Advanced Optical Materials最新文献

{"title":"Chiral Molecular Scintillators of Zn-Tb Heterometallic Complex With Excellent Circularly Polarized Luminescence and High-Resolution X-Ray Imaging","authors":"Yaqing Liao,&nbsp;Junjie Hu,&nbsp;Ling Wang,&nbsp;Sien Yin,&nbsp;Xiang Li,&nbsp;Shuidong Zhu,&nbsp;Yingbing Lu,&nbsp;Yan Peng,&nbsp;Jinsheng Liao,&nbsp;He-Rui Wen","doi":"10.1002/adom.71699","DOIUrl":"https://doi.org/10.1002/adom.71699","url":null,"abstract":"<div>\u0000 \u0000 <p>Chiral molecular scintillators that can emit circularly polarized luminescence (CPL) under X-ray irradiation have significant application potential in fields such as high-resolution imaging, 3D display, quantum computing, and deep-induced enantioselective photopolymerization. Herein, two pairs of novel chiral molecular scintillators of Zn-Tb heterometallic complexes, namely [Zn₂Tb(<i>R,R/S,S</i>−L)₂(H₂O)X₂](X)·CH₃OH·H₂O (X = Cl⁻ for <b><i>R/S</i>-1</b>; X = Br⁻ for <b><i>R/S</i>-2</b>) were synthesized. The enantiomeric complexes have CPL with asymmetry factors (|<i>g</i>_lum|) of 3.8 × 10⁻² and 3.5 × 10⁻² at the strongest emission and high quantum yield of 73.2% and 58.4% for <b><i>R/S</i>-1/2</b>, respectively. Moreover, <b><i>R/S</i>-1/2</b> exhibit circularly polarized radioluminescence (CPRL) with ultra-bright emission, high light yields, and ultra-low X-ray detection limit. The <i>g</i>_RL are around 1.2 × 10⁻³ for <b><i>R/S</i>-1</b> and 6.1 × 10⁻³ for <b><i>R/S</i>-2</b> in solid state. The X-ray detection limits are 63.91 for <b><i>R</i>-1</b> and 39.92 nGy s⁻¹ for <b><i>R</i>-2</b>. Furthermore, <b><i>R/S</i>-1/2</b>@PMMA films with higher <i>g</i>_RL of 7.2 × 10⁻³ and 7.5 × 10⁻³ were fabricated for X-ray imaging, proving a superior resolution of 20.131 lp/mm for the internal information of objects. This work reports the first synthesis of the chiral Zn-Tb heterometallic complexes exhibiting excellent CPL and CPRL, which provides new insights into the synthetic design of chiral molecular scintillators.</p>\u0000 </div>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 35","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148981435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural Reconfiguration Unlocks Pressure-Ultrasensitive and Efficient Above-Bandgap Emission in (AMP)PbI4 Perovskite for Optical Manometry","authors":"Shuo Yang,&nbsp;Shuailing Ma,&nbsp;Marcin Runowski,&nbsp;Peng Du,&nbsp;Sebastian Mahlik,&nbsp;Min Lian,&nbsp;Xingbin Zhao,&nbsp;Yifan Tian,&nbsp;Hongwei Wang,&nbsp;Tian Cui","doi":"10.1002/adom.71676","DOIUrl":"https://doi.org/10.1002/adom.71676","url":null,"abstract":"<div>\u0000 \u0000 <p>Optical pressure measurement technique provides convenience and high-precision capability to remote pressure probing, which holds broad application potential in fields such as high-pressure physics, novel material synthesis, and micro/nanoelectronics. Nevertheless, under relatively low-pressure conditions (below ≈ 5 GPa), highly sensitive pressure sensors are required due to the low sensitivity, and pressure-induced quenching effects in various optical manometry. To address these limitations, we reported an ultrasensitive, excitonic luminescent optical sensor based on Dion–Jacobson (D–J) phase perovskite (AMP)PbI₄ (AMP = 4-(aminomethyl)piperidine). Upon compression, (AMP)PbI₄ exhibits an above-bandgap emission with the intensity enhancement of approximately 300% at 0.97 GPa and a pronounced redshift, resulting in an exceptional sensitivity of d<i>λ</i>/d<i>p</i> = 24.283 nm/GPa. Combining synchrotron diffraction and Density Functional Theory (DFT) calculations, we attributed the ultrasensitivity of the above-bandgap emission to the intrinsically soft lattice. The pressure-induced enhancement in luminescence, on the other hand, is associated with local Pb─I bond reconfiguration and optimized [PbI₆] octahedral connectivity, which facilitate radiative recombination in the low-pressure regime. These results not only underscored the significant potential of structure reconfiguration tuning of the above-bandgap emission for high-performance optical pressure sensing materials, but also offered valuable insights into the underlying mechanism governing high-pressure luminescence.