Journal of Photochemistry and Photobiology A-chemistry最新文献

{"title":"GO and CNT template impact on the WO3/Bi2S3 photocatalytic activity for pharmaceutical active compounds removal","authors":"Alexandru Enesca","doi":"10.1016/j.jphotochem.2025.116387","DOIUrl":"10.1016/j.jphotochem.2025.116387","url":null,"abstract":"<div><div>A combined sol–gel and doctor blade techniques were used to obtain two types of composites. Graphene oxide (GO) and carbon nanotubes (CNTs) were used as template in the sol–gel procedure which include two steps: WO₃ and Bi₂S₃ development. The composites crystallinity and morphology were investigated indicating the formation of monoclinic WO₃ and orthorhombic Bi₂S₃. The GO template samples exhibit porous sponge-like morphology with 285 m²/g S_BET, while the CNTs template samples have a granular morphology with 294 m²/g S_BET. The elemental analysis indicate that the composite components are evenly distributed through the sample. Both GO and CNTs based samples have a predominant polar component of the surface energy which make them suitable candidate for applications in aqueous environments. The photocatalytic removal efficiency was tested in the presence penicillin G and amoxicillin (150 ppm) under UV and Vis irradiation. The highest efficiencies correspond to GO/WO₃/Bi₂S₃ which was able to remove 57.43 % PEN-G and 63.94 % AMO. The photocatalytic mechanism was investigated and described in details.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116387"},"PeriodicalIF":4.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sought gold, found a diamond: Outstanding photocatalytic performance of porpholactones","authors":"Alina D. Oparina ,&nbsp;Ekaterina S. Shremzer ,&nbsp;Daria A. Polivanovskaia ,&nbsp;Kirill P. Birin ,&nbsp;Aslan Yu. Tsivadze","doi":"10.1016/j.jphotochem.2025.116389","DOIUrl":"10.1016/j.jphotochem.2025.116389","url":null,"abstract":"<div><div>Expansion of the aromatic system is one of the key tools for controlling of the photocatalytic activity of porphyrin sensitizers. In the present work a conventional approach towards panchromatic pyrazine-fused porphyrin dimers by aerobic oxidation 2,3-diaminoporphyrins was revealed. The photoactivity of a set of such π-expanded porphyrins in oxidation of organic sulfides was investigated. The formation of a porpholactone by-product in the synthesis of diporphyrins with hindered <em>meso</em>-substituents was observed, which unexpectedly showed outstanding photocatalytic activity. Moreover, the preparation of the In(III) porpholactone complex allowed further efficiency improvement due to heavy metal effect and made it possible to exceptional turnover numbers (TON) of the photocatalyst above 830 000. The fact made the In(III) porpholactone the most effective photocatalyst for the sulfoxidation among described analogues.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116389"},"PeriodicalIF":4.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686280","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}

{"title":"Effect of N-quaternization on crystal and electronic structures of E-pyridylvinyl benzothiazoles – Photophysical and electrochemical properties, and cytotoxicity studies","authors":"Shyamvarnan Baskar ,&nbsp;Rashmi Yadav ,&nbsp;Geetha Shanmugam ,&nbsp;Koustav Sarkar ,&nbsp;Animesh Samanta ,&nbsp;Goutam Kumar Kole","doi":"10.1016/j.jphotochem.2025.116392","DOIUrl":"10.1016/j.jphotochem.2025.116392","url":null,"abstract":"<div><div>The syntheses and structural characterization by single-crystal X-ray diffraction and various spectroscopic methods of benzothiazole-derived pyridyl-based fluorophores, namely, <em>E</em>-3-pyridylvinyl benzothiazole (<strong>3-PVBT</strong>), <em>E</em>-3-<em>N</em>-methylpyridinium vinyl benzothiazole (<strong>3-MPVBT</strong>), <em>E</em>-4-pyridylvinyl benzothiazole (<strong>4-PVBT</strong>), and <em>E</em>-4-<em>N</em>-methylpyridinium vinyl benzothiazole (<strong>4-MPVBT</strong>) have been presented to derive a comprehensive structure–property correlation. Notably, <strong>3-MPVBT</strong> with <em>Z’</em> = 2 belongs to a rare class of crystals. Upon <em>N</em>-quaternization, the cationic compounds exhibited red-shifted absorption and emission. Significantly larger Stokes shifts of 8700 and 8000 cm⁻¹, respectively, for <strong>3-MPVBT</strong> and <strong>4-MPVBT</strong> were observed due to intramolecular charge transfer (ICT), compared to Stokes shifts of 6100 and 7700 cm⁻¹ for their neutral analogues. The experimental results have been rationalized by DFT and TD-DFT calculations. Enhanced electrochemical reversibility was also observed in both the <em>N</em>-methylated compounds. Furthermore, the cytotoxicity of two selected fluorophores, <strong>3-MPVBT</strong> and <strong>4-MPVBT</strong>, was evaluated against breast cancer cell lines. Remarkably, <em>N-</em>quaternization is associated with multiple advantages, including red-shifted absorption and emission, larger Stokes shifts, stabilized HOMOs and LUMOs, diminished band gap, solubility in physiological pH, and advantageous redox characteristics.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116392"},"PeriodicalIF":4.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643398","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}

