Controlling the position of the Fermi level at the single‐particle level in bulk amount of carbon nanotubes is a key technological bottleneck against their use in building nanodevices for electronics, optics, sensing, bioimaging, and beyond. Here are deployed a novel set of molecules built up from the same building blocks (aniline and methoxy groups attached on a triazine anchor) that efficiently p‐ and n‐dope the nanotubes, depending upon the way they are assembled. Independent computational and experimental investigations consistently confirm the tunability‐by‐assembly concept of the charge transfer agents. The changes of the electronic density localized on the anchor groups and, upon attachment, the consistent variation of the position of the Fermi level in single‐walled carbon nanotubes are monitored. The induced shifts reach several hundreds of meV, ranging from p‐doping up to n‐doping. This is evidenced by changes in the electronic and vibrational behavior of the nanotubes, as observed by Raman, photoelectron, and photoluminescence spectroscopies.

Metal halide perovskites show great potential for indoor photovoltaics, but their application is limited by significant nonradiative recombination under low‐intensity indoor light due to defects. In this work, alkali iodides are used as an effective passivator to simultaneously mitigate defects at the buried interface, bulk lattice, and surface of the perovskite film. The alkali iodide promotes uniform morphology with large grains and phase stability. Specifically, the diffusion of rubidium iodide (RbI) into perovskite suppresses defects at both the interfaces and the bulk of the perovskite film. Consequently, the optimum use of RbI improves power conversion efficiencies of perovskite solar cells (PSCs) from 20.08% to 21.53% under 1 SUN, and from 31.41% to 37.09% under 1000 lux light‐emitting diode (LED) illumination. Furthermore, the RbI‐treated devices maintain 90% of their initial efficiency after 1000 h under 1000 lux LED illumination without encapsulation, demonstrating excellent operational stability. Furthermore, self‐powered internet of things (IoT) sensors driven by RbI‐treated PSCs under indoor lighting are demonstrated, validating the practical viability of this approach. This work provides a comprehensive understanding of the role of alkali iodides in perovskite, and offers a viable pathway for developing highly efficient and stable indoor PSCs, paving the way for their integration into self‐powered IoT applications.

Converting CO2 into high‐value‐added products via “artificial photosynthesis” under mild conditions is a promising yet challenging strategy for developing efficient photocatalysts. This study reports a simple two‐step solvothermal approach to fabricate the dual‐metal–organic framework (MOF) nanocomposite NH2‐UiO‐66@PCN‐224 (NU‐66@PCN‐224) with tightly integrated interfaces, which achieves efficient CO2 to CO photocatalytic reduction under light irradiation. The epitaxially grown PCN‐224, composed of Zr6 clusters and tetrakis (4‐carboxyphenyl) porphyrin (TCPP), serves as a shell layer and a visible light‐absorbing antenna, thereby broadening the light absorption range of the composite material. Moreover, the tightly integrated interfaces of NU‐66@PCN‐224 enhance the mobility of photogenerated charge carriers, consequently enhancing its capability for CO2 catalytic reduction. As a result, the combination of NU‐66 and PCN‐224 retains their individual advantages while achieving a synergistic enhancement of both adsorption and catalysis, further improving the photocatalytic performance. The as‐prepared NU‐66@PCN‐224 catalyst exhibits outstanding photocatalytic performance, yielding 74.6 μmol g−1 h−1 of CO under irradiation without sacrificial agents or photosensitizers. This work demonstrates a straightforward and effective method for designing MOF‐on‐MOF photocatalysts with enhanced photoactivity.

