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Design, synthesis and computational evaluation of 1,2,3-triazole-Schiff base hybrid as AKT1 inhibitor for breast cancer 1,2,3-三唑-希夫碱杂合物AKT1乳腺癌抑制剂的设计、合成及计算评价
IF 4.3 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-06-01 Epub Date: 2026-01-05 DOI: 10.1016/j.chphi.2026.101001
Obaid Afzal , Mohamed Enneiymy , Shamsa Bibi , Hassan A. Madkhali , Taibah Aldakhil , Bharath Kumar Chagaleti , Samreen Gul Khan , Yassine Riadi , Ali Altharawi , Reda A. Haggam
Cancer remains a major global health problem, with breast cancer being one of the most common malignancies. The PI3K/AKT/mTOR pathway, in particular the AKT1 kinase, plays a key role in tumour progression and resistance to treatment. This study focuses on the synthesis and evaluation of novel triazole-Schiff base hybrid compounds as potential AKT1 inhibitors. The hybrid molecules were synthesised using a multi-step process, characterised using spectroscopic techniques and subjected to extensive computational analysis, including density functional theory (DFT), molecular docking, molecular dynamics simulations and ADMET profiling. The results showed that the synthesised compound 5 exhibited a high binding affinity to AKT1 (-9.0 kcal/mol), higher than that of the reference drug Capivasertib (-7.46 kcal/mol). Network pharmacology identified key targets such as AKT1, EGFR and mTOR, while toxicity predictions indicated a favourable safety profile. These results highlight the potential of triazole-Schiff base hybrid as promising candidates for breast cancer therapy, warranting further experimental validation.
癌症仍然是一个主要的全球健康问题,乳腺癌是最常见的恶性肿瘤之一。PI3K/AKT/mTOR通路,特别是AKT1激酶,在肿瘤进展和治疗耐药中起关键作用。本研究的重点是合成和评价新的三唑-希夫碱杂化化合物作为潜在的AKT1抑制剂。混合分子通过多步骤合成,利用光谱技术进行表征,并进行广泛的计算分析,包括密度泛函数理论(DFT)、分子对接、分子动力学模拟和ADMET分析。结果表明,合成的化合物5对AKT1具有较高的结合亲和力(-9.0 kcal/mol),高于参比药物Capivasertib (-7.46 kcal/mol)。网络药理学确定了AKT1、EGFR和mTOR等关键靶点,而毒性预测显示了良好的安全性。这些结果突出了三唑-希夫碱混合物作为乳腺癌治疗有希望的候选者的潜力,需要进一步的实验验证。
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引用次数: 0
Molecular docking and physicochemical characterisation of kaempferol-hydroxy propyl-β-cyclodextrin–Inclusion complex 山奈酚-羟基丙基-β-环糊精-包合物的分子对接及理化性质
IF 4.3 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-06-01 Epub Date: 2026-01-29 DOI: 10.1016/j.chphi.2026.101017
Vandana Sahani , Shivanand Patil , Arun Mahato , Mohit Kumar , C. Nithya Shanthi
Kaempferol is a poorly water-soluble flavonoid with limited biopharmaceutical performance, which restricts its formulation and delivery. In the present study, inclusion complexation of kaempferol with hydroxypropyl-β-cyclodextrin (HPβCD) was investigated using an integrated experimental and computational approach to evaluate its impact on physicochemical and permeability-related properties. The complex was characterised in the solid state by FT-IR, X-ray diffraction, and thermal analysis, and in solution by phase-solubility studies and ¹H NMR spectroscopy. Phase-solubility analysis indicated AL-type behaviour with a 1:1 stoichiometry and a stability constant in the order of 10³ M⁻¹. Complexation resulted in a 5.45-fold increase in aqueous solubility, a reduction in lipophilicity (log P), and improved apparent permeability compared with pure kaempferol. Molecular docking was employed as a qualitative tool to visualize host–guest interactions and support experimental findings. Overall, this study provides a systematic biopharmaceutical evaluation of kaempferol–HPβCD inclusion, highlighting how cyclodextrin complexation modulates solubility–lipophilicity–permeability relationships relevant to formulation development.
Beyond structural characterisation, this study emphasises a physicochemical interpretation of how cyclodextrin–guest interactions modulate the solubility–permeability balance of kaempferol. By correlating experimental spectroscopic signatures with molecular docking-derived interaction patterns, the work provides mechanistic insight into how inclusion complexation alters drug hydrophilicity without compromising membrane transport. While inclusion complexes of kaempferol have been previously reported, the present work advances understanding by linking supramolecular host–guest interactions to functional transdermal performance parameters.
