bluuebunny/crossref_metadata_2025_split huggingface dataset:
Carrier–Phonon Interaction Induced Large Negative Thermal‐Optic Coefficient at Near Band Edge of Quasi‐2D (PEA)2PbBr4 Perovskite
Authors: Wu Sheng‐Chan , Wu Chun‐Sheng , Chien Ching‐Hang , Zhang Yu‐Wei , Yang Chung‐Xian , Liu Cheng , Li Ming‐Hsien , Lin Chen‐Fu , Wu Yu‐Hao , Lin Bi‐Hsuan , Chou Yu‐Hsun , Chang Yia‐Chung , Chen Peter , Hsu Hsu‐Cheng 
Published: March 2023

AbstractThe soft and polar nature of quasi‐2D (PEA)2PbBr4 perovskite, and robust photo‐generated excitons lead exciton‐polaritons and exciton‐polarons as the important phenomena near the band edge for application in the lighting aspect. In this work, a convenient methodology is proposed based on the polariton resonant modes in temperature‐dependent (77 K to RT) spectroscopy, and investigate the effect of these quasi‐particles on refractive index dispersion. The large binding energy (≈335 meV) of quasi‐2D excitons is obtained by the reflectance measurements at 77 K. Stable exciton‐polaritons and exciton‐polarons are confirmed by energy dispersions and the observation of self‐trapped exciton‐polaron state, respectively. Furthermore, the large negative thermal‐optic coefficient due to damping effect of exciton‐phonon scattering is observed. The phenomenon is opposite to those observed in conventional semiconductors (e.g., Si, Ge, GaN, AlN, GaAs, AlAs, and ZnO etc.). The observed stable negative thermal‐optic coefficients from 160 K to RT indicate that the quasi‐2D perovskite can be used as a phase compensator for conventional semiconductor materials.
Reallocating Cell Respiration Substrates for Cancer Therapy Using a Metabolism Regulator with an Intermembrane‐Translocatable Accessory
Authors: Duan Qiu‐Yi , Zhu Ya‐Xuan , Shan Bai‐Hui , Guo Yuxin , Xu Ke‐Fei , Jia Hao‐Ran , Wu Fu‐Gen 
Published: March 2023

AbstractOne hallmark of cancer cells is aberrant glucose metabolism. By desperately consuming glucose, cancer cells grow quickly and form a hypoxic core in the tumor, which severely limits the efficacy of oxygen‐dependent therapeutic strategies. Herein, a cell metabolism regulation strategy is adopted to reallocate cell respiration substrates for fueling the processes for cancer therapy by constructing a metabolism nanoregulator (denoted as ATO/GOx PLP). To be specific, a protoporphyrin IX (PpIX, the intermembrane‐translocatable accessory)‐doped liposome is employed for direct intracellular delivery of GOx and atovaquone (ATO, a mitochondrial complex III inhibitor). The PpIX‐doped liposome can efficiently avoid the cargo leakage in blood circulation. Benefiting from the translocation of PpIX from the liposome to the cancer cell membrane, ATO and GOx can be rapidly released upon encountering the plasma membrane and internalized by the cancer cell. By inhibiting mitochondrial oxidative phosphorylation and regulating mitochondrial function, ATO reduces both oxygen consumption and glucose metabolism, sparing more substrates for GOx to kill cancer cells. As a result, ATO/GOx PLP presents outstanding anticancer efficacies both in vitro and in vivo. In addition, the ATO/GOx PLP exhibits excellent biosafety, showing its clinical translation potential. Overall, this study provides a new approach to achieve efficacious metabolism regulation‐based cancer therapy.
Tuning the Intermolecular Electrostatic Interaction toward High‐Efficiency and Low‐Cost Organic Solar Cells
Authors: Li Zi , Yao Huifeng , Ma Lijiao , Wang Jingwen , Bi Zhaozhao , Wang Shijie , Seibt Susanne , Zhang Tao , Xu Ye , Ren Junzhen , Xiao Yang , An Cunbin , Ma Wei , Hou Jianhui 
Published: March 2023