</p>\u0000 </div>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 35","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148981482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revealing Mechanofluorochromism and Intricate Long-lived Decay Pathways in Keto-Coumarin-Based Molecular Crystals","authors":"Peter W. McDonald,&nbsp;Subhadeep Das,&nbsp;Arnab Mandal,&nbsp;Gilles Clavier,&nbsp;Clémence Allain,&nbsp;Abhijit Patra,&nbsp;Rémi Métivier","doi":"10.1002/adom.71696","DOIUrl":"https://doi.org/10.1002/adom.71696","url":null,"abstract":"<p>Donor–acceptor organic molecules have opened a new frontier in optical materials by offering access to an array of tunable luminescence pathways. However, one remaining challenge is controlling photophysical pathways through molecular design principles. To address it, in-depth steady-state and time-resolved luminescence characterization is required to elucidate the various decay processes. In this study, the mechanofluorochromic properties of two keto-coumarin derivatives (ECBP and DCBP) are investigated, and their luminescence decay behavior in the solid-state is analyzed. Both exhibit mechanofluorochromism and complex solid-state decay profiles. However, the nature of their excited-state decay pathways differs due to their distinct donor moieties (diethylamine–ECBP, diphenylamine–DCBP) and crystal packing. Remarkably, DCBP exhibits multiple competing radiative decay pathways in crystalline form, including emission from the locally excited state, charge-transfer state, delayed fluorescence, and weak room temperature phosphorescence. The long-lived emission has been greatly enhanced by doping DCBP into a benzophenone matrix, allowing it to be employed in two-level information encryption. This study underscores the need for detailed photophysical investigations to uncover mechanistic insights that guide the design of next-generation mechanochromic long-lived emissive molecular optical materials for cutting-edge optical applications.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 35","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.71696","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148981488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Giant Flexoelectric Effect in MoS2 for High-Performance Photodetectors and Reconfigurable Logic Computing","authors":"Yuqi Ren,&nbsp;Qinwen Xu,&nbsp;Chenxi Hu,&nbsp;Bingqian Xu,&nbsp;Binghui Lin,&nbsp;Haiyang Li,&nbsp;Yao Cai,&nbsp;Chengliang Sun","doi":"10.1002/adom.71693","DOIUrl":"https://doi.org/10.1002/adom.71693","url":null,"abstract":"<div>\u0000 \u0000 <p>Conventional two-dimensional photodetectors suffer from intrinsic inversion symmetry that hinders carrier separation and responsivity. Here we demonstrate a self-driven flexoelectric photodetector (FPD) requiring no external force. By transferring MoS₂ onto a microwell substrate, conformal sagging induces a stable strain gradient that breaks inversion symmetry. At the optimized 4 µm microwell, the effective piezoelectric coefficient is 5.5 times that of flat regions. First‑principles calculations fill the theoretical gap for the flexoelectric coefficient of MoS₂. The strain‑gradient‑induced polarization modulates the metal–semiconductor Schottky barrier, enabling unidirectional photocurrent. Under 405 nm illumination, the FPD achieves an 18‑fold enhancement in responsivity. Moreover, simply by reversing the source‑drain voltage, both NAND and NOR logic functions are realized within a single device—surpassing conventional four‑device cascades. This study establishes a device-level strategy for utilizing the flexoelectric effect to develop high-performance, highly integrable, and low-power optoelectronic computing systems.</p>\u0000 </div>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 35","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148981513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two-Dimensional Plasmonic Hot Spots Engineering for Photocatalysis","authors":"Ziming Liu,&nbsp;Shengsui Cai,&nbsp;Lei Shao,&nbsp;Qin Yang,&nbsp;Sheng Chen,&nbsp;Bin Yan,&nbsp;Runfang Fu","doi":"10.1002/adom.71694","DOIUrl":"https://doi.org/10.1002/adom.71694","url":null,"abstract":"<div>\u0000 \u0000 <p>Plasmonic nanostructures can generate hot carriers (electrons and holes) that are powerful for converting solar energy into chemical energy by using low-energy photons. However, this conversion efficiency still remains too limited to satisfy practical applications. One way to improve conversion efficiency is to accelerate the hot carrier generation. Introducing nanogaps into plasmonic nanostructures has demonstrated an efficient way to generate “hot spots” where