Journal of Photochemistry and Photobiology A-chemistry最新文献_第8页

The application of TiO2@UiO-66-(OH)2 composites for the photocatalytic degradation of gaseous formaldehyde under visible light

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-02-06 DOI: 10.1016/j.jphotochem.2025.116328

Mengyao Hua, Siyi Wang, Meng Cheng, Guangming Liang, Lei Xu, Yafen Zhou

{"title":"The application of TiO2@UiO-66-(OH)2 composites for the photocatalytic degradation of gaseous formaldehyde under visible light","authors":"Mengyao Hua, Siyi Wang, Meng Cheng, Guangming Liang, Lei Xu, Yafen Zhou","doi":"10.1016/j.jphotochem.2025.116328","DOIUrl":"10.1016/j.jphotochem.2025.116328","url":null,"abstract":"<div><div>Photocatalysts TiO<sub>2</sub>@UiO-66-(OH)<sub>2</sub> was successfully synthesized via an impregnation method for removal of formaldehyde under high pressure mercury lamp irradiation, and the photocatalysts were characterized by using a variety of analytical techniques. The characterized results indicated that TiO<sub>2</sub> was attached to the surface of UiO-66-(OH)<sub>2</sub>, and there was a strong electronic interaction between the elements of TiO<sub>2</sub> and UiO-66-(OH)<sub>2</sub> in the composite. The synergistic combination of high adsorption capacity of UiO-66-(OH)<sub>2</sub>, high dispersion of TiO<sub>2</sub> and efficient interfacial charge transfer between UiO-66-(OH)<sub>2</sub> and TiO<sub>2</sub> have a significant impact on the enhanced photocatalytic performance for formaldehyde removal. And the hydroxyl radicals (⋅OH) and superoxide radicals (⋅O<sub>2</sub><sup>−</sup>) also play a major role in removal of formaldehyde. The formaldehyde removal rate of 20TiO<sub>2</sub>@UO (1 g 0.15 m<sup>3</sup>) is 83.01 % within 5.5 h, if the removal time is extended to 24 h, the formaldehyde removal rate can reach 91.49 %, and the continuous photocatalytic reaction showed that the composite is a highly stable catalyst. This could provide a useful method for highly efficient formaldehyde in indoor air purification.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"464 ","pages":"Article 116328"},"PeriodicalIF":4.1,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143402610","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

A new application for simultaneous phosphorus compounds removal and antibiotics degradation over magnesium-based layered double hydroxides

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-02-06 DOI: 10.1016/j.jphotochem.2025.116329

Yanhui Zhang, Hao Zhou, Yisha Zheng, Wenlong Xiang

{"title":"A new application for simultaneous phosphorus compounds removal and antibiotics degradation over magnesium-based layered double hydroxides","authors":"Yanhui Zhang, Hao Zhou, Yisha Zheng, Wenlong Xiang","doi":"10.1016/j.jphotochem.2025.116329","DOIUrl":"10.1016/j.jphotochem.2025.116329","url":null,"abstract":"<div><div>Magnesium-based layered double hydroxides (MgM-LDHs, M = Al, Ga, In) were synthesized by one-step coprecipitation method, which is a simple and mass-production method. The catalytic performance of MgAl-LDHs, MgGa-LDHs and MgIn-LDHs in the photocatalytic degradation of antibiotics (ciprofloxacin and tetracycline hydrochloride) was systematically investigated. The results showed that the photocatalytic activities of MgAl-LDHs, MgGa-LDHs and MgIn-LDHs were comparable, but MgAl-LDHs exhibited superior degradation efficiency of antibiotics. Through control experiments, the possible mechanism of photocatalytic degradation of antibiotics by MgAl-LDHs was elucidated. Furthermore, it was observed that the adsorption of phosphorus compounds by MgAl-LDHs significantly enhances its photocatalytic activity in degrading ciprofloxacin. This finding suggests that incorporating phosphorus compounds into MgAl-LDHs can improve their efficacy in water pollution control. Overall, our work extends the application scope of MgM-LDHs (M = Al, Ga, In) and underscore the significance of active participation in water pollution control research to mitigate adverse effects on human health.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"464 ","pages":"Article 116329"},"PeriodicalIF":4.1,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143373008","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

Factors affecting photocatalytic oxygen evolution over SrTiO3

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-02-01 DOI: 10.1016/j.jphotochem.2025.116319

