Journal of Photochemistry and Photobiology A-chemistry最新文献

{"title":"Enhanced photodegradation of tetracycline by novel porous g-C3N4 nanosheets under visible light irradiation","authors":"Nothando A. Phakathi,&nbsp;Shepherd M. Tichapondwa,&nbsp;Evans M.N. Chirwa","doi":"10.1016/j.jphotochem.2024.116252","DOIUrl":"10.1016/j.jphotochem.2024.116252","url":null,"abstract":"<div><div>Harnessing photocatalysis to degrade recalcitrant organic pollutants is a potent solution to addressing water pollution and alleviating energy crisis. Photocatalysts possessing intriguing characteristics such as controllable band gap, efficient visible-light absorption and high photocatalytic activity play a pivotal role in this regard. Herein, porous g-C₃N₄ nanosheets were synthesised via pyrocondensation polymerization with melamine and NH₄HCO₃ and their photocatalytic performance was investigated for degradation of tetracycline. Characterization techniques including XRD, FTIR, SEM, TEM, BET and UV–Vis spectroscopy were employed and revealed that porous g-C₃N₄ nanosheets increased light absorption capacity, provided more reactive sites and suppressed recombination of photogenerated electron-hole pairs, thus enhancing the material’s photodegradation efficiency in the degradation of tetracycline. Optimization studies showed that 83 % of tetracycline was removed after 2 h of visible light irradiation using 1 gL⁻¹ catalyst loading, an initial concentration of 10 ppm and a solution pH of 7. The catalyst showed remarkable recyclability, retaining its chemical structure and functional properties, with 68 % degradation achieved after 5 cycles. Through radical scavenging experiments, superoxide radicals (•O₂⁻) and photogenerated hole (h⁺) were identified as the primary active species responsible for TC degradation. A plausible photocatalytic mechanism was proposed from these experiments. This study provides a facile, cost effective, eco-conscious and effective approach for incorporating porous hierarchical and 2D nanosheets morphology on g-C₃N₄ to enhance its photocatalytic performance under visible light.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"462 ","pages":"Article 116252"},"PeriodicalIF":4.1,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166284","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":"Rational Preparation of Lewis basic carbon nitride for Target-Specific photocatalytic removal of cationic organic and metal pollutants","authors":"Yuren Zhao ,&nbsp;Yingxiang Sun ,&nbsp;Weixing Ming ,&nbsp;Yan Ma ,&nbsp;Ge Xu","doi":"10.1016/j.jphotochem.2025.116265","DOIUrl":"10.1016/j.jphotochem.2025.116265","url":null,"abstract":"<div><div>Selective photocatalytic removal of cationic pollutants is highly desirable in remediation of wastewater and purification of impurities. To pursue the goal, we design a novel metal-free catalyst which shows targeted photocatalytic activities against both cationic organic and metal pollutants. Based on the charge conversion of introduced electron-absorbing groups and photogenerated carriers, 1.5 wt‰ of pyridone was incorporated into the carbon nitride (CN) to prepare the Lewis basic carbon nitride (HPCN6), which exhibits different photocatalytic removal efficiencies for a range of cationic and anionic pollutants. The photodegradation rates of HPCN6 for cationic Rhodamine B and Methylene blue reached 96.36 % and 85.75 %, while the rates for anionic Ponceau 4R and Lemon yellow were only 24.34 % and 9.94 %, respectively. Especially, HPCN6 has the capacity to efficiently remove trace amounts of Mg²⁺, Al³⁺, and Ti⁴⁺ ions, with removal rates of 71.44 %, 81.36 %, and 80 %, respectively. In-depth research has demonstrated that the formation of Lewis acid-base pairs between HPCN6 and cationic pollutants is a crucial factor in achieving target-specific removal of cationic pollutants. Cationic organic and metal pollutants are captured on HPCN6 by electrostatic forces generated between photoinduced Lewis acid-base pairs, and form coordination bonds with HPCN6. Finally, the cationic organic and metal pollutants are efficiently degraded into harmless products and chelated into precipitates for removal, respectively. This work provides an effective method for enhancing targeted removal of pollutants through Lewis acid-base interactions, which contributes to multi-scene practical application of the photocatalyst.