Journal of Photochemistry and Photobiology A-chemistry最新文献

{"title":"Pillar[5]arene-cored hyper-structured molecular thermally activated delayed fluorescence orange-red emitters for OLEDs","authors":"Chen Ma ,&nbsp;Denghui Liu ,&nbsp;Wei Li ,&nbsp;Mingxiao Liu ,&nbsp;Kunlun Wang ,&nbsp;Yingliang Liu ,&nbsp;Shaokui Cao ,&nbsp;Shi-Jian Su ,&nbsp;Shengang Xu","doi":"10.1016/j.jphotochem.2026.117155","DOIUrl":"10.1016/j.jphotochem.2026.117155","url":null,"abstract":"<div><div>The development of solution-processable and high-efficiency orange-red/red thermally activated delayed fluorescence (TADF) emitters remains a significant challenge. In this study, a series of novel hyper-structured molecules (HSMs) TADF orange-red emitters, P5A-NDMAC_(x)-mCP_(10-x) (x = 0, 1, 3, 5, 7, 9 or 10), featuring pillar[5]arene (P5A) core covalently bonded with NDMAC (red TADF unit) and mCP (host unit) via flexible alkyl linkage, were synthesized. These obtained HSMs exhibited remarkable thermal stability and good solubility. Spin-coating P5A-NDMAC_(x)-mCP_(10-x) (x = 0, 1, 3, 5, 7, 9 or 10) as the emitting layer, all the non-doped solution-processed organic light-emitting diodes (OLEDs) showed orange-red emission. Among them, the device based on P5A-NDMAC₍₁₎-mCP₍₉₎ exhibited orange-red emission centered at 615 nm and the maximum external quantum efficiency (EQE_max) of 1.44%. Moreover, the doped device based on P5A-NDMAC₍₇₎-mCP₍₃₎, using CBP as the host matrix, showed orange emission centered at 594 nm and EQE_max of 7.50%. These results indicate that P5A is a suitable core for constructing HSMs, providing an effective and feasible strategy for developing solution-processable TADF orange-red emitters.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117155"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387843","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":"Warm white emission and excellent thermal stability of Sr9Y(PO4)7: Dy3+ single-component phosphor through Eu3+ co-doping for white light-emitting diodes","authors":"Siwei Luo ,&nbsp;Wentao Zhang ,&nbsp;Qiong Duan ,&nbsp;Jiangtao Wen ,&nbsp;Chao Zhang","doi":"10.1016/j.jphotochem.2026.117163","DOIUrl":"10.1016/j.jphotochem.2026.117163","url":null,"abstract":"<div><div>For warm white illumination, the single-component Sr₉Y(PO₄)₇: Dy³⁺, Eu³⁺ white-emitting phosphors were prepared by high-temperature solid-phase method. The XRD patterns of phosphors closely matched the typical Sr₉Y(PO₄)₇ structure with R-3 m space group. Under UV excitation of 350 nm, the Sr₉Y(PO₄)₇: Dy³⁺ produced a white light by combining blue emission (⁴F_9/2 → ⁶H_15/2) at 480 nm with yellow emission (⁴F_9/2 → ⁶H_13/2) at 576 nm. The introduction of Eu³⁺ realized a red emission peak (⁵D₀ → ⁷F₂) at 617 nm, which resulted in a reduction of the correlated color temperature as 3617.2 K. The emission intensity of Sr₉Y(PO₄)₇: Dy³⁺, Eu³⁺ under as high temperature as 483 K still remained more than 84% of the original intensity at room temperature, revealing a strong thermal stability in luminescence. And the external quantum efficiency for Sr₉Y(PO₄)₇: 0.08Dy³⁺, 0.12Eu³⁺ was calculated to be 23.15%. Moreover, the fabricated <em>w</em>-LEDs were able to emit a warm white light with a high color rendering index of 88.7. All the results suggested the as-prepared Sr₉Y(PO₄)₇: Dy³⁺, Eu³⁺ phosphor has potential applications in the field of white light-emitting diodes.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117163"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387844","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":"Broad-range time-dependent afterglow colors in multi-confinement effect carbon dots for high-security dynamic information encryption","authors":"Xin Bao ,&nbsp;Xuteng Wu ,&nbsp;Yinghe Jin ,&nbsp;Dehao Kong ,&nbsp;Xiaoqi Liu ,&nbsp;Yifu Zhang ,&nbsp;Xinlin Yang ,&nbsp;Hui Wang ,&nbsp;Xi Yuan ,&nbsp;Hui Li","doi":"10.1016/j.jphotochem.2026.117154","DOIUrl":"10.1016/j.jphotochem.2026.117154","url":null,"abstract":"<div><div>Arising from multiple triplet emission centers with distinct lifetimes, the time-dependent afterglow color (TDAC) phenomenon demonstrates significant potential for dynamic phosphorescence anti-counterfeiting and information encryption. However, insufficient spectral separation between triplet emissive peaks usually confines TDAC in carbon dots (CDs) to narrow color ranges, limiting distinguishability and security in advanced optical applications. Herein, a broad-range TDAC transition from deep orange to cyan within 1 s was achieved in an aluminum-ion doped CDs based composite (Al-CD@ Urea) via a rational synthesis process. The multi-confinement effect arising from the urea and silica matrix collectively facilitates triplet exciton stabilization and suppresses non-radiative transitions, thereby promoting enhanced phosphorescence emission in the composite system. Aluminum doping modifies the bandgap of CD, which realizes a blue TADF (peak at 450 nm) and a red RTP (peak at 590 nm) simultaneously under 360 nm excitation in composite system. The dual afterglow emission with distinct lifetimes collectively drives the observed broad color range TDAC phenomenon. Leveraging the broad-range TDAC properties in the Al-CD@ Urea, we developed dynamic afterglow anti-counterfeiting labels and a concept of information encryption with enhanced distinguishability and security, demonstrating practical viability for advanced optical applications.