Optical Materials最新文献

{"title":"Experimental and theoretical studies of a new NLO active organic salt of 2-amino-4-hydroxy-6-methylpyrimidine and 4-hydroxybenzoic acid","authors":"Mohd Raish ,&nbsp;Sultan ,&nbsp;Mohammad Jane Alam ,&nbsp;Musheer Ahmad ,&nbsp;S.M. Afzal ,&nbsp;Shabbir Ahmad","doi":"10.1016/j.optmat.2024.116394","DOIUrl":"10.1016/j.optmat.2024.116394","url":null,"abstract":"<div><div>The new monohydrate organic salt (AHMPHB) of 2-amino-4-hydroxy-6-methylpyrimidine (AHMP) with 4-hydroxybenzoic acid (HBA) was successfully synthesized and grown as an organic single crystal with characteristic optical quality using the slow evaporation technique (SET). The structural study of the grown crystal was performed using single-crystal XRD. The XRD results revealed that AHMPHB belongs to the triclinic system with space group P-1. Various functional groups of AHMPHB were identified using Raman and FTIR spectroscopic analyses. The optimized geometry and other theoretical results were determined by the DFT/B3LYP method at the 6–311++G(d,p) basis set. The H⋅⋅⋅H and O⋅⋅⋅H intermolecular forces are dominated in the crystal packing and these were explored using Hirshfeld surface and fingerprint plot analyses. TG and DTA studies demonstrate that AHMPHB remains stable up to 140 °C. According to UV–Vis spectral analysis, AHMPHB has exhibited high transparency in the visible region with a direct band gap of 4.10 eV. The NLO measurement of AHMPHB was done using the Z-scan method. The energy of the HOMO-LUMO gap of 4.37 eV was predicted using DFT calculations. NBO analysis was performed to represent the charge transfer between localized bonds and lone pairs. Moreover, the MEP maps, HOMO-LUMO profiles and theoretical NLO parameters of AHMPHB and its constituents are also obtained.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116394"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654191","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":"Surface enhanced Raman scattering-based sensing and ultrafast nonlinear optical properties of silver-hexagonal boron nitride nanocomposites achieved by femtosecond laser ablation","authors":"Kousik Bera ,&nbsp;Sree Satya Bharati Moram ,&nbsp;Dipanjan Banerjee ,&nbsp;Jayeeta Lahiri ,&nbsp;Venugopal Rao Soma","doi":"10.1016/j.optmat.2024.116393","DOIUrl":"10.1016/j.optmat.2024.116393","url":null,"abstract":"<div><div>This study investigated the surface-enhanced Raman spectroscopy (SERS) properties and nonlinear optical (NLO) behavior of silver nanoparticles (Ag NPs) decorated hexagonal boron nitride (hBN) nanocomposites. Although Ag NPs are known for their excellent plasmonic properties, their susceptibility to oxidation in ambient conditions significantly reduces SERS activity. To overcome this, a femtosecond laser-assisted single-step novel approach is developed for synthesizing hybrid Ag-hBN nanocomposites via ablating Ag target in a solution of exfoliated hBN nanosheets, forming uniformly embedded Ag NPs on hBN nanosheets. The morphological characteristics and elemental compositions were validated by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and energy dispersive X-ray spectroscopy (EDS). TEM analysis revealed that Ag NPs averaged 15 nm in size, while hBN nanosheets had lateral dimensions of approximately 250 nm. The SERS activity of the prepared nanocomposites was investigated using dye and explosive molecules, achieving detection sensitivities of 1 μM and 100 μM, respectively, with high reproducibility. These detection sensitivities are significant as they demonstrate the potential of the Ag-hBN nanocomposites for sensitive and reliable detection of trace amounts of analytes. Notably, the Ag-hBN nanocomposites showed enhanced SERS activity compared to pure Ag NPs, with a 2.5-fold improvement for Nile blue, 3.6-fold for methylene blue, and 2.4-fold for RDX. The current study also demonstrates that hBN prevents Ag NPs’ oxidation and preserves the SERS functionality even at elevated temperatures. Furthermore, the NLO properties of the nanocomposites were investigated using the standard Z-scan technique, revealing two-photon and three-photon absorption coefficients of 3 × 10⁻⁴ cm/GW and 6.5 × 10⁻⁵ cm³/GW², respectively. The findings highlight the potential of Ag-hBN nanocomposites to enhance SERS and NLO devices, enabling future applications in sensing and photonics.