Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Liu Jiale,Zhang Shuoning,Wang Zichen,Xia Xinzhao,Zhang Jianying,Yu Yinuo,Xiao Yixian,Ren Yunxiao,Chen Jiajun,Yang Bo,Xie Wenting,Hu Wei,Yang Huai
Optical properties of cholesteric liquid crystal elastomers (CLCEs) can be tuned by an external field, however, it will spontaneously restore to the original state after the field is removed. Here, we introduce diselenide dynamic covalent bonds (DCBs) into CLCEs, whose optical properties can be reversibly and precisely tuned under the combined action of force and light. The tuned optical properties will be written into and remembered by the CLCEs, thus a programming effect is achieved. The prepared dynamical diselenide bonded CLCE films have the typical reversibly mechanochromism property, and high-resolution colourful patterning can be programmed by adjusting exposure time and intensity of masked visible-light under different tensile or compressive strain states. The DCB-CLCEs combine the novel anisotropy of CLCEs and the dynamic chain exchangeable ability of DCBs, which endows the materials with reprogrammable optical properties. We demonstrate a simple strategy of writing naked-eye high-resolution colourful patterning into a film with mechanochromism property by thermal or visible-light, it shows great potential in display devices, anticounterfeiting labels, sensors, optical films and smart materials.
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MOLECULES
·
2024
·Vol. 29
·期 16
·3970
·
IF 4.2
Xinfeng Cheng,Huixian Li,Xiaomeng Sun,Tianxu Xu,Zhenzhen Guo,Xianchao Du,Shuai Li,Xuyang Li,Xiaojing Xing,Dongfang Qiu
To synthesize an effective and versatile nano-platform serving as a promising carrier for controlled drug delivery, visible-light-induced diselenide-crosslinked polyurethane micelles were designed and prepared for ROS-triggered on-demand doxorubicin (DOX) release. A rationally designed amphiphilic block copolymer, poly(ethylene glycol)-b-poly(diselenolane diol-co-isophorone diisocyanate)-b-poly(ethylene glycol) (PEG-b-PUSe-b-PEG), which incorporates dangling diselenolane groups within the hydrophobic PU segments, was initially synthesized through the polycondensation reaction. In aqueous media, this type of amphiphilic block copolymer can self-assemble into micellar aggregates and encapsulate DOX within the micellar core, forming DOX-loaded micelles that are subsequently in situ core-crosslinked by diselenides via a visible-light-triggered metathesis reaction of Se-Se bonds. Compared with the non-crosslinked micelles (NCLMs), the as-prepared diselenide-crosslinked micelles (CLMs) exhibited a smaller particle size and improved colloidal stability. In vitro release studies have demonstrated suppressed drug release behavior for CLMs in physiological conditions, as compared to the NCLMs, whereas a burst release of DOX occurred upon exposure to an oxidation environment. Moreover, MTT assay results have revealed that the crosslinked polyurethane micelles displayed no significant cytotoxicity towards HeLa cells. Cellular uptake analyses have suggested the effective internalization of DOX-loaded crosslinked micelles and DOX release within cancer cells. These findings suggest that this kind of ROS-triggered reversibly crosslinked polyurethane micelles hold significant potential as a ROS-responsive drug delivery system.
