Optical Materials最新文献

{"title":"Encapsulation of molecular chromophores in phosphate glass towards improved stability against photodegradation","authors":"Emmanouil Nikoloudakis ,&nbsp;Ioannis Konidakis ,&nbsp;Harris Goniotakis ,&nbsp;Eleni Agapaki ,&nbsp;Klytaimnistra Katsara ,&nbsp;George Kenanakis ,&nbsp;Athanassios G. Coutsolelos ,&nbsp;Emmanuel Stratakis","doi":"10.1016/j.optmat.2025.116952","DOIUrl":"10.1016/j.optmat.2025.116952","url":null,"abstract":"<div><div>In this study molecular porphyrin chromophores have been successfully vitrified in AgPO₃ glass via a simple, low-temperature, post-melting encapsulation procedure. Their controlled incorporation within the phosphate glass network results to enhanced stability against visible light exposure while preserved their structural integrity. This simple method ensures the optical and electronic properties of porphyrins remain intact, rendering the developed composite porphyrin-glasses suitable for light-harvesting and photocatalytic applications. The AgPO₃ glass matrix acts as a protective barrier, shielding porphyrins from environmental factors. This scalable, cost-effective technique eliminates the need for chemical modifications or anchoring groups, offering a robust pathway for integrating molecular chromophores into transparent optical media for advanced functional applications.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116952"},"PeriodicalIF":3.8,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonlinear optical properties and stability of Ag/Pt bimetallic nanoparticles in α−Al2O3","authors":"Oswaldo Sánchez-Dena ,&nbsp;Juan-Pablo Cordero-Santiago ,&nbsp;Jorge Alejandro Reyes-Esqueda ,&nbsp;Alejandro Crespo-Sosa","doi":"10.1016/j.optmat.2025.116920","DOIUrl":"10.1016/j.optmat.2025.116920","url":null,"abstract":"<div><div>Metallic nanoparticles are well known to have interesting optical properties. However, a good understanding of those properties still needs to be added in order to be able to control them entirely for future optoelectronic applications. Metallic nanoparticles are still more promising but must be understood because further parameters play essential roles in their formation and transformations. In this paper, we present the results of measurements of the nonlinear optical absorption and refractive index of an oversaturated solid solution of Ag and Pt in <span><math><mrow><mi>α</mi><mo>−</mo><mi>A</mi><msub><mrow><mi>l</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi>O</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span>, as well as of <span><math><mrow><mi>A</mi><msub><mrow><mi>g</mi></mrow><mrow><mn>15</mn></mrow></msub><mi>P</mi><msub><mrow><mi>t</mi></mrow><mrow><mn>17</mn></mrow></msub></mrow></math></span> alloyed nanoparticles and <span><math><mrow><mi>P</mi><mi>t</mi><mo>−</mo><mi>A</mi><mi>g</mi></mrow></math></span> core–shell nanoparticles. Our results indicate that at high irradiance levels, the two former configurations transform into the latter one during the measurements.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116920"},"PeriodicalIF":3.8,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the quenching mechanism of metal ions using solvent-driven N, S-doped carbon quantum dots","authors":"Jingyan Yu,&nbsp;Rajendran Kalimuthu,&nbsp;Xingchen Liu,&nbsp;Wengao Zhang,&nbsp;Yonggen Tan,&nbsp;Kun Yan,&nbsp;Shenglin Ye,&nbsp;Jun Feng","doi":"10.1016/j.optmat.2025.116948","DOIUrl":"10.1016/j.optmat.2025.116948","url":null,"abstract":"<div><div>Carbon quantum dots (CQDs) hold great potential as fluorescence probes due to their tunable optical properties, but remain challenges in tailoring surface functionalization for selective metal ion detection, which is essential for environmental monitoring and water quality analysis. This work, synthesized nitrogen and sulfur co-doped carbon quantum dots (N, S-CQDs) were via a one-pot solvothermal method with two different solvents, N, N-dimethylformamide (DMF) and acetone. The influences of solvent selectivity on the surface functionality of CQDs and their fluorescence quenching mechanisms were evaluated in both