山奈酚是一种水溶性差的类黄酮,生物制药性能有限,这限制了其配方和给药。本研究采用实验和计算相结合的方法研究山奈酚与羟丙基-β-环糊精(HPβCD)的包合作用,以评估其对物理化学和渗透相关性质的影响。通过FT-IR、x射线衍射和热分析对该配合物进行了固态表征,通过相溶解度研究和¹H NMR在溶液中进行了表征。相溶解度分析表明al型行为具有1:1的化学计量,稳定常数为10³M⁻¹。与纯山奈酚相比,络合导致水溶解度增加5.45倍,亲脂性降低(log P),表观渗透率提高。分子对接被用作定性工具来可视化主客体相互作用并支持实验结果。总体而言,本研究对山奈酚- hpβ - cd包合物进行了系统的生物制药评价,强调了环糊精络合如何调节与配方开发相关的溶解度-亲脂性-渗透性关系。除了结构表征,本研究强调了环糊精-客体相互作用如何调节山奈酚的溶解度-渗透性平衡的物理化学解释。通过将实验光谱特征与分子对接衍生的相互作用模式相关联,这项工作提供了包涵络合如何在不影响膜运输的情况下改变药物亲水性的机制见解。虽然山奈酚的包合物之前已经报道过,但本研究通过将超分子主客体相互作用与功能性透皮性能参数联系起来,促进了对山奈酚包合物的理解。
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引用次数: 0
Thymoquinone-loaded proposomal film-forming gel for psoriasis: Formulation, characterization and in vivo evaluation 用于牛皮癣的载百里醌提案体成膜凝胶:配方、表征和体内评价
IF 4.3 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-06-01 Epub Date: 2026-01-12 DOI: 10.1016/j.chphi.2026.101009
Anushka Pai Maroor , Sindhoor S M , Srinivas Mutalik , Pallavi K Shetty

Background

Psoriasis is a persistent autoimmune dermatological ailment Thymoquinone (TQ), shows promising dermatopharmacological effects but suffers from poor skin penetration. To overcome this, TQ was encapsulated in proposomes containing propylene glycol as a permeation enhancer. These were incorporated into a film-forming gel (FFG) to enhance stability, provide sustained release, and form a protective barrier over the skin.

Methods

TQ-loaded proposomes (TQP) were prepared using a hot microemulsion technique and optimized via a central composite design. The formulation was evaluated for particle size, polydispersity index (PDI), zeta potential, morphology, and entrapment efficiency. TQP-Opt was then added to an FFG base containing PVA, PVP, and Carbopol 940. The final TQP-Opt FFG was assessed for physical-chemical properties, ex vivo skin permeation, and in vivo antipsoriatic efficacy.

Results

The optimized TQP-Opt showed a particle size of 128.1 ± 4.2 nm, PDI of 0.381 ± 0.01, and zeta potential of –20.3 ± 1.1 mV. Entrapment efficiency of TQ in TQP-Opt was 82.0 ± 0.78 % and TQ content in TQP-Opt-FFG was 86.86 ± 0.30 %. The TQP-Opt-FFG was homogeneous and viscous, with sustained drug release of 81.27 ± 1.65 % of TQ over 24 h, following Higuchi's release kinetics. Ex vivo studies showed that the permeation of TQP-Opt-FFG, which is significantly higher than that of the TQ solution (p < 0.001). In vivo preclinical studies demonstrated superior therapeutic efficacy in reversing psoriatic symptoms compared to marketed formulations (p < 0.01) in the Imiquimod (IMQ) induced psoriasis model in mice. The formulation was non-irritant and remained unchanged for three successive months.

Conclusion

The TQP-loaded film-forming gel offers a promising, stable, and effective topical strategy for managing psoriasis, with enhanced skin penetration and sustained release.
