Journal of Photochemistry and Photobiology A-chemistry最新文献_第5页

Synthesis and enhanced photoluminescence of Eu3+/Sm3+ co-doped CaLa4Ti4O15 red-emitting phosphor for white light-emitting diodes 白光二极管用Eu3+/Sm3+共掺CaLa4Ti4O15红发荧光粉的合成及增强光致发光性能

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2026-07-01 Epub Date: 2026-01-28 DOI: 10.1016/j.jphotochem.2026.117064

Liqiao Pan, Wentao Zhang, Siwei Luo, Xu Zhong, Xinrui Niu

{"title":"Synthesis and enhanced photoluminescence of Eu3+/Sm3+ co-doped CaLa4Ti4O15 red-emitting phosphor for white light-emitting diodes","authors":"Liqiao Pan, Wentao Zhang, Siwei Luo, Xu Zhong, Xinrui Niu","doi":"10.1016/j.jphotochem.2026.117064","DOIUrl":"10.1016/j.jphotochem.2026.117064","url":null,"abstract":"<div><div>A novel perovskite-type CaLa4Ti4O15:Eu3+, Sm3+ red-emitting phosphor was synthesized via the sol-combustion method. The luminescence intensity at 622 nm of CaLa4Ti4O15:Eu3+, Sm3+ phosphor was approximately 1.79 times higher than that of CaLa4Ti4O15:Eu3+. This was attributed to the energy transfer process between Sm3+ and Eu3+ ions. Moreover, the color purity of the CaLa4Ti4O15:Eu3+, Sm3+ phosphor reached 94.74%, and the quantum efficiencies were measured as 42.04% (internal) and 30.15% (external), respectively. White light-emitting diodes (w-LEDs) were fabricated by combining the CaLa4Ti4O15:Eu3+, Sm3+ phosphor with commercial blue/green phosphors on an n-UV chip (λ = 395 nm). The w-LEDs exhibited bright white light with a color rendering index of 87.5 and a correlated color temperature of 4700 K. These results indicate that the CaLa4Ti4O15:Eu3+, Sm3+ phosphor has great potential for practical application as the red component in white light-emitting diodes.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"476 ","pages":"Article 117064"},"PeriodicalIF":4.7,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Investigation of curcumin encapsulation in amino-β-cyclodextrin: Insights from spectroscopic and molecular dynamic simulation techniques 姜黄素在氨基-β-环糊精中的包封研究：来自光谱和分子动力学模拟技术的见解

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2026-07-01 Epub Date: 2026-02-10 DOI: 10.1016/j.jphotochem.2026.117109

Parichat Sutthisawatkul , Bo Albinsson , Patchreenart Saparpakorn , Nonthaphon Plotoon , Onuma Mongkhon , Thitinun Karpkird

{"title":"Investigation of curcumin encapsulation in amino-β-cyclodextrin: Insights from spectroscopic and molecular dynamic simulation techniques","authors":"Parichat Sutthisawatkul , Bo Albinsson , Patchreenart Saparpakorn , Nonthaphon Plotoon , Onuma Mongkhon , Thitinun Karpkird","doi":"10.1016/j.jphotochem.2026.117109","DOIUrl":"10.1016/j.jphotochem.2026.117109","url":null,"abstract":"<div><div>Curcumin (Cur) is a bioactive compound found in turmeric that is and widely used in pharmaceutical applications. However, it has poor water solubility and low chemical stability. In this work, amino-β-cyclodextrin (ACD) was used to form an inclusion complex with curcumin. The photophysical properties of curcumin in the ACD inclusion complex were studied at various pH values. The steady-state absorption spectrum of the Cur: ACD inclusion complex showed a blue shift of the absorption band at 340 nm In addition, ACD enhanced the otherwise weak fluorescence of curcumin in aqueous solutions. Time-resolved fluorescence decay analysis revealed that the excited state consisted of three components which tentatively correspond to the cis-diketo form, the excited-state intramolecular proton transfer (ESIPT) of the keto-enol tautomer and solvent reorganization of curcumin. The average fluorescence lifetime of curcumin increased in the presence of ACD. Molecular dynamic (MD) simulations showed that the amino moiety blocked the narrow rim of ACD, resulting in a difference in the orientation and non-linear extended conjugation of the curcumin molecule when bound to ACD at different pH values. Moreover, the photostability of curcumin was significantly improved upon inclusion complex formation with ACD. These results demonstrated that amino-β-cyclodextrin inclusion enhanced effectively the photophysical and photochemical properties of curcumin.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"476 ","pages":"Article 117109"},"PeriodicalIF":4.7,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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An AIE-active probe for visual detection of H2S and bioimaging application 一种用于H2S视觉检测和生物成像的aie主动探针