AbstractOrganic solar cells (OSCs) have achieved much progress with rapidly increasing power conversion efficiencies (PCEs). It should be noted that the top‐performance OSCs are generally consisted of active materials with complex chemical structures, resulting in high costs. Here, combining the material design and morphology control, high‐efficiency OSCs are fabricated by a low‐cost donor: acceptor blend. A completely non‐fused electron acceptor named Tz is designed and synthesized via introducing thiazole units on both sides of a bithiophene core, which shows an outstanding PCE of 13.3% with a typical polythiophene donor. More importantly, optimization guidelines are presented to get excellent morphology for low‐cost donor:acceptor systems. Three polythiophenes are selected, poly(3‐hexylthiophene) and its two derivatives with electron‐withdrawing substitutions (PDCBT and PDCBT‐2F), as donors to fabricate the cell devices. The computational and experimental data reveal that decreasing the electrostatic interaction between polythiophene and Tz is the key to getting a suppressed miscibility and thus a high phase purity. This study provides insight into the molecular design and donor:acceptor matching requirements for high‐efficiency and low‐cost OSCs.
Multifunctional Organic Potassium Salt Additives as the Efficient Defect Passivator for High‐Efficiency and Stable Perovskite Solar Cells
Authors: Kong Yingjie , Shen Wenjian , Cai Haoyu , Dong Wei , Bai Cong , Zhao Juan , Huang Fuzhi , Cheng Yi‐Bing , Zhong Jie 
Published: March 2023

AbstractDespite the rapid developments are achieved for perovskite solar cells (PSCs), the existence of various defects in the devices still limits the further enhancement of the power conversion efficiency (PCE) and the long‐term stability of devices. Herein, the efficient organic potassium salt (OPS) of para‐halogenated phenyl trifluoroborates is presented as the precursor additives to improve the performance of PSCs. Studies have shown that the 4‐chlorophenyltrifluoroborate potassium salt (4‐ClPTFBK) exhibits the most effective interaction with the perovskite lattice. Strong coordination between BF3−/halogen in anion and uncoordinated Pb2+/halide vacancies, along with the hydrogen bond between F in BF3− and H in FA+ are observed. Thus, due to the synergistic contribution of the potassium and anionic groups, the high‐quality perovskite film with large grain size and low defect density is achieved. As a result, the optimal devices show an enhanced efficiency of 24.50%, much higher than that of the control device (22.63%). Furthermore, the unencapsulated devices present remarkable thermal and long‐term stability, maintaining 86% of the initial PCE after thermal test at 80 °C for 1000 h and 95% after storage in the air for 2460 h.
Multifunctional MOF‐Based Microneedle Patch With Synergistic Chemo‐Photodynamic Antibacterial Effect and Sustained Release of Growth Factor for Chronic Wound Healing
Authors: Zeng Yongnian , Wang Chenyuan , Lei Kai , Xiao Chuan , Jiang Xue , Zhang Wen , Wu Lujuan , Huang Jianying , Li Wei 
Published: March 2023

