ChemistrySelect
·
2026
·Vol. 11
·期 28
·e73876
·
IF 2.3
Tao Liu,Huichao Zhang,Bo Huang,Shitong Li,Bin Liu
Mn 2+ -doped perovskite nanocrystals (NCs) have attracted extensive research interest and have been synthesized with sizes in the strong confinement regime. Nevertheless, the size of the doped NCs is still not as small as that of undoped perovskite NCs. To address this, we develop a ligand-assisted reprecipitation method incorporating ultrasonication to synthesize Mn 2+ -doped CsPb(Cl/Br) 3 NCs. The obtained spherical NCs have an average size of 3.1 nm and exhibit orange photoluminescence originating from the 4 T 1 to 6 A 1 transition of Mn 2+ . The luminescent properties correlate with the volume ratio of MnCl 2 to PbBr 2 precursors. Increasing the ratio enhances the Mn 2+ -related emission, while excessive doping leads to photoluminescence quenching. When the precursor ratio is reduced to 1:1, the NCs exhibit both intrinsic exciton and Mn 2+ -related emission, with some particles adopting cubic or rod-like morphologies. Prolonged ultrasonic treatment does not significantly shift the emission peak of the NCs, but promotes superlattice assembly in small-sized NCs, showing a center-to-center separation of 4.2 nm. Subsequently, altering the precursor addition sequence to introduce MnCl 2 last during ultrasonic preparation yields simultaneous formation of spherical and cubic NCs. Finally, post-synthesis doping of Mn 2+ is achieved. Formation of small spherical NCs confirms hypothesis that MnCl 2 induces morphological transformation of NCs. Graphical Ultrasonication-assisted ligand-assisted reprecipitation delivers 3.1 nm Mn 2+ -doped CsPb(Cl/Br) 3 nanocrystals with orange emission from the Mn 2+ 4 T 1 → 6 A 1 transition.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 5
·306
·
IF 5.4
Zhu Yuchuan,Li Junhong,Yang Ruoxi,Bao Mingqiu,Hao Yakai,Chen Huijin,Yue Ruirui,Shu Jinbing,Duan Xuemin
A ternary nanocomposite, PEDOT:PSS/UiO-66-Cl@Ru, was successfully synthesized via a one-pot hydrothermal strategy for the ultrasensitive electrochemical detection of amaranth (AM) and Allura Red (AR). The conceptual advance of this work lies in the synergistic integration of halogen-induced intrinsic electroactivity, maximal atomic utilization of single-atom Ru, and the conductive bridging effect of PEDOT:PSS. This ternary design effectively overcomes the conductivity bottleneck of MOFs while delivering exceptional catalytic site density and enhanced interfacial stability. The resulting PEDOT:PSS/UiO-66-Cl@Ru platform delivered remarkable analytical performance, featuring wide linear ranges of 0.05–140 µM for AM and 0.07–50 µM for AR. The low limits of detection were 16.6 nM and 23.3 nM, with high sensitivities of 0.179 µA µM⁻¹ cm⁻² and 0.247 µA µM⁻¹ cm⁻² for AM and AR, respectively. Furthermore, the proposed sensor demonstrated excellent selectivity, reproducibility, and stability. Finally, the successful application of PEDOT:PSS/UiO-66-Cl@Ru in detecting AM and AR within beverage samples validates its practical utility for on-site food safety screening.