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2026-07-01 Epub Date: 2026-02-03 DOI: 10.1016/j.jphotochem.2026.117095

Hai-Yan Li , Ling-Li Cai , Li-Li Wang , Wei-Zhen Tang , Xun-Guang Bian , Guo-Long Gu , Yong Nian , Ying Liu , Jin Wang

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Photoelectric effect detection of oxytetracycline in water by Co-doped AgInS2 nanomaterials 共掺杂AgInS2纳米材料对水中土霉素的光电效应检测

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2026-07-01 Epub Date: 2026-01-29 DOI: 10.1016/j.jphotochem.2026.117072

Jie Chen , Lijiao Sun , Xiaoyun Pu , Xuan Ran , Kezhen Qi , Ya Yan

{"title":"Photoelectric effect detection of oxytetracycline in water by Co-doped AgInS2 nanomaterials","authors":"Jie Chen , Lijiao Sun , Xiaoyun Pu , Xuan Ran , Kezhen Qi , Ya Yan","doi":"10.1016/j.jphotochem.2026.117072","DOIUrl":"10.1016/j.jphotochem.2026.117072","url":null,"abstract":"<div><div>Cobalt (Co)-doped AgInS2 (Co-AIS) as a photoactive material for the construction of a Co-AIS-ITO (indium tin oxide, ITO) photoelectrochemical electrode is reported. Based on the inhibitory effect of oxytetracycline (OTC) on the photocurrent of Co-AIS, a photoelectrochemical detection method was established. X-ray diffraction (XRD) confirmed that Co atoms were uniformly distributed in AgInS2 (AIS) matrix. Under the optimal conditions (the concentration of Co-AIS-absolute ethanol-ethylene glycol mixture is 0.35 mg/mL while the ITO electrode is coated with 25.00 μL of that mixture, and the detection applied voltage is 0.25 V.), a good linear response relationship existed between the relative decrease in photocurrent (ΔI/I0) and the logarithm of the OTC concentration (logC) along with a low detection limit. Mechanistic analysis reveals that Co-AIS is an n-type semiconductor, and the photo-generated electrons (e−) reduce O2 to generate superoxide anions (•O2−), leading to a reduction of photocurrent. Then OTC is oxidized by •O2− and a small amount of hydroxyl radicals (•OH). Therefore, OTC residues in natural water bodies can be easily detected. This study offers new insights into the application of AIS-based materials in the field of photoelectrochemical analysis.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"476 ","pages":"Article 117072"},"PeriodicalIF":4.7,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Visible-light-driven Li/C co-doped PCN for enhanced photocatalytic hydrogen evolution 可见光驱动Li/C共掺杂PCN增强光催化析氢

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2026-07-01 Epub Date: 2026-02-04 DOI: 10.1016/j.jphotochem.2026.117086

Dongyu Wang , Xiaolu Liu , Wenjie Zheng , Jie Li , Weipeng Lai , Xiaoying Liang , Yu Bai , Chengqun Xu

{"title":"Visible-light-driven Li/C co-doped PCN for enhanced photocatalytic hydrogen evolution","authors":"Dongyu Wang , Xiaolu Liu , Wenjie Zheng , Jie Li , Weipeng Lai , Xiaoying Liang , Yu Bai , Chengqun Xu","doi":"10.1016/j.jphotochem.2026.117086","DOIUrl":"10.1016/j.jphotochem.2026.117086","url":null,"abstract":"<div><div>The Li and C co-doped polymeric carbon nitride (PCN) are successfully prepared using a facile calcination process. The construction of C<img>C and Li<img>N bonds, coupled with improved optical absorption, enhanced π bond delocalization and effective electron-hole pair separation, significantly advances the photocatalytic activity under visible light irradiation. The improved crystallinity, hydrophilicity and increased SBET are also beneficial for enhancing photocatalytic activity. As a result, the apparent quantum yield (AQY) of the optimal samples for H2 evolution achieves values of 19.6% at 450 nm, 13.0% at 500 nm, and 4.0% at 550 nm, far surpassing the majority of previously reported PCN-based photocatalysts. Additionally, NaCit and KCit are also incorporated into the PCN structure via similar synthetic routes, underscoring the versatility of the present approach. Our findings shed light on an effective co-doping design strategy to foster synergistic interactions in the development of high-efficiency light-harvesting semiconductors.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"476 ","pages":"Article 117086"},"PeriodicalIF":4.7,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Effect of electric field on the luminescent properties of thermally activated delayed fluorescence emitters 电场对热激活延迟荧光发射体发光性能的影响

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2026-07-01 Epub Date: 2026-02-03 DOI: 10.1016/j.jphotochem.2026.117093