{"title":"Stacking machine learning models for predicting photophysical properties of iridium complexes","authors":"Ding Peng ,&nbsp;Lin Liu ,&nbsp;Bin-Bin Xie ,&nbsp;Lin Shen ,&nbsp;Xuebo Chen ,&nbsp;Wei-Hai Fang","doi":"10.1016/j.jphotochem.2025.116374","DOIUrl":"10.1016/j.jphotochem.2025.116374","url":null,"abstract":"<div><div>Iridium complexes have played a key role in organic emitting diodes (OLEDs) devices as emitter for its high efficiency, appropriate solubility, and availability for emission color tuning. Although several progress has been made by using machine learning (ML) in designing new materials for OLEDs, there is still much room for enhancing the capability, transferability, and usability of machine learning. In the present work, we construct stacking ML models for predicting emission properties of iridium complexes, and multi-task for absorption wavelength prediction. Compared with the existing ML models, we propose an exhaustive feature generation process for iridium complexes, in which the original features of ligands of each complex are combined together according to the order of electronic structure properties. Then we build a series of meta learners in order to improve the accuracy in the emission task and to transfer ML models for predicting other photophysical properties such as the absorption wavelength. The influence of different feature selection methods and different machine learning algorithms on the performance of ML prediction is discussed in detail. We suggest concatenating the Morgan fingerprints of ligands according to a sorted order of electronic structure properties of isolated ligands as a simple and robust way to generate the input feature of complexes. The electronic structure calculations on isolated ligands can be replaced by ML, which further improves computational efficiency of the whole procedure. Promotion from base to meta learners and the advantage of gradient boosting algorithms can be observed in most tasks.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116374"},"PeriodicalIF":4.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685780","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}

{"title":"Design, synthesis and photophysical properties of novel 2,4-disubstituted quinazolines","authors":"Tatyana N. Moshkina ,&nbsp;Maria A. Ivan’kina ,&nbsp;Ekaterina S. Starnovskaya ,&nbsp;Denis A. Gazizov ,&nbsp;Pavel A. Slepukhin ,&nbsp;Emiliya V. Nosova","doi":"10.1016/j.jphotochem.2025.116390","DOIUrl":"10.1016/j.jphotochem.2025.116390","url":null,"abstract":"<div><div>A series of 2,4-diarylquinazolines bearing a 4-(trifluoromethyl)phenyl, 4-cyanophenyl, or 4-(formyl)phenyl group at position 4 and an electron-donating substituent at position 2 were synthesized via Pd-catalyzed cross-coupling of 4-bromo derivatives with arylboronic acids. A counterpart with a cyano group directly attached to the quinazoline core was also prepared. The UV–Vis absorption and photoluminescence properties of dilute solutions of these compounds were investigated, revealing that 2-(3,4-dimethoxyphenyl)quinazolines and 2-(9-ethyl-9<em>H</em>-carbazol-3-yl)quinazolines exhibited emission in toluene with quantum yields of up to 26 %. Furthermore, 9-ethyl-9<em>H</em>-carbazol-3-yl-substituted derivatives demonstrated emission in the solid state with efficiencies up to 15 %. The absorption and emission behavior in solvents with different polarities were examined for selected fluorophores, and their solvatochromism was assessed using the Lippert-Mataga, Bakhshiev, and Ravi equations. While the absorption spectra were solvent-independent, the emission spectra were significantly dependent on solvent polarity, confirming the formation of ICT states. Electrochemical studies and DFT calculations were performed to support the experimental observations. Notably, the synthesized formyl derivatives hold promise for use in the development of materials for dye-sensitized solar cells through condensation reactions with active methylene compounds.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116390"},"PeriodicalIF":4.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685777","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}