背景银屑病是一种持续性自身免疫性皮肤病,百里醌(TQ)具有良好的皮肤药理学作用,但皮肤渗透性差。为了克服这一点,TQ被封装在含有丙二醇作为渗透增强剂的提案中。这些被纳入成膜凝胶(FFG),以提高稳定性,提供持续释放,并在皮肤上形成保护屏障。方法采用热微乳法制备stq -负载提物(TQP),并通过中心复合设计进行优化。对该配方进行了粒径、多分散性指数(PDI)、zeta电位、形貌和捕集效率的评估。然后将TQP-Opt添加到含有PVA, PVP和Carbopol 940的FFG碱基中。评估最终的TQP-Opt FFG的物理化学性质、体外皮肤渗透性和体内抗银屑病疗效。结果优化后的TQP-Opt粒径为128.1±4.2 nm, PDI为0.381±0.01,zeta电位为-20.3±1.1 mV。TQP-Opt中TQ的包封率为82.0±0.78%,TQP-Opt- ffg中TQ的含量为86.86±0.30%。TQP-Opt-FFG呈均匀黏稠状,24 h缓释率为TQ的81.27±1.65%,符合Higuchi释放动力学。体外研究表明,TQP-Opt-FFG的通透性显著高于TQ溶液(p < 0.001)。体内临床前研究表明,在咪喹莫特(IMQ)诱导的小鼠银屑病模型中,与市售制剂相比,在逆转银屑病症状方面具有优越的治疗效果(p < 0.01)。该配方无刺激性,连续三个月保持不变。结论负载tqp成膜凝胶治疗银屑病具有良好的透皮性和缓释性,是一种稳定有效的治疗银屑病的外用策略。
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引用次数: 0
Synthesis of new mono/di-cationic benzimidazolium ionic liquids and their effect on physicochemical properties of PBI membrane 新型单/双阳离子苯并咪唑离子液体的合成及其对PBI膜理化性能的影响
IF 4.3 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-06-01 Epub Date: 2026-01-05 DOI: 10.1016/j.chphi.2026.101002
Fereshteh Khorasani , Parisa Salarizadeh , Reza Ranjbar-Karimi
This work aims to synthesize new benzo[d] imidazol-3-ium-based ionic liquids and to examine their effect on the performance of polybenzimidazole (PBI)-based membranes. New mono-cationic and di-cationic ionic liquids with different anions were synthesized through a solvent-free method. The successful synthesis of ionic liquids was validated by FTIR, 1H-NMR, 13C-NMR, and TGA. Then, composite membranes were fabricated by employing PBI in conjunction with mono or di-cationic ionic liquid containing different anions such as Br-, HSO4-, CF3SO3-, and BF4- utilizing a solution casting technique. Besides, a nanocomposite membrane was prepared with the incorporation of di-cationic ionic liquid immobilized on SiO2 nanoparticles (DH@ SiO2) in PBI. The findings indicated that all membranes have good oxidation stability in the Fenton test. The thermal stability of the prepared membranes shows no significant change with the incorporation of ionic liquids. Nanocomposite membrane with 2.5 wt% of DH@ SiO2 exhibited lower degradation in the Fenton test and high conductivity of 78 mS/cm at 80 °C and 105 mS/cm at 120 °C.
本文旨在合成新型苯并咪唑-3-离子液体,并研究其对聚苯并咪唑基膜性能的影响。采用无溶剂法合成了不同阴离子的新型单阳离子和双阳离子离子液体。通过FTIR、1H-NMR、13C-NMR和TGA验证了离子液体的成功合成。然后,采用溶液铸造技术将PBI与含有不同阴离子(Br-、HSO4-、CF3SO3-、BF4-)的单阳离子或双阳离子离子液体结合制备复合膜。此外,在PBI中掺入固定在SiO2纳米颗粒(DH@ SiO2)上的双阳离子离子液体,制备了纳米复合膜。结果表明,所有膜在Fenton试验中都具有良好的氧化稳定性。离子液体的掺入对制备膜的热稳定性无显著影响。在Fenton测试中,含有2.5 wt% DH@ SiO2的纳米复合膜的降解率较低,在80°C和120°C时的电导率分别为78 mS/cm和105 mS/cm。
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引用次数: 0
High-throughput screening of wide-bandgap perovskites for efficient perovskite/silicon tandem solar cells 高效钙钛矿/硅串联太阳能电池中宽禁带钙钛矿的高通量筛选
IF 4.3 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-06-01 Epub Date: 2026-01-19 DOI: 10.1016/j.chphi.2026.101015
Wenjing Lu, Yu Zhuang, Shurong Wang, Qiaogang Song, Youbo Dou, Qiuli Zhang, Hongwen Zhang, Shiyan Yang, Xihua Zhang, Yuan Wu, Xianfeng Jiang
Bandgap-tunable metal-halide perovskites are critical for high-efficiency perovskite/silicon tandem solar cells, yet the respective roles of A- and X-site alloying remain contentious. Here, a high-throughput density-functional-theory (DFT) workflow was deployed to screen 303 compositional configurations across four doping series — MAxFA1-xPbI3, MAxFA1-xPbBr3, FAPb(I1-xBrx)3, and MAPb(I1-xBrx)3. After ground-state energy filtering, every configuration was evaluated for bandgap, band alignment, tolerance factor,and formation energy. A-site doping in MAxFA1-xPbI3 and MAxFA1-xPbBr3 bracketing but never reaches the optimum top-cell bandgap target of ∼1.70 eV. In contrast, bandgap can be continuously tuned to 1.70 eV by progressive X-site Br incorporation, which induces a monotonic blue shift in absorption peak. FAPb(I0.5Br0.5)3 realizes this ideal bandgap together with superior absorbance, identifying it as the optimum composition in the FAPb(I1-xBrx)3 series. Likewise, MAPb(I0.75Br0.25)3 attains ∼1.70 eV with only 25 % Br, minimizing halide-segregation risk while preserving the same advantageous optical signatures, and is thus the most promising candidate in the MAPb(I1-xBrx)3. These quantitative structure–property relations provide a robust theoretical platform for the rational design of bandgap-engineered perovskite top cells in tandem photovoltaics.
