bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Universal Voltage Design for Triggering Manganese Dioxide Defects Construction to Significantly Boost the Pseudocapacitance
Authors: Yan Lijin , Zhu Chong , Hao Jiangyu , Liang Xinyue , Bai Youcun , Hu Qin , Tan Bochuan , Liu Baibai , Zou Xuefeng , Xiang Bin 
Published: May 2021

AbstractElectrochemical activation can be appropriate for constructing tunable/controllable defects within the interior of electrode materials. However, the activation mechanisms under different applied electric fields urgently need to be systematically explored. Herein, the electrochemically activated manganese dioxide (MnO2) samples are prepared via applying a positive/negative electric field, and two different activation mechanisms are revealed through a series of characterization methods. During the activation process, it is fascinating to discover that MnO2 mainly generates the O vacancies under positive voltage, whereas the electrolyte cations are embedded in the interlayer under negative voltage. The generated O vacancies and intercalated ions not only act as active sites or participate in the charge‐transport process, but also enhance the transmission capability of carriers. In contrast, the specific capacitances of optimized MnO2 samples are 2.9 and 2.8 times than that of pure‐MnO2 after electrochemical activation under positive and negative voltage, respectively. In addition, the activated samples exhibit excellent cycle stability and resistance to electrochemical corrosion, which can well‐maintain the 3D network structure composed of nanosheets after 5000 cycles. This strategy opens up a promising approach for exploring efficient and corrosion‐resistant electrode materials.
Crumple Durable Ultraflexible Organic Solar Cells with an Excellent Power‐per‐Weight Performance
Authors: Song Wei , Yu Kuibao , Zhou Erjun , Xie Lin , Hong Ling , Ge Jinfeng , Zhang Jinsheng , Zhang Xiaoli , Peng Ruixiang , Ge Ziyi 
Published: May 2021

AbstractUltraflexible and ultra‐lightweight organic solar cells (OSCs) have attracted great attention in terms of power supply in wearable electronic systems. Here, ultrathin and ultra‐lightweight OSCs, with a total thickness of less than 3 µm, with excellent mechanical properties in terms of their flexibility and ability to be stretched are demonstrated. A stabilized power conversion efficiency (PCE) of 15.5% and unprecedented power‐per‐weight of 32.07 W g−1 at a weight of 4.83 g m−2 is achieved, which represents one of the best‐performing OSCs based on ultrathin foils substrate reported to date. The ternary strategy introduces the third component of amorphous conformation of the PC71BM molecule, which can slightly reduce crystallization and aggregates without decreasing the electron mobility, thereby reducing rigidity and brittleness of the active layer. The increase in the ductility of the active layer significantly improves the mechanical flexibility of the device, resulting in over 90% retention in the PCE after 200 stretching–compression cycles. In addition, the ternary device exhibits excellent stability when stored in a N2‐filled glove box, resulting in the PCE retaining over 95% of its initial efficiency even after 1000 h. This ultraflexible and ultra‐lightweight photovoltaic foils constitute a major step toward the integration of power supply into malleable electronic textiles.
In Situ Carbon Insertion in Laminated Molybdenum Dioxide by Interlayer Engineering Toward Ultrastable “Rocking‐Chair” Zinc‐Ion Batteries
Authors: Wang Bo , Yan Jianping , Zhang Yufei , Ye Minghui , Yang Yang , Li Cheng Chao 
Published: May 2021

AbstractAqueous zinc‐ion batteries (ZIBs) have attracted significant attention due to their intrinsic safety, cost‐effectiveness, and environmental friendliness. However, the common zinc metal anode suffers from zinc dendrite formation, self‐corrosion, and surface passivation, which impede the further application of aqueous ZIBs. Herein, carbon‐inserted molybdenum dioxide (MoO2) materials with laminated structure are designed as novel intercalation‐type anodes for ZIBs by combination of interlayer engineering and in situ carbonization of aniline guest in molybdenum trioxide interlayers. The uniform dispersion of carbon layers in laminated MoO2 not only provide fast transportation paths for electron but also strengthen the framework of MoO2, leading to high structural integration during high‐rate cycling. Benefiting from the unique structural design, the carbon‐inserted MoO2 electrode exhibits high initial Coulombic efficiency, excellent cycling stability, and outstanding rate capability. Multiple ex situ characterizations reveal its excellent electrochemical stability is derived from reversible intercalation mechanism and ultrastable structural framework. Furthermore, the rocking‐chair zinc‐ion full battery assembled with the zinc pre‐intercalated Na3V2(PO4)2O2F cathode presents excellent stability and ultralong lifespan with a high capacity retention of 91% over 8000 cycles.
Development of Effective Tumor Vaccine Strategies Based on Immune Response Cascade Reactions
Authors: Wu Hang , Fu Xianglei , Zhai Yujia , Gao Shan , Yang Xiaoye , Zhai Guangxi 
Published: May 2021