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117154"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387842","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":"Deep-blue solid-state emission from Ternaphthalene: Photophysical tuning via multi-chromophore architectures","authors":"Minoru Yamaji ,&nbsp;Kengo Suzuki ,&nbsp;Hideki Okamoto","doi":"10.1016/j.jphotochem.2026.117156","DOIUrl":"10.1016/j.jphotochem.2026.117156","url":null,"abstract":"<div><div>We report the synthesis and photophysical characterization of a series of “all-naphthalene” multi-chromophore systems, ternaphthalenes (TNps), designed for efficient deep-blue solid-state emission. Unlike planar polycyclic aromatic hydrocarbons that suffer from aggregation-caused quenching (ACQ), the twisted molecular architecture of TNps effectively inhibits π-π stacking interactions. Consequently, several TNps exhibit crystallization-induced emission enhancement (CIEE) or retain high quantum yields (up to 0.94) in the solid state. Kinetic analysis revealed that this efficiency stems from the significant suppression of non-radiative rates (<em>k</em>_nr) due to the restricted intramolecular rotation in the rigid crystal lattice. Furthermore, a decisive topological effect on the radiative rate (<em>k</em>_f) was demonstrated. The 1,4-, 1,5- and 2,6-linked isomers display allowed transitions with large oscillator strengths (<em>f</em>) and fast radiative rate (<em>k</em>_f = ca. 5 × 10⁸ s⁻¹), whereas the 2,7-linked isomers exhibit forbidden-like character with prolonged lifetimes. A distinct linear correlation between the experimental and calculated values empirically supports the applicability of the Strickler-Berg relationship in both solution and solid states. These findings demonstrate that controlling the chromophore connectivity is a powerful strategy to tune excited-state dynamics for developing high-performance deep-blue organic emitters.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117156"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387902","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":"Photophysical control of aggregation in Perylene Bisimide derivatives by molecular design","authors":"B. Venugopal,&nbsp;Nayela Javeed,&nbsp;G. Shanker,&nbsp;Ganga Periyasamy","doi":"10.1016/j.jphotochem.2026.117148","DOIUrl":"10.1016/j.jphotochem.2026.117148","url":null,"abstract":"<div><div>This systematic study reports on the photophysical properties of perylene bisimide (<strong>PBI</strong>) and its derivatives substituted with pyridine (<strong>PDP</strong>) and cholesterol (<strong>PDC</strong>) groups using UV–Vis, fluorescence spectroscopy methods, alongside density functional theory (<strong>DFT</strong>) and time-dependent DFT (<strong>TDDFT</strong>) calculations. UV–Vis absorption and fluorescence spectroscopy show that <strong>PDP</strong> and <strong>PDC</strong> exhibit near mirror-image absorption and emission spectra with Stokes shifts of 29 and 19 nm, respectively. In contrast, <strong>PBI</strong> displays a negligible Stokes shift and lacks mirror symmetry due to strong excimer formation facilitated by its highly planar bisimide core. <strong>TDDFT</strong> computations accurately reproduce the main π → π* electronic transitions in high-energy (298–300 nm) and low-energy (430–454 nm) regions, in agreement with experimental absorption data. However, theoretical emission spectra indicate greater overlap between absorption and fluorescence than observed experimentally, reflecting limitations of the Franck–Condon approximation in accounting for excited-state relaxation. Dimer models reveal pronounced cofacial <em>H</em>-aggregate-like with shift characteristics, with <strong>PDC</strong> exhibiting the highest stability (binding energy of −6.46 eV), followed by <strong>PDP</strong> (−6.36 eV) and <strong>PBI</strong> (−5.48 eV). Despite its lower dimer stability, <strong>PBI</strong> shows the broadest excimer emission, attributed to its increased dipole moment and extended π-π interactions. Red-shifted electronic transitions in the dimers confirm excitonic coupling and reduced oscillator strengths typical of <em>J</em>-aggregates. The computational models, which omit the bulky cholesterol substituents, permit excimer stabilization in <strong>PDC</strong>. In contrast, in the experimental systems, steric hindrance imposed by the cholesterol groups restricts close π–π stacking and thus limits aggregation. This steric effect is further validated by calculations on the cholesterol-substituted <strong>PDC</strong> model, which exhibits a slip-stacked dimer configuration. During the dimer formation, the charge separation occurs, where one monomer act as Donor and other one as acceptor, where the hole migration dynamics are explored using the frozen nuclei treatment. This combined experimental and theoretical investigation highlights how molecular planarity, steric effects, and excitonic interactions govern the balance between excimer and <em>J</em>-aggregate emission in perylene derivatives. These insights will inform the rational design of organic semiconductors and fluorescence sensors employing <strong>PBI</strong>-based architectures in optoelectronic applications.