AbstractChronic wound healing is a major challenge in biomedicine. Conventional therapies are usually associated with poor drug permeability, low bioavailability, risk of antimicrobial resistance, and require frequent administration. Therefore, a novel formulation with reduced antibiotic dosage, improved drug delivery efficiency, and low application frequency is of remarkable interest for chronic wound healing. Herein, a multifunctional microneedle (MN) patch is presented to achieve rapid wound healing via efficient chemo–photodynamic antibacterial effect and sustained release of growth factors at the wound bed. When the MN patch pierces the skin, MN tips carrying both low dosage of antibiotics and bioactive small molecule‐encapsulated metal–organic frameworks (MOFs) rapidly dissolve and subsequently deliver the payloads to the wound. Upon light irradiation, MOF‐based nanoparticles robustly convert O2 into 1O2, which acts synergistically with chemotherapy to remove pathogenic bacteria from the wound, exhibiting excellent chemo–photodynamic antibacterial performance with a tenfold reduction in the required antibiotic amount. The nanoparticles can achieve a continuous release of growth factors in the wound tissue, promoting the formation of epithelial tissue and neovascularization, thereby further accelerating chronic wound healing. Collectively, the designed multifunctional MOF‐based MN patches offer a simple, safe, and effective alternative for chronic wound management.
Light‐Driven Self‐Recruitment of Biomimetic Semiconducting Polymer Nanoparticles for Precise Tumor Vascular Disruption
Authors: Li Haoze , Zhou Sensen , Wu Min , Qu Rui , Wang Xin , Chen Weizhi , Jiang Yuyan , Jiang Xiqun , Zhen Xu 
Published: March 2023

AbstractTumor vascular disrupting therapy has offered promising opportunities to treat cancer in clinical practice, whereas the overall therapeutic efficacy is notably limited due to the off‐target effects and repeated dose toxicity of vascular disrupting agents (VDAs). To tackle this problem, a VDA‐free biomimetic semiconducting polymer nanoparticle (SPNP) is herein reported for precise tumor vascular disruption through two‐stage light manipulation. SPNP consists of a semiconducting polymer nanoparticle as the photothermal agent camouflaged with platelet membranes that specifically target disrupted vasculature. Upon the first photoirradiation, SPNP administered in vivo generates mild hyperthermia to trigger tumor vascular hemorrhage, which activates the coagulation cascade and recruits more SPNP to injured blood vessels. Such enhanced tumor vascular targeting of photothermal agents enables intense hyperthermia to destroy the tumor vasculature during the second photoirradiation, leading to complete tumor eradication and efficient metastasis inhibition. Intriguingly, the mechanism study reveals that this vascular disruption strategy alleviates splenomegaly and reverses the immunosuppressive tumor microenvironment by reducing myeloid‐derived suppressor cells. Therefore, this study not only illustrates a light‐driven self‐recruitment strategy to enhance tumor vascular disruption via a single dose of biomimetic therapeutics but also deciphers the immunotherapeutic role of vascular disruption therapy that is conducive to clinical studies.
Oxidized Activated Charcoal Nanozymes: Synthesis, and Optimization for In Vitro and In Vivo Bioactivity for Traumatic Brain Injury
Authors: McHugh Emily A. , Liopo Anton V. , Mendoza Kimberly , Robertson Claudia S. , Wu Gang , Wang Zhe , Chen Weiyin , Beckham Jacob L. , Derry Paul J. , Kent Thomas A. , Tour James M. 
Published: March 2023

AbstractCarbon‐based superoxide dismutase (SOD) mimetic nanozymes have recently been employed as promising antioxidant nanotherapeutics due to their distinct properties. The structural features responsible for the efficacy of these nanomaterials as antioxidants are, however, poorly understood. Here, the process–structure–property–performance properties of coconut‐derived oxidized activated charcoal (cOAC) nano‐SOD mimetics are studied by analyzing how modifications to the nanomaterial's synthesis impact the size, as well as the elemental and electrochemical properties of the particles. These properties are then correlated to the in vitro antioxidant bioactivity of poly(ethylene glycol)‐functionalized cOACs (PEG‐cOAC). Chemical oxidative treatment methods that afford smaller, more homogeneous cOAC nanoparticles with higher levels of quinone functionalization show enhanced protection against oxidative damage in bEnd.3 murine endothelioma cells. In an in vivo rat model of mild traumatic brain injury (mTBI) and oxidative vascular injury, PEG‐cOACs restore cerebral perfusion rapidly to the same extent as the former nanotube‐derived PEG‐hydrophilic carbon clusters (PEG‐HCCs) with a single intravenous injection. These findings provide a deeper understanding of how carbon nanozyme syntheses can be tailored for improved antioxidant bioactivity, and set the stage for translation of medical applications.
Unveiling Strong Ion–Electron–Lattice Coupling and Electronic Antidoping in Hydrogenated Perovskite Nickelate
Authors: Gao Lei , Wang Huimin , Meng Fanqi , Peng Huining , Lyu Xiangyu , Zhu Mingtong , Wang Yuqian , Lu Chao , Liu Jin , Lin Ting , Ji Ailing , Zhang Qinghua , Gu Lin , Yu Pu , Meng Sheng , Cao Zexian , Lu Nianpeng 
Published: March 2023