AbstractTo solve the problems of high toxicity and poor efficacy of existing tumor treatment methods, researchers have developed a variety of tumor immunotherapies. Among them, tumor vaccines activate antigen‐presenting cells and T lymphocytes upstream of the cancer‐immunity cycle are considered the most promising therapy to activate the immune system. Nanocarriers are considered the most promising tumor vaccine delivery vehicles, including polymer nanocarriers, lipid nanocarriers, inorganic nanocarriers, and biomimetic nanocarriers that have been developed for vaccine delivery. Based on the cascade reaction for tumor vaccines to exert their effects, this review summarizes the four key factors for the design and construction of nano‐tumor vaccines. The composition and functional characteristics of the corresponding preferred nanocarriers are illustrated to provide a reference for the development of effective tumor vaccines. Finally, potential challenges and perspectives are illustrated in the hope of improving the efficacy of tumor vaccine immunotherapy and accelerating the clinical transformation of next‐generation tumor vaccines.
Organic Light‐Emitting Transistors Entering a New Development Stage
Authors: Qin Zhengsheng , Gao Haikuo , Dong Huanli , Hu Wenping 
Published: May 2021

AbstractOrganic light‐emitting transistors (OLETs) are possibly the smallest integrated optoelectronic devices that combine the switching and amplification mechanisms of organic field‐effect transistors (OFETs) and the electroluminescent characteristic of organic light‐emitting diodes (OLEDs). Such a unique architecture of OLETs makes them ideal for developing the next‐generation display technology and electrically pumped lasers for miniaturized photonic devices and circuits. However, the development of OLETs has been slow. Recently, some exciting progress has been made with breakthroughs in high mobility emissive organic semiconductors, construction of high‐performance OLETs, and fabrication of novel multifunctional OLETs. This recent slew of advances may represent the advent of a new development stage of OLETs and their related devices and circuits. In this paper, a detailed review of these fantastic advances is presented, with a special focus on the key points for developing high‐performance OLETs. Finally, a brief conclusion is provided with a discussion on the challenges and future perspectives in this field.
Controlled Assembly of Plasmonic Nanoparticles: From Static to Dynamic Nanostructures
Authors: Lee Sunghee , Sim Kyunjong , Moon So Yoon , Choi Jisu , Jeon Yoojung , Nam Jwa‐Min , Park So‐Jung 
Published: May 2021

AbstractThe spatial arrangement of plasmonic nanoparticles can dramatically affect their interaction with electromagnetic waves, which offers an effective approach to systematically control their optical properties and manifest new phenomena. To this end, significant efforts were made to develop methodologies by which the assembly structure of metal nanoparticles can be controlled with high precision. Herein, recent advances in bottom‐up chemical strategies toward the well‐controlled assembly of plasmonic nanoparticles, including multicomponent and multifunctional systems are reviewed. Further, it is discussed how the progress in this area has paved the way toward the construction of smart dynamic nanostructures capable of on‐demand, reversible structural changes that alter their properties in a predictable and reproducible manner. Finally, this review provides insight into the challenges, future directions, and perspectives in the field of controlled plasmonic assemblies.
A Novel Sandwiched Porous MXene/Polyaniline Nanofibers Composite Film for High Capacitance Supercapacitor Electrode
Authors: Chen Binxia , Song Quancheng , Zhou Zehang , Lu Canhui 
Published: May 2021

AbstractAs a class of promising 2D material, MXenes are widely applied to energy storage systems (ESSs) due to metallic conductivity and high electrochemical activities, but the restacking problem during electrode preparation restricts their electrochemical performances. Herein, polyaniline nanofibers (PANINFs) are used as conductive interlayer spacers to induce the self‐assembly of MXene (Ti3C2Tx)‐based electrode. The favored sandwiched porous structure is formed due to the electrostatic adsorption and hydrogen bond interaction between the positively charged PANINFs and the negatively charged Ti3C2Tx nanosheets, which provide abundant accessible sites and facilitate the diffusion of ions. As a result, the flexible freestanding Ti3C2Tx/PANINFs composite electrode exhibits high conductivity (1373.3 S cm–1) and excellent gravimetric capacitance of 645.7 F g–1. Due to the enhanced structural stability, it achieves impressive cycling stability of 98% capacitance retention after 5000 cycles, which is significantly improved from that of pristine Ti3C2Tx electrode (84.6%). This work provides a feasible strategy for the structure regulation and performance enhancement of MXene‐based supercapacitors, which has great potential in energy storage systems.
Resonant Scattering Manipulation of Dielectric Nanoparticles
Authors: Xu Jiahui , Wu Yue , Zhang Pinzheng , Wu Yiming , Vallée Renaud A. L. , Wu Suli , Liu Xiaogang 
Published: May 2021