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117148"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387904","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":"Tuning the intrinsic surface sulfur vacancies in ZnS for achieving high performance H2 evolution","authors":"Kai Feng ,&nbsp;Libing Qian ,&nbsp;Pengwei Zeng ,&nbsp;Chunhui Dai ,&nbsp;Chao Zeng","doi":"10.1016/j.jphotochem.2026.117166","DOIUrl":"10.1016/j.jphotochem.2026.117166","url":null,"abstract":"<div><div>Benefiting from the advantages of surface defects on promoting the three basic processes in photocatalysis, defect engineering is regarded as an efficient strategy to boost the photoactivity of semiconductor photocatalysts. However, the influence of the intrinsic defects in photocatalysts on photocatalysis is always ignored and rarely investigated, and the excessive defects can also lead to adverse effects. Herein, we provide a strategy to optimize the concentration of intrinsic surface defects for photocatalysts to obtain high performance. The treatment of electron beam irradiation on ZnS decreases its intrinsic surface sulfur vacancies (Vs), demonstrated by electron paramagnetic resonance (EPR) spectra and positron annihilation characterization. This modification leads to the enhanced photo-response in UV light region, charge separation and transfer efficiency, as well as hydrophilicity, hence boosting the photocatalytic performance on H₂ evolution.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117166"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387900","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":"Mechanistic insights into substituent position effects on ESIPT and singlet–triplet interactions in BrA-HBI","authors":"Xinlin Yang,&nbsp;Tianyu Cui,&nbsp;Siqi Wang,&nbsp;Yinghe Jin,&nbsp;Hui Li","doi":"10.1016/j.jphotochem.2026.117159","DOIUrl":"10.1016/j.jphotochem.2026.117159","url":null,"abstract":"<div><div>Positional substitution of functional groups plays a decisive role in modulating excited-state intramolecular proton transfer (ESIPT) and its coupling with singlet–triplet interactions, thereby directly impacting thermally activated delayed fluorescence (TADF) and the associated photophysical properties. Three novel derivatives (<strong>BrA-1-HBI, BrA-2-HBI, and BrA-3-HBI</strong>) were designed by systematically varying the positions of <img>Br and –CHO substituents in the <strong>(2′-hydroxyphenyl)benzimidazole scaffold</strong> (<strong>BrA-HBI</strong>). Density functional theory (DFT) and time-dependent DFT (TD-DFT) methods were employed to investigate their ESIPT properties and photophysical responses. The results show that all positional isomers exhibit reduced ESIPT barriers and red-shifted emission spectra. Remarkably, <strong>BrA-3-HBI</strong> undergoes a two-step excited-state double proton transfer (ESDPT), yielding an exceptionally large Stokes shift of ∼1.24 × 10⁴ cm⁻¹. Moreover, positional substitution alters the transition character from weak n → π* to strong π → π*, thereby activating Enol-state emission, enabling dual fluorescence channels, and reprogramming ISC pathways from the Keto state toward the Enol state. These results show that the <img>Br inductive effect and –CHO conjugation strengthen the intramolecular H-bond and promote ESIPT, offering a rational strategy for designing high-performance ESIPT-based optoelectronic materials.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117159"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387944","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":"Double-shelled BaTiO3/TiO2 hollow spheres: Structural synergy driven enhancement in piezo-photocatalytic dye degradation","authors":"Nan Zhao ,&nbsp;Liang Pei ,&nbsp;Jianjiao Xin ,&nbsp;Xiuwen Wang ,&nbsp;Li Sun ,&nbsp;Xiaoming Huang ,&nbsp;Bing Zhao","doi":"10.1016/j.jphotochem.2026.117144","DOIUrl":"10.1016/j.jphotochem.2026.117144","url":null,"abstract":"<div><div>The synergistic integration of light energy harvesting and mechanical energy conversion is posited as a transformative approach to enhance environmental stewardship while advancing sustainable energy solutions. This work demonstrates the first successful hydrothermal