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"462 ","pages":"Article 116265"},"PeriodicalIF":4.1,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166625","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":"Two birds with one stone: A near-infrared AIE fluorescent probe for highly selective recognition of Cu2+/GSH and bioimaging","authors":"Yajie Dong ,&nbsp;Rui Qiao ,&nbsp;Qixiang Song ,&nbsp;Mengyu Chen ,&nbsp;Shizhen Wang ,&nbsp;Jingde Hu ,&nbsp;Xin Wang ,&nbsp;Wenhui Xue ,&nbsp;Yuanqian Zhang ,&nbsp;Cuibing Bai ,&nbsp;Changqing Qu ,&nbsp;Hui Miao ,&nbsp;Biao Wei","doi":"10.1016/j.jphotochem.2025.116263","DOIUrl":"10.1016/j.jphotochem.2025.116263","url":null,"abstract":"<div><div>Although notable progress has been made in the identification of Cu²⁺ and glutathione (GSH), probes that can specifically recognize them simultaneously are still rare. Herein, we designed, synthesized, and characterized a fluorescent probe <strong>QA</strong> with aggregation-induced emission characteristics, a near-infrared emission wavelength (688 nm), a large Stokes shift (Δλ = 263 nm), and specific sequential recognition of Cu²⁺ and GSH. Compared with other probes, <strong>QA</strong> exhibits a fast fluorescence “ON-OFF” response to Cu²⁺, and its low limit of detection (LOD) toward Cu²⁺ is 3.53 × 10⁻⁸ M. Moreover, it can also detect Cu²⁺ in actual water samples. Moreover, <strong>QA-</strong>Cu²⁺ shows high sensitivity to GSH with an LOD of 3.47 × 10⁻⁷ M. Notably, the toxicity of <strong>QA</strong> is so low that it can recognize Cu²⁺ and GSH in various models, including HepG-2 cells, <em>Caenorhabditis elegans</em>, and adult mice, implying that it is a favorable applicant to detect Cu²⁺ and GSH <em>in vitro</em> and <em>in vivo</em>.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"462 ","pages":"Article 116263"},"PeriodicalIF":4.1,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166614","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":"Optical nonlinearity of Tectona Grandis L.f. (teak) leaf extract under continuous wave and pulsed laser excitation","authors":"Beryl C. ,&nbsp;Amogh M.S. ,&nbsp;Cyril Benny ,&nbsp;P.R. Biju ,&nbsp;Reji Philip","doi":"10.1016/j.jphotochem.2024.116258","DOIUrl":"10.1016/j.jphotochem.2024.116258","url":null,"abstract":"<div><div>In this work, we investigate the linear and nonlinear optical properties of the natural dye obtained from <em>Tectona Grandis L.f.</em> leaves by solvent extraction. <em>Tectona Grandis L.f.</em> of the Verbenaceae family, which provides high-quality, high-value timber for various uses, is a major strategic element in the forestry economies of many tropical countries. We investigated the nonlinear optical properties at 532 nm using CW and pulsed (5 ns) lasers, employing the techniques of Z-scan and Spatial Self phase modulation (SSPM). Theoretical fits to the measured data under CW excitation give the third-order nonlinear absorption coefficient (<em>β_eff</em>) in the order of 10^-3 cm/W, and the nonlinear refractive index coefficient (n₂) in the order of 10^-6 cm²/W, respectively. The <em>β_eff</em> and n₂ values obtained for pulsed excitation are in the order of 10^-8 cm/W, and 10^-15 cm²/W, respectively. These values are comparable to those of efficient nonlinear optical (NLO) materials previously reported in literature, revealing the applicability of the teak leaf extract natural dye in optical limiting applications for protecting sensitive optical detectors and human eyes from hazardous laser radiation.