AbstractThe concentration and manipulation of light in the nanoscale range are fundamental to nanophotonic research. Plasmonic nanoparticles can localize electromagnetic waves within subdiffraction volumes, but they also undergo large Joule losses and inevitable thermal heating. Subwavelength dielectric nanoparticles have emerged as a new class of photonic building blocks that enhance light–matter interactions within nanometric volumes. These nanoparticles exhibit strong electric and magnetic responses with negligible energy dissipation. In recent decades, the design of efficient dielectric nanoresonators has seen tremendous progress. In this review, recent theoretical and experimental advances in characterizing the optical properties of dielectric nanoparticles, from resonant single‐particle scattering characteristics to multimodal interference in complex particle assemblies, are discussed. Specific attention is paid to novel strategies employed to manipulate far‐field Mie‐type scattering, enhance local electromagnetic field, and boost magnetic resonance, as well as ultimately achieve Fano‐like resonance, unidirectional scattering (Kerker conditions), and photon waveguide. A collection of emerging applications of dielectric nanoparticles is also highlighted and the fundamental prospects of designing all‐dielectric/metallic–dielectric photonic nanostructures are considered, particularly those of functional dielectric materials and all‐dielectric 3D assemblies.
Thermally Stable CaLu2Mg2Si3O12:Cr3+ Phosphors for NIR LEDs
Authors: Li Ruiyang , Liu Yongfu , Yuan Chenxu , Leniec Grzegorz , Miao Lijing , Sun Peng , Liu Zehua , Luo Zhaohua , Dong Rui , Jiang Jun 
Published: May 2021

AbstractNear‐infrared (NIR) phosphor‐converted (pc) light‐emitting diode (LED) is a promising next‐generation tiny light source for smart and broadband NIR spectroscopy technology. However, NIR phosphors suffer from challenges in terms of low efficiency and thermal stability. Herein, by selecting a host with large bandgap and weakening the coupling effect to Cr3+, the novel CaLu2Mg2Si3O12:Cr3+ (CLMSG:Cr3+) NIR phosphor is discovered that has an external quantum efficiency of 20.7% and high thermal stability (92.1%@100 °C). Under ≈450 nm excitation, CLMSG:Cr3+ shows broad NIR emission from 650 to 900 nm with a band width of ≈120 nm. The fabricated tiny pcLED demonstrates bright NIR light (34.75 mW@100 mA) with photoelectric efficiency of 11.6%.
Dual Cobalt and Photoredox Catalysis Enabled Redox‐Neutral Annulation of 2‐Propynolphenols
Authors: Zhu Yao , He Yong‐Qin , Tian Wan‐Fa , Wang Mei , Zhou Zhao‐Zhao , Song Xian‐Rong , Ding Hai‐Xin , Xiao Qiang 
Published: May 2021

AbstractA hydroxyl‐assisted, organophotoredox/cobalt dual catalyzed annulation of 2‐propynolphenols to form 2‐hydroxymethyl‐benzo[b]furans was developed by employing 1,2,3,5‐tetrakis(carbazol‐9‐yl)‐4,6‐dicyanobenzene (4CzIPN) as photosensitizer and CoCl2(PPh3)2/5,5′‐dimethyl‐2,2′‐bipyridine as cobalt catalytic precursor. Various substrates and functional groups were tolerated. The practical applications of this reaction were further demonstrated by enlarged gram‐scale and various derivations for complex heterocycles. Primary mechanistic studies suggested the involvement of cobalt‐hydride mediated hydrogen atom transfer (HAT) process.magnified image
Enantioselective Construction of Pyrimidine‐Fused Diazepinone Derivatives Bearing a Tertiary Stereogenic Center Enabled by Iridium‐Catalysed Intramolecular Allylic Substitution
Authors: Jiang Xiaoding , Pan Bendu , Qian Xu , Liang Hao , Zhang Yaqi , Chen Bin , He Xiaobo , Chan Hoi Shan , Chan Albert S. C. , Qiu Liqin 
Published: May 2021

