Doklady Physical Chemistry最新文献

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Luminescence Features of Composite Films Based on Anisometric Complexes of Europium(III) and Terbium(III) Doped into a Polylactide Matrix 铕(III)和铽(III)非等尺寸配合物掺杂聚丙交酯复合膜的发光特性
IF 1.1 4区 化学
Doklady Physical Chemistry Pub Date : 2026-10-16 DOI: 10.1134/S001250162660049X
R. M. Ziyatdinova, A. A. Knyazev, Yu. G. Galyametdinov
{"title":"Luminescence Features of Composite Films Based on Anisometric Complexes of Europium(III) and Terbium(III) Doped into a Polylactide Matrix","authors":"R. M. Ziyatdinova,&nbsp;A. A. Knyazev,&nbsp;Yu. G. Galyametdinov","doi":"10.1134/S001250162660049X","DOIUrl":"10.1134/S001250162660049X","url":null,"abstract":"<p>New composite films based on a polylactide (PLA) matrix and Eu(III) and Tb(III) tris(β-diketonate) complexes with 1,10-phenanthroline were synthesized, and their optical properties were studied. To obtain films with varying phosphor concentrations, solutions of mixed Tb(III), Eu(III), and PLA complexes in toluene were deposited onto a quartz substrate using spin-coating. Composites based on lanthanide complexes and polymers exhibit improved photoluminescence properties, thermal stability, and flexibility due to the uniform distribution of the complex within the polymer macromolecular chains. In this regard, polylactide is an ideal matrix for rare earth ions due to its optical properties, processability, comparatively low cost, and suitability for 3D printing. Therefore, the production and study of new composite materials based on lanthanide(III) coordination compounds and polylactide polymer is a highly interesting and relevant task. It was established that high ligand coordination increases the photostability of the complexes, while long hydrocarbon substituents in the structure prevented their crystallization and facilitated good miscibility with the polymer, which allowed for an increase in the phosphor content in the polymer matrix and the achievement of maximum emission at higher concentrations of the emitting ion. In the emission spectra of the films, with increasing phosphor concentration, the luminescence intensity increases and reaches a maximum for the Tb(III) complex at 12.5 wt % and for the Eu(III) complex at 20 wt %, respectively. This was due to concentration quenching of luminescence. Moreover, for most similar systems based on lanthanide compounds known from the literature, the effective phosphor content typically does not exceed 5–10%. The films were virtually transparent in the visible and IR regions (transmittance greater than 90%) and exhibited absorption in the ultraviolet region. Thus, it has been shown that the structural features of anisometric compounds allow the production of composite materials with significantly less luminescence self-quenching than their analogs. This opens up broader possibilities for the application of Ln(III) coordination compounds as polyfunctional film materials for optics and optoelectronics.</p>","PeriodicalId":532,"journal":{"name":"Doklady Physical Chemistry","volume":"521 3","pages":"109 - 115"},"PeriodicalIF":1.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aggregation Behavior and Micellization Thermodynamics of Cetyltrimethylammonium Bromide–Ofloxacin Mixture in Glucose and Urea Media 十六烷基三甲基溴化铵-氧氟沙星混合物在葡萄糖和尿素介质中的聚集行为和胶束热力学
IF 1.1 4区 化学
Doklady Physical Chemistry Pub Date : 2026-10-16 DOI: 10.1134/S0012501626600385
Abhishek Srivastava, Anand Mohan Srivastava, Krishna Srivastava