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116393"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654317","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":"Breakdown cost and recycling processes of Bentonite/TiO2 quantum dots of photo and solar degradation of Congo Red dye and industrial dyes wastes","authors":"Ali Sayqal ,&nbsp;Alia A. Alfi ,&nbsp;Nada M. Alatawi ,&nbsp;S.A. Al-Ghamdi ,&nbsp;Ibrahim S.S. Alatawi ,&nbsp;Abdulrhman M. Alsharari ,&nbsp;Hussain Alessa ,&nbsp;Nashwa M. El-Metwaly","doi":"10.1016/j.optmat.2024.116408","DOIUrl":"10.1016/j.optmat.2024.116408","url":null,"abstract":"<div><div>This research presents the preparation, characterization, and application of a novel bentonite- TiO₂ quantum dot (Bent/TQ) nanocomposite for the efficient photodegradation of Congo Red dye, a common pollutant in industrial wastewater. The composite was prepared via a co-precipitation method followed by calcination, which facilitated the uniform dispersion of TiO₂ quantum dots within the bentonite matrix. The resulting material exhibited a high specific surface area of 205.45 m²/g and an optimized band gap of 3.15 eV, making it suitable for visible light photocatalysis. The photocatalytic efficiency of Bent/TQ was evaluated under both xenon lamp irradiation and natural sunlight. The composite demonstrated a significant degradation rate constant of 23.35 × 10⁻³ s⁻¹, which is comparable to that of pure TiO₂ quantum dots (28.86 × 10⁻³ s⁻¹). Mechanistic studies revealed that the primary active species responsible for the degradation were hydroxyl radicals (•OH), generated through the interaction of photogenerated electron-hole pairs with H₂O molecules and molecular oxygen. Total Organic Carbon (TOC) and Chemical Oxygen Demand (COD) analyses were employed to assess the mineralization efficiency of the composite. The Bent/TQ catalyst achieved a COD removal efficiency of 84.5 % and a TOC reduction of 76.2 % after 240 min of irradiation under natural sunlight. Reusability tests indicated that the photocatalyst retained approximately 80 % of its original efficiency after seven consecutive cycles, though a slight decline was observed due to particle agglomeration under prolonged light exposure. The economic analysis suggested that the use of Bent/TQ nanocomposites could reduce operational costs by 29.12 % compared to conventional TiO₂-based systems, making it a cost-effective solution for large-scale wastewater treatment. This work highlights the potential of Bent/TQ nanocomposites as sustainable and efficient photocatalysts for environmental remediation, with future efforts aimed at enhancing their long-term stability and expanding their applicability to a broader range of pollutants.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116408"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654269","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":"Incomplete plasmonic hybridization induced broadband band-stop filtering in metasurface","authors":"Shan Huang,&nbsp;Jingrong Zheng,&nbsp;Chuan Yu,&nbsp;Yuanfeng Zhu,&nbsp;Xingfang Luo","doi":"10.1016/j.optmat.2024.116404","DOIUrl":"10.1016/j.optmat.2024.116404","url":null,"abstract":"<div><div>Surface plasmon hybridization improves the physical properties of the plasmonic modes and opens up new possibilities for light manipulation at the nanoscale. In this paper, we investigated the broadband band-stop filtering characteristics of a metasurface composed of two metal nanocube arrays separated by a dielectric film. The filtering bandwidth of over 100 nm in the visible region was demonstrated, with a transmittance of less than 0.5 % across the whole filtering range. The incomplete plasmonic hybridization model was proposed, which accurately describes the broadband spectral response. In contrast to full hybridization, incomplete hybrid modes can contain varying percentage admixtures of the primitive modes, allowing incident light in a broadband range to meet the momentum-matching condition. The analysis of the dependence of the reflection, absorption, and transmission spectra on the structural parameters further validates the results. The proposed broadband filter was experimentally validated and found to be in good agreement with numerical results. Our in-depth analysis of the hybrid coupling mechanism opens up a new avenue for designing broadband optical devices.