{"title":"Au-modified In2O3 nanoparticles for photocatalytic degradation of diverse antibiotics","authors":"Yanyan Dong ,&nbsp;Yirong Hu ,&nbsp;Jinghua Chen","doi":"10.1016/j.jphotochem.2025.116366","DOIUrl":"10.1016/j.jphotochem.2025.116366","url":null,"abstract":"<div><div>The co-existence of diverse antibiotics in wastewater systems necessitates the development of multifunctional catalysts for simultaneous pollutant remediation. While indium oxide (In₂O₃) presents advantages as a semiconductor photocatalyst through its high electrical conductivity, low resistivity, and inherent oxygen vacancies, practical applications in broad-spectrum pollutant degradation remain constrained by rapid charge carrier recombination and limited visible-light utilization efficiency. To address these challenges, we developed plasmonic Au nanoparticle-decorated In₂O₃ composites (Au_NPs/In₂O₃) via a controlled in-situ reduction strategy. Systematic characterization revealed that the localized surface plasmon resonance (LSPR) effect of Au nanoparticles synergistically enhanced UV–vis absorption characteristics while effectively suppressing photogenerated electron-hole recombination, as evidenced by photoelectrochemical analyses including transient photocurrent response and electrochemical impedance spectroscopy. The optimized Au_NPs/In₂O₃ hybrid demonstrated exceptional photocatalytic performance, achieving 99.0 % degradation efficiency for both ofloxacin and tetracycline antibiotics under visible-light irradiation, along with remarkable cycling stability (&gt;90 % efficiency retention after three cycles) and practical applicability across varied water matrices. Mechanistic investigations through radical trapping experiments identified the predominant roles of hole (h⁺) and superoxide radical (·O₂⁻) species in the multi-pathway degradation processes. This study not only provides an effective strategy for engineering plasmon-enhanced In₂O₃ photocatalysts but also establishes a methodological framework for developing multifunctional catalytic systems for environmental remediation.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116366"},"PeriodicalIF":4.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685779","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}

{"title":"Eco-friendly one-step production of a highly sensitive fluorescent sensor for iron (III) detection in aqueous solutions: Experimental and DFT insights","authors":"Elsayed Elbayoumy ,&nbsp;Mohamed Shaker ,&nbsp;Mostafa Gaafar ,&nbsp;E.A. Moawed ,&nbsp;Mohamed M. Aboelnga","doi":"10.1016/j.jphotochem.2025.116391","DOIUrl":"10.1016/j.jphotochem.2025.116391","url":null,"abstract":"<div><div>While ferric (Fe³⁺) ions are essential nutrients for biological systems, excessive concentrations can lead to toxic effects. Therefore, it is crucial to selectively detect Fe³⁺ ions in industrial effluents to regulate their levels and support environmental protection efforts. This work presents the development of 2-phthalimidobenzoic acid (PBA) as a novel fluorescent sensor, which exhibits high sensitivity and selectivity for detecting Fe³⁺ ions in aqueous solutions. PBA was synthesized through a straightforward, environmentally friendly process without using any organic solvent or catalyst via fusion of phthalic anhydride and anthranilic acid at 135 °C for only 10 min. Structure characterization was performed using both FTIR and NMR spectroscopy, while the crystal structure and thermal stability were assessed via XRD and TGA techniques. The optical properties of PBA were investigated using UV–vis and fluorescence spectroscopy at various pH levels. When excited at a wavelength of 336.6 nm, PBA exhibited a maximum emission peak at 405.4 nm. Using the Stern-Volmer equation, a strong correlation was observed between the concentration of Fe³⁺ ions and the fluorescence intensity of PBA, accompanied by a high quenching rate. The fluorescent sensor system demonstrated remarkable selectivity for Fe³⁺ ions over a wide range of tested metal ions and anions, with a significant reduction in fluorescence intensity in the presence of Fe³⁺ ions. UV–vis spectra before and after the addition of Fe³⁺ ions to PBA sensor exhibits a dynamic fluorescence quenching mechanism is occurring between PBA and Fe³⁺ ions. Additionally, DFT calculations provided atomistic insights into the sensing mechanism between Fe³⁺ and PBA. To further evaluate the practical applicability of the PBA sensor, five different real water samples were tested, yielding favorable results for Fe³⁺ detection.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116391"},"PeriodicalIF":4.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643399","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}