带隙可调金属卤化物钙钛矿是高效钙钛矿/硅串联太阳能电池的关键,但A位合金和x位合金各自的作用仍然存在争议。在这里,采用高通量密度泛函数理论(DFT)工作流程筛选了四个掺杂系列——MAxFA1-xPbI3、MAxFA1-xPbBr3、FAPb(I1-xBrx)3和MAPb(I1-xBrx)3中的303种成分配置。经过基态能量滤波后,对每种构型进行带隙、带向、容差系数和地层能量的评估。在MAxFA1-xPbI3和MAxFA1-xPbBr3环片中掺杂a位,但从未达到最佳顶电池带隙目标(约1.70 eV)。相反,通过x位Br的逐渐掺入,带隙可以连续调谐到1.70 eV,从而引起吸收峰的单调蓝移。FAPb(I0.5Br0.5)3实现了这一理想带隙,同时具有优异的吸光度,是FAPb(I1-xBrx)3系列中最理想的组合物。同样地,MAPb(I0.75Br0.25)3在只有25% Br的情况下达到约1.70 eV,在保留相同的有利光学特征的同时最大限度地降低了卤化物偏聚风险,因此是MAPb(I1-xBrx)3中最有希望的候选者。这些定量的结构-性能关系为合理设计带隙工程钙钛矿顶电池提供了坚实的理论平台。
{"title":"High-throughput screening of wide-bandgap perovskites for efficient perovskite/silicon tandem solar cells","authors":"Wenjing Lu,&nbsp;Yu Zhuang,&nbsp;Shurong Wang,&nbsp;Qiaogang Song,&nbsp;Youbo Dou,&nbsp;Qiuli Zhang,&nbsp;Hongwen Zhang,&nbsp;Shiyan Yang,&nbsp;Xihua Zhang,&nbsp;Yuan Wu,&nbsp;Xianfeng Jiang","doi":"10.1016/j.chphi.2026.101015","DOIUrl":"10.1016/j.chphi.2026.101015","url":null,"abstract":"<div><div>Bandgap-tunable metal-halide perovskites are critical for high-efficiency perovskite/silicon tandem solar cells, yet the respective roles of A- and X-site alloying remain contentious. Here, a high-throughput density-functional-theory (DFT) workflow was deployed to screen 303 compositional configurations across four doping series — MA<sub>x</sub>FA<sub>1-x</sub>PbI<sub>3</sub>, MA<sub>x</sub>FA<sub>1-x</sub>PbBr<sub>3</sub>, FAPb(I<sub>1-x</sub>Br<sub>x</sub>)<sub>3</sub>, and MAPb(I<sub>1-x</sub>Br<sub>x</sub>)<sub>3</sub>. After ground-state energy filtering, every configuration was evaluated for bandgap, band alignment, tolerance factor,and formation energy. A-site doping in MA<sub>x</sub>FA<sub>1-x</sub>PbI<sub>3</sub> and MA<sub>x</sub>FA<sub>1-x</sub>PbBr<sub>3</sub> bracketing but never reaches the optimum top-cell bandgap target of ∼1.70 eV. In contrast, bandgap can be continuously tuned to 1.70 eV by progressive X-site Br incorporation, which induces a monotonic blue shift in absorption peak. FAPb(I<sub>0.5</sub>Br<sub>0.5</sub>)<sub>3</sub> realizes this ideal bandgap together with superior absorbance, identifying it as the optimum composition in the FAPb(I<sub>1-x</sub>Br<sub>x</sub>)<sub>3</sub> series. Likewise, MAPb(I<sub>0.75</sub>Br<sub>0.25</sub>)<sub>3</sub> attains ∼1.70 eV with only 25 % Br, minimizing halide-segregation risk while preserving the same advantageous optical signatures, and is thus the most promising candidate in the MAPb(I<sub>1-x</sub>Br<sub>x</sub>)<sub>3</sub>. These quantitative structure–property relations provide a robust theoretical platform for the rational design of bandgap-engineered perovskite top cells in tandem photovoltaics.</div></div>","PeriodicalId":9758,"journal":{"name":"Chemical Physics Impact","volume":"12 ","pages":"Article 101015"},"PeriodicalIF":4.3,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146022565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Engineering a multi-component nanocarrier for Olaparib: A chemo-physical and network pharmacology approach 设计奥拉帕尼的多组分纳米载体:化学物理和网络药理学方法
IF 4.3 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-06-01 Epub Date: 2026-02-07 DOI: 10.1016/j.chphi.2026.101020
Pooja Rayanade , Archana Patil , Sachin Gudasi , Ravikiran Kanabargi , Deepa Mane