{"title":"Aggregation Behavior and Micellization Thermodynamics of Cetyltrimethylammonium Bromide–Ofloxacin Mixture in Glucose and Urea Media","authors":"Abhishek Srivastava,&nbsp;Anand Mohan Srivastava,&nbsp;Krishna Srivastava","doi":"10.1134/S0012501626600385","DOIUrl":"10.1134/S0012501626600385","url":null,"abstract":"<p>—This research utilizes conductivity measurements to provide insight into the temperature-driven micellization of cetyltrimethylammonium bromide (CTAB) with the antibiotic drug ofloxacin (OFX), while also highlighting the impact of urea and glucose on the aggregation of the CTAB–OFX combination. The addition of OFX facilitated the micellization of CTAB. Glucose, via hydrogen bonding with water molecules, makes the solvent environment less favorable for the hydrophobic segments of the CTAB and urea, by diminishing hydrophobic interactions, impeding micelle formation, hence elevating the CMC of the CTAB–OFX mixture. The interaction between CTAB and OFX has been characterized employing physicochemical variables (counterion dissociation, α; and CMC) and thermodynamic parameters (entropy of micellization, Δ<i>S</i><span>(_{m}^{0})</span>; Gibbs energy of micellization, Δ<i>G</i><span>(_{m}^{0})</span>; and enthalpy of micellization, Δ<i>H</i><span>(_{m}^{0})</span>). The spontaneity of micellization in the CTAB–OFX combination in both water and urea/glucose conditions is depicted by the negative Δ<i>G</i><span>(_{m}^{0})</span> results. Negative Δ<i>S</i><span>(_{m}^{0})</span> and Δ<i>H</i><span>(_{m}^{0})</span> values indicate the predominance of H-bonding, while positive Δ<i>S</i><span>(_{m}^{0})</span> and Δ<i>H</i><span>(_{m}^{0})</span> values denote a hydrophobic relationship. The CTAB–OFX combination’s +Δ<i>S</i><span>(_{m}^{0})</span> and –Δ<i>H</i><span>(_{m}^{0})</span> results reveal that both hydrophobic and electrostatic interactions are most probably engaged in the OFX-induced micellization of CTAB. The findings provide essential insights for researchers seeking to enhance parameters such as temperature, surfactant concentration, and the additive (urea and glucose) content, thereby augmenting the efficacy and resilience of drug delivery systems.</p>","PeriodicalId":532,"journal":{"name":"Doklady Physical Chemistry","volume":"521 2","pages":"97 - 108"},"PeriodicalIF":1.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of Photocatalytic Properties of g-C3N4/ZnIn2S4 Composites g-C3N4/ZnIn2S4复合材料光催化性能研究
IF 1.1 4区 化学
Doklady Physical Chemistry Pub Date : 2026-10-16 DOI: 10.1134/S0012501626600105
R. R. Shamilov, Z. M. Muzipov, Yu. G. Galyametdinov
{"title":"Study of Photocatalytic Properties of g-C3N4/ZnIn2S4 Composites","authors":"R. R. Shamilov,&nbsp;Z. M. Muzipov,&nbsp;Yu. G. Galyametdinov","doi":"10.1134/S0012501626600105","DOIUrl":"10.1134/S0012501626600105","url":null,"abstract":"<p>The increasing concentration of persistent organic pollutants in aquatic ecosystems, driven by industrial discharges, poses a serious threat to the environment and human health. The insufficient efficiency of conventional treatment methods highlights the need for the development of new, more advanced, and cost-effective technologies. In this work, a composite photocatalyst g‑C<sub>3</sub>N<sub>4</sub>/ZnIn<sub>2</sub>S<sub>4</sub> with a component mass ratio of 1:1 was synthesized. FTIR and UV‑Vis spectroscopy confirmed the preservation of the carbon nitride structure in the composite and revealed a narrowing of the band gap from 2.81 to 2.35 eV, enabling light absorption over a broader range of the visible spectrum. The formation of the composite led to a multiple increase in adsorption capacity toward methylene blue (up to ~165 mg/g). In the photocatalytic degradation of rhodamine B under visible light (LED, 450 nm), the composite exhibited a synergistic effect: the apparent pseudo-first-order rate constant was 0.061 min<sup>–1</sup>, which is 3.3 and 1.5 times higher than that for pristine g‑C<sub>3</sub>N<sub>4</sub> and ZnIn<sub>2</sub>S<sub>4</sub>, respectively. The observed effect is attributed to the formation of an <i>S</i>‑scheme heterojunction, which ensures efficient charge carrier separation and suppresses their recombination. The obtained results indicate the promising potential of the composite for photocatalytic wastewater treatment.</p>","PeriodicalId":532,"journal":{"name":"Doklady Physical Chemistry","volume":"521 3","pages":"116 - 121"},"PeriodicalIF":1.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Harnessing Polar Aprotic Solvent Interfacial Interactions on Silica Cloth 利用极性非质子溶剂在二氧化硅布上的界面相互作用
