature. Single- and two-component extractants are used to extract part of the solvent from a diluted colloidal solution, which effectively concentrates the colloidal solution without inducing any aggregation and produce highly crystalline liquid PCs by spontaneous precipitation. Compared to the conventional methods, this new LLE process provides a quick, convenient, scalable and universal synthesis of liquid PCs composed of different colloidal particles and solvents, which lays a solid basis for its application in structural-color displays, sensors, and coatings.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER SCIENCE
·
2022
·Vol. 60
·期 11
·1710-1717
·
IF 3.046
Guo-Xing Li,Xiao-Wei Qu,Lu-Wei Hao,Qing Li,Su Chen
From the implementation point of view, the printable magnetic Janus colloidal photonic crystals (CPCs) microspheres are highly desirable. Herein, we developed a dispensing-printing strategy for magnetic Janus CPCs display via a microfluidics-automatic printing system. Monodisperse core/shell colloidal particles and magnetic Fe 3 O 4 nanoparticles precursor serve as inks. Based on the equilibrium of three-phase interfacial tensions, Janus structure is successfully formed, followed by UV irradiation and self-assembly of colloid particle to generate magnetic Janus CPCs microspheres. Notably, this method shows distinct superiority with highly uniform Janus CPCs structure, where the TMPTA/Fe 3 O 4 hemisphere is in the bottom side while CPCs hemisphere is in the top side. Thus, by using Janus CPCs microspheres with two different structural colors as pixel points, a pattern with red flower and green leaf is achieved. Moreover, 1D linear Janus CPCs pattern encapsulated by hydrogel is also fabricated. Both the color and the shape can be changed under the traction of magnets, showing great potentials in flexible smart displays. We believe this work not only offers a new feasible pathway to construct magnetic Janus CPCs patterns by a dispensing-printable fashion, but also provides new opportunities for flexible and smart displays. Graphical
研究领域:
材料科学
·
显示技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Xiaodong Lu,Xiaohui Wang,Xinyang Li,Liqin Chai,Guojin Liu,Jianping Ge,Jianzhong Shao
Patterned photonic crystals (PCs) have great application potential in the textile field owing to their attractive high-saturation iridescent effect. Herein, based on the idea of resist printing, a novel approach to constructing patterned photonic crystals via screen printing was designed and achieved. A colorless pattern with hydrophilic and hydrophobic difference was firstly prepared by screen printing using a hydrophilic polymer paste printed on a hydrophobic fabric, and then the PC structurally colored pattern was obtained through scrapping liquid photonic crystals (LPCs) on the fabric because the LPCs were spread and assembled in the hydrophilic pattern but resisted in the hydrophobic areas, so that to realize the rapid preparation of patterned PCs on the fabric surface. Once the contact angle difference (ΔCA) between the hydrophilic and hydrophobic areas exceeded 80, the “color paste” (that is, LPCs) did not stain the hydrophobic area at all after scrapping, and the assembled PCs pattern showed good contour sharpness and high-saturation iridescence effect. The complex multistructural color patterns on the fabrics were achieved by adjusting the size of nanospheres and using multistep printing and scrapping. The preparation of the protective layer on the PC surface effectively improved the structural stability of the patterned PCs while retaining the optical properties of the pattern. This patterned PCs preparation method was combined with a conventional responsive substance (rhodamine B) to obtain double anti-counterfeiting patterned PCs with the iridescence effect. The results suggested a promising future in both the highly efficient preparation of patterned PCs and the application of PCs in the anti-counterfeiting field.
研究领域:
材料科学
·
纺织工程
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）