Breast cancer treatment remains challenging, prompting innovative therapeutic strategies. In the study, network analysis was performed to evaluate the degree of interaction and to explore the synergistic potential for Olaparib, Hyaluronic Acid, and Graphene Quantum Dots. This was followed by molecular docking studies to assess the binding affinity and interaction of compounds with their target proteins. Finally, Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses were conducted to pinpoint the biological processes and pathways that are most affected. A total of 910 breast cancer–related targets were identified from the GeneCards database, while 366 compound-associated targets were obtained from DIGEP-Pred, SuperPred, and SwissTargetPrediction databases. By overlapping these datasets, 90 common targets were identified, representing the potential intersection between disease-related and compound-related genes. Network pharmacology analysis revealed HA had the highest target interaction (degree = 31), followed by GQD (27) and Olaparib (18). These agents influenced key breast cancer targets (MAPK1, PIK3CA, AKT1, EGFR) and critical pathways like PI3K-Akt and MAPK signalling. Molecular docking showed strong binding affinities for GQD to EGFR and HA to Carbonic Anhydrase II. GO and KEGG analyses further highlighted the involvement of PI3K-Akt, MAPK, and JAK-STAT pathways in tumour progression and chemoresistance. Physicochemical characterization of the nanoformulation confirmed spherical morphology (173 nm particle size, PDI 0.28, zeta potential -30.5 mV). Cytotoxicity assays on MDA-MB-231 cells demonstrated the nanoformulation superior anticancer efficacy, reducing Olaparib's IC₅₀ from 512.07 µg/mL to 243.63 µg/mL.Network pharmacology provided crucial insights which highlighted potential synergies and targets in breast cancer by improving cellular uptake of nanoformulation. Importantly, the blank nanoparticles exhibited no significant toxicity, with an IC50 value 948.3 µg/mL.These findings underscore the promising nanocarrier-based system for enhancing Olaparib's therapeutic index, warranting further in vitro and in vivo validation for clinical translation.
乳腺癌的治疗仍然具有挑战性,促使创新的治疗策略。在这项研究中,进行了网络分析来评估相互作用的程度,并探索奥拉帕尼、透明质酸和石墨烯量子点的协同潜力。随后进行了分子对接研究,以评估化合物与其靶蛋白的结合亲和力和相互作用。最后,通过基因本体(Gene Ontology)和京都基因与基因组百科全书(Kyoto Encyclopedia of Genes and Genomes)途径富集分析,找出受影响最大的生物过程和途径。从GeneCards数据库中共鉴定出910个乳腺癌相关靶点,而从DIGEP-Pred、SuperPred和SwissTargetPrediction数据库中获得366个化合物相关靶点。通过重叠这些数据集,确定了90个共同靶点,代表了疾病相关基因和化合物相关基因之间的潜在交集。网络药理学分析显示,HA的靶相互作用度最高(31度),其次是GQD(27度)和Olaparib(18度)。这些药物影响乳腺癌的关键靶点(MAPK1、PIK3CA、AKT1、EGFR)和关键通路,如PI3K-Akt和MAPK信号传导。分子对接显示GQD与EGFR和HA与碳酸酐酶II具有较强的结合亲和力。GO和KEGG分析进一步强调了PI3K-Akt、MAPK和JAK-STAT通路在肿瘤进展和化疗耐药中的作用。物理化学表征证实了纳米配方的球形形貌(粒径173 nm, PDI 0.28, zeta电位-30.5 mV)。对MDA-MB-231细胞的细胞毒性试验表明,纳米配方具有优异的抗癌功效,将奥拉帕尼的IC₅0从512.07µg/mL降低到243.63µg/mL。网络药理学提供了重要的见解,强调了潜在的协同作用和靶点,通过改善纳米制剂的细胞摄取乳腺癌。重要的是,空白纳米颗粒没有明显的毒性,IC50值为948.3µg/mL。这些发现强调了基于纳米载体的系统有希望提高奥拉帕尼的治疗指数,需要进一步的体外和体内临床转化验证。
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引用次数: 0
Green synthesis of CuO and ZnO nanoparticles from edible mushrooms: Characterization and evaluation of antioxidant, antimicrobial, anti-inflammatory and cytotoxicity activities 绿色合成食用菌氧化铜和氧化锌纳米颗粒:抗氧化、抗菌、抗炎和细胞毒活性的表征和评价
IF 4.3 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-06-01 Epub Date: 2025-11-27 DOI: 10.1016/j.chphi.2025.100985
Jeya Preethi Selvam, Ponmurugan Ponnusamy
This study reports the mycosynthesis of Copper Oxide and Zinc Oxide nanoparticles using edible mushrooms -Agaricus bisporus and Pleurotus ostreatus and evaluates their physiochemical and biological properties. The biosynthesized nanoparticles were characterized using ultraviolet-visible spectroscopy, fourier-transform infrared spectroscopy, x-ray diffraction, scanning electron microscopy, energy dispersive x-ray analysis, Thermogravimetric analysis, Brunauer–Emmett–Teller (BET) analysis and x-ray photoelectron spectroscopy analysis. Antioxidant activity assessed