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Chemosensors
·
2025
·Vol. 13
·期 3
·81
·
IF 3.7
Peizheng Shi,Ningbin Zhao,Zhuang Sun,Kaiqiang Sun,Wubo Chu,Hsu-Sheng Tsai,Lidong Wu,Tao Cai,Yuezhong Wang,Nan Jiang,Chen Ye,Li Fu,Lixin Xu,Cheng-Te Lin
Uric acid (UA), the final metabolic product of purines, plays a crucial role in human health monitoring. The UA concentration in biological fluids serves as a diagnostic marker for various disorders, particularly kidney diseases, and represents a potential therapeutic target. Given the growing emphasis on preventive healthcare, developing methods for real-time UA detection has become increasingly significant. Here, we demonstrate the synthesis of novel tumbleweed-like molybdenum diselenide (MoSe2) nanostructures through a single-step hydrothermal process. The synthesized MoSe2was subsequently hybridized with reduced graphene oxide (rGO) to construct electrodes for UA sensing. Differential pulse voltammetry (DPV) measurements revealed that the MoSe2/rGO-modified glassy carbon electrode (GCE) exhibited excellent UA detection capabilities under optimized conditions. The sensor demonstrated a remarkably low limit of detection (LOD) of 28.4 nM and maintained linearity across a wide concentration range (40 nM to 200 μM). Notably, the sensor showed high selectivity for UA detection even in the presence of common interfering species, including citric acid (CA), dopamine (DA), ascorbic acid (AA), cysteine (Cys), glucose (Glu), oxalic acid (OA), sodium ions (Na+), and potassium ions (K+). The developed sensor displayed outstanding selectivity, stability, and reproducibility characteristics. This synthetic approach offers promising opportunities for developing MoSe2-based electrochemical sensing platforms suitable for diverse bioanalytical applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yuanhua Xiao,Yang Kong,Xuezhao Wang,Haoran Luo,Gaozhan Yuan,Shiwei Zhang,Aiqing Zhang,Jun Zhou,Yuanyuan Fan,Ling Xin,Anle Wang,Shaoming Fang,Yujie Zheng
The intriguing characteristics of two-dimensional (2D) heterostructures stem from their unique interfaces, which can improve ion storage capability and rate performance. However, there are still challenges in increasing the proportion of heterogeneous interfaces in materials and understanding the complex interaction mechanisms at these interfaces. Here, we have successfully synthesized confined CoSe 2 within the interlayer space of Ti 3 C 2 T x through a simple solvothermal method, resulting in the formation of a superlattice-like heterostructures of CoSe 2 @Ti 3 C 2 T x . Both density functional theory (DFT) calculations and experimental results show that compared with CoSe 2 and Ti 3 C 2 T x , CoSe 2 @Ti 3 C 2 T x can significantly improve adsorption of Na + ions, while maintaining low volume expansion and high Na + ions migration rate. The heterostructure formed by MXene and CoSe 2 is a Schottky heterostructure, and its interfacial charge transfer induces a built-in electric field that promotes rapid ion transport. When CoSe 2 @Ti 3 C 2 T x was used as an anode material, it exhibits a high specific capacity of up to 600.1 mAh/g and an excellent rate performance of 206.3 mAh/g at 20 A/g. By utilizing CoSe 2 @Ti 3 C 2 T x as the anode and activated carbon (AC) as the cathode, the sodium-ion capacitor of CoSe 2 @Ti 3 C 2 T x //AC exhibits excellent energy and power density (125.0 Wh kg −1 and 22.5 kW kg −1 at 300.0 W kg −1 and 37.5 Wh kg −1 , respectively), as well as a long service life (86.3 % capacity retention over 15,300 cycles at 5 A/g), demonstrating its potential for practical applications.
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APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Deng Long,Hongyu Chen,Weijia Chen,Jingqin Cui,Miao Lu,Xinyi Chen
The adsorption and activation of CO 2 are two essential steps during the photocatalytic reduction of CO 2 . However, CO 2 molecules, being non-polar and linear, are thermodynamically too stable to be activated. In this work, we graft aromatic amine molecules to the surface of two-dimensional MoS x Se y to improve its photocatalytic efficiency. Thus, the photongenerated electrons would swiftly transfer from MoS x Se y to the grafted molecules under the excitation of the visible light, which conducts strong interaction with CO 2 to promote its adsorption. In addition, MoS x Se y with grafted aromatic amine molecules exhibited strong reduction ability to trigger the activation of adsorbed CO 2 , and to facilitate the consequent deoxidization and hydrogenation, significantly improving the final production. The proposed grafting of aromatic amine molecules could be a promising strategy for effectively activating CO 2 photoreduction.
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Advanced Optical Materials
·
2024
·
IF 8
Zhongyuan Guan,Yang Huang,Zhaojin Wang,Jiayun Sun,Chengwei Shan,Yiguo Xu,Dan Wu,Aiwei Tang,Xiao Wei Sun,Kai Wang
The development of cadmium-free blue quantum dots (QDs) is of paramount importance to the display industry. In this study, high-quality ZnSeTe/ZnSe/ZnS blue QDs, followed by surface treatment with ZnI 2 are initially synthesized. The introduction of ZnI 2 passivated the surface defects, resulting in an increase in the fluorescence quantum yield. The time-resolved photoluminescence (TRPL) demonstrates a significant inhibition of non-radiative recombination associated with the surface defect state. The density functional theory (DFT) calculation reveals that the binding energy between iodine ions and zinc ions is higher than that between oleate ions and zinc ions, providing a theoretical basis for the effective passivation of the suspended bonds of zinc ions on QDs' surface by iodine ions. Moreover, quantum dot light-emitting diodes (QLEDs) are fabricated and UV photoelectron spectra (UPS) indicate the hole injection barrier between the hole transport layer and QDs decreases 0.12 eV after QDs being treated by ZnI 2 , facilitating hole injection. Finally, The ZnI 2 -treated QLED demonstrates a 1.57-fold and 1.82-fold improvement in L max and EQE max , respectively, reaching 6370 cd m −2 and 9.1%, compared to the pristine QLED. The work serves as a valuable reference for enhancing the performance of cadmium-free blue QLED.