Lili Lin, Ran Liu, Xiaofei Wang, Chuan-Kui Wang

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Double-layered TiO2 microtube prepared via a bio-template for efficient photocatalytic H2 production 利用生物模板制备双层TiO2微管用于高效光催化制氢

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2026-07-01 Epub Date: 2026-02-03 DOI: 10.1016/j.jphotochem.2026.117090

Xiaojuan Guo , Wenze Luo , Xueyu Guo , Cheng Cheng , Jinwen Shi , Yu Chen , Dengwei Jing , Lijing Ma

{"title":"Double-layered TiO2 microtube prepared via a bio-template for efficient photocatalytic H2 production","authors":"Xiaojuan Guo , Wenze Luo , Xueyu Guo , Cheng Cheng , Jinwen Shi , Yu Chen , Dengwei Jing , Lijing Ma","doi":"10.1016/j.jphotochem.2026.117090","DOIUrl":"10.1016/j.jphotochem.2026.117090","url":null,"abstract":"<div><div>Rational engineering of photocatalyst morphology represents a pivotal strategy for enhancing photocatalytic performance. Herein, we report the fabrication of TiO2 microtubes featuring a unique double-layered structure via a facile, bio-templated synthesis utilizing Platanus fruit hairs. This biomimetic approach yields the TiO2 microtubes with a surface area 2.5 times larger than that of TiO2 particles prepared in the absence of the template. The intricate double-layered microtubular architecture is instrumental in promoting the multiple scattering and reflection of incident light, thereby amplifying light harvesting and the subsequent photoexcitation process. Concurrently, the substantially increased surface area furnishes an abundance of reactive sites for surface redox reactions. Furthermore, the bio-templated synthesis induces the formation of abundant oxygen vacancies within the TiO2 lattice. These defects serve a dual function: they not only extend the optical absorption into the visible region but also act as shallow electron traps that effectively suppress the recombination of photogenerated charge carriers. As a synergistic consequence of these advantageous structural and electronic features, the as-prepared TiO2 microtubes demonstrate exceptional photocatalytic activity, achieving a remarkable H₂-production rate of 7.11 mmol g−1 h−1, which is 3.8-fold enhancement compared to the benchmark TiO2 particles.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"476 ","pages":"Article 117090"},"PeriodicalIF":4.7,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Preparation and optical sensing of Yb2WO6: Er3+ phosphor Yb2WO6: Er3+荧光粉的制备及光学传感

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2026-07-01 Epub Date: 2026-02-03 DOI: 10.1016/j.jphotochem.2026.117097

Keyu Guo , Sijing Li , Jingyi Wang , Tianmiao Sun , Rangrang Fan , Zhen Wu , Changchun Ding , Tong Liu , Lichun Shi , Junshan Hu

{"title":"Preparation and optical sensing of Yb2WO6: Er3+ phosphor","authors":"Keyu Guo , Sijing Li , Jingyi Wang , Tianmiao Sun , Rangrang Fan , Zhen Wu , Changchun Ding , Tong Liu , Lichun Shi , Junshan Hu","doi":"10.1016/j.jphotochem.2026.117097","DOIUrl":"10.1016/j.jphotochem.2026.117097","url":null,"abstract":"<div><div>The Er3+-doped Yb2WO6 phosphor was successfully synthesized via the high-temperature solid-state reaction method. Under excitation by 980 nm near-infrared laser, this material exhibits prominent upconversion luminescence, characterized by intense green emission centered at 544 nm and strong red emission at 657 nm. The optimal doping concentration of Er3+ ions was found to be 0.03, at which the material achieves the highest luminescence efficiency. Spectroscopic investigations, including upconversion luminescence, excitation, and emission spectra, indicate that the upconversion process follows the energy transfer mechanism: Yb3+ (2F5/2) + Er3+ (4I13/2) → Yb3+ (2F7/2) + Er3+ (4F9/2). In addition to its excellent luminescent properties, the Yb2WO6: 0.04Er3+ phosphor also demonstrates stable optical thermo-sensitivity across a broad temperature range from 298 to 598 K. At room temperature (298 K) and under non-thermally coupled (I544/I657) conditions, the phosphor achieves a peak relative sensitivity of 0.88% K−1.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"476 ","pages":"Article 117097"},"PeriodicalIF":4.7,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

BiOI/bi-0.002@GDY: A Photocatalyst harnessing synergistic Plasmonic and oxygen-vacancy effects for efficient antibiotic degradation BiOI/bi-0.002@GDY：一种利用协同等离子体和氧空位效应的光催化剂，用于有效降解抗生素

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2026-07-01 Epub Date: 2026-01-26 DOI: 10.1016/j.jphotochem.2026.117069