synthesis of BaTiO₃/TiO₂ double-shelled hollow sphere heterostructures for synergistic piezo-photocatalysis. Their piezo-photocatalytic activity was comprehensively assessed using methylene blue aqueous dye decomposition tests. Under combined ultrasound and visible light exposure, the BaTiO₃/TiO₂ double-shelled hollow spheres achieved a degradation efficiency of 95.8% within 60 min, surpassing both pure-phase BaTiO₃ nanoparticles (64.8%) and BaTiO₃ double-shelled hollow spheres (89.9%). The enhanced performance originates from three synergistic mechanisms: (1) The unique double-shelled architecture demonstrates amplified structural deformability under mechanical stress, significantly increasing specific surface area and light-harvesting efficiency; (2) <em>Z</em>-Scheme heterojunction at the BaTiO₃/TiO₂ interface facilitates spatial separation of photogenerated carriers and maximizes the preservation of their redox ability; (3) Oxygen vacancies at interfacial regions serve as electron traps, effectively suppressing charge recombination. This work demonstrates that microstructural engineering coupled with heterojunction design creates synergistic piezo-photocatalytic effects, providing a novel strategy for developing high-efficiency energy-conversion catalysts.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117144"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387846","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":"Photophysical insights into acridine orange–polyglutamic acid interaction and its application in ratiometric turn-on heavy metal ion recognition","authors":"Mohammed A.I. Shaikh ,&nbsp;Mhejabeen Sayed","doi":"10.1016/j.jphotochem.2026.117145","DOIUrl":"10.1016/j.jphotochem.2026.117145","url":null,"abstract":"<div><div>Polyglutamic acid (PGA), a biodegradable and multifunctional biopolymer rich in carboxylate groups, holds strong promise for designing supramolecular sensing systems to address the urgent problem of heavy metal contamination. This study presents a systematic investigation of the detailed photophysical behaviour of acridine orange (AO) upon interaction with PGA, combined with the application of an indicator displacement assay (IDA) strategy using a PGA-based complex for heavy metal ion recognition. Spectroscopic investigations revealed distinct spectroscopic alterations, including a ∼ 34 nm blue shift in absorption, pronounced fluorescence quenching, a bisignate CD signal, and longer fluorescence lifetime, indicative of AO aggregate formation on the PGA scaffold. Harnessing these photophysical changes, the aggregated AO–PGA complex was applied for ratiometric turn-on sensing of Cd²⁺, Pb²⁺, and Cu²⁺ via indicator displacement mechanism, wherein metal ion binding triggers the dissociation of AO aggregates and restores the monomeric AO spectral features. The system exhibited detection limits of 0.19 μM for Cd²⁺, 0.29 μM for Pb²⁺, and 0.47 μM for Cu²⁺ in nanopure water, with the enhanced sensitivity towards Cd²⁺. Its practical applicability was further validated in tap water and 2% seawater, demonstrating the potential of this complex for environmental monitoring of heavy metal ion contamination.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117145"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387901","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":"Theoretical design of novel selenium-substituted meso-aryl-BODIPYs as singlet‑oxygen photosensitizers with biomedical applicability","authors":"Mónica Moral ,&nbsp;Antonio Fernández ,&nbsp;Luis Manuel Frutos ,&nbsp;Andrés Garzón-Ruiz","doi":"10.1016/j.jphotochem.2026.117151","DOIUrl":"10.1016/j.jphotochem.2026.117151","url":null,"abstract":"<div><div>This is a DFT study on selenium-substituted <em>meso</em>-aryl-BODIPYs aimed at designing novel singlet‑oxygen photosensitizers with potential biomedical applicability. Three different selenium-containing heterocycles (2,3-dihydro-1,3-selenazole, 1,3-oxaselenole and 1,3-thiaselenole) were combined with diverse types of <em>meso</em>-aryl-BODIPYs. The incorporation of selenium atoms into BODIPYs is a novel strategy to enhance the photosensitizer performance, reducing the toxicity associated with the use of metal atoms. The present study provides new perspectives on the use of these novel agents which have been scarcely developed to date. Diverse electronic descriptors such as the absorption maxima wavelength, singlet-triplet energy gap and spin-orbit coupling were used in subsequent screening steps to select the most suitable candidates as photosensitizers with biomedical applicability. These descriptors are related to the light absorption within the therapeutic window, the triplet-state formation efficiency, the triplet-state lifetime and the energy transfer to the molecular oxygen.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117151"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387917","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}