Suzuko Yamazaki , Haruka Munesada , Narumi Mori , Yoshihisa Sakata

{"title":"Factors affecting photocatalytic oxygen evolution over SrTiO3","authors":"Suzuko Yamazaki , Haruka Munesada , Narumi Mori , Yoshihisa Sakata","doi":"10.1016/j.jphotochem.2025.116319","DOIUrl":"10.1016/j.jphotochem.2025.116319","url":null,"abstract":"<div><div>For efficient photocatalytic water splitting, it is needed to accelerate O<sub>2</sub> evolution process which is a rate-limiting step. We studied systematically to elucidate key factors for enhancing the O<sub>2</sub> evolution of Na<sup>+</sup>-doped SrTiO<sub>3</sub>. By using a commercially available SrTiO<sub>3</sub> (STO(C)), the optimal synthetic condition was determined. As substrates for the doping, we synthesized STO by hydrothermal methods (HT) under various temperatures. All particles of HT(180°C) were near-spherical but many cubic particles were obtained for HT(200 °C). The optimal Na<sup>+</sup>-doping amount for both HT samples was 4.0 atom% whereas 2.0 atom% for STO(C). Their O<sub>2</sub> evolution rates were compared in relation to their physical properties such as the crystallite size, the specific surface area, and the chemical composition of the surface. In X-ray photoelectron spectroscopy (XPS), the ratio of lattice oxygen to adsorbed oxygen on the surface is varied depending on the substrates and the Na<sup>+</sup>-doping amounts but is obtained to be 7: 3 for Na(2.0)-STO(C), Na(4.0)-HT(180 °C), and Na(4.0)-HT(200 °C). The O<sub>2</sub> evolution rate of Na(2.0)-STO(C) is higher than that of Na(4.0)-HT(200 °C) or Na(4.0)-HT(180°C) by a factor of 1.8 or 3.2, respectively. The highest O<sub>2</sub> evolution rate observed with Na(2.0)-STO(C) is attributable to the largest crystalline size (75.6 nm). Furthermore, it is likely that more oxygen vacancy is formed on Na(2.0)-STO(C) because the binding energies of the Ti2p and O<sub>lattice</sub> peaks in XPS shifted significantly to lower energies.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"464 ","pages":"Article 116319"},"PeriodicalIF":4.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158008","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

Na5Gd(MoO4)4: Sm3+ – A red molybdate phosphor with exceptional thermal stability for plant growth lighting

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-01-31 DOI: 10.1016/j.jphotochem.2025.116307

Haochang Ye , Wei Zhang , Xuxin Cheng , Zhengfa Hu , Xia Sheng , Wei Xie , Zuyong Feng , Lanwei Qiu , Guangting Xiong

{"title":"Na5Gd(MoO4)4: Sm3+ – A red molybdate phosphor with exceptional thermal stability for plant growth lighting","authors":"Haochang Ye , Wei Zhang , Xuxin Cheng , Zhengfa Hu , Xia Sheng , Wei Xie , Zuyong Feng , Lanwei Qiu , Guangting Xiong","doi":"10.1016/j.jphotochem.2025.116307","DOIUrl":"10.1016/j.jphotochem.2025.116307","url":null,"abstract":"<div><div>Na<sub>5</sub>Gd<sub>1−x</sub>(MoO<sub>4</sub>)<sub>4</sub>:xSm<sup>3+</sup> (x = 0–0.12) phosphors were synthesized via a high-temperature solid-state technique. Comprehensive analysis was performed on the phase purity, crystal structure, luminescence behavior, and thermal stability of the phosphors. Under excitation at 405 nm, due to the <sup>4</sup>G<sub>5/2</sub>-<sup>6</sup>H<sub>i</sub> (i = 5/2, 7/2, 9/2, and 11/2) transitions of Sm<sup>3+</sup> ions, the phosphors emit relatively intense red light. Remarkably, at 150 °C, the integrated emission intensity of Na<sub>5</sub>Gd<sub>0.92</sub>(MoO<sub>4</sub>)<sub>4</sub>:0.08Sm<sup>3+</sup> attains 96 % of its value at ambient temperature, demonstrating its excellent thermal stability. A LED light source is created using a commercial 405 nm LED chip and Na<sub>5</sub>Gd<sub>0.92</sub>(MoO<sub>4</sub>)<sub>4</sub>:0.08Sm<sup>3+</sup> phosphor, emitting a vibrant red light. Its electroluminescence spectrum overlaps with the absorption peaks of plant chlorophyll <em>a</em>/<em>b</em> and the phytochrome P<sub>R</sub>/P<sub>FR</sub> spectra, indicating its potential for use in plant growth lighting applications.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"463 ","pages":"Article 116307"},"PeriodicalIF":4.1,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143142471","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