Hydrogenated diamond‐like carbon (H‐DLC) coatings are extensively employed in high‐performance tribological applications, yet their frictional behavior in humid environments remains a critical limitation. A scalable and industrially viable strategy based on graphitic nanodiamonds (Gr‐NDs) is here proposed, enabling humidity‐resistant ultralow friction (coefficient of friction <0.1) without requiring controlled atmospheres or complex surface treatments. This approach is distinct from many recent methods involving the deposition of nanoparticles and 2D materials, which often fail under humid conditions. Gr‐NDs leverage their intrinsic core–shell nanostructure to promote the in operando formation of a peculiar graphitic transfer layer (TL), directly enhancing interfacial lubrication. High‐resolution transmission electron microscopy and Raman spectroscopy confirm that these nanostructures are effectively retained within the TL, ensuring superior wear resistance and friction reduction. Furthermore, spectroscopic analysis reveals that moderate tribochemical oxidation stabilizes the TL, extending its durability under realistic operating conditions. This work establishes Gr‐NDs as a disruptive functional additive for H‐DLC coatings, offering a robust, scalable, and environmentally friendly solution for next‐generation tribological systems in demanding mechanical applications.

Water is essential for life on Earth, but increased human activity has led to water pollution. The international community has been highly concerned about this issue, making it crucial to develop methods for detecting water pollutants. Recently, electrochemical sensors have emerged as effective tools for detecting environmental pollutants in water. Covalent organic frameworks (COFs), a quickly developing type of crystalline linked organic polymers, possess highly structured frameworks, significant specific surface areas, durable chemical properties, and customizable pore microenvironments, which confer great versatility. Notably, electrochemical sensors based on COFs have garnered significant attention due to their outstanding analytical performance. Herein, a comprehensive overview of the basic characteristics is provided and synthesis techniques of COFs in the field of electrochemical detection are widely used, emphasizing their role in the development of electrochemical biosensors and high response detection devices. The design principles, preparation methods, and detection mechanisms of COF‐based electrochemical sensors are also detailed. Recent scientific advancements have been examined, highlighting the application of COF as a functional material in electrochemical sensors for detecting various water pollutants, such as antibiotics, heavy metals, insecticides, bacteria, and fungi. Additionally, the challenges and future development prospects of COF‐based electrochemical detection technology have been outlined.

Achieving high‐sulfur‐loading lithium–sulfur batteries with exceptional cycling stability is pivotal for their commercial deployment. This necessitates the rational engineering of advanced electrode materials and optimized cell configurations. This study utilizes a parallel‐channel‐structured N‐doped carbon‐fiber network embedded with atomically dispersed CoNC active sites to design a redox‐active interlayer with gradient adsorption and catalytic conversion functionalities. The N‐doped carbon‐fiber matrix enhances electronic conductivity and serves as a robust polysulfide immobilizer, suppressing the shuttle effect and extending cycling lifespan. Concurrently, the atomically dispersed CoNC active sites introduce abundant sulphurophilic centers, strengthening polysulfide anchoring and accelerating redox kinetics. Additionally, the parallel‐channel architecture maximizes adsorption site density, enhances electrolyte permeation, and optimizes ion transport, facilitating ultrafast charge transfer and efficient electrochemical reactions. The optimized Super P/S60‐porous carbon‐fiber/C67 composite/S system, with an ultrahigh sulfur loading of 15.6 mg cm−2, demonstrates extraordinary electrochemical stability, maintaining a reversible capacity of 540 mAh g−1 over 100 cycles. Furthermore, a pouch cell with a higher sulfur loading of 23.3 mg cm−2 delivers notable capacity retention of 592 mAh g−1 after 20 cycles, highlighting the effectiveness of this innovative cell architecture for high‐energy‐density lithium–sulfur batteries for next‐generation energy storage technologies.

Multifunctional and eco‐friendly thermal interface materials with bidirectional thermal conductivity have become outstanding materials for solving the heat dissipation problem of electronic devices. The remarkable thermal and mechanical properties of graphene establish it as a promising material for thermal management. This study introduces an environmentally friendly strategy to construct an effective thermal conductive path by assembling and stacking recycled graphene strips (GS) under external mechanical force and using them as reinforcement to strengthen epoxy resin (EP) composites. By adjusting the loading of GS, a superior vertical thermal conductivity of 104.6 W mK−1 is achieved accompanied by a parallel thermal conductivity of 10.6 W mK−1, representing enhancement of 614 and 61 times compared to that of the pure EP, respectively. The outstanding bidirectional thermal conductivity, along with ultralow thermal resistance, strong electromagnetic interference shielding, high‐efficiency Joule heating, as well as excellent mechanical properties, offers a promising way to address the thermal management challenges of next‐generation electronic devices.