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116404"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654202","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":"Wide-range emission of Er3+/Yb3+ co-doped lanthanum niobates: A study of temperature and excitation-dependent luminescence aiming at applications in Biophotonics","authors":"Mateus Grecco Manfré ,&nbsp;Fernanda Hediger Borges ,&nbsp;Luiz Fernando dos Santos ,&nbsp;Vítor dos Santos de Souza ,&nbsp;Matheus Castelani ,&nbsp;Leonardo V. S. França ,&nbsp;Oswaldo Baffa ,&nbsp;Rogéria Rocha Gonçalves","doi":"10.1016/j.optmat.2024.116383","DOIUrl":"10.1016/j.optmat.2024.116383","url":null,"abstract":"<div><div>We have synthesized Er³⁺,Yb³⁺ co-doped lanthanum niobate samples by a sol–gel route and investigated their luminescent properties under different excitation sources aiming at applications in Biophotonics. The samples were crystalline and composed primarily of orthorhombic La₃NbO₇ with secondary formation of monoclinic LaNbO₄. We verified NIR-to-visible upconversion with the naked eye under excitation at 980 and 1550 nm; emission in the green and red regions prevailed, respectively. X-ray excitation revealed prevalent emission in the blue region, attributed to the luminescence of NbO₄³⁻ groups in the lattice, as well as Er³⁺ emissions in the visible range. All the samples presented high relative thermal sensitivity (above 1.32 % K⁻¹) and repeatability above 97 % between 243 and 293 K. Based on the investigated luminescent properties, the samples prepared herein are versatile materials with a wide range of potential applications as scintillators, optical markers, energy converters for photodynamic therapy, and nanothermometers.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116383"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654313","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":"Solid-state fluorophores with synergic excited state intramolecular proton transfer (ESIPT) and aggregation-induced emission (AIE) properties as effective non-doped emitters for electroluminescent devices","authors":"Sujinda Petdee ,&nbsp;Suangsiri Arunlimsawat ,&nbsp;Teerapat Itsoponpan ,&nbsp;Kasin Rueantong ,&nbsp;Atthapon Saenubol ,&nbsp;Pattarapapa Janthakit ,&nbsp;Phattananawee Nalaoh ,&nbsp;Taweesak Sudyoadsuk ,&nbsp;Vinich Promarak","doi":"10.1016/j.optmat.2024.116413","DOIUrl":"10.1016/j.optmat.2024.116413","url":null,"abstract":"<div><div>Here, we present the concept of combining excited-state intramolecular proton transfer (ESIPT) and aggregation-induced emission (AIE) features into a single molecule as a strategy to generate high-performance ESIPT-based non-doped organic light-emitting diodes (OLEDs). Two ESIPT-AIE-type green fluorophores, <strong>TBzHPI</strong> and <strong>TBzHI</strong>, are meticulously designed and synthesized by incorporating a conventional AIE moiety of triphenylethylene (TPE) with specific ESIPT cores of 2-(benzo[d]thiazol-2-yl)-6-(1-phenyl-1H-phenanthro [9,10-d]imidazole-2-yl)phenol (BzHPI) and 2-(benzo[d]thiazol-2-yl)-6-(1,4,5-triphenyl-1H-imidazole-2-yl)phenol (BzHI), respectively. The ESIPT and AIE properties are thoroughly validated through both theoretical calculations and experimental investigations. Both <strong>TBzHPI</strong> and <strong>TBzHI</strong> exhibit large Stokes shifted emissions (135–146 nm) and strong green emission of the pure keto form in the solid state owing to the collective effects of ESIPT and AIE properties in molecules. Their uses as non-doped emitters in OLEDs have been accomplished, with all devices showing strong keto-form emissions and low turn-on voltages of 2.8 V. Particularly, <strong>TBzHPI</strong>-based device demonstrates a remarkably high luminance of 54,825 cd m², a current efficiency (CE) of 18.42 cd A⁻¹, and an external quantum efficiency (EQE) of 5.76 %, with only a slight decrease in efficiency. This finding is significant as it represents the highest EQE reported so far for ESIPT molecules used as non-doped emitters in fluorescent OLEDs.