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Electronic skins (E‐skins) are poised to revolutionize human interaction not only with one another but also with machines, electronics, and surrounding environment. However, the wearable E‐skin that simultaneously offers multiple sensing capabilities, high sensitivity, and broad sensing ranges remains a great challenge. Here, drawing inspiration from human haptic perception, a multimodal, ultrasensitive, and biomimetic E‐skin (MES) founded on micro‐frustum ionogel is developed based on iontronic capacitive and triboelectric effects for imaginary keyboard and multifunctional haptic cognition. Leveraging simultaneously the ionogel as capacitive layer and triboelectric layer, the MES enables human‐dermis perception performances of high sensitivity (357.56 kPa−1), low limit of detection (0.47 Pa), and broad linear detection range (0–500 kPa). Moreover, human finger joint movements can be precisely monitored by the attached MES and be transferred into accurate typed letter information on an imaginary keyboard. More importantly, by harnessing signal acquisition/processing circuits and machine learning, the real‐time haptic cognition of different materials, surface roughness, and contact pressure can be achieved by the MES, which endows the advancement of interaction between next‐generation intelligent robot and physical environment. Consequently, the proposed MES demonstrates impressive potentials in the fields of wearable electronics, human–machine interaction (HMI), and Artificial Intelligence (AI). [ABSTRACT FROM AUTHOR]

We here reported a highly stereoselective method for the synthesis of polysubstituted conjugated dienes from α‐aryl α‐diazo alkynyl ketones and pyrazole‐substituted unsymmetric aminals under mild conditions, which was promoted by photo‐irridation and involved with 1,6‐dipolar intermediate and quadruple sigmatropic rearrangements, was successfully developed. In this transformation, the cleavage of four bonds and the recombination of five bonds were implemented in one operational step. This protocol provided a modular tool for constructing dienes from amines, pyrazoles and α‐alkynyl‐α‐diazoketones in one‐pot manner. The results of mechanistic investigation indicated that the plausible reaction path underwent the 1,6‐sigmatropic rearrangement instead of the 1,5‐sigmatropic rearrangement. [ABSTRACT FROM AUTHOR]

Anti‐counterfeiting and visual optical information encryption/decryption technology have attracted widespread attention in the field of information security. Luminescent encryption technologies still face a huge challenge in external high voltage power supply, complex architecture, and expensive decryption equipment, which hinder their broad applications. Herein, a wearable integrated self‐powered electroluminescent (EL) display device (W‐ELD) that consists of MXene/Silicone‐based triboelectric nanogenerator (MS‐TENG) and EL device based on a shared MXene electrode is developed for patterned display and information encryption. The W‐ELD features an all‐in‐one MXene electrode with excellent flexibility and high conductivity of 0.6 kΩ sq−1, which is shared by both MS‐TENG and EL devices. The MS‐TENG demonstrates excellent output performances (output power of 0.9 Wm−2) and high stability and durability (104 cycles), which can directly light up the flexible patterned EL device. More importantly, when dripping conductive electrolyte solution, the W‐ELD based on "中國"‐patterned MXene electrode can precisely reveal the encryption information through self‐powered EL emission for real‐time visualized information interaction. Consequently, the all‐in‐one MXene electrode‐based W‐ELD that integrates both MS‐TENG and EL device demonstrates exceptional patterned EL‐based information encryption features, which offers a potential prospect in wearable self‐powered optoelectronic devices, flexible displays, and encryption technology. [ABSTRACT FROM AUTHOR]

Photo‐induced quadruple sigmatropic rearrangements can occur owing to a continuously decreasing energy of three key intermediates and the final product, as illustrated in the cover image and reported by Lu Liu et al. in their Communication (e202400805). The background is the ancient Chinese transmission devices before Qin Dynasty...By Xin Ji; Chaoren Shen; Yuhao Ni; Zhi‐Yao Si; Yuzhu Wang; Xinrong Zhi; Yuting Zhao; Huiling Peng and Lu LiuReported by Author; Author; Author; Author; Author; Author; Author; Author; Author [Extracted from the article]

Photo‐induced quadruple sigmatropic rearrangements can occur owing to a continuously decreasing energy of three key intermediates and the final product, as illustrated in the cover image and reported by Lu Liu et al. in their Communication (e202400805). The background is the ancient Chinese transmission devices before Qin Dynasty...By Xin Ji; Chaoren Shen; Yuhao Ni; Zhi‐Yao Si; Yuzhu Wang; Xinrong Zhi; Yuting Zhao; Huiling Peng and Lu LiuReported by Author; Author; Author; Author; Author; Author; Author; Author; Author [Extracted from the article]