AbstractDespite being highly promising for applications in emergent electronic devices, decoding both the ion–electron–lattice coupling in correlated materials at the atomic scale and the electronic band structure remains a big challenge due to the strong and complex correlation among these degrees of freedom. Here, taking an epitaxial thin film of perovskite nickelate NdNiO3 as a model system, hydrogen‐ion‐induced giant lattice distortion and enhanced NiO6 octahedra tilting/rotation are demonstrated, which leads to a new robust hydrogenated HNdNiO3 phase with lattice expansion larger than 10% on a series of substrates. Moreover, under the effect of ion–electron synergistic doping, it is found that the proposed electronic antidoping, i.e., the doped electrons mainly fill the ground‐state oxygen 2p holes instead of changing the Ni oxidation state from Ni3+ to Ni2+, dominates the metal–insulator transition. Meanwhile, lattice modification with enhanced Ni–O–Ni bond tilting or rotation mainly modifies the orbital density of states near the Fermi level. Last, by electric‐field‐controlled hydrogen‐ion intercalation and its strong coupling to the lattice and electron charge, selective micrometer‐scale patterns with distinct structural and electronic states are fabricated. The results provide direct evidence for a strong ion–electron–lattice coupling in correlated physics and exhibit its potential applications in designing novel materials and devices.
Multiscale Hybrid Fabrication: Volumetric Printing Meets Two‐Photon Ablation
Authors: Rizzo Riccardo , Rütsche Dominic , Liu Hao , Chansoria Parth , Wang Anny , Hasenauer Amelia , Zenobi‐Wong Marcy 
Published: March 2023

AbstractMultiscale printing of 3D perfusable geometries holds great potential for a range of applications, from microfluidic systems to organ‐on‐a‐chip. However, the generation of freeform designs spanning from centimeter to micrometer features represents an unmet challenge for a single fabrication method and thus may require the convergence of two or more modalities. Leveraging the great advances in light‐based printing, herein a hybrid strategy is introduced to tackle this challenge. By combining volumetric printing (VP) and high‐resolution two‐photon ablation (2PA), the possibility to create multiscale models with features ranging from mesoscale (VP) to microscale (2PA) is demonstrated. To successfully combine these two methods, micrometer‐size defects generated during the VP process due to optical modulation instability and self‐focusing phenomena are first eliminated. By optical tuning the refractive index of the photoresin, defect‐free VP that can then be combined with 2PA is demonstrated. To facilitate the 2PA process and meet VP requirements, a purely protein‐based photoclick photoresin combining gelatin‐norbornene and gelatin‐thiol is introduced. Finally, the possibility to generate complex organotypic 3D vasculature‐like constructs with features ranging from ≈400 µm of VP to ≈2 µm of 2PA is demonstrated. This hybrid strategy opens new possibilities for multiscale printing, with particular potential for microfluidics and organ/tissue‐on‐a‐chip technologies.
Pillared‐Layer Metal‐Organic Frameworks (MOFs) for Photodegradation of Methyl Orange in Wastewater
Authors: Habtemariam Tesfaye Haile , Raju V. J. T. , Chebude Yonas 
Published: March 2023