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TOXICOLOGY
·
2026
·
IF 5.2
Mengying Teng,Jianhui Zhuang,Lili Yang,Yu Chen,Melvin E. Andersen,Qiang Zhang,Weidong Qu
Chlorinated polyfluoroalkyl ether sulfonic acids (Cl-PFESAs, F-53B) are widespread environmental pollutants that have been introduced as emerging alternatives to perfluorooctane sulfonate. They are suspected to have thyroid-disrupting effects, however, their impact on human thyroid hormone (TH) synthesis and the underlying mechanisms remain poorly understood. Using Cl-PFESAs at concentrations relevant to children’s serum levels, in the present study we found that Cl-PFESA mixture significantly elevated thyroxine (T4) and triiodothyronine (T3) synthesis in human thyroid follicular epithelial cells (Nthy-ori 3–1)—contrasting with the hypothyroid effect reported in animal studies. We further demonstrated that mechanistically Cl-PFESAs activated transcription factor paired box gene 8 (PAX8) at environmentally relevant concentrations, upregulating thyroglobulin, thyroid peroxidase, and catalase while downregulating sodium iodide symporter. PAX8 knockdown completely abolished Cl-PFESA-induced upregulation of thyroid-specific transcription factors and TH hypersecretion, confirming that PAX8 plays a central role in mediating the TH-stimulating effect of Cl-PFESA. Furthermore, co-exposure with iodide exhibited a nonmonotonic effect: low-to-medium iodide levels (100–300 μ g/L) enhanced Cl-PFESA-stimulated TH secretion, whereas high levels (≥600 μ g/L) suppressed it. Taken together, this study revealed a novel, human thyrocyte-specific hyperthyroid effect of Cl-PFESA at children serum relevant concentrations and a PAX8-mediated molecular mechanism. Our findings provide crucial toxicological evidence for the human health risk that this class of emerging PFAS alternatives may pose and its potential complications by iodine intake status.
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JOURNAL OF PHYSICAL CHEMISTRY B
·
2026
·
IF 3.2
Ya-Li Wang,Rui-Zhi Cui,Hong-Bao Ren,Qiu-Ye Yang,Wu Li
To investigate the formation process of cesium in a system where chlorine and bromine coexist, as well as the laws governing solid–liquid phase equilibrium, this paper conducts a multiscale study of the CsCl–CsBr–H2O ternary system at 298.15 K. First, the formation process of Cs(Cl, Br) solid solutions was investigated through long-term experiments, while molecular dynamics simulations were employed to examine the coordination and migration of ions at different stages of the reaction. Building on this, the isothermal dissolution equilibrium method was used to systematically determine the stable phase equilibrium relationships in this system and to plot a phase diagram; furthermore, various solid-state characterization analyses were performed on the equilibrium solid phase. Finally, utilizing the thermodynamic data obtained from the experiments, the Pitzer model was parametrized to calculate the solubility of this solid solution system, which was then compared with the experimental results. This research provides a theoretical basis for understanding and predicting the precipitation behavior of cesium in systems where chlorine and bromine coexist.
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INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Mei Hu,Nuerbiye Tuerhong,Zhaohui Chen,Qun Jing,Ming-Hsien Lee
Enthusiasm for the exploration of nonlinear alkali metal borates remains high. Focusing on the Li–B–O–X (X = Cl and Br) system, two examples of noncentrosymmetric borates, Li3B8O13Cl and Li3B8O13Br, were obtained using a high-temperature solution method under vacuum conditions. Structurally, the Li3B8O13X crystals exhibit two independent alternately arranged three-dimensional B–O network structures formed by the basic building block unit B8O16. The performance measurements demonstrate their short ultraviolet cutoff edges. The theoretical calculation indicates that the BO3 units dominate the contribution to their large optical anisotropy with the birefringence, 0.094 and 0.088@1064 nm for Li3B8O13Cl and Li3B8O13Br, respectively.
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POLYMER
·
2022
·
IF 4.432
Ling-jie Zhang,Jian Liu,Long-bo Luo,Xiang-yang Liu,Xu Wang
The combination of high breakdown strength and low dielectric loss has always been a challenge for the preparation of high energy storage density dielectric films . In this work, in order to optimize their dielectric performances, we develop a series of all-organic PI composite films by introducing perchlorinated hexa-peri-hexabenzocoronene (Cl-HBC) molecules with a concentration (0.01–0.1mol%) into PI film. Even at an ultra-low concentration, the Cl-HBC molecule with a quasi-two-dimensional structure would successfully induce the in-plane orientation of PI macromolecular chains and reduce their orientation confusion and molecular cavity. Thus, the existence of Cl-HBC obviously limits the chain mobility of PI in PI-Cl-HBC film under the electric field, which is supposed to reduce the dielectric loss of resulted films. Moreover, Cl-HBC molecules are equipped with a low Lowest Unoccupied Molecular Orbital (LUMO) of about −3.52eV and could work as an electron trap and block the conduction of electrons in the PI composite film. Here, the breakdown strength of the composite film was improved from 442 kV/mm (pure PI) to 539 kV/mm and the dielectric loss was reduced to 0.002. To our best knowledge, it is the first time to significantly enhance the dielectric strength and largely reduce its dielectric loss simultaneously by preparing PI composite film. Meanwhile, compared with pure PI, the energy storage density of composite film increases by 43% and 96% at room temperature and 150 °C, respectively.