experimental and computational methods. To represent CQDs surfaces, density functional theory (DFT) calculations of the total density of states (TDOS) and partial density of states (PDOS) were conducted. Our findings revealed that synthesized CQDs in DMF and acetone exhibited fluorescence quenching as static and dynamic. We have achieved the highest quantum yields of 37.85 % and 28.59 %. This shows excellent sensitivities of Fe³⁺ at 0.82 μM and 1.19 μM for Co²⁺. Furthermore, the study extended to validated in real water sample analysis. This approach enabled the development of a novel strategy for the selective and sensitive detection of Fe³⁺ and Co²⁺ ions.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116948"},"PeriodicalIF":3.8,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"(Het)aryl-substituted monoazatriphenylenes as luminescent “turn-off” chemosensors for nitroaromatic compounds with internal filter effect correction","authors":"L.K. Sadieva ,&nbsp;A.F. Khasanov ,&nbsp;T.I. Shendrikova ,&nbsp;I.L. Nikonov ,&nbsp;D.S. Kopchuk ,&nbsp;O.S. Taniya ,&nbsp;G.A. Kim ,&nbsp;A.S. Novikov ,&nbsp;O.V. Shabunina ,&nbsp;G.V. Zyryanov ,&nbsp;V.N. Charushin","doi":"10.1016/j.optmat.2025.116949","DOIUrl":"10.1016/j.optmat.2025.116949","url":null,"abstract":"<div><div>(Het)aryl-substituted monoazatriphenylenes with an extended conjugated system were synthesized from 1,2,4-triazines <em>via</em> Boger reaction, and their photophysical properties were studied, including aggregation induced emission (AIE), as well as fluorescence “<em>turn-off</em>” response to nitroexplosives. Although obtained compounds showed fluorescence “<em>turn-off</em>” sensory response to the presence of all common nitroaromatic explosives, such as 2,4-dinitrotoluene (2,4-DNT), 2,4,6-trinitrotoluene (TNT) and 2,4,6-trinitrophenol (picric acid, PA), a well pronounced selectivity to PA was observed, and the fluorescence quenching efficiency was not based on inner filter effect (IFE). For the most representative chemosensor, the highest Stern-Volmer fluorescence quenching constant of 5.93 × 10⁶ M⁻¹ with quenching efficiency of 99.68 % was observed in the presence of PA with a limit of detection as low as 33.4 ppm.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116949"},"PeriodicalIF":3.8,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Color centers in doped and undoped LiF irradiated with 18 MeV electrons","authors":"O.M. Pop,&nbsp;I.G. Megela,&nbsp;V.T. Maslyuk,&nbsp;J.J. Hainish,&nbsp;M.P. Vizenko,&nbsp;I. Yu Roman,&nbsp;V.I. Roman","doi":"10.1016/j.optmat.2025.116942","DOIUrl":"10.1016/j.optmat.2025.116942","url":null,"abstract":"<div><div>The regularities of the formation of color centers in crystals of undoped LiF and doped Mg, Ti, as a result of irradiation with electrons of 18 MeV at room temperature, have been studied. Based on the results obtained, it was concluded that many technological defects existed in the samples used. The primary mechanism for the formation of color centers is the creation of nonequilibrium charge carriers due to the ionizing effect of incident electrons.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116942"},"PeriodicalIF":3.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of the optical band gap and electronic transition type of powdered Ca2Fe2O5 brownmillerite","authors":"S. F. Armendáriz,&nbsp;P. Amézaga-Madrid,&nbsp;S. F. Olive-Méndez,&nbsp;F. Espinosa-Magaña,&nbsp;D. Lardizábal-Gutiérrez","doi":"10.1016/j.optmat.2025.116947","DOIUrl":"10.1016/j.optmat.2025.116947","url":null,"abstract":"<div><div>In this study, powdered Ca₂Fe₂O₅ was synthesized via a sol-gel method and characterized using scanning electron microscopy (SEM), energy dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), and ultraviolet–visible–near infrared diffuse reflectance spectroscopy (UV–Vis–NIR DRS). The morphology of the particles was analyzed with SEM, the elemental composition was studied with EDX and XRD; the latter, along with ATR-FTIR, confirmed both the crystal phase and sample purity. The novelty of this study lies in the application of two recently developed methods for analyzing UV–Vis/NIR data, which allow the determination of the Tauc exponent when calculating the optical band gap from Tauc plots. Both methods indicated an indirect electronic transition in Ca₂Fe₂O₅, with the resulting optical band gap value being 1.62 eV. This indirect transition aligns with the results from theoretical works on the electronic band structure of the material. However, the obtained band gap is substantially lower than those reported in previous theoretical and experimental reports.