the localized electric field is extensively enlarged. Such hot spot areas further improve the hot carrier generation efficiency. In this work, we design 2D plasmonic nanosheets that form hot spots over a wide 2D range. Fano resonances are observed in the 2D plasmonic nanosheets, which contribute to enhancing the localized electric field. The small-gapped 2D nanosheets demonstrate a prominent Fano resonance and a largely enhanced electric field within the nanogaps, accelerating the hot electron generation. We further observe a low charge transfer resistance on the surface of the small-gapped 2D nanosheets. These two factors consequently contribute to a high photocatalytic rate. The stable 2D nanosheets with the engineerable hot spots indicate a new design for the high-efficiency plasmonic photocatalysts.</p>\u0000 </div>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 35","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148981520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bloch Surface Wave-Coupled Enhanced Fluorescence on a Nano-Assembly–Photonic Crystal Hybrid Interface for Ultrasensitive Detection","authors":"Sudha Maria Lis S,&nbsp;Weinan Liu,&nbsp;Seemesh Bhaskar,&nbsp;Somnath Pandit,&nbsp;Brian T. Cunningham,&nbsp;Shivakiran Bhaktha B. N.","doi":"10.1002/adom.71496","DOIUrl":"https://doi.org/10.1002/adom.71496","url":null,"abstract":"<div>\u0000 \u0000 <p>There is an ever-increasing demand for miniaturization and portability of reliable sensor platforms for individualized health monitoring in diagnostics. Photonic crystals (PC)-based frameworks in conjugation with fluorescence techniques efficiently address these requirements on account of their high sensitivity, compactness, and robust integrated features. Here we demonstrate fluorophore emission engineering via Bloch surface waves (BSWs) supported by one-dimensional PCs. Since brighter emission directly translates to improved detection performance, achieving highly sensitive PC platforms necessitates careful interfacial nano-engineering. In this context, cryosorets, which are hybrid nano-assemblies composed of gold nanoparticles (AuNPs) and TiO₂ nanorods (TiO₂ NRs), are used to generate three-dimensional multi-fold hotspots. When interfaced with a PC, the resulting metallo-dielectric hybrid yields photonic crystal-coupled emission (PCCE), mitigating the challenge of fluorescence quenching. The nanoscale gaps between the plasmonic AuNPs, high refractive index (HRI) TiO₂ NRs, and graphene oxide (GO) hybrid interface generate strong hotspots, augmenting the fluorescence coupling via the underlying BSW. Integrating such sensors onto smartphones and other personalized devices to enable rapid, on-site sensing of target analytes is need of the hour. The high 1300-fold PCCE enhancement enables attomolar sensing of rhodamine reporter molecule and is demonstrated here using a smartphone camera as a detector amenable for resource limited settings.</p>\u0000 </div>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 35","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148981535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly Spin-Polarized Luminescent Quantum Nanomaterials Integrated with a Defect-Enabled Spin-Filtering Function","authors":"Ayano Morita,&nbsp;Mattias Jansson,&nbsp;Junichi Takayama,&nbsp;Irina A. Buyanova,&nbsp;Weimin M. Chen,&nbsp;Akihiro Murayama,&nbsp;Satoshi Hiura","doi":"10.1002/adom.71622","DOIUrl":"https://doi.org/10.1002/adom.71622","url":null,"abstract":"<div>\u0000 \u0000 <p>Highly spin-polarized luminescence at room temperature is essential for active layers in practical opto-spintronic devices. Although this has been achieved in existing studies, a spatial separation of electrons and holes occurs, which typically reduces radiative recombination efficiency. As such, incorporating a defect-enabled spin-filtering function into semiconductor quantum dots (QDs) with 3D quantum confinement is necessary. This study introduces spin-filtering defects and primarily investigates the electron spin dynamics in dilute nitride InGaAsN QDs using time-resolved circularly polarized photoluminescence. InGaAsN QDs exhibit suppressed electron thermal escape and a wide tunability of the emission wavelength through nitrogen incorporation. However, their potential for opto-spintronic applications has not yet been explored. Here, the QDs integrated with a spin-filtering function are found to coexist with conventional QDs. The circularly polarized luminescence properties of the novel QDs are extracted via rate equation analysis, considering spin-dependent electron capture by the defect states. The QDs exhibit a high circular polarization exceeding 50% at room temperature (295 K) owing to the suppressed state-filling effect and the selective capture of minority spins from the QD emissive to defect states. These findings pave the way for developing practical opto-spintronics nanomaterials that combine high luminescence intensity with highly spin-polarized luminescence.