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Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 22
·8815-8823
·
IF 8.067
Runda Guo,Weizhuo Zhang,Xin Li,Linyuan Lian,Hongting Chen,Chencheng Peng,Liang Sun,Shiyuan Liu,Jianbing Zhang,Lei Wang
Blue emitting CsPb(Br–Cl)3 perovskite nanoparticles (NPs) play an important role in optoelectronic applications. However, the synthesis of stable blue perovskite NPs with excellent photoluminescence quantum yield (PLQY) is still challenging. Here, a new strategy of conveniently using strontium halides and amine halides for simultaneous doping and surface passivation of CsPb(Br–Cl)3 perovskite NPs is proposed. Through experimental studies and calculations, it is found that divalent Sr2+ cations can partly replace the B-site Pb2+ ions in the lattice structure of perovskite NPs and cause a slight lattice contraction, not only passivating the defects but also providing chances for bluer NPs. As a result, the deep-blue CsPb(Br–Cl)3 perovskite NPs with PL emission centered at 455 nm and a high PLQY of 96% were obtained. In addition, a white light-emitting device (WLED) with the NPs as an emissive layer exhibited a maximum power efficiency of 76 lm W−1 with Commission International de L’Eclairage (CIE) coordinates of (0.33, 0.34). These findings provide fundamental insights into the excited state dynamics of colloidal cesium lead halide (CsPbX3) perovskite NPs that can be used as components of LEDs for practical applications.
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MATERIALS RESEARCH BULLETIN
·
2022
·
IF 5.6
Yi Wang,Shaoqi Zhang,Yuxiang Yan,Hengdong Ren,Jian Chen,Lizhe Liu,Xinglong Wu
A series of flower-like BiOCl x Br 1-x (x = 0∼1) with different Cl − doping contents were prepared via a simple co-precipitation method. Experimental results show that BiOCl 0.2 Br 0.8 (20 mg) can decompose tetracycline hydrochloride (20 mg/L) of ∼100% within 30 min, which is far higher than those of the previously reported BiOCl and BiOBr. Microstructural and spectroscopic characterization demonstrates that Cl − doping can effectively change the growth orientation of the layered BiOCl x Br 1-x nanosheets to expose more (102) active surfaces. Density of states calculations and radical trapping experiments reveal that strong coupling between the electronic states of multi-anions adjusts the band structure, which improves light absorption and generation of main active species ⋅O 2 − . Meanwhile, strong polarization caused by anionic doping also promotes separation and migration of the photogenerated carriers to different positions of the active surface. As a result, the photocatalytic activities are improved largely and optimal in BiOCl 0.2 Br 0.8 .