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高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Jian Li,Wenbin Luo,JinFeng Ou,Yi Yu,Zhen Zhang,Zisheng Chao,JinCheng Fan,WenJun Yi,Yadong Wang
Aluminum batteries (ABs) are a promising alternative to lithium-ion batteries (LIBs) in the future. The development of aluminum batteries (ABs) is closely related to their cathode material. In this paper, we successfully designed and prepared a nanorod structure Sb 2 Se 3 @PPy as cathode material for ABs. It exhibits a high reversible capacity of 302 mAh/g at 0.2 A/g, and the capacity is maintained at about 210 mAh/g after 50 cycles. In addition, the electrochemical reaction mechanism and kinetic process of Sb 2 Se 3 @PPy were studied. The results showed that the PPy coating layer reduced the volume change of Sb 2 Se 3 , prevented irreversible deformation, enhanced the structural stability and electronic conductivity.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Wei Zheng,Minyu Li,Hongmei Chen,Fuyin Xie,Zequn Yang,Lijian Leng,Jianping Yang,Wenqi Qu,Hailong Li
The synthesis of structured metal organic framework (MOF)-derived selenide composites is a vibrantly emerging research area serving clean energy purposes. However, there is no way to convert MOFs into structured selenide composites under ambient conditions for unknown reasons. This work gave mechanistic insights into how the redox properties and release rate of selenium precursors influenced the structural inheritance behavior of MOFs during the selenization process, explaining why maintaining the morphology of MOFs during a room-temperature aqueous selenization process is a tricky task. A novel method of selenizing structured ZIF-67 into CoSex hollow cages with its cubic morphology maintained was developed. The target combination between Co and Se was the primary mechanism accounting for ZIF-67 selenization and its morphology inheritance. The selenized ZIF-67 was used in two typical clean energy areas, i.e., coal combustion detoxification and renewable energy storage. The performances of selenized ZIF-67 surpassed those of unstructured cobalt selenides and other benchmark materials used in these two areas. Following the mechanistic insights into the selenization process of ZIF-67, further work may develop more efficient methods to synthesize MOF-derived metal selenide composites under mild conditions, which is critical to extend the variety of MOF-derived materials and serve their cost-effective uses under practical scenarios.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Fulin Yang,Wei Qiao,Lice Yu,Shuli Wang,Ligang Feng
Hydrogen generation from methanol via methanol-assisted water splitting is a promising electrochemical energy conversion technology but still meets challenges in addressing the low intrinsic activity and easy poisoning problems of the conventional Pt catalysts. Herein, the support engineering modulated Pt by hierarchical MoSe 2 @mesoporous hollow carbon support was proposed to integrate some structural and catalytic advantages for hydrogen evolution reaction (HER) and methanol oxidation reaction (MOR). Supporting engineering by layered MoSe 2 nanosheets confined in mesoporous hollow carbon spheres (MHCSs) is adopted to uniformly anchor Pt nanoparticles (Pt/MoSe 2 @MHCS), which effectively enhances the conductivity and prevents the layer-by-layer stacking of MoSe 2 ; Strong interaction and coupling ability between Pt and MoSe 2 and the resultant electronic structure regulation of the active centers could weaken the binding strength of CO* and H* intermediates during catalysis and strengthen the oxophilicity leading to improved MOR and HER kinetics. Specifically, Pt/MoSe 2 @MHCS shows a significantly improved MOR current density of 81.1 mA cm −2 , about 3.0 times that of the benchmark Pt/C catalyst. Meanwhile, it also exhibits the HER performance of 28 mV to achieve a kinetic current density of 10 mA cm −2 in methanol-contained electrolytes. When employed for overall methanol electrolysis, a lowered input voltage of 1.11 V can be obtained to drive the current density (10 mA cm −2 ) compared to that for water electrolysis (0.62 V vs. 1.73 V). The electrochemical properties of high activity, rapid catalytic kinetics, and good stability were also demonstrated due to the enhanced oxophilicity and high poisoning tolerance ability resulting from the MoSe 2 /carbon substrate-induced electron redistribution of Pt sites. This work reports a novel platform to address the catalysis challenges in hydrogen production via the methanol electrolysis technique.