AbstractThe photocatalytic performance of pillared‐layer metal‐organic framework (MOF), {[Cu2(Fu)2(BPY)]·H2O}n, is studied in detail toward the degradation of methyl orange as a model dye which is toxic, non‐biodegradable, and discharged to the environment as wastewater by textile industries. This model dye is degraded in the laboratory in the presence of UV light and semiconducting MOF, {[Cu2(Fu)2(BPY)]·H2O}n. The optimized conditions for the photodegradation efficiency of the MOF are achieved after considering the effect of pH and MOF loading at a fixed dye concentration. 96% of the 10‐ppm methyl orange is photodegraded after loading 0.25 g L−1 of the photocatalyst into an aqueous solution of the dye at pH 5.2 for 140 min UV light irradiation time. The photocatalyst is recycled five times and 96%, 88%, 87%, 80%, and 53% degradation efficiencies can be achieved in the first, second, third, fourth, and fifth cycles, respectively. The powder X‐ray diffraction analysis of the recycled photocatalyst shows that the crystallinity of the MOF is maintained in the five runs. Thus, {[Cu2(Fu)2(BPY)]·H2O}n assists the degradation of the environmentally hazardous methyl orange in the presence of UV light.
Eco‐Friendly Color Printing Using Transparent Wood Paper
Authors: Chen Jing , Wu Jiayang , Huang Dafang , Tang Chaojun , Zhu Mingwei , Wang Lianhui 
Published: March 2023

AbstractStructural colors are recognized as environmentally friendly colors compared with traditional pigments and dyes. However, their structural substrates are usually made of polymers or solid materials that are difficult to decompose naturally. Finding high‐performance bio‐degradable substrates is essential to protect the environment. Transparent wood paper is a competitive candidate because of its excellent biodegradability, high transparency, and strength. Here, it is firstly demonstrated that structural color prints can be fabricated monolithically on transparent wood paper. By mimicking the color generation structures in nature, nanostructures are imprinted on the surface of delignified wood and exhibit diverse structural colors. Three basic colors of red, green, and blue are demonstrated, and the colors can be continuously tuned by the periodicity and observation angle. Vivid color prints can be realized on the transparent wood paper by structural design. The structural colored transparent wood paper is flexible and bendable, and colors will not fade after 12‐month exposure to natural sunshine. Furthermore, the structural color prints on transparent wood paper are biodegradable and can be discarded directly after use. Both the structural colored relief and the transparent wood are eco‐friendly, opening a new door to next‐generation paper‐based disposable, sustainable, and green optical/photonic devices.
Reducing Efficiency Roll‐Off in Multi‐Resonant Thermally Activated Delayed Fluorescent OLEDs through Modulation of the Energy of the T2State
Authors: Wang Tao , Gupta Abhishek Kumar , Cordes David B. , Slawin Alexandra M. Z. , Zysman‐Colman Eli 
Published: March 2023

AbstractThe S1state and high‐lying triplet excited states (ΔES1Tn) offer insight into clarifying the mechanism of efficiency roll‐off of organic light‐emitting diodes (OLEDs). However, experimental detection of the ΔES1Tnis challenging due to Kasha's rule. Here, two emitters,PhCz‐O‐DiKTaandPhCz‐DiKTa, showing multi‐resonant thermally activated delayed fluorescence (MR‐TADF) are reported. By modulating the conjugation between the MR‐TADFDiKTaemissive center and donor substituent, emission directly from the T2state is for the first time observed in MR‐TADF emitters. Single crystal and reduced density gradient analyses reveal the origin of the reduced observed concentration‐quenching results from weak CH···π and slipped π···π stacking interactions, which suppress nonradiative transitions. Theoretical and photophysical investigations reveal that the ΔES1T2difference influences the reverse intersystem crossing rate. The OLEDs employingPhCz‐O‐DiKTaandPhCz‐DiKTaas emitters show maximum external quantum efficiencies (EQEmax) of over 20%, but very different efficiency roll‐off behavior (54.5% vs 13.6% at 100 cd m−2). Thus, this design provides a possible solution to mitigating device efficiency roll‐off by designing MR‐TADF emitters with degenerate S1and T2states.
Exciton States of Azobenzene Aggregates: A First‐Principles Study
Authors: Titov Evgenii , Beqiraj Alkit 
Published: March 2023