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116413"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654274","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":"Optical and mechanical properties of waterborne nano-CaCO3/polyethylene coatings: Experimental, DFT, and wave optics investigation","authors":"Zhang Zhexuan ,&nbsp;Zhou Yang ,&nbsp;Li Runfeng ,&nbsp;Zhan Huasheng ,&nbsp;Zihua Zhang ,&nbsp;Yuanhao Zhao ,&nbsp;Li Shibo ,&nbsp;Huang Zhenying","doi":"10.1016/j.optmat.2024.116377","DOIUrl":"10.1016/j.optmat.2024.116377","url":null,"abstract":"<div><div>This study analyzed the impact of nano-CaCO₃ content on the optical and mechanical properties of waterborne nano-CaCO₃/polyethylene coatings. The results showed a marginal reduction in lightness (<em>L</em>∗) and contrast ratio alongside incremental nano-CaCO₃ content, but substantial increases in scrubbing resistance and stain resistance were observed. Nano-CaCO₃ enhances shear resistance through intermolecular interactions. It revealed the interface interaction energy of the nano-CaCO₃/polyethylene model at 11.90 kJ/mol. Measured and calculated optical properties confirmed a decrease in <em>L</em>∗ and contrast ratio when TiO₂ was replaced by nano-CaCO₃. Optical properties were predicted using DFT, and response and impedance matching with varying nano-CaCO₃ content were assessed using the wave optics model.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116377"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654280","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":"Influence of Ta2O5 nanoparticles on the polyvinyl alcohol films’ structure and optical parameters for UV shielding applications","authors":"T.S. Soliman","doi":"10.1016/j.optmat.2024.116426","DOIUrl":"10.1016/j.optmat.2024.116426","url":null,"abstract":"<div><div>Our current objective is to develop a pioneering system utilizing polyvinyl alcohol (PVA) as a host matrix for the Ta₂O₅ nanoparticles for shielding applications. The PVA-Ta₂O₅ films were obtained via casting and characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR), and a polarized optical microscope. XRD and FTIR analyses showed the incorporation of Ta₂O₅ nanoparticles in the PVA matrix and the change in the polymeric film structure. The optical bandgap energy of the PVA was affected by the inclusion of Ta₂O₅ nanoparticles and was investigated through Tauc's relation using the absorption data recorded from the ultraviolet–visible spectrophotometer. The direct/indirect bandgaps decreased from 5.37/4.51 eV to 3.52/2.24 eV for PVA undoped and PVA after doping with 5.7 % Ta₂O₅, respectively. Moreover, the refractive index of the polymer film increased from 1.9148 for pure PVA to 2.3347 after 5 % Ta₂O₅ was added to the PVA. Adding Ta₂O₅ nanoparticles to the PVA film improves PVA's optical parameters, qualifying it for use in many optical applications.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116426"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654281","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":"Photoluminiscence and absorption of emission by phonons of indirect transitions in layered GaS single crystals","authors":"E. Cristea ,&nbsp;A.V. Tiron ,&nbsp;E.V. Rusu ,&nbsp;A.V. Dorogan ,&nbsp;V.V. Zalamai","doi":"10.1016/j.optmat.2024.116395","DOIUrl":"10.1016/j.optmat.2024.116395","url":null,"abstract":"<div><div>Absorption in E||b and E⊥c polarizations and photoluminescence at the absorption edge were studied at temperatures range 10–300 K. It was found that the smallest indirect transitions take place from the minimum of conduction band <strong><em>C</em></strong>_{<strong><em>1</em></strong>} (point <strong><em>M</em></strong>) to the maximum of valence band <strong><em>V</em></strong>_{<strong><em>1</em></strong>} in the Brillouin zone center (point <strong><em>Γ</em></strong> or nearby). A distance between these extrema is 2.4484 eV at 10 K. In addition, the magnitude of indirect transitions from the second band <strong><em>C</em></strong>_{<strong><em>2</em></strong>} (point <strong><em>M</em></strong>) to valence band <strong><em>V</em></strong>_{<strong><em>1</em></strong>} (Brillouin zone center) is 2.4912 eV at 10 K. The splitting of <strong><em>C</em></strong>_{<strong><em>1</em></strong>}<strong><em>–C</em></strong>_{<strong><em>2</em></strong>} bands in <strong><em>M</em></strong> point of the Brillouin zone is equal to ∼43 meV. The indirect transitions from third conduction band <strong><em>C</em></strong>_{<strong><em>3</em></strong>} (point <strong><em>K</em></strong>) to valence band <strong><em>V</em></strong>_{<strong><em>1</em></strong>} in the nearby of <strong><em>Γ</em></strong> point are equal to 2.7683 eV at 10 K. The splitting of conduction bands <strong><em>C</em></strong>_{<strong><em>2</em></strong>} (point <strong><em>M</em></strong>) and <strong><em>C</em></strong>_{<strong><em>3</em></strong>} (point <strong><em>K</em></strong>) is higher than one for the splitting <strong><em>C</em></strong>_{<strong><em>1</em></strong>}<strong><em>–C</em></strong>_{<strong><em>2</em></strong>}. It was observed bands associated with self-absorption of photoluminescence emission by phonons with symmetries <strong><em>E</em></strong>_{<strong><em>1g</em></strong>}^{<strong><em>1</em></strong>}<strong><em>+A</em></strong>_{<strong><em>1g</em></strong>}^{<strong><em>2</em></strong>}, <strong><em>A</em></strong>_{<strong><em>1g</em></strong>}^{<strong><em>2</em></strong>}<strong><em>+A</em></strong>_{<strong><em>1g</em></strong>}^{<strong><em>1</em></strong>} and <strong><em>A</em></strong>_{<strong><em>1g</em></strong>}^{<strong><em>2</em></strong>}<strong><em>+E</em></strong>_{<strong><em>2g</em></strong>}^{<strong><em>2</em></strong>} involved in indirect transitions.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116395"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654315","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":"Synthesis, structure, photo- and electroluminescent properties of methyl- and alkoxy-substituted 4-methyl-N-[2-(phenyliminomethyl)phenyl]benzenesulfamides and their zinc(II) complexes","authors":"Anatolii S. Burlov ,&nbsp;Valery G. Vlasenko ,&nbsp;Yurii V. Koshchienko ,&nbsp;Bogdan V. Chaltsev ,&nbsp;Oleg P. Demidov ,&nbsp;Alexandra A. Kolodina ,&nbsp;Dmitrii A. Garnovskii ,&nbsp;Elena V. Braga ,&nbsp;Alexey N. Gusev ,&nbsp;Wolfgang Linert","doi":"10.1016/j.optmat.2024.116412","DOIUrl":"10.1016/j.optmat.2024.116412","url":null,"abstract":"<div><div>A series of novel Zn(II) bischelate complexes based on azomethines of 2-(<em>N</em>-tosylamino)benzaldehyde and aromatic amines (aniline, 4-methylaniline, 4-methoxyaniline, 2-methoxylaniline, and 4-ethoxylanine) were designed and synthesized with the aim of studying their photo- and electro-luminescent properties. The structures of the synthesized azomethines and their complexes were studied by elemental analysis, infrared (IR) and proton nuclear magnetic resonance (¹H NMR) spectroscopy. The structure of the Zn(II)-complexes was determined using X-ray diffraction analysis. In the solid state, azomethines exhibit bright luminescence in the yellow part of the spectrum with high emission efficiency and quantum yields of approximately 50 %. Zinc complexes based on them exhibit noticeable luminescence in the solid state and in solutions of methylene chloride. Compared to azomethines, the luminescence maxima of Zn(II) complexes are hypsochromically shifted, and they exhibit pronounced blue-green luminescence. The OLED devices based on zinc(II) complexes emit strong bluish-green light with a peak maximum at 478–490 nm. The device with the best parameters has a maximum luminance of 2103 cd/m², a current efficiency of 14.0 cd/A, and an overall efficiency of 4.8 %, with a turn-on voltage of 3.6 V.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116412"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654273","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}