{"title":"Recycling of polyethylene terephthalate waste bottles and zinc-carbon used batteries for preparation a MOF-based catalyst: Application in photodegradation of organophosphorus pesticides","authors":"Mojtaba Yeganeh ,&nbsp;Abdolhamid Hatefi-Mehrjardi ,&nbsp;Ali Esrafili ,&nbsp;Hamid Reza Sobhi","doi":"10.1016/j.jphotochem.2025.116388","DOIUrl":"10.1016/j.jphotochem.2025.116388","url":null,"abstract":"<div><div>Without doubt, growing consumption of plastic waste and used batteries causes various environmental problems. Recycling such waste materials and converting them to valuable compounds are considered as an environmentally friendly and economically viable choice. In fact, the use of waste-originated compounds and recycling resources for the preparation of metal − organic frameworks (MOFs) seem to be beneficial to both environmental protection and sustainable economic development. In this regard, a waste-originated MOF compound (W-MOF) was successfully prepared from the zinc-carbon (Zn-C) used batteries and polyethylene terephthalate (PET) waste bottles, both of which served as the pre-precursor agents. In fact, the W-MOF preparation was accomplished by combining Zn(II) ions and terephthalic acid (H₂BDC) precursors recovered from respective Zn-C waste batteries and PET waste bottles. Following that, W-MOF compound was modified with graphene oxide (GO), and the resulting composite (GO-W-MOF) was applied as the catalyst for the photodegradation of two prominent organophosphorus pesticides, namely chlorpyrifos (CPF) and profenofos (PFF). The optimum conditions were set as follows: solution pH 5, the contaminants’ concentration of 1 mg/L, the catalyst dosage of 0.6 g/L, and Vis-irradiation time of 60 min. Additionally, the photodegradation of CPF and PFF well fitted to the first-order kinetic model. Meanwhile, the GO-W-MOF catalyst featured a superb recovery and high stability and a high level of efficiency regarding the treatment of real samples was accomplished as well. As far as the economic and environmental advantages as well as the obtained results are concerned, the applied GO-W-MOF composite, which was derived from the waste recycling process, acted as a suitable catalyst with regard to the photodegradation of CPF and PFF in aqueous solutions.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116388"},"PeriodicalIF":4.1,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641156","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}

