Although flexible and multifunctional textiles are promising for wearable electronics and portable device applications, the main issue is to endow textiles with multifunctionalities while maintaining their innate flexible and porous features. Herein, a vacuum‐assisted layer‐by‐layer assembly technique is demonstrated to conformally deposit electrically conductive substances on textiles for developing multifunctional and flexible textiles with superb electromagnetic interference (EMI) shielding performances, superhydrophobicity, and highly sensitive humidity response. The formed leaf‐like nanostructure is composed of silver nanowires (AgNWs) as the highly conductive skeleton (vein) and transition metal carbide/carbonitride (MXene) nanosheets as the lamina. The presence of MXene protects AgNWs from oxidation and enhances the combination of AgNWs with the fabric substrate, and the transformation of its functional groups leads to self‐derived hydrophobicity. The flexible and multifunctional textile exhibits a low sheet resistance of 0.8 Ω sq−1, outstanding EMI shielding efficiency of 54 dB in the X‐band at a small thickness of 120 µm, and highly sensitive humidity responses, while retaining its satisfactory porosity and permeability. The self‐derived hydrophobicity with a large contact angle of >140° is achieved by aging the hydrophilic MXene coated silk. The wearable multifunctional textiles are highly promising for applications in intelligent garments, humidity sensors, actuators, and EMI shielding.

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SiO2 photonic crystals are employed as a template to prepare composite films of Prussian blue (PB) on a SiO2 photonic crystal (PB@SiO2) by a facile method. The surface morphology and crystallinity are characterized, and the optical, electrochemical, and electrochromic properties are measured. Compared with the pure PB film, the redox ability of the PB@SiO2 composite film increases. In addition, the composite displays a maximum contrast as high as 49.1%, accelerated coloration, and bleaching response times of 3.4 and 6.1 s relative to those of the pure PB. Moreover, the cyclic stability of the PB@SiO2 composite film is also enhanced. Results show that the electrochromic function can be significantly improved by judicious construction of the core–shell structure of PB@SiO2, which may open an avenue to fabricate high-performance electrochromic composites and facilitate their applications.

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