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116947"},"PeriodicalIF":3.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Generation and manipulation of focused high-order Poincaré sphere beams via optical metasurfaces","authors":"Yuqin Zhang ,&nbsp;Xuehui Zhang ,&nbsp;Haoran Zhou ,&nbsp;Jianshan An ,&nbsp;Zhanliang Mu ,&nbsp;Weiye Yuan ,&nbsp;Yutian Guo ,&nbsp;Changwei He ,&nbsp;Chuanfu Cheng ,&nbsp;Hongsheng Song","doi":"10.1016/j.optmat.2025.116945","DOIUrl":"10.1016/j.optmat.2025.116945","url":null,"abstract":"<div><div>This paper investigates the generation and manipulation of focused high-order Poincaré sphere vector beams with constant annular intensity profiles and arbitrary phase and polarization distributions using an optical metasurface. The proposed design employs a nanoslit pair unit, consisting of orthogonal rectangular nanoslits arranged according to Fresnel zone plate formula. This configuration enables flexible control of phase and amplitude of wavefield by leveraging geometric and propagation phases under circularly polarized vortex beam illumination. By varying the topological charge <em>l</em> of incidence, the optical path difference <em>d</em>, the rotate order <em>q</em>, and the initial orientation angle <em>α</em>₀ of the nanoslit pairs, this method facilitates the creation of diverse high-order Poincaré sphere vector beams. Both simulations and experiments validate the approach, demonstrating its efficacy and potential applications in polarization optics and light-matter interactions.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116945"},"PeriodicalIF":3.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural, mechanical and luminescence characteristics of gadolinium orthoniobate-tantalates doped with Tb, Er and Eu","authors":"M.N. Palatnikov,&nbsp;O.B. Shcherbina,&nbsp;M.V. Smirnov,&nbsp;S.M. Masloboeva","doi":"10.1016/j.optmat.2025.116950","DOIUrl":"10.1016/j.optmat.2025.116950","url":null,"abstract":"<div><div>Powders of gadolinium orthoniobate-tantalate doped by terbium, erbium and europium with the general formula Gd_0.979Tb_0.01Er_0.01Eu_0.001Nb_xТа_1-xO₄ (x = 0, 0.1, 0.3, 0.5, 0.7, 0.9, 1) were synthesized by liquid-phase method. The influence of composition of Gd_0.979Tb_0.01Er_0.01Eu_0.001Nb_xТа_1-xO₄ ceramics on structural, mechanical and luminescence properties was studied. The structural parameters of the main phase of Gd_0.979Tb_0.01Er_0.01Eu_0.001Nb_xТа_1-xO₄ ceramics were calculated. The main phases of samples had the structure of monoclinic β-fergusonite. Increasing Ta content in obtained samples led to appearing a small amount (3–4 %) of orthorhombic phase Gd_0.333TaO₃. The morphological features of microstructure of ceramic samples were studied and their mechanical characteristics were evaluated. It was shown that Gd_0.979Tb_0.01Er_0.01Eu_0.001Nb_0.7Ta_0.3O₄ had the best mechanical characteristics. The study of photoluminescent properties of Gd_0.979Tb_0.01Er_0.01Eu_0.001Nb_xТа_1-xO₄ ceramics had shown that isomorphic substitution in the niobium-tantalum sublattice led to positional disorder of cations in the B-sublattice, which stimulated luminescence of rare-earth elements particularly Tb³⁺ cations. Thus, in Gd_0.979Tb_0.01Er_0.01Eu_0.001Nb_xТа_1-xO₄ ceramics there was a special concentration point (Nb:Ta = 1) at which the luminescence intensity was maximal. It was shown that as the Nb content decreased in the structure of Gd_0.979Tb_0.01Er_0.01Eu_0.001Nb_xТа_1-xO₄ ceramics the value of charge transfer energy between intrinsic luminescence centers and doped elements increased as well as splitting of multiplets into Stark levels increased due to the change of both distance between Me-Re (Me – Ta, Nb; Re – Tb, Er, Eu) and polarisation of ReO₈ polyhedron.