Electrostatic flocking, traditionally used in decoration, has recently found emerging applications in diverse fields such as sensors, tissue engineering, evaporators and thermal management. By attaching high aspect ratio fibers onto a substrate through electrostatic flocking, it enables large‐scale control of fiber orientation, resulting in fibrous, porous, or furry structures with several benefits, including enhanced microforce detection sensitivity, large specific surface area, improved reflection/absorption, increased surface roughness, anisotropic surfaces, and strengthened mechanical properties. While challenges remain in achieving highly customized pattern for functional materials, electrostatic flocking holds promise in replicating natural fluffy structures, such as villi and cilia, which could lead to superior performance in biomimetic and functional applications. Despite recent significant progress, a comprehensive review on this technology for cutting‐edge applications is still lacking. This review aims to provide an in‐depth analysis of electrostatic flocking's broader applications and investigates the potential future of electrostatic flocking at the forefront of functional materials by examining the relationship between structure and performance in advanced materials. It begins with an overview of the technology's principles, followed by an exploration of its applications and morphological advantages, and concludes with a discussion of challenges, material selection, structural design, and future directions for this innovative technology.

Increased expression and activity of matrix metalloproteinases (MMPs) coupled with reduced neuropeptide secretion at the wound site significantly impair the healing of diabetic skin wounds. Neuropeptides serve as critical neuroregulators in wound healing, with neuropeptide S (NPS) being a key member of this group. However, whether NPS can enhance the healing of skin wounds remains unconfirmed in the literature. Herein, a functional NPS‐liposome microneedle (FN‐MN) system is developed for targeted, on‐demand drug delivery aimed at promoting the healing of non‐healing skin wounds. To address the elevated expression of MMPs in the wound environment, FN‐MN by incorporating the PLGLAG sequence is modified. This modification enables the tissue inhibitor of metalloproteinases (TIMP) within the FN‐MN to specifically target and inhibit the activity of overexpressed MMPs at the injury site. Upon transplantation of FN‐MN into the skin defect region of type‐2 diabetic mice, the system demonstrates the ability to dynamically and responsively release NPS and TIMP as needed at the lesion. An full‐thickness skin regeneration, enhanced angiogenesis, and functional recovery of both autonomic and sensory nerves are observed. In conclusion, a smart functional microneedle system, tethered with NPS and TIMP, which not only promotes diabetic wound healing and tissue remodeling at the site of injury but also offers a potential therapeutic approach for clinical translation.

Achieving macroscale superlubricity with engineering materials is highly desirable for energy conservation, environmental benefits, and longevity of mechanical components. However, attaining superlubricity in aqueous‐lubricated systems with enhanced load‐bearing capacity remains challenging in metallic materials. Herein, nitrogen‐doped graphene quantum dots (NGQDs) as a nano‐additive in aqueous glycerol facilitate macroscale superlubricity between friction pairs of steel and silicon‐doped hydrogenated amorphous carbon (a‐C:H:Si). Superlubricity is observed in boundary‐lubrication regime with a friction coefficient of 0.0055–0.0097 under various sliding conditions. Notably, the wear of the steel counterface (k = 8.51 × 10−9 mm3/Nm) decreased by 47.8%, resulting in a final contact pressure of 206.7 MPa, which exceeds values reported for aqueous‐lubricated systems during superlubricity. The lubrication mechanism reveals that NGQDs' adsorption on the steel‐worn surface, coupled with the tribocatalytic generation of FeNxCy moieties on a‐C:H:Si surface, is crucial for reducing friction. These FeNxCy moieties, with a multitude of active sites, facilitate the subsequent anionic adsorption of pyrrolic‐rich NGQDs. Simultaneously, the formation of amorphous graphitic film, driven by continuous shearing and exfoliation of graphene sheets within the adsorbed NGQDs, contributes to the stability of superlubricity. These findings provide insights into the functional characteristics of NGQDs for achieving superlubricity in aqueous‐lubricated systems, paving the way for future energy‐saving applications.