by phosphomolybdenum, superoxide radical, 2,2 –diphenyl-1-picrylhydrazyl and ferric reducing assays showed that Pleurotus ostreatus-derived zinc oxide (91.40 ± 3.87 milligrams ascorbic acid equivalent per gram) nanoparticles exhibited higher antioxidant capacity. Superoxide radical scavenging was strongest in zinc oxide from Pleutrotus ostreatus (76.84 %) and copper oxide from the same source (65.32 %), while Agaricus bisporus mediated copper oxide displayed higher ferric reducing power (21.56 ± 1.04 micrograms per millilitre). Antimicrobial activity increased with concentration, with copper oxide and zinc oxide from Pleurotus ostreatus exhibiting maximum inhibition of approximately 48 % and 47 % at 200 microlitres. Anti-inflammatory activity revealed the highest inhibition for copper oxide from Pleurotus ostreatus (89.39 %), surpassing the standard (61.25 %). Cytotoxicity evaluation indicated a concentration-dependent inhibition, with copper oxide from Pleurotus ostreatus maintaining the strongest activity, decreasing from 89.22 % to 35.54 %. Overall, nanoparticles synthesized using Pleurotus ostreatus exhibited superior biological properties, highlighting the potential of mushroom-mediated green nanotechnology for biomedical applications.
本研究报道了以双孢蘑菇和平菇为原料合成氧化铜和氧化锌纳米颗粒的方法,并对其理化和生物学性能进行了评价。采用紫外可见光谱、傅里叶变换红外光谱、x射线衍射、扫描电镜、能量色散x射线分析、热重分析、布鲁诺尔-埃米特-泰勒(BET)分析和x射线光电子能谱分析对合成的纳米颗粒进行了表征。磷钼、超氧自由基、2,2 -二苯基-1-苦酰肼和铁还原实验表明,平菇衍生的氧化锌纳米颗粒(每克抗坏血酸当量为91.40±3.87毫克)具有较高的抗氧化能力。超氧自由基清除能力最强的是平菇氧化锌(76.84%)和同一来源的氧化铜(65.32%),而双孢蘑菇介导的氧化铜还原能力更强(21.56±1.04微克/毫升)。抑菌活性随浓度的增加而增加,在200微升时,侧耳菇的氧化铜和氧化锌的抑制作用最大,分别约为48%和47%。结果表明,平菇对氧化铜的抑制作用最高(89.39%),超过标准(61.25%)。细胞毒性评价结果显示出浓度依赖性,其中平菇氧化铜的抑制作用最强,从89.22%下降到35.54%。总之,利用平菇合成的纳米颗粒表现出优越的生物学特性,突出了蘑菇介导的绿色纳米技术在生物医学应用中的潜力。
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引用次数: 0
Mixture of Rubia cordifolia and KI as an efficient corrosion inhibitor for steel in 3.5% NaCl: electrochemical and surface studies of steel 堇青花与KI的混合物在3.5% NaCl中作为钢的高效缓蚀剂:钢的电化学和表面研究
IF 4.3 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-06-01 Epub Date: 2025-11-26 DOI: 10.1016/j.chphi.2025.100983
Anjali Sharma , Akhil Saxena , Jasdeep Kaur , Gottipati Venkata Rambabu , Rakesh C , A. Anitha Lakshmi , Ankit Sharma , Ashish Kumar , Rashi Tyagi
This study evaluates the corrosion inhibition performance of Rubia cordifolia extract on mild steel in a 3.5 % NaCl solution, with and without the addition of potassium iodide (SSKI oral solution). The extract contains active phytoconstituents such as alizarin, mollugin, naphthoquinone, ruberythric acid, saponins, and triterpenoids, which contribute to its anticorrosive behavior through adsorption on the steel surface. Potentiodynamic polarization (PDP) results revealed that both anodic and cathodic reactions were effectively suppressed, achieving maximum inhibition efficiencies of 88 % without KI and 95.2 % with KI at 400 mg/L concentration. Electrochemical impedance spectroscopy (EIS) confirmed this trend, showing an increase in charge transfer resistance (Rct) from 15.78 Ω·cm² (blank) to 139.21 Ω·cm² (without KI) and 260.03 Ω·cm² (with KI), indicating the formation of a compact and stable protective film. UV–Visible analysis further validated the adsorption of phytochemical components on the steel surface, as reflected by decreased absorbance after corrosion testing. These results demonstrate that Rubia cordifolia extract acts as an efficient, eco-friendly corrosion inhibitor for steel in saline environments, and its synergistic combination with KI enhances inhibition performance through improved film stability and surface coverage.