IF 1.1 4区 化学
Doklady Physical Chemistry Pub Date : 2026-10-16 DOI: 10.1134/S0012501625600950
Joon Hyuk Lee, Jungkun Song, Eunkyung Jeon, Jaeho Choi
{"title":"Harnessing Polar Aprotic Solvent Interfacial Interactions on Silica Cloth","authors":"Joon Hyuk Lee,&nbsp;Jungkun Song,&nbsp;Eunkyung Jeon,&nbsp;Jaeho Choi","doi":"10.1134/S0012501625600950","DOIUrl":"10.1134/S0012501625600950","url":null,"abstract":"<p>The mechanical properties of silica cloth subjected to polar aprotic solvent treatment under ambient conditions, pressurization, and thermal exposure are investigated. The selected solvents of chloroform (CHCl<sub>3</sub>), <i>N-</i>methyl-2-pyrrolidone (NMP), and methanol (MeOH) exhibit distinct adsorption behaviors, influencing their mechanical reinforcement effects. Under ambient conditions, MeOH-treated samples exhibit the highest tensile strength due to strong hydrogen bonding, followed by NMP and CHCl<sub>3</sub>. Under 10 bar pressurization, NMP-treated samples surpass MeOH and CHCl<sub>3</sub> in tensile strength, indicating enhanced interfacial reinforcement. However, heat treatment at 180°C results in a significant decline in tensile strength, with CHCl<sub>3</sub>-treated samples demonstrating superior mechanical stability compared to NMP and MeOH, attributed to solvent desorption effects. Elongation trends follow a similar degradation pattern, with MeOH-treated samples experiencing the most pronounced brittleness. Tensile modulus analysis reveals that NMP and MeOH treatments reduce structural stiffness due to their dependence on interfacial bonding, whereas CHCl<sub>3</sub>-treated samples retain a higher modulus. Lastly, scanning electron microscopy analysis confirms the presence of solvent-induced degradation mechanisms, which contribute to tensile strength deterioration. These findings illustrate that adsorption strength governs mechanical behavior under ambient conditions, pressurization enhances interfacial reinforcement, and thermal exposure compromises solvent-induced strengthening.</p>","PeriodicalId":532,"journal":{"name":"Doklady Physical Chemistry","volume":"521 2","pages":"88 - 96"},"PeriodicalIF":1.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nickel Nanoparticles (NiNPs) as Potential Adsorbent for Acidic Dyes from Aqueous Solutions 镍纳米颗粒作为水溶液中酸性染料的潜在吸附剂
IF 1.1 4区 化学
Doklady Physical Chemistry Pub Date : 2026-10-16 DOI: 10.1134/S0012501625600688
Najeeb Ur Rehman, Muhammad Sufaid Khan, Noor Rehman, Sabahat Gul, Bushra Munir
{"title":"Nickel Nanoparticles (NiNPs) as Potential Adsorbent for Acidic Dyes from Aqueous Solutions","authors":"Najeeb Ur Rehman,&nbsp;Muhammad Sufaid Khan,&nbsp;Noor Rehman,&nbsp;Sabahat Gul,&nbsp;Bushra Munir","doi":"10.1134/S0012501625600688","DOIUrl":"10.1134/S0012501625600688","url":null,"abstract":"<p>In the present research study nickel nanoparticles (NiNPs) were prepared via reduction method. The NiNPs were characterized by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) is related to the particles surfaces and different elements presents as well as the particles size. The adsorption of Acid orange 8 (AO8) and Acid blue 25 (AB25) dyes onto NiNPs nanoparticles were performed. The effect of various parameters of adsorption, adsorbent dosage, contact time, temperature, and initial dye concentration were studied. The pH for both the adsorbed dyes was kept 1 to 4 with dosage 20 mg for both dyes respectively. The best adsorption kinetic model was pseudo second order kinetics for both dyes with closed unity value of R<sup>2</sup>. Among the applied (Temkin, Freundlich, and Langmuir) isotherm models, Langmuir isotherms followed both dyes which show chemisorption process. The thermodynamic parameters indicate that the standard change in enthalpy (Δ<i>H</i>°) is –8.46 and –7.54 kJ/mol for AO8 and AB25, respectively, indicates the exothermic adsorption. Isotherm models process for both dyes. While the positive standard change entropy (Δ<i>S</i>°) is 0.029 kJ/K for both dyes show disorder during adsorption process. The spontaneous adsorption process is due to free energy (Δ<i>G</i>°) –1.375 and –2.173 kJ/mol values at temperature of 333 K for both acidic dyes respectively. In the view of the above experimental results, suggested that NiNPs could be used a potential adsorbent for the removal of the acidic dyes from the aqueous solutions.