Designing small push-pull chromophores hole transport materials for perovskite solar cells (PSCs) and organic solar cells with optimum performance

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-01-31 DOI: 10.1016/j.jphotochem.2025.116315

Rchid Kacimi , Roland Hayn , Imam Makhfudz , Ahmed Azaid , Lahcen Bejjit , Mohammed Bouachrine

{"title":"Designing small push-pull chromophores hole transport materials for perovskite solar cells (PSCs) and organic solar cells with optimum performance","authors":"Rchid Kacimi , Roland Hayn , Imam Makhfudz , Ahmed Azaid , Lahcen Bejjit , Mohammed Bouachrine","doi":"10.1016/j.jphotochem.2025.116315","DOIUrl":"10.1016/j.jphotochem.2025.116315","url":null,"abstract":"<div><div>This research project focused on the modeling and analysis of novel hole-transporting materials (HTMs) using Density Functional Theory (DFT) and Time-Dependent (TD-DFT). The study included the VNMR reference compound and newly proposed chromophores (VNM1–VNM5), designed with triarylamine cores and thiophene-linked end-capped acceptors. The investigation aimed to evaluate their optoelectronic, nonlinear optical (NLO), photovoltaic, and optical properties, with the goal of establishing these HTMs as cost-effective candidates for highly efficient perovskite solar cells (PSCs). The results indicate that these HTMs exhibit better planarity, lower Highest Occupied Molecular Orbital (HOMO) energies, and enhanced solubility, alongside a narrower energy band gap (E<sub>gap</sub>) ranging from 1.61 to 1.27 eV, compared to the reference VNMR (1.95 eV) in the gas phase. In ethanol solvent, the <em>E<sub>gap</sub></em> for VNMR is 1.85 eV, while it ranges from 1.44 to 1.10 eV for VNM1–VNM5. These properties enable efficient hole extraction and solution processing, improving hole transport from the perovskite layer and leading to higher open-circuit voltages (0.18 V–0.33 V) than the reference molecule (0.17 V). The electron and hole reorganization energies range from 0.105 eV to 0.179 eV and 0.041 eV to 0.054 eV, respectively, suggesting improved hole mobility for PSCs. Additionally, all designed HTMs showed better fill factors (0.62–0.74) compared to the reference molecule (0.61). The findings indicate that the VNM1–VNM5 molecules are promising HTMs for the production of high-performance PSCs, with potential future applications in the organic solar cells industry.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"464 ","pages":"Article 116315"},"PeriodicalIF":4.1,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158504","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

Memantine-biotin conjugate with intra tumoral cell displacing ability for cucurbit[8]uril-based switchable photosensitizer

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-01-30 DOI: 10.1016/j.jphotochem.2025.116305

Diego González-Torres , Daniel Zúñiga-Núñez , Nory Mariño-Ocampo , Martín Canals Díaz , Constanza Muñoz , Daniel Guerra Díaz , Marco Soto-Arriaza , Denis Fuentealba

{"title":"Memantine-biotin conjugate with intra tumoral cell displacing ability for cucurbit[8]uril-based switchable photosensitizer","authors":"Diego González-Torres , Daniel Zúñiga-Núñez , Nory Mariño-Ocampo , Martín Canals Díaz , Constanza Muñoz , Daniel Guerra Díaz , Marco Soto-Arriaza , Denis Fuentealba","doi":"10.1016/j.jphotochem.2025.116305","DOIUrl":"10.1016/j.jphotochem.2025.116305","url":null,"abstract":"<div><div>Switchable supramolecular photosensitizers have the potential to be more potent and decrease common side effects of photodynamic therapy such as patient’s sensitivity to ambient light. Combining this supramolecular strategy with a cancer-targeting strategy would also improve selectivity towards tumoral cells. In this work, we take advantage of the strong binding ability of cucurbit[8]uril towards cationic photosensitizer methylene blue. Encapsulation of two molecules of methylene blue inside the cavity of cucurbit[8]uril leads to strong quenching of its photoactivity, particularly the generation of singlet oxygen. In order to release selectively the photosensitizer, we synthesized a new memantine-biotin conjugate that is able to cross a liposomal bilayer as a model for a biological membrane and bind to cucurbit[8]uril releasing the photosensitizer. This phenomenon leads to a sizable boost in singlet oxygen generation. In vitro phototoxicity studies in tumoral cells show a significant difference in cell killing after the addition of the memantine-biotin displacing agent. These studies have important potential for more selective photodynamic therapy of cancer.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"463 ","pages":"Article 116305"},"PeriodicalIF":4.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143142531","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