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"462 ","pages":"Article 116258"},"PeriodicalIF":4.1,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166282","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":"Metal-free photocatalyst based on highly porous activated carbon obtained from agro-industrial residues. Characterization and photocatalytic evaluation","authors":"John J. Alvear-Daza ,&nbsp;Victoria Melin ,&nbsp;Karina G. Irvicelli ,&nbsp;Juan C. Murillo-Sierra ,&nbsp;Antonela Canneva ,&nbsp;Jorge A. Donadelli ,&nbsp;Cristian H. Campos ,&nbsp;Cecilia C. Torres ,&nbsp;David Contreras ,&nbsp;Alain Celzard ,&nbsp;Vanessa Fierro ,&nbsp;Luis R. Pizzio ,&nbsp;Julián A. Rengifo-Herrera","doi":"10.1016/j.jphotochem.2024.116247","DOIUrl":"10.1016/j.jphotochem.2024.116247","url":null,"abstract":"<div><div>The chemical activation of sunflower seed shells (SSS) with H₃PO₄ led to highly porous activated carbon (AC_SSS^H₃^PO₄) containing carbon-centered environmentally persistent free radicals (EPFRs), quinone functional groups, among others, and a slight graphitization degree. With high diclofenac (DFC) and ibuprofen (IBP) dark adsorption capacity (∼98 % after 1 h), AC_SSS^H₃^PO₄ was evaluated as a metal-free photocatalyst using quantitative and qualitative approaches under UV and visible light irradiation. However, due to the high adsorption of both pollutants onto the solid, monitoring photocatalytic activity was impossible. For this reason, a quantitative and qualitative strategy was developed to evaluate the existence of pollutant degradation in highly porous activated carbon. On the one hand, the qualitative approach was based on the use of ATR-FTIR spectroscopy, detecting IR bands of both molecules adsorbed on the activated carbon and evaluating their intensity reduction or the apparition of new IR bands assigned to oxidized byproducts after 5 h of light irradiation. On the other hand, the quantitative approach was based on a desorption procedure to remove DFC and IBP from the AC_SSS^H₃^PO₄ after 5 h of light irradiation and quantifying their concentrations by UHPLC. Thus, it was found that under irradiation for 5 h at λ &gt; 260 nm, AC_SSS^H₃^PO₄ showed 62 and 30 % degradation for adsorbed DFC and IBP, respectively, while under visible irradiation, pollutants degradation was 42–29 % and 20 %. AC_SSS^H₃^PO₄ thus demonstrated significant photoinduced activity, probably due to EPFRs, quinone, and graphitic functional groups.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"462 ","pages":"Article 116247"},"PeriodicalIF":4.1,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166561","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":"Non-Stoichiometric FeS2 nanoparticles as antibacterial agents with combined photothermal and photodynamic effect","authors":"Ahmed AlSarori ,&nbsp;Abdurrahman Mustafa ,&nbsp;Hasan Akyıldız ,&nbsp;Ismail Cihan Kaya ,&nbsp;Gulcihan Guzel Kaya","doi":"10.1016/j.jphotochem.2024.116260","DOIUrl":"10.1016/j.jphotochem.2024.116260","url":null,"abstract":"<div><div>In this study, non-stoichiometric FeS₂ nanoparticles were synthesized <em>via</em> hot-injection method and evaluated as dual effect antibacterial agent. Non-stoichiometric FeS₂ nanoparticles were achieved by altering the molar ratio of the precursors (i.e., Fe-source and S-source). X-ray photoelectron spectroscopy (XPS) analysis revealed that Fe/S ratio in the FeS₂ nanoparticles were 1.012:2, 0.960:2, 0.905:2, and 0.900:2 for the samples with Fe-source to S-source ratios of 1/6, 1/8, 1/10, and 1/12, respectively. In the case of Fe/S: 0.900:2, the temperature increased up to about 53 °C (photothermal conversion efficiency: 52.6 %) in addition to reactive oxygen species (ROS) generation under 808 nm near-infrared (NIR) light irradiation. Based on the <em>in vitro</em> antibacterial activity tests, non-stoichiometric FeS₂ nanoparticles exhibited promising antibacterial activity against <em>Escherichia coli</em> (98.00%) and <em>Staphylococcus aureus</em> (99.89%) due to the synergistic effects of ROS formation and hyperthermia. The non-stoichiometric FeS₂ nanoparticles can be considered as high potential antibacterial material under NIR irradiation.