</p>","PeriodicalId":532,"journal":{"name":"Doklady Physical Chemistry","volume":"521 2","pages":"63 - 75"},"PeriodicalIF":1.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bio-Inspired Fabrication of RGO/PANI Nanocomposites via Spirulina platensis for Enhanced Electrochemical Energy Storage 利用螺旋藻制备氧化石墨烯/聚苯胺纳米复合材料增强电化学储能
IF 1.1 4区 化学
Doklady Physical Chemistry Pub Date : 2026-10-16 DOI: 10.1134/S0012501625600779
D. Balakrishnan, L. Sugi, C. Usharani, C. Pragathiswaran, A. Subash, S. Ananthakrishnan, S. Ravichandran
{"title":"Bio-Inspired Fabrication of RGO/PANI Nanocomposites via Spirulina platensis for Enhanced Electrochemical Energy Storage","authors":"D. Balakrishnan,&nbsp;L. Sugi,&nbsp;C. Usharani,&nbsp;C. Pragathiswaran,&nbsp;A. Subash,&nbsp;S. Ananthakrishnan,&nbsp;S. Ravichandran","doi":"10.1134/S0012501625600779","DOIUrl":"10.1134/S0012501625600779","url":null,"abstract":"<p>Nanocomposites are often made of graphene, a special kind of nanocarbon nanostructure. In this report, an innovative, easy, and eco-friendly technique for generating polyaniline/reduced graphene oxide (PANI/RGO) composite material using Spirulina extract by the chemical oxidative method. The green reducing agents were eco-friendly and efficiently converted the GO into RGO. The PANI/RGO nanocomposites have been characterized by XRD, UV–Visible, Raman, FTIR, and CV spectrometers. Also, SEM and TEM have been used to further characterize the morphological properties of these composites. Nowadays, Due to environmental regulations in contemporary technology sectors, green-approached graphene has garnered attention and their nanocomposite has played a very important role in energy storage devices. Particularly, the advanced functions of PANI/RGO nanocomposites have changed recently with several movements in high-performance supercapacitors. Moreover, future research on innovative PANI/RGO nanocomposites could potentially surmount performance- and design-related obstacles for technical application.</p>","PeriodicalId":532,"journal":{"name":"Doklady Physical Chemistry","volume":"521 2","pages":"76 - 87"},"PeriodicalIF":1.1,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermodynamic and DFT-Based Analysis of Anti-Inflammatory Drug with D-Mannitol in Aqueous System 含d -甘露醇消炎药在水溶液中的热力学及dft分析
IF 1.1 4区 化学
Doklady Physical Chemistry Pub Date : 2026-07-02 DOI: 10.1134/S0012501625600809
Sumaira Shoukat, Muhammad Asghar Jamal, Faiz Ahmed, Majid Muneer
{"title":"Thermodynamic and DFT-Based Analysis of Anti-Inflammatory Drug with D-Mannitol in Aqueous System","authors":"Sumaira Shoukat,&nbsp;Muhammad Asghar Jamal,&nbsp;Faiz Ahmed,&nbsp;Majid Muneer","doi":"10.1134/S0012501625600809","DOIUrl":"10.1134/S0012501625600809","url":null,"abstract":"<p>The current research work combines thermo-acoustic measurements with density functional theory (DFT) analysis to elucidate the molecular interactions between the non-steroidal anti-inflammatory drug (NSAID) diclofenac sodium (DS) and the commonly used pharmaceutical excipient <i>D-</i>mannitol in an aqueous environment. It is crucial to comprehend drug-excipient interactions to maximize formulation performance. Density (ρ) and sound velocity (<i>u</i>) of above mentioned anti-inflammatory drug with various concentrations of <i>D-</i>mannitol in an aqueous system was measured at a temperature range 293.15–313.15 K and 101.325 kPa pressure. The observed data of density and sound velocity were further used to compute apparent and partial molar volume (<span>({{{not O}}_{{v}}},{not O}_{{v}}^{^circ })</span>), transfer of partial molar volume (<span>({{Delta }_{{operatorname{tr} }}}{not O}_{{v}}^{^circ })</span>), apparent and partial molar compressibility (<span>({{{not