Jinglei Yu , Zhao Liu , Mengyuan Yu , Ziqi Pei , Yong Jin , Guixiang Teng , Jie He , Chun Zhang

{"title":"BiOI/bi-0.002@GDY: A Photocatalyst harnessing synergistic Plasmonic and oxygen-vacancy effects for efficient antibiotic degradation","authors":"Jinglei Yu , Zhao Liu , Mengyuan Yu , Ziqi Pei , Yong Jin , Guixiang Teng , Jie He , Chun Zhang","doi":"10.1016/j.jphotochem.2026.117069","DOIUrl":"10.1016/j.jphotochem.2026.117069","url":null,"abstract":"<div><div>In response to the environmental risks posed by antibiotic contamination, especially tetracycline (TC), a novel BiOI/Bi-0.002@GDY heterojunction was successfully constructed via a combined hydrothermal and in-situ growth strategy. In this system, BiOI serves as the primary light-absorbing component, metallic bismuth nanoparticles enhance visible-light harvesting through surface plasmon resonance (SPR), while graphdiyne (GDY) acts as an electron transfer medium and structural modulator. Under simulated sunlight, the optimized composite exhibits a photocatalytic degradation rate for TC that is 4 times and 2 times higher than those of pure BiOI and BiOI/Bi-0.002 samples, respectively, along with excellent cycling stability. The remarkable performance enhancement is attributed to the synergistic effect between the heterojunction and the GDY-induced oxygen vacancies (Ov), which effectively facilitates the separation and suppresses the recombination of photogenerated electron-hole pairs, as confirmed by EPR and XPS analyses. Meanwhile, the increased specific surface area (33.04 m2g−1) provides more active sites. The degradation pathway of TC and the evolution of ecological risks were elucidated through response surface methodology-optimized conditions, intermediate analysis, and toxicity assessment. Furthermore, photoelectrochemical measurements and density functional theory (DFT) calculations systematically revealed the charge transfer mechanism. This study provides a novel strategy for designing high-performance bismuth-based photocatalysts for antibiotic wastewater treatment.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"476 ","pages":"Article 117069"},"PeriodicalIF":4.7,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Serendipitous discovery of nitrogen bridgehead fused pyridines: photophysical properties and live-cell imaging potential 偶然发现氮桥头堡融合吡啶：光物理性质和活细胞成像潜力

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2026-07-01 Epub Date: 2026-01-26 DOI: 10.1016/j.jphotochem.2026.117068

Hana Kokot , Aljoša Bolje , Jakob Kljun , Andraž Bevk , Natalija Trunkelj , Lucija Peterlin Mašič , Janez Mravljak , Stane Pajk

{"title":"Serendipitous discovery of nitrogen bridgehead fused pyridines: photophysical properties and live-cell imaging potential","authors":"Hana Kokot , Aljoša Bolje , Jakob Kljun , Andraž Bevk , Natalija Trunkelj , Lucija Peterlin Mašič , Janez Mravljak , Stane Pajk","doi":"10.1016/j.jphotochem.2026.117068","DOIUrl":"10.1016/j.jphotochem.2026.117068","url":null,"abstract":"<div><div>A novel synthetic route to fluorescent nitrogen bridgehead fused pyridines (NBFPs) was discovered serendipitously during attempts to synthesize a thiazole derivative via a Hantzsch-type thiazole reaction from 2-cyanoethanethioamide and chloroacetone. A mechanism was proposed to rationalize the formation of NBFPs, which guided the subsequent expansion of the reaction scope and optimization of reaction conditions. The scope of the reaction was extended to include arylacetonitriles and esters of 2-(heteroaryl)acetic acids bearing an ortho-positioned pyridine-type nitrogen as a starting material. The structures of selected compounds were confirmed by single-crystal X-ray diffraction. All synthesized NBFPs exhibited pH-sensitive fluorescence and Stokes shifts exceeding 100 nm in several cases. Two compounds, methylthiazole derivative 1 and quinoline derivative 8, displayed pH-dependent emission suitable for lysosomal labelling. However, live-cell microscopy revealed limited colocalization with lysosomal probe Lysotracker Red, suggesting that these probes may localize to other acidic environments as well. Both compounds showed pronounced spectral responsiveness and fluorescence lifetime variations, indicating potential for use as environment-sensitive intracellular sensors. The methyl thiazole derivative 1 exhibited particularly favourable properties, including high photostability, low background fluorescence, minimal cytotoxicity and polarity sensitivity. These findings position NBFPs as a promising class of fluorophores for live-cell imaging and intracellular sensing applications, and warrant further investigation into their structure–function relationships and environmental responsiveness.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"476 ","pages":"Article 117068"},"PeriodicalIF":4.7,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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