AbstractThe iridium‐catalysed enantioselective intramolecular allylic substitution of pyrimidine‐tethered allylic carbonates was developed. A wide range of chiral pyrimidine‐fused diazepinone derivatives were successfully constructed in 88–96% yields with 85–99% ees. This work further highlights the power of chiral‐bridged biphenyl phosphoramidites in asymmetric synthesis.magnified image
Synthesis of Trans‐4a,12b/3,4‐Dihydrodibenzo[f,h]quinolin‐2(1H)‐Ones and Dibenzo[f,h]quinolin‐2(1H)‐Ones via Irradiation of 6‐Biphenylpyridine‐2(1H)‐Ones
Authors: Sui Jingzhi , He Yun , Wang Tao , Liang Yong , Zhang Zunting 
Published: May 2021

AbstractThe synthesis of trans‐4a,12b‐dihydrodibenzo[f,h]quinolin‐2(1H)‐ones (2), dibenzo[f,h]quinolin‐2(1H)‐ones (3) and 3,4‐dihydrodibenzo[f,h]quinolin‐2(1H)‐ones (4) via photo‐induced annulation of 6‐([1,1′‐biphenyl]‐2‐yl)pyridine‐2(1H)‐ones (1) under irradiation of a 313 nm UV light was described. Compounds 2 were obtained in 82–95% yields when the irradiation time was 3 h. Products 3 were obtained by irradiating 1 for 12 h in the presence of iodine. Heating the solutions of 2 in DMF at 130 °C for 24 h gave compounds 4 via a double 1,3‐H shift. The demonstrated protocols showed the diversity of photo‐induced cyclization of compounds 1.magnified image
Low‐Noise Dual‐Band Polarimetric Image Sensor Based on 1D Bi2S3 Nanowire
Authors: Yang Wen , Yang Juehan , Zhao Kai , Gao Qiang , Liu Liyuan , Zhou Ziqi , Hou Shijun , Wang Xiaoting , Shen Guozhen , Pang Xinchang , Xu Qun , Wei Zhongming 
Published: May 2021

AbstractWith the increasing demand for detection accuracy and sensitivity, dual‐band polarimetric image sensor has attracted considerable attention due to better object recognition by processing signals from diverse wavebands. However, the widespread use of polarimetric sensors is still limited by high noise, narrow photoresponse range, and low linearly dichroic ratio. Recently, the low‐dimensional materials with intrinsic in‐plane anisotropy structure exhibit the great potential to realize direct polarized photodetection. Here, strong anisotropy of 1D layered bismuth sulfide (Bi2S3) is demonstrated experimentally and theoretically. The Bi2S3 photodetector exhibits excellent device performance, which enables high photoresponsivity (32 A W−1), Ion/Ioff ratio (1.08 × 104), robust linearly dichroic ratio (1.9), and Hooge parameter (2.0 × 10−5 at 1 Hz) which refer to lower noise than most reported low‐dimensional materials‐based devices. Impressively, such Bi2S3 nanowire exhibits a good broadband photoresponse, ranging from ultraviolet (360 nm) to short‐wave infrared (1064 nm). Direct polarimetric imaging is implemented at the wavelengths of 532 and 808 nm. With these remarkable features, the 1D Bi2S3 nanowires show great potential for direct dual‐band polarimetric image sensors without using any external optical polarizer.
Good Steel Used in the Blade: Well‐Tailored Type‐I Photosensitizers with Aggregation‐Induced Emission Characteristics for Precise Nuclear Targeting Photodynamic Therapy
Authors: Kang Miaomiao , Zhang Zhijun , Xu Wenhan , Wen Haifei , Zhu Wei , Wu Qian , Wu Hongzhuo , Gong Junyi , Wang Zhijia , Wang Dong , Tang Ben Zhong 
Published: May 2021

