Versatile titanium dioxide inverse opal composite photonic hydrogel films towards multi-solvents chip sensors

Guo, Min; Yu, Xiaoqing; Zhao, Jinhui; Wang, Jiawei; Qing, Ren-Kun; Liu, Jidong; Wu, Xingjiang; Zhu, Liangliang; Chen, Su

doi:10.1016/j.snb.2021.130639

Cited by 27 publications

(22 citation statements)

References 53 publications

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“…Up to now, the most common investigations for the color changes have been conducted based on the compatibility with sensing targets. Generally, equilibrium swelling ratio, , polarity difference, and total solubility parameter have been used to clarify the mechanism. As we know, swelling/dissolution of matters in chemicals mainly depends on three intermolecular forces: dispersion forces, polar forces, and hydrogen bonding forces .…”

Section: Introductionmentioning

confidence: 99%

Photonic Cellulose Films with Vivid Structural Colors: Fabrication and Selectively Chemical Response

Wang

Dong

et al. 2022

Biomacromolecules

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Recent advances in structural-color cellulose nanocrystal (CNC) materials have been made toward chemical sensing applications; however, such materials lack sufficient color chroma for naked-eye observation, and their selective recognition to given chemicals as well as the corresponding mechanism has rarely been reported. Here, a dopamine-infiltration and post-polymerization approach is proposed to construct vivid structural-color composite films. The chiral nematic structure of CNC enables the structural coloration, while the strong light absorption of the polymeric co-phase, polydopamine (PDA) enhances the color chroma and visibility. By controlling the PDA amount, the composite films can detect organic solvents quantitatively and selectively via visible color changes. From the viewpoint of the compatibility and similitude principle, notably, a critical solubility parameter distance (R 0) between PDA and “active” solvents is defined with a three-dimensional Hansen solubility sphere; this well constructs a rule for the sensing selectivity of the chemochromic composite films. The findings pave the foundation for the design of colorimetric sensors with specifically testing objects.

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Section: Introductionmentioning

confidence: 99%

Photonic Cellulose Films with Vivid Structural Colors: Fabrication and Selectively Chemical Response

Wang

Dong

et al. 2022

Biomacromolecules

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“…A photonic crystal (PhC) provides unique optical properties for thorough control and manipulation of photons within a specific wavelength range not possible otherwise. , Three-dimensional (3D) PhCs with 3D photonic band gap (PBG) have attracted increasing interest in sensors, , lasers, , displays, , anticounterfeiting, , broadband reflectors, , light emitters, and so forth, for their abilities to reflect light and manipulate light emission in all the three dimensions. Nowadays, various two-dimensional assembly methods focusing on core–shell and multicomponent hybrid colloidal nanospheres, , such as self-assembly, , spin coating, , photolithography, deposition, , and viscoelastic shear processing, , have been used to enhance the optical properties of two-dimensional PhC films.…”

Section: Introductionmentioning

confidence: 99%

Reversible Photochromic Photonic Crystal Device with Dual Structural Colors

Zhao

Wang

et al. 2022

ACS Appl. Mater. Interfaces

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Photonic crystal (PhC) light emitter (PC-LE) devices attract extensive attention in anticounterfeiting for their manipulated light emission and iridescent structural color, but their large-scale three-dimensional fabrication is still limited by poor mechanical strength and microstructural defects. Herein, colloidal nanospheres incorporated with photoluminescent dye were assembled to three-dimensional PC-LE devices through a large-scale compressing-induced strategy, which realized dual iridescent and reversible photochromic colors. Periodically distributed refractive indices between molten molecular chains and cross-linked nanospheres generated the iridescent structural color. Subsequently, the device surface reflected another different structural color after partially removing the surface molecular chains by etching. The light emission intensity of the dye was sufficient to obtain the reversible photochromic colors. Simultaneously, the manipulation toward light emission of the photonic band gap achieved the shape of the photoluminescent intenstiy spectra that varied in accordance with the reflective peak. Furthermore, by use of screen-printing tools and transparent masking glue, the etching process became an inkless color printing process, generating a colorful bar code (2 cm × 2 cm) on the device surface. The code was reversibly displayed and encrypted through control of the reflection and emission of light. Significantly, the PC-LE devices opened up a new route for advanced display, color printing, and anticounterfeiting stickers.

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“…So far, various approaches have been conducted for the fabrication of HPCs, which can be divided into three categories, including the layer-by-layer (LBL) method, ,,− template method, ,− and self-assembly method. ,− ,, For the LBL method, a one-dimensional (1D) PC film by spin coating materials with different refractive indexes could be prepared. For example, Szendrei et al synthesized an ultrasensitive HPC through spin coating TiO 2 or SiO 2 nanoparticles and moisture-responsive H 3 Sb 3 P 2 O 14 nanosheets layer by layer, which could track finger motion using the humidity sheath of the human finger.…”

Section: Introductionmentioning

confidence: 99%

Scalable and Sensitive Humidity-Responsive Polymer Photonic Crystal Films for Anticounterfeiting Application

Shen

et al. 2022

ACS Appl. Mater. Interfaces

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In this study, we fabricate a new kind of ultrasensitive humidity-responsive photonic crystal (HPC) films based on emulsion polymerization and the open mill and bending-induced ordering technique (OM-BIOT) method, which is simple and scalable. The HPC film senses relative humidity (RH) from 9 to 98% for the polymer matrix swells up in high RH and shrinks in low RH, leading to a large reflectance shift (81 nm) and distinct color change. Based on the double-peak reflective spectra of the HPC film, we confirm the gradient swelling hypothesis and find that the thickness is another important factor for controlling the sensitivity and response rate of the HPC film. Except for static humidity, the HPC film can also respond to the dynamic humid flow of blowing and polar solvents, which broadens its application potential. This kind of HPC film shows a vivid structural color, and the humidityresponsive behavior is quick, distinct, energy-free, and reversible, having a great prospect for anticounterfeiting application.

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Versatile titanium dioxide inverse opal composite photonic hydrogel films towards multi-solvents chip sensors

Cited by 27 publications

References 53 publications

Photonic Cellulose Films with Vivid Structural Colors: Fabrication and Selectively Chemical Response

Photonic Cellulose Films with Vivid Structural Colors: Fabrication and Selectively Chemical Response

Reversible Photochromic Photonic Crystal Device with Dual Structural Colors

Scalable and Sensitive Humidity-Responsive Polymer Photonic Crystal Films for Anticounterfeiting Application

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