O}}_{k}},{not O}_{k}^{^circ })</span>), adiabatic compressibility (β), and hydration number (<i>n</i><sub>H</sub>). Pair and triplet interaction coefficients, <i>V</i><sub>AB</sub> and <i>V</i><sub>ABB</sub>, indicate the domination of pairwise interaction. Positive values of <span>({{Delta }_{{operatorname{tr} }}}{not O}_{{v}}^{^circ })</span> for the investigated system indicate the predominant ion-hydrophilic/hydrophilic interactions. The DFT calculations confirm that hydrogen bonding and ion-hydrophilic interactions are being strengthened in an aqueous phase. These findings are consistent with the hydrogen bonding capability of mannitol and its capacity to modulate the local solvent structure, providing a mechanistic foundation for rational excipient selection and formulation optimization.</p>","PeriodicalId":532,"journal":{"name":"Doklady Physical Chemistry","volume":"521 1","pages":"24 - 35"},"PeriodicalIF":1.1,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gold Nanoparticle-Capped Oligonucleotides Method of Nucleic Acid Detection Using Four-Way Junction DNA Probes 四路结DNA探针核酸检测的金纳米颗粒覆盖寡核苷酸方法
IF 1.1 4区 化学
Doklady Physical Chemistry Pub Date : 2026-07-02 DOI: 10.1134/S0012501625600925
M. Bobkova, P. Filatov, P. Luganskaya, G. Bobkov, D. Gorbenko
{"title":"Gold Nanoparticle-Capped Oligonucleotides Method of Nucleic Acid Detection Using Four-Way Junction DNA Probes","authors":"M. Bobkova,&nbsp;P. Filatov,&nbsp;P. Luganskaya,&nbsp;G. Bobkov,&nbsp;D. Gorbenko","doi":"10.1134/S0012501625600925","DOIUrl":"10.1134/S0012501625600925","url":null,"abstract":"<p>A local surface plasmon resonance (LSPR)-based biosensor utilizing four-way junction (4WJ) DNA probes and gold nanoparticles (Au NPs) was developed for detection and genotyping of <i>Mycobacterium tuberculosis</i>. The sensor combines Au nanorods functionalized with a 4WJ probe and universal molecular beacon (UMB)-capped Au nanospheres, enabling target-induced nanoparticle assembly only in a presence of specific DNA analyte. These sensors achieved a limit of detection (LOD) of 8.5 nM for rifampicin-resistant <i>M. tuberculosis</i> DNA for fluorescent detection and 50 nM for LSPR detection, demonstrating specificity for single-nucleotide variation (SNV) discrimination in the <i>vapC37</i> gene. The approach offers a new cost-effective, rapid combination of 2 technologies: conventional SPR microscopy and 4WJ probes, with potential post-amplification applications in point-of-care tuberculosis diagnostics.</p>","PeriodicalId":532,"journal":{"name":"Doklady Physical Chemistry","volume":"521 1","pages":"45 - 52"},"PeriodicalIF":1.1,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Impact of Applied Potential on Nucleation Mechanism in the Early Stages of Nanostructured Indium Thin Film Electrodeposition 应用电位对纳米结构铟薄膜电沉积早期成核机制的影响
IF 1.1 4区 化学
Doklady Physical Chemistry Pub Date : 2026-07-02 DOI: 10.1134/S0012501625600639
Oualid Dilmi, Hadjira Benhedid, Rabah Asseli
{"title":"Impact of Applied Potential on Nucleation Mechanism in the Early Stages of Nanostructured Indium Thin Film Electrodeposition","authors":"Oualid Dilmi,&nbsp;Hadjira Benhedid,&nbsp;Rabah Asseli","doi":"10.1134/S0012501625600639","DOIUrl":"10.1134/S0012501625600639","url":null,"abstract":"<p>In this study, cyclic voltammetry and chronoamperometry techniques were employed to investigate the effect of applied potential on the electrocrystallization kinetics of indium electrodeposition onto platinum and indium tin oxide (ITO) substrates. The deposition was carried out in an acidic medium (pH 4) containing indium trichloride (InCl<sub>3</sub>) and sodium citrate at room temperature. Potentiostatic current transients were analyzed based on the Scharifker–Hills model. The surface morphology of the indium deposits was examined using scanning electron microscopy (SEM), while atomic force microscopy (AFM) was utilized to assess surface roughness. Results revealed that the nucleation of indium on the platinum substrate follows an instantaneous mechanism with three-dimensional hemispherical growth. The maximum current density (<i>i</i><sub>m</sub>) increased linearly with the applied potential, whereas the nucleation density (<i>N</i><sub>0</sub>) and the time to reach maximum current (<i>t</i><sub>m</sub>) showed an exponential dependence on it. At deposition potentials of –1.2 and –1.3 V, the indium grains exhibited spherical morphology with nanoscale dimensions and relatively smoother surfaces.