AbstractInteraction between azobenzene‐containing molecules in supramolecular structures or self‐assembled monolayers (SAMs) results in the formation of molecular exciton states. These states determine photophysical and photochemical processes in such assemblies. Here, using first‐principles quantum chemical calculations, optical spectra and exciton delocalization of the exciton states in model clusters of azobenzene molecules are studied. Specifically, 1D linear chains and 2D SAM‐like arrangements are considered, and the exciton states are computed by means of time‐dependent long‐range corrected density functional theory (TD‐lc‐DFT) and ab initio configuration interaction singles (CIS), for clusters including up to 18 azobenzene molecules. The nature of the exciton states is analyzed using transition density matrix analysis. In addition, a connection to periodic systems is made applying the Bethe–Salpeter equation (BSE)/Green's function many‐body perturbation theory () approach to a selected system. It is found that the brightest excitons are dominated by local excitations. The energetic location of charge transfer states in the electronic spectra of aggregates depends to a large extent on a given method and distance between nearest neighbors. Furthermore, it is analized how an excitonic delocalization pattern changes with varying molecular orientation in the unit cell of SAMs.
Advanced Composites Inspired by Biological Structures and Functions in Nature: Architecture Design, Strengthening Mechanisms, and Mechanical‐Functional Responses
Authors: Dai Hanqing , Dai Wenqing , Hu Zhe , Zhang Wanlu , Zhang Guoqi , Guo Ruiqian 
Published: March 2023

AbstractThe natural design and coupling of biological structures are the root of realizing the high strength, toughness, and unique functional properties of biomaterials. Advanced architecture design is applied to many materials, including metal materials, inorganic nonmetallic materials, polymer materials, and so on. To improve the performance of advanced materials, the designed architecture can be enhanced by bionics of biological structure, optimization of structural parameters, and coupling of multiple types of structures. Herein, the progress of structural materials is reviewed, the strengthening mechanisms of different types of structures are highlighted, and the impact of architecture design on the performance of advanced materials is discussed. Architecture design can improve the properties of materials at the micro level, such as mechanical, electrical, and thermal conductivity. The synergistic effect of structure makes traditional materials move toward advanced functional materials, thus enriching the macroproperties of materials. Finally, the challenges and opportunities of structural innovation of advanced materials in improving material properties are discussed.
The Proof‐of‐Concept of Anode‐Free Rechargeable Mg Batteries
Authors: Mao Minglei , Fan Xueru , Xie Wei , Wang Haoxiang , Suo Liumin , Wang Chengliang 
Published: March 2023

AbstractThe desperate pursuit of high gravimetric specific energy leads to the ignorance of volumetric energy density that is one of the basic requirements for batteries. Due to the high volumetric capacity, less‐prone formation of dendrite, and low reduction potential of Mg metal, rechargeable Mg batteries are considered with innately high volumetric energy density. Nevertheless, the substantial elevation in energy density is compromised by extremely excessive Mg metal anode. Herein, the proof‐of‐concept of anode‐free Mg2Mo6S8‐MgS/Cu batteries is proposed, in which MgS as the premagnesiation additive constantly decomposes to replenish Mg loss by electrolyte corrosion over cycling, while both Mg2Mo6S8 and MgS acts as the active material to reversibly provide high capacities. Besides, Mg2Mo6S8 shows superior catalytic activity on the decomposition of MgS and provides the strong affinity to polysulfides to restrain their dissolution. Consequently, the anode‐free Mg2Mo6S8‐MgS/Cu batteries deliver a high reversible capacity of 190 mAh g−1 with the capacity retention of 92% after 100 cycles, corresponding to the highly competitive energy density of 420 Wh L−1. The proposed anode‐free Mg battery here spotlights the great promise of Mg batteries in achieving high volumetric energy densities, which will significantly expedite the advances of Mg batteries in practice.