Highly sensitive, label-free ATP detection using a small molecule–metal-based ensemble with a ratiometric absorption and fluorescence light-up approach

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-01-30 DOI: 10.1016/j.jphotochem.2025.116286

Mhejabeen Sayed

{"title":"Highly sensitive, label-free ATP detection using a small molecule–metal-based ensemble with a ratiometric absorption and fluorescence light-up approach","authors":"Mhejabeen Sayed","doi":"10.1016/j.jphotochem.2025.116286","DOIUrl":"10.1016/j.jphotochem.2025.116286","url":null,"abstract":"<div><div>Adenosine triphosphate (ATP) plays a vital role as a signalling molecule in numerous physiological functions, and imbalances in ATP levels are associated with various diseases. As a result, considerable attention has been directed toward its detection. Herein, a new small molecule–metal-based ensemble is developed for ATP detection in pure water, utilizing the inexpensive commercially available probe 1′-hydroxy-2′-acetonaphthone (1H2AN) and Cu<sup>2+</sup> ion. In this system, the Cu<sup>2+</sup> ion quenches the fluorescence of 1H2AN and induces a remarkable red shift (∼24 nm) in the absorption peak. Upon ATP addition, the 1H2AN-Cu<sup>2+</sup> ensemble exhibits ratiometric changes in absorption and fluorescence turn-on response, attributed to the strong coordination ability between ATP and Cu<sup>2+</sup> ion. This sensor system demonstrates an impressive detection limit as low as 0.36 μM. This system is simple yet highly sensitive, operating in water with dual-wavelength responses. Additionally, employing the commercial probe offers advantages over synthetic alternatives, saving both time and resources. The fluorescence off–on switching of 1H2AN with Cu<sup>2+</sup> and ATP facilitated the construction of an IMPLICATION logic gate. Importantly, the 1H2AN-Cu<sup>2+</sup> ensemble was effective in quantifying ATP in 0.15 M NaCl (mimicking physiological conditions), and in diluted human urine, demonstrating its promise for real bioanalytical applications. The current study highlights the potential of small molecule–metal-based complexes for ATP sensing and future biosensing platforms.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"464 ","pages":"Article 116286"},"PeriodicalIF":4.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158007","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

Highly sensitive fluorescent single-chain polymeric nanoparticles as chemosensors for selective Fe3+ detection

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-01-30 DOI: 10.1016/j.jphotochem.2025.116317

Deniz Kilic Ozturk , Demet Karaca Balta , Binnur Aydogan Temel , Gokhan Temel

{"title":"Highly sensitive fluorescent single-chain polymeric nanoparticles as chemosensors for selective Fe3+ detection","authors":"Deniz Kilic Ozturk , Demet Karaca Balta , Binnur Aydogan Temel , Gokhan Temel","doi":"10.1016/j.jphotochem.2025.116317","DOIUrl":"10.1016/j.jphotochem.2025.116317","url":null,"abstract":"<div><div>This work describes a straightforward technique for preparing single–chain polymeric nanoparticles by photodimerization of pendant anthracene moieties on the side chain of styrenic and acrylic based linear polymers. The resulting single–chain polymeric nanoparticles (SCNPs) are then converted into pyrene functional nanoparticles through the simple Diels–Alder post–functionalization method. Polymeric nanoparticles containing maleimide and pyrene entities were deployed as a chemosensor capable of selectively detecting Fe<sup>3+</sup> ions. Adding Fe<sup>3+</sup> ions into achieved nanoparticle medium, color change is readily visible with unaided eye. The chemosensor’s ability to sense Fe<sup>3+</sup> ions remained unaltered by the presence of other metal ions, such as Al<sup>3+</sup>, Ba<sup>2+</sup>, Ca<sup>2+</sup>, Cr<sup>3+</sup>, K<sup>+</sup>, Mg<sup>2+</sup>, Na<sup>+</sup>, NH<sub>4</sub><sup>+</sup>, Ni<sup>2+</sup>, and Sn<sup>2+</sup>. These results suggest that functional SCNP is a potential probe of Fe<sup>3+</sup> ions and it will be beneficial for future SCNP sensor design. They exhibit high sensitivity and selectivity for the detection of Fe<sup>3+</sup> in the micromolar concentration range, making it a promising tool for Fe<sup>3+</sup> detection even in the presence of other common interfering metal ions.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"464 ","pages":"Article 116317"},"PeriodicalIF":4.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143230431","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