研究了在3.5% NaCl溶液中,添加和不添加碘化钾(SSKI口服液)时,堇青花提取物对低碳钢的缓蚀性能。该提取物含有茜素、mollugin、萘醌、橡胶酸、皂苷和三萜等活性植物成分,这些活性植物成分通过在钢表面的吸附而具有防腐作用。动态电位极化(PDP)结果表明,在400 mg/L的浓度下,KI对阳极和阴极反应的抑制率分别为88%和95.2%。电化学阻抗谱(EIS)证实了这一趋势,显示电荷转移电阻(Rct)从15.78 Ω·cm²(空白)增加到139.21 Ω·cm²(无KI)和260.03 Ω·cm²(有KI),表明形成了致密稳定的保护膜。紫外可见分析进一步验证了植物化学成分在钢表面的吸附,这反映在腐蚀测试后的吸光度下降。这些结果表明,在盐水环境中,堇青花提取物是一种高效、环保的钢铁缓蚀剂,它与KI的协同作用通过改善膜稳定性和表面覆盖率提高了缓蚀性能。
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引用次数: 0
Pulsed DC reactive sputtering using a conducting target: A strong method to produce high-quality BiFeO3-based multiferroic thin films 使用导电靶的脉冲直流反应溅射:一种生产高质量bifeo3基多铁薄膜的有力方法
IF 4.3 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-06-01 Epub Date: 2026-01-08 DOI: 10.1016/j.chphi.2026.101004
Swati Sucharita Das, Genta Egawa, Satoru Yoshimura
Magnetoelectric multiferroic thin films are considered crucial for the development of next generation magnetic devices with low power consumption. This is due to the coexistence of ferroelectricity and ferromagnetism in the same phase, which enables its ability to control magnetization with the application of an electric field. Bismuth ferrite (BiFeO3) based materials are one such promising contender, offering numerous advantages. The fabrication of these materials in the form of thin films is quite challenging because the crystal structure, including the oxygen atom, is complex. The fabrication method plays a crucial role in regulating both the structure and the ferroelectric and ferromagnetic behavior of these thin films. In this study, we have fabricated BiFeO3 based thin films using pulsed DC reactive sputtering and compared their crystal structure, along with their magnetic and ferroelectric properties, with those of thin films fabricated using RF sputtering. Thin films fabricated using pulsed DC reactive sputtering reflect superior crystal structure as well as magnetic and insulating properties. The saturation magnetization in the case of pulsed DC reactive sputtering is found to be significantly higher (72 emu/cm³) than that of RF sputtering (48 emu/cm³). The leakage current has improved from 10–5 A to 10–7 A. Here, while fabricating high quality BiFeO3 based thin films using pulsed DC reactive sputtering, careful consideration must be given to the sputtering target. If an insulating target for RF sputtering is used in this pulsed DC reactive sputtering, not only does arc discharge occur frequently, but also the thin film composition differs significantly from the target composition. Therefore, the target must be conductive. We found that BiFeO3 based thin films fabricated using a specially designed target exhibit better conductivity, fewer arc discharges, and improved crystallinity of the thin film, resulting in a larger saturation magnetization and appreciable ferroelectric properties.