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"163 ","pages":"Article 116950"},"PeriodicalIF":3.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tailoring of optoelectronic and trapping effects in ZnO and ZnO:Mg 1D structures for DSSC photoelectrodes","authors":"A.I. Espinoza-Duarte ,&nbsp;A.L. Leal-Cruz ,&nbsp;A. Vera-Marquina ,&nbsp;R. Gómez-Fuentes ,&nbsp;A. Garzón-Roman ,&nbsp;C. Zúñiga-Islas","doi":"10.1016/j.optmat.2025.116943","DOIUrl":"10.1016/j.optmat.2025.116943","url":null,"abstract":"<div><div>This work is focused on tailoring optoelectronic behavior and trapping effects in ZnO and ZnO:Mg 1D nanostructures intended for DSSC photoelectrodes. ZnO and ZnO:Mg deposits on FTO-glass substrates were obtained by the CBD method at a relatively low temperature (90 °C) and short processing time (2 h). In addition, magnesium was incorporated as a dopant and varied (1 and 2 at. %) to obtain ZnO:Mg deposits with different optoelectronic and morphological characteristics. SEM results revealed the morphological evolution of ZnO deposits, transitioning from nanotubes to nanorods as the Mg increases from 0 to 2 at. %. Raman and XPS spectroscopies confirmed the formation of ZnO Wurtzite structures, as well as the incorporation of Mg ions in the ZnO host lattice. On the other hand, UV–Vis DRS revealed a significant influence of Mg ion concentration on the reflectance and optical bandgap of ZnO deposits. PL results indicated that both ZnO and ZnO:Mg deposits are rich in defects and traps induced by Mg incorporation, enabling the tailoring of optoelectronic properties. Additionally, when Mg at. % increases, UV, blue, and infrared emissions are quenched, while yellow emissions are enhanced. Lastly, a comprehensive analysis of the characteristics and behavior of resulting materials indicates that ZnO:Mg with 1 at. % of Mg exhibits the best attributes for photoelectrode, such as increased surface area, enhanced crystalline quality, and reduced recombination rates and defects. Noteworthy is that resulting materials exhibit those crucial characteristics required for DSSC photoelectrodes applications, and they could be considered for flexible electronic applications.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116943"},"PeriodicalIF":3.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reduced graphene oxide-carbon nanotubes nanocomposites-decorated porous silver nanodendrites for highly efficient SERS sensing","authors":"Nguyen Thi Huyen ,&nbsp;Luong Truc Quynh Ngan ,&nbsp;Le Thi Quynh Xuan ,&nbsp;Tran Ai Suong Suong ,&nbsp;Cao Thi Thanh ,&nbsp;Nguyen Van Tu ,&nbsp;Pham Thanh Binh ,&nbsp;Tran Van Tan ,&nbsp;Nguyen Viet Tuyen ,&nbsp;Dao Tran Cao ,&nbsp;Pham Van Hai ,&nbsp;Vu Xuan Hoa ,&nbsp;Nguyen Van Chuc","doi":"10.1016/j.optmat.2025.116935","DOIUrl":"10.1016/j.optmat.2025.116935","url":null,"abstract":"<div><div>In this study, an innovative nanocomposite of reduced graphene oxide-carbon nanotubes/porous silver dendrites (rGO-CNTs/pAgDs) was formed on silicon substrate using a straightforward plasma jet technique. This nanocomposite was employed as a surface-enhanced Raman scattering (SERS) substrate to detect hazardous pollutants, including rhodamine 6G (R6G) and pesticide residues like malathion (MAL). For R6G probe, the SERS substrate exhibited a good enhancement factor (EF) of 1.68 × 10⁷ and a low detection limit (LOD) of 2.43 × 10⁻¹³ M. Moreover, this SERS substrate owned a good stability for the SERS intensity which was reduced only by 12.4 % after aging time for 21 days and the relative standard deviation (RSD) values were lower than 15 %, revealing an excellent uniformity and reproducibility. For MAL detection, this SERS substrate exhibited a low LOD of 1.72 × 10⁻¹⁰ M. This SERS substrate shows great potential for detecting and monitoring hazardous pollutants and pesticide residues.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"162 ","pages":"Article 116935"},"PeriodicalIF":3.8,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}