</p>","PeriodicalId":532,"journal":{"name":"Doklady Physical Chemistry","volume":"521 1","pages":"53 - 62"},"PeriodicalIF":1.1,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic Theoretical and Experimental Investigation of Novel Quinacridone-Based Chromophores for Textile Applications 纺织用新型喹吖啶酮类发色团的协同理论与实验研究
IF 1.1 4区 化学
Doklady Physical Chemistry Pub Date : 2026-07-02 DOI: 10.1134/S0012501625600937
Yaqoob Shah, Muhammad Ramzan Saeed Ashraf Janjua, Asim Mansha, Muhammad Asif Javaid, Muhammad Tahir Hussain
{"title":"Synergistic Theoretical and Experimental Investigation of Novel Quinacridone-Based Chromophores for Textile Applications","authors":"Yaqoob Shah,&nbsp;Muhammad Ramzan Saeed Ashraf Janjua,&nbsp;Asim Mansha,&nbsp;Muhammad Asif Javaid,&nbsp;Muhammad Tahir Hussain","doi":"10.1134/S0012501625600937","DOIUrl":"10.1134/S0012501625600937","url":null,"abstract":"<p>The contemporary textile industry is increasingly seeking chromophores that can provide vibrant, long-lasting coloration and minimizing environmental impact. Effective performance relies on chromophores exhibiting pronounced colorimetric intensity, strong fiber-dye affinity, and superior thermal and photochemical stability, all of which are essential for sustainable, high-performance textile applications. A series of structurally customized quinacridone-derived dyes were developed, modeled, and synthesized to provide better chromatic depth, enhanced fastness properties, increased heat resistance, and strong dye-fiber affinity. Density functional theory was used to clarify molecular structures. Fourier transform infrared spectroscopy (FTIR) and liquid chromatography-mass spectrometry (LC-MS) were used for thorough spectroscopic validation. The electronic excitation characteristics of the synthesized derivatives R, QR1, QR2, and QR3 were interrogated through a combined theoretical-experimental framework. Among these systems, QR3 manifested the most pronounced bathochromic displacement, exhibiting λ<sub>max</sub> values of 560 nm, computed using the CAM-B3LYP functional with the aug-cc-pVTZ basis set and 562 nm as verified experimentally. This derivative further distinguished itself by demonstrating exceptional resilience toward photo-degradation, aqueous laundering and mechanical abrasion, underscoring its superior fastness behaviour. Frontier molecular orbital analysis revealed substantial molecular polarizability and a well-defined intramolecular charge-transfer trajectory extending from donor-enriched HOMO orbitals toward acceptor-centered LUMO domains. The structural integrity of all derivatives, including elemental composition and molar mass, was unequivocally substantiated through liquid chromatography-mass spectrometry and Fourier transform infrared spectroscopy. Dye-fiber interaction studies yielded exhaustion and fixation efficiencies in the 55–65% range, indicating effective substrate affinity. Colorimetric profiling within the CIELAB space generated favorable L*, a*, b*, C*, and h* coordinates across the series, with QR1–QR3 attaining an h* values of 291.34, 279.94, and 210.03, consistent with a distinctly dense chromatic signatures. Collectively, these observations designate engineered quinacridone derivatives Q1–QR3 as compelling contenders for next-generation, high-performance textile coloration technologies.</p>","PeriodicalId":532,"journal":{"name":"Doklady Physical Chemistry","volume":"521 1","pages":"11 - 23"},"PeriodicalIF":1.1,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148357850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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