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"462 ","pages":"Article 116260"},"PeriodicalIF":4.1,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166593","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":"Introducing a new electron acceptor for the implementation of photocyclic initiating system for radical photopolymerization","authors":"Léo Niederst,&nbsp;Xavier Allonas,&nbsp;Christian Ley,&nbsp;Issei Takahashi","doi":"10.1016/j.jphotochem.2024.116255","DOIUrl":"10.1016/j.jphotochem.2024.116255","url":null,"abstract":"<div><div>In this paper, a new kind of redox additive usable in photocyclic initiating systems for radical photopolymerization is presented. Di-toluene-4-sulfonamide is shown to act as a quite efficient candidate as electron acceptor due to its high reduction potential. Its effectiveness as an electron acceptor in UV to near-IR Type III photoinitiating systems for radical photopolymerization is demonstrated by interaction with three different dyes. Its implementation into type III photoinitiators leads to a two-fold enhancement of the polymerization rate. An exhaustive photochemical study is conducted giving a thorough description of the chemical reactions, demonstrating a photocatalytic cycle in the type III photoinitiating system for two of the dyes and the ability of the di-toluene-4-sulfonamide to enhance near IR sensitivity.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"462 ","pages":"Article 116255"},"PeriodicalIF":4.1,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166280","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":"Imidazopyridines as fluorogenic substrates for esterase detection","authors":"Chiara Reviglio ,&nbsp;Giorgio Volpi ,&nbsp;Elisabeth Wyart ,&nbsp;Betty Ciubini ,&nbsp;Cristina Prandi ,&nbsp;Claudia Barolo ,&nbsp;Paolo Ettore Porporato ,&nbsp;Claudio Garino","doi":"10.1016/j.jphotochem.2024.116256","DOIUrl":"10.1016/j.jphotochem.2024.116256","url":null,"abstract":"<div><div>Six substituted imidazo[1,5-<em>a</em>]pyridine and imidazo[5,1-<em>a</em>]isoquinoline derivatives have been designed and characterized as possible fluorogenic substrates for detection and application of esterase enzymes or other ester hydrolysis conditions. The optical tunability of the fluorescent scaffold has been evaluated introducing a free carboxylic acid or the corresponding methyl ester substituent, obtaining turn-on fluorescence sensing systems with large signal-to-noise ratios and high enzymatic reactivity. The probes have been tested in fluorescence imaging experiments with endogenous and exogenous esterases.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"462 ","pages":"Article 116256"},"PeriodicalIF":4.1,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166615","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":"Green Light, green Chemistry: TiO2@PPHs nanocomposite for Eco-Friendly photocatalytic oxidation of amines and degradation of Brilliant green dye","authors":"Dana A. Kader ,&nbsp;Safin A. Abdalla ,&nbsp;Sewara J. Mohammed ,&nbsp;Dara Muhammed Aziz ,&nbsp;Dlzar D. Ghafoor ,&nbsp;Trefa M. Abdullah ,&nbsp;Nian N.M. Agha ,&nbsp;Fryad S. Mustafa ,&nbsp;Sangar Ali Hassan","doi":"10.1016/j.jphotochem.2024.116253","DOIUrl":"10.1016/j.jphotochem.2024.116253","url":null,"abstract":"<div><div>For the first time, this work demonstrates an environmentally benign and sustainable catalytic process using a TiO₂@PPHs nanocomposite prepared by green synthesis. This was achieved by preparing a nanocomposite by decorating TiO₂NPs with polyphenols (PPHs) extracted from black carrots (Daucus carota), which resulted in an active photocatalyst for oxidation reactions and Brilliant Green (BG) dye degradation under visible light (green LED light). The prepared TiO₂@PPHs nanocomposite was comprehensively characterized by XRD, SEM, FT-IR, EDX, and BET analysis for pore-size distribution and specific surface area measurement. Zeta potential measurement and UV–visible DRS spectroscopy were also conducted. XRD and SEM with EDX analysis confirmed the crystallinity of the TiO₂@PPHs nanocomposite with a particle size of 67.92 nm. Surface interactions and improved optical properties with a reduction in band gap energy from 3.04 for pure TiO₂NPs to 2.02 eV for TiO₂@PPHs nanocomposite make it a suitable catalyst that can be activated under green light irradiation. The catalytic activity of TiO₂@PPHs was studied for the aerobic oxidation of amine to imines and degradation of BG dye in aqueous solution. The nanocomposite showed excellent efficiency in amine oxidation (up to 99 % conversion) and dye degradation (96 %). Mechanistic studies confirmed the significant role of the generated ROS, in particular hydroxyl and superoxide radicals, during these photocatalytic reactions. The TiO₂@PPHs catalyst also exhibited recycling sequences with stable efficient synergistic catalytic results, which highlights light on sustainability in industrial applications.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"462 ","pages":"Article 116253"},"PeriodicalIF":4.1,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166285","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":"Self-aggregation of synthetic 7- or 8-unsubstituted bacteriochlorophyll-d analogs","authors":"Kengo Nakakuki ,&nbsp;Shin-ichi Sasaki ,&nbsp;Hitoshi Tamiaki","doi":"10.1016/j.jphotochem.2024.116257","DOIUrl":"10.1016/j.jphotochem.2024.116257","url":null,"abstract":"<div><div>Zinc methyl 3¹-demethyl-bacteriopheophorbides-<em>d</em> lacking the 7-methyl or 8-ethyl group were prepared from chlorophyll-<em>b</em> or <em>a</em>, respectively, via Pinnick oxidation of a formyl to carboxy group at the 7- or 8-position followed by its pyrolysis. The substitution effects of the 7-methyl and 8-ethyl groups on the optical properties of the zinc chlorophyll derivatives in THF and in an aqueous Triton X-100 micellar solution were investigated. In tetrahydrofuran (THF), all the synthetic zinc complexes were monomeric to give sharp electronic absorption bands and highly fluorescent emission bands. The Qy absorption and fluorescence emission maxima were hypsochromically shifted in the order of zinc 7-methyl-8-ethyl-, 7-methyl-8-deethyl-, and 7-demethyl-8-ethyl-chlorins, but no significant effects of the 7- or 8-dealkylation were observed in the Qx and Soret bands. In the aqueous micelles, the three zinc 3-hydroxymethyl-13¹-oxo-chlorins self-aggregated to give broadened and red-shifted absorption bands, which were similar as in the self-aggregates of bacteriochlorophylls-<em>c</em>/<em>d</em>/<em>e</em> in the major light-harvesting antennas of green photosynthetic bacteria (chlorosomes). The dealkylation moved the red-shifted Qy maxima of the self-aggregates to shorter wavelengths than that of the alkylated compound. The substitution effect was comparable to the bathochromic shifts in the Qy bands of the bacteriochlorophyll self-aggregates in chlorosomes by the sequential methylation at the 8-ethyl terminal. The dealkylation slightly suppressed the self-aggregation ability, revealing the CH–π interaction of the alkyl groups with the chlorin chromophore in the self-aggregated supramolecules, to affect their photophysics through the excitonic interaction dependent on geometries of the chlorin macrocycles.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"462 ","pages":"Article 116257"},"PeriodicalIF":4.1,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166624","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}