</p>\u0000 </div>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 34","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eco-Designed Transparent Bacterial Cellulose Composites for Next-Generation Opto-Electronics","authors":"Liya Antony,&nbsp;Sanosh Kunjalukkal Padmanabhan,&nbsp;Amal Alliyankal Vijayakumar,&nbsp;Marco Pugliese,&nbsp;Maria Assunta Signore,&nbsp;Antonella Giuri,&nbsp;Vincenzo Maiorano,&nbsp;Antonio Licciulli,&nbsp;Sonia Carallo,&nbsp;Aurora Rizzo,&nbsp;Carola Esposito Corcione","doi":"10.1002/adom.71621","DOIUrl":"https://doi.org/10.1002/adom.71621","url":null,"abstract":"<p>Sustainable, bio-based alternatives to petrochemical substrates are essential for the fabrication of next-generation optoelectronic devices. However, very few natural materials offer simultaneously high transparency, mechanical robustness, and functional versatility. Bacterial cellulose (BC) is mechanically exceptional but intrinsically opaque and hydrophilic, limiting its applicability in transparent optic and optoelectronics. Here, we report a single-step, room-temperature fabrication of a highly transparent BC composite via vacuum infiltration with plant-derived soya resin (SGR). The resulting BC/SGR films achieves ∼89% optical transparency, 12% haze at 550 nm, and low reflectivity, while exhibiting enhanced tensile strength (up to 100 MPa), UV resistance, and hydrophobicity. Remarkably, its thermal conductivity is ∼50% lower than glass, and the substrate supports electrode deposition, enabling flexible, transparent, and functional optoelectronic devices. The applicability of this material is demonstrated by the fabrication of an electrochromic device, showing a transmittance modulation from 66% (bleached state) to 23% (colored state) at 550 nm. This green and scalable approach transforms bacterial cellulose into a high-performance material, opening new pathways toward sustainable materials that merge ecological responsibility with advanced optoelectronic and optic functionality.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 34","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.71621","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stirring-Induced Modulation of NIR Emission in Tm3+-Doped Nanoparticles: Evidence of Apparent Risetime Sensitivity","authors":"York Estewin Serge-Correales,&nbsp;Mohammadreza Khodabakhsh,&nbsp;Nayara de Melo Costa-Serge,&nbsp;Rogéria Rocha Gonçalves,&nbsp;Eva Hemmer","doi":"10.1002/adom.71644","DOIUrl":"https://doi.org/10.1002/adom.71644","url":null,"abstract":"<p>Recent studies on upconverting nanoparticles have shown that photoluminescence can indicate fluid motion, for example, through flow-dependent intensity ratios in the visible region. Building on this underexplored yet emerging direction, we here report the stirring-dependent near-infrared response in Tm³⁺-doped fluoride nanoparticles, providing the foundation for novel near-infrared flow sensors. More precisely, in colloidal dispersions of Tm³⁺-doped NaYbF₄ nanoparticles excited at 980 nm, stirring reproducibly and reversibly decreases the emission intensity at 1485 nm (Tm³⁺: ³H₄ → ³F₄) and simultaneously increases the emission around 1850 nm (Tm³⁺: ³F₄ → ³H₆). This effect is quantified by the luminescence intensity ratio (LIR = <i>I</i>₁₄₈₅/<i>I</i>₁₈₅₀), which decreases with stirring speed. Importantly, time-resolved measurements show unchanged apparent luminescence lifetimes but altered apparent risetimes for both states under stirring, providing strong evidence for changes in population dynamics rather than decay kinetics as underlaying mechanism. Indeed, under direct, single-step 808 nm excitation of ³H₄, no stirring-induced changes are observed, opposed to the proposed mechanism involving a multistep excitation pathway that populates ³H₄ under 980 nm pumping. These findings represent an important step toward NIR-II motion sensing using Tm³