Eosin B/amine as photoinitiator system of vinyl polymerization. A photophysical study of the dye

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-01-30 DOI: 10.1016/j.jphotochem.2025.116313

M.Paula Militello , Micaela E. Grassano , Ernesto M. Arbeloa , Sonia G. Bertolotti , Carlos M. Previtali

{"title":"Eosin B/amine as photoinitiator system of vinyl polymerization. A photophysical study of the dye","authors":"M.Paula Militello , Micaela E. Grassano , Ernesto M. Arbeloa , Sonia G. Bertolotti , Carlos M. Previtali","doi":"10.1016/j.jphotochem.2025.116313","DOIUrl":"10.1016/j.jphotochem.2025.116313","url":null,"abstract":"<div><div>The photopolymerization of acrylamide in water under visible irradiation was initiated by the system eosin B/triethanolamine in deaerated conditions. In order to understand the mechanism of photoinitiation, the photophysics of the dye in the absence and presence of the amine was studied. The absorption and fluorescence properties in ethanol–water mixtures were determined. The fluorescence quantum yields were 0.003 and 0.02 in water and ethanol, respectively. The triplet state was observed by laser flash photolysis only in the alcohol. In water, the transient signal could not be detected. The triplet quantum yield was estimated at 0.08. In the absence of the amine or in air equilibrated solutions the polymer was not formed. Since no triplet is detected by laser flash photolysis in water, the question regarding the photoinitiation mechanism arises. It is suggested that, despite the lack of transient signal with our laser photolysis system, the triplet is formed in very low yield. Since the dye is photostable under the irradiation conditions of the polymerization experiments, in the long term polymerization could take place initiated by the triplet.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"463 ","pages":"Article 116313"},"PeriodicalIF":4.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143142538","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

A new multifunctional fluorescent sensor based on benzoisoxazol derivatives for monitoring Ga3+, Mg2+ and Mn2+ ions in different solvents

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-01-30 DOI: 10.1016/j.jphotochem.2025.116292

Peng Liu , Tengfei Zhao , Bingqian Li , Menghan Hou , Xue Zhang , Xiaofeng Yang , Guangyou Zhang , Na Jiang

{"title":"A new multifunctional fluorescent sensor based on benzoisoxazol derivatives for monitoring Ga3+, Mg2+ and Mn2+ ions in different solvents","authors":"Peng Liu , Tengfei Zhao , Bingqian Li , Menghan Hou , Xue Zhang , Xiaofeng Yang , Guangyou Zhang , Na Jiang","doi":"10.1016/j.jphotochem.2025.116292","DOIUrl":"10.1016/j.jphotochem.2025.116292","url":null,"abstract":"<div><div>A new multi-target sensor, (<em>E</em>)-2-(benzo[<em>d</em>]isoxazol-3-yl)-N’-(4-(diethylamino)-2-hydroxybenzylidene)acetohydrazide (<strong>BIDA</strong>), was designed using benzoisoxazole, characterized by its simplicity and ease of synthesis. An “off-on” effect towards Ga<sup>3+</sup> ions in DMSO/H<sub>2</sub>O tris buffer and an “off-on-off” effect towards Mg<sup>2+</sup> and Mn<sup>2+</sup> ions in ACN/H<sub>2</sub>O tris buffer were exhibited by <strong>BIDA</strong>. Simultaneously, Ga<sup>3+</sup>, Mg<sup>2+</sup> and Mn<sup>2+</sup> ions were detected by <strong>BIDA</strong>, with lower detection limits of 1.91 × 10<sup>−8</sup> M, 6.30 × 10<sup>−9</sup> M and 1.95 × 10<sup>−8</sup> M. The 1:2 chelation stoichiometry of the complexes formed between the sensor and Ga<sup>3+</sup>, Mg<sup>2+</sup> and Mn<sup>2+</sup> was confirmed using analysis of Job’s plot and mass spectrometry. Different concentrations of analyte ions in environment water samples were effectively identified by the <strong>BIDA</strong> sensor, and an independent, user-friendly paper sensor was successfully developed for their detection.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"464 ","pages":"Article 116292"},"PeriodicalIF":4.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143230432","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