AbstractPhotodynamic therapy (PDT) has long been recognized to be a promising approach for cancer treatment. However, the high oxygen dependency of conventional PDT dramatically impairs its overall therapeutic efficacy, especially in hypoxic solid tumors. Exploration of distinctive PDT strategy involving both high‐performance less‐oxygen‐dependent photosensitizers (PSs) and prominent drug delivery system is an appealing yet significantly challenging task. Herein, a precise nuclear targeting PDT protocol based on type‐I PSs with aggregation‐induced emission (AIE) characteristics is fabricated for the first time. Of the two synthesized AIE PSs, TTFMN is demonstrated to exhibit superior AIE property and stronger type‐I reactive oxygen species (ROS) generation efficiency owing to the introduction of tetraphenylethylene and smaller singlet–triplet energy gap, respectively. With the aid of a lysosomal acid‐activated TAT‐peptide‐modified amphiphilic polymer poly(lactic acid)12k–poly(ethylene glycol)5k–succinic anhydride‐modified TAT, the corresponding TTFMN‐loaded nanoparticles accompanied with acid‐triggered nuclear targeting peculiarity can quickly accumulate in the tumor site, effectively generate type‐I ROS in the nuclear region and significantly suppress the tumor growth under white light irradiation with minimized systematic toxicity. This delicate “Good Steel Used in the Blade” tactic significantly maximizes the PDT efficacy and offers a conceptual while practical paradigm for optimized cancer treatment in further translational medicine.
Multifunctional Nanodrug Mediates Synergistic Photodynamic Therapy and MDSCs‐Targeting Immunotherapy of Colon Cancer
Authors: Ding Dongbing , Zhong Huihai , Liang Rongpu , Lan Tianyun , Zhu Xudong , Huang Shengxin , Wang Yong , Shao Jun , Shuai Xintao , Wei Bo 
Published: May 2021

AbstractAn ideal tumor treatment is supposed to eliminate the primary tumor and simultaneously trigger the host antitumor immune responses to prevent tumor recurrence and metastasis. Herein, a liposome encapsulating phosphoinositide 3‐kinase gamma (PI3Kγ) inhibitor IPI‐549 and photosensitizer chlorin e6 (Ce6), denoted by LIC, is prepared for colon cancer treatment. LIC internalized into CT26 cells generates reactive oxygen species (ROS) under laser irradiation to cause immunogenic tumor cell death, during which immunostimulatory signals such as calreticulin are released to further induce T lymphocyte‐mediated tumor cell killing. Meanwhile, IPI‐549 transported by liposome can inhibit PI3Kγ in the myeloid‐derived suppressive cells (MDSCs), resulting in downregulation of arginase 1 (Arg‐1) and ROS to promote MDSCs apoptosis and reduce their immunosuppressive activity to CD8+ T cells. LIC‐mediated immunogenic photodynamic therapy synergizes with MDSCs‐targeting immunotherapy, which significantly inhibits tumor growth via facilitating the dendritic cell maturation and tumor infiltration of CD8+ T cells while decreasing the tumor infiltration of immunosuppressive regulatory T cells, MDSCs, and M2‐like tumor‐associated macrophages. Moreover, the synergistic therapy increases the number of effector memory T cells (TEM) in spleen, which suggests a favorable immune memory to prevent tumor recurrence and metastasis. The Ce6 and IPI‐549‐coloaded multifunctional nanodrug demonstrates high efficacy in colon cancer treatment.
Regulating Exciton–Phonon Coupling to Achieve a Near‐Unity Photoluminescence Quantum Yield in One‐Dimensional Hybrid Metal Halides
Authors: Luo Hui , Guo Songhao , Zhang Yubo , Bu Kejun , Lin Haoran , Wang Yingqi , Yin Yanfeng , Zhang Dongzhou , Jin Shengye , Zhang Wenqing , Yang Wenge , Ma Biwu , Lü Xujie 
Published: May 2021

AbstractLow‐dimensional hybrid metal halides are emerging as a highly promising class of single‐component white‐emitting materials for their unique broadband emission from self‐trapped excitons (STEs). Despite substantial progress in the development of these metal halides, many challenges remain to be addressed to obtain a better fundamental understanding of the structure–property relationship and realize the full potentials of this class of materials. Here, via pressure regulation, a near 100% photoluminescence quantum yield (PLQY) of broadband emission is achieved in a corrugated 1D hybrid metal halide C5N2H16Pb2Br6, which possesses a highly distorted structure with an initial PLQY of 10%. Compression reduces the overlap between STE states and ground state, leading to a suppressed phonon‐assisted non‐radiative decay. The PL evolution is systematically demonstrated to be controlled by the pressure‐regulated exciton–phonon coupling which can be quantified using Huang–Rhys factor S. Detailed studies of the S‐PLQY relation for a series of 1D hybrid metal halides (C5N2H16Pb2Br6, C4N2H14PbBr4, C6N2H16PbBr4, and (C6N2H16)3Pb2Br10) reveal a quantitative structure–property relationship that regulating S factor toward 28 leads to the maximum emission.