{"title":"Tetracyanobutadiene- and dicyanoquinodimethane-functionalized D′-A-(π)-D-(π)-A-D′ type indacenodithiophene small-molecule chromophores: Synthesis, optoelectronic properties and photovoltaic response","authors":"Haitao Liao ,&nbsp;Xuejiao Tang ,&nbsp;Xiaoying Zhang ,&nbsp;Yixiang Zhang ,&nbsp;Xiaoying Zeng ,&nbsp;Xiujie Peng ,&nbsp;Chao Weng ,&nbsp;Ping Shen","doi":"10.1016/j.jphotochem.2025.116376","DOIUrl":"10.1016/j.jphotochem.2025.116376","url":null,"abstract":"<div><div>Tetracyanobutadiene (TCBD) and dicyanoquinodimethane (DCNQ)-functionalized π-conjugated small-molecule chromophores (SMCs) have received continuous attention in organic optoelectronic devices. Herein, four D′-A-(π)-D-(π)-A-D′ type SMCs (<strong>IDT-PCN</strong>, <strong>IDT-TCN</strong>, <strong>IDT-T-PCN</strong>, and <strong>IDT-T-QPCN</strong>) based on TCBD/DCNQ were designed and synthesized by strategically changing A and D′ groups and inserting π-bridge to investigate of their molecular structures, optical and electrochemical properties and other functional properties. These symmetrical SMCs were easily obtained through shorter reaction steps relative to unsymmetrical molecules. Results demonstrated that the end-capped D′ (benzene and thiophene) has a limited effect on molecular structures and optoelectronic properties, whereas the the insertion of π-bridge (thiophene) and change of A unit (TCBD versus DCNQ) can evidently redshift absorption spectra, reduce optical bandgaps (<em>E</em>_g^opt) and lower HOMOs. As a result, <strong>IDT-PCN</strong> and <strong>IDT-TCN</strong> exhibit similar absorption spectra and <em>E</em>_g^opt as well as HOMO/LUMOs; in contrast, for <strong>IDT-T-QPCN</strong>, the most redshifted absorption band, narrowest <em>E</em>_g^opt (1.16 eV) and highest-lying HOMO/LUMOs are obtained. Theoretical calculations indicate these D′-A-(π)-D-(π)-A-D′ molecules possess a good planar geometry along the main conjugated molecular backbone, facilitating effective π-electron delocalization and strong ICT effect from the D to A units; while the end-capped D′ and far = C(CN)₂ group are almost orthogonal with the main conjugation backbone. Moreover, the photovoltaic response of these new SMCs was evaluated by fabricating binary and ternary organic solar cells (OSCs). Results reveal that both PBDB-T:SMC and SMC:PC₇₁BM binary systems produced rather poor device efficiencies (below 1 %). Inspiringly, compared to the control PM6:Y6 binary device, the PM6:Y6:<strong>IDT-T-PCN</strong> ternary OSCs with <strong>IDT-T-PCN</strong> as the third component showed enhanced photostability and an obviously improved efficiency (17.36 %), the highest for TCBD-based active materials. On a larger picture, this finding argues the influence of the A group and π-bridge on manipulating the optoelectronic properties of TCBD/DCNQ-based D′-A-(π)-D-(π)-A-D′ chromophores and the application potential of these SMCs in constructing efficient ternary OSCs, which opens more avenues for the rational development of TCBD/DCNQ-based SMCs for efficient OSCs and other optoelectronic applications.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116376"},"PeriodicalIF":4.1,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619627","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}

{"title":"Porphyrins functionalized covalent organic frameworks for enhanced photodynamic and photothermal antibacterial","authors":"Zi Jian Cheng ,&nbsp;Han Bin Xu ,&nbsp;Hua Ying Chen ,&nbsp;Dan Li ,&nbsp;Ya Ting Gao ,&nbsp;Cheng Ye Xi ,&nbsp;Ming Jie Ye ,&nbsp;Yue He ,&nbsp;Da Wei Li ,&nbsp;Bin Bin Chen","doi":"10.1016/j.jphotochem.2025.116386","DOIUrl":"10.1016/j.jphotochem.2025.116386","url":null,"abstract":"<div><div>Porphyrins, as important organic photosensitizers, have attracted widespread attention in photodynamic and photothermal therapy. However, the poor water solubility of porphyrins causes their tendency to aggregate in living organisms, resulting in unsatisfactory photodynamic and photothermal effects. In this work, we have ingeniously designed a kind of photoactive COFs-Tph by covalent coupling hydrophobic porphyrin (Tph) on the surface of porous covalent organic frameworks (COFs) with free aldehyde groups. Under 660 nm light irradiation, the proposed COFs-Tph exhibit high ¹O₂ generation ability and photothermal conversion efficiency (50.56 %) simultaneously. Importantly, the COFs-Tph display the obviously enhanced photodynamic and photothermal performance compared to Tph, which is attributed not only to the high loading capacity of COFs on Tph, but also to covalent coupling between COFs and Tph that improves the dispersibility of Tph. Because of the excellent phototherapeutic ability, the COFs-Tph are used as the antibacterial nanoreagents to kill 100 % both Gram-negative and Gram-positive bacteria in just 5 min. This work develops a powerful strategy to construct phototherapeutic nanoreagents with enhanced photodynamic and photothermal properties and achieve efficient antibacterial purposes.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"466 ","pages":"Article 116386"},"PeriodicalIF":4.1,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601713","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}