磁电多铁薄膜被认为是开发下一代低功耗磁性器件的关键。这是由于铁电性和铁磁性在同一相中共存,这使得它能够通过施加电场来控制磁化。铋铁氧体(BiFeO3)基材料就是这样一个有前途的竞争者,具有许多优点。由于晶体结构(包括氧原子)非常复杂,因此以薄膜形式制造这些材料非常具有挑战性。这种制备方法对薄膜的结构和铁电、铁磁性能起着至关重要的调节作用。在本研究中,我们采用脉冲直流反应溅射法制备了BiFeO3基薄膜,并将其晶体结构、磁性和铁电性能与射频溅射法制备的薄膜进行了比较。用脉冲直流反应溅射制备的薄膜具有优异的晶体结构、磁性和绝缘性能。研究发现,脉冲直流反应溅射的饱和磁化强度(72 emu/cm³)明显高于射频溅射(48 emu/cm³)。泄漏电流从10 - 5a提高到10 - 7a。因此,在使用脉冲直流反应溅射制备高质量BiFeO3基薄膜时,必须仔细考虑溅射目标。如果在脉冲直流反应溅射中使用射频溅射用绝缘靶材,不仅会频繁发生电弧放电,而且薄膜成分与靶材成分存在明显差异。因此,靶材必须是导电的。我们发现,使用特殊设计的靶材制备的BiFeO3基薄膜具有更好的导电性,更少的电弧放电,并且薄膜的结晶度得到改善,从而获得更高的饱和磁化强度和可观的铁电性能。
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引用次数: 0
Fe(III)-Salicylhydroxamic acid complex as a potential therapeutic agent: Synthesis, Kinetic evaluation, and molecular targeting in hepatocellular carcinoma 铁(III)-水杨酸羟肟酸配合物作为潜在治疗剂:肝细胞癌的合成、动力学评价和分子靶向
IF 4.3 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-06-01 Epub Date: 2026-01-17 DOI: 10.1016/j.chphi.2026.101013
Muhammad Perviaz , Shazia Nisar , Ali Zafar , Hafiza Saliha Warda , Awais Ali Aslam , Muhammad Shahid Nazir , Khayala Mammadova , Amjad Hussain , Ajmal Khan , Ahmed Al-Harrasi
Hepatocellular carcinoma (HCC), a leading cause of cancer-related mortality worldwide, driven by complex molecular alterations, including dysregulation of iron metabolism, oxidative stress, and redox imbalance, which promote tumor progression via iron-dependent oncogenic pathways. The conventional therapies for HCC face limitations including drug resistance and systemic toxicity, necessitating the development of novel multi-targeted therapeutic agents. In this context, the Fe (III)-salicylhydroxamic acid (Fe (III)-SHA) complex, synthesized through a simple aqueous-ethanol procedure, emerges as a promising redox-active compound with potential anticancer activity. This study investigates the redox kinetics of Fe (III)-SHA upon reduction by ascorbic acid and evaluates its therapeutic potential against key HCC-associated proteins: EGFR, BRAF, VEGFR3, and UFO, using computational drug discovery approaches. Kinetic profiling revealed a pH-dependent second-order reaction with a maximum rate constant (k₂) of 16.26 M⁻¹s⁻¹ at pH 5.0, indicating efficient redox reactivity under physiologically relevant conditions. Molecular docking studies demonstrated strong binding affinities, particularly with VEGFR3 (-7.6 kcal/mol), and stable interactions involving hydrogen bonding, hydrophobic forces, and metal coordination. Pharmacokinetic preclinical analysis confirmed favorable drug-like properties, including high solubility, gastrointestinal absorption, and a bioavailability score of 0.55. Collectively, these findings support the dual role of Fe (III)-SHA in modulating redox balance and targeting multiple oncogenic proteins, positioning it as a potential multi-target anticancer “drug candidate” for HCC treatment. While the current results are limited to redox kinetics and computational analyses, this work provides a strong rationale for further biological investigation and future in vitro and in vivo validation of Fe (III)-SHA as a drug candidate for HCC therapy.
肝细胞癌(HCC)是全球癌症相关死亡的主要原因,由复杂的分子改变驱动,包括铁代谢失调、氧化应激和氧化还原失衡,这些改变通过铁依赖性致癌途径促进肿瘤进展。HCC的传统治疗方法面临耐药和全身毒性等局限性,需要开发新的多靶点治疗药物。在这种情况下,铁(III)-水杨酸-羟基肟酸(Fe (III)-SHA)配合物通过简单的水-乙醇工艺合成,成为一种具有潜在抗癌活性的有前途的氧化还原活性化合物。本研究研究了Fe (III)-SHA在抗坏血酸还原后的氧化还原动力学,并利用计算药物发现方法评估了其对关键hcc相关蛋白(EGFR, BRAF, VEGFR3和UFO)的治疗潜力。动力学分析揭示了一个依赖pH的二级反应,在pH 5.0时最大速率常数(k₂)为16.26 M -⁻¹,表明在生理相关条件下具有有效的氧化还原反应性。分子对接研究表明,它具有很强的结合亲和性,特别是与VEGFR3 (-7.6 kcal/mol),并且具有氢键、疏水力和金属配位等稳定的相互作用。药代动力学临床前分析证实了其良好的药物样特性,包括高溶解度、胃肠道吸收和0.55的生物利用度评分。总的来说,这些发现支持Fe (III)-SHA在调节氧化还原平衡和靶向多种致癌蛋白方面的双重作用,将其定位为HCC治疗的潜在多靶点抗癌“候选药物”。虽然目前的结果仅限于氧化还原动力学和计算分析,但这项工作为进一步的生物学研究和未来的体外和体内验证Fe (III)-SHA作为HCC治疗的候选药物提供了强有力的理论依据。
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引用次数: 0
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Chemical Physics Impact
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