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Small
·
2024
·Vol. 20
·期 35
·2401330
·
IF 13
Yingfen Li,Yue Jian,Fang Huang,Nian Zhou,Wanqiu Chai,Juguang Hu,Jun Zhao,Zhenghua Su,Shuo Chen,Guangxing Liang
Cu 2 ZnSn (S,Se) 4 (CZTSSe), a promising absorption material for thin-film solar cells, still falls short of reaching the balance limit efficiency due to the presence of various defects and high defect concentration in the thin film. During the high-temperature selenization process of CZTSSe, the diffusion of various elements and chemical reactions significantly influence defect formation. In this study, a NaOH-Se intermediate layer introduced at the back interface can optimize Cu 2 ZnSnS 4 (CZTS)precursor films and subsequently adjust the Se and alkali metal content to favor grain growth during selenization. Through this back interface engineering, issues such as non-uniform grain arrangement on the surface, voids in bulk regions, and poor contact at the back interface of absorber layers are effectively addressed. This method not only optimizes morphology but also suppresses deep-level defect formation, thereby promoting carrier transport at both interfaces and bulk regions of the absorber layer. Consequently, CZTSSe devices with a NaOH-Se intermediate layer improved fill factor, open-circuit voltage, and efficiency by 13.3%. This work initiates from precursor thin films via back interface engineering to fabricate high-quality absorber layers while advancing the understanding regarding the role played by intermediate layers at the back interface of kesterite solar cells.
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Advanced Healthcare Materials
·
2025
·
IF 9.6
Xiao Sun,Wanru Tian,Xin Zhao,Xuan Cheng,Yao Li,Qiye Wang,Weichen Li,Peisen Zhang,Mingxia Jiao,Xiliang Luo
Traumatic brain injury (TBI) represents a substantial global health challenge, yet current diagnostic tools, such as CT and MRI, despite providing anatomical detail, have limitations in assessing injury severity, monitoring progression, and guiding personalized treatments. Herein, an aqueous phase-synthesized gallium-doped copper indium selenide quantum dot (QD) probe designed for grading TBI severity is introduced. The doping of gallium ions into the semiconductor core largely restrained the nonradiative recombination rate, thereby significantly enhancing the near-infrared emission of the QDs. Surface modification strategies further improve QD stability and biocompatibility, ensuring high-sensitivity imaging in vivo. In mouse models with varying TBI severities, intravenous administration of Ga-doped QDs, combined with advanced imaging protocols and data analysis, achieved objective grading of injury severity through quantitative analysis of fluorescence signal intensity and distribution, demonstrating a remarkable correlation between QD-derived signals and neuropathological severity. This grading result is further verified by a series of behavioral tests of the corresponding TBI mice. This QD-based imaging strategy offers a sensitive and objective tool for TBI assessment, enabling precise grading and dynamic monitoring, thereby improving clinical decision-making. This innovation complements existing diagnostics and has transformative potential for optimizing TBI management and patient outcomes, especially in resource-limited settings.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Hanqian Li,Bangzhi Ge,Wenqi Xie,Ruoyan Li,Chao Li,Wanqi Jie,Dongxu Zhang,Yi Qin,Yuan Yu,Chongjian Zhou
Liquid-like thermoelectric materials continuously draw significant attention because of their extraordinary performance. However, liquid-like Cu atoms usually aggregate into clusters, resulting in charge carrier concentration far above the optimized value. Herein, we demonstrate that the dynamic Cu atoms can be homogenized throughout the matrix by a phase-dependent diffusion process. We directly visulized that the typical equilibrium process periodically aggregates Cu atoms into clusters along the grain boundaries, leaving abundant vacancies within the dynamic cation sublattice and thereby causing carrier concentrations that are much higher than the optimal value. We developed a solid-state non-equilibrium quenching process to freeze the homogeneous Cu sublattice in the symmetry cubic phase to ambient environment and removed the unfavorable Cu segregation. This substantially decreases the hole concentration from 1.2 × 1022 cm−3 for the equilibrium sample to 0.8 × 1022 cm-3 for the quenched sample, approaching the calculated optimal value. Notably, the highly uniform Cu sublattice reduces the lattice thermal conductivity to predicted minima of 0.3 W·m−1·K−1 from 300 to 1000 K. The reduced hole concentration and lattice thermal conductivity collectively give rise to a high ZT value of 1.5 at 1000 K, lying in the ballpark of all previously reported stoichiometric copper chalcogenides.
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