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Nanomaterials
·
2021
·Vol. 11
·期 12
·3242
·
IF 5.076
Yu Sun,Jin Chen,Fengchao Wang,Yi Yin,Yan Jin,Jun Wang,Xiaogai Peng,Ruiyi Han,Canyun Zhang,Jinfang Kong,Jing Yang
Nowadays, Mn-doping is considered as a promising dissolution for the heavy usage of toxic lead in CsPbX3perovskite material. Interestingly, Mn-doping also introduces an additional photoluminescence band, which is favorable to enrich the emission gamut of this cesium lead halide. Here, a solution spraying strategy was employed for the direct preparation of CsPbxMn1−x(Br,Cl)3film through MnCl2doping in host CsPbBr3material. The possible fabrication mechanism of the provided approach and the dependences of material properties on Mn-doping were investigated in detail. As the results shown, Pb was partially substituted by Mn as expected. With the ratio of PbBr2:MnCl2increasing from 3:0 to 1:1, the obtained film separately featured green, cyan, orange-red and pink-red emission, which was caused by the energy transferring process. Moreover, the combining energy of Cs, Pb, and Mn gradually red-shifted resulted from the formation of Cs-Cl, Pb-Cl and Mn-Br coordination bonding as MnCl2doping increased. In addition, the weight of short decay lifetime of prepared samples increased with the doping rising, which indicated a better exciton emission and less defect-related transition. The aiming of current work is to provide a new possibility for the facile preparation of Mn-doping CsPbX3film material.Keywords:MnCl2doping;CsPbxMn1−x(Br,Cl)3;thin films;solution spraying
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CHEMICAL PHYSICS LETTERS
·
2021
·
IF 2.328
Xi Wang,Jiali Yan,Hao Wang,Daoli Yang,Jinli Zhai,Xiaoya Gao,Chao Gong,Wenjie Zhu,Yongming Luo
To use solar energy effectively, BiOX (Cl, Br, I) nanosheets with reasonable band gap structure were prepared by ultrasonic assisted hydrothermal method. The prepared BiOX (Cl, Br, I) nanosheets removed 90% of CBZ within 5 min, showing rapid degradation kinetic of 0.3858 min −1 . The improved photocatalytic activities can be due to the reduced recombination of photoinduced electron-hole pairs, strong visible-light absorption ability, large surface area and pore. Radicals experiments indicated that the BiOX (Cl, Br, I) generated main holes ( h + ) and minor electrons ( e − ) to degrade CBZ. These results demonstrated the good feasibility of BiOX (Cl, Br, I) nanosheets in the degradation of CBZ under simulated solar light irradiation.
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ACS Omega
·
2020
·
IF 2.87
Hao Xu,Lijie Huang,Mingzi Xu,Minghui Qi,Tan Yi,Qi Mo,Hanyu Zhao,Chongxing Huang,Shuangfei Wang,Yang Liu
1-Ally-3-methylimidazolium chloride ([Amim]Cl), dimethyl sulfoxide (DMSO), and CaCl2 were selected to construct dissolution systems to produce value-added products from pretreatment of waste corrugated cardboards (P-WCCs). The dissolution behaviors of P-WCCs before and after ball milling were studied in different dissolution systems. The regenerated cellulose films were quickly and efficiently prepared via dissolving, regenerating, and pressurized drying. When 4 wt % waste corrugated cardboard was dissolved in [Amim]Cl for 4 h at 90 °C, the regenerated cellulose films featured tensile strengths as high as 59.00 MPa. Adding 40% DMSO and 2 wt % CaCl2 increased the tensile strength of the film to a maximum value of 85.86 MPa. This demonstrates that DMSO improves the ability of WCC to dissolve in ionic liquids; Ca2+ improves the tensile strength and thermal stability of the regenerated cellulose film but reduces its transparency. This work provides a new, simple, and highly efficient way to use WCCs for packaging and wrapping.
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JOURNAL OF NANOPARTICLE RESEARCH
·
2020
·Vol. 22
·期 6
·1-11
·
IF 2.132
Zhao Yubin,Xie Cong,Song Yuxiang,Yang Ping
The photoluminescence (PL) of doped ions is depended strongly on the position of the ion in the substrate. Ion doping endows semiconductor nanocrystals with novel properties. In this paper, Mn:CsPb(Cl/Br) 3 nanocrystals (NCs) with different halogen ratios were obtained by one-pot hot injection synthesis and halogen ion exchange. The emission of Mn 2+ from 4 T 1g - 6 A 1g d-d transition was observed in the case of changing the molar ratio of Cl/Br for Mn:CsPb(Cl/Br) 3 NCs. In the case of a Cl/Br ratio of 4/1, the PL peak of perovskite became weak and Mn 2+ emission was enhanced. After I − ion exchange, the emission of Mn 2+ was observed in Mn:CsPb(Cl/Br) 3 with Cl/Br ratio of 1/4, in which the PL efficiency of the nanocrystals reached 55.74%. Thus, Cl − ions increase the band gap and effectively promote the emission of Mn 2+ . At the same time, the morphology of the samples after ion exchange always remains cube. The lifetimes of the nanocrystals were short aged with increasing Cl − ions and prolonged with increasing I − ions. Because these Mn:CsPbX 3 (x = Cl, Br, I) NCs with different halogen ratios revealed highly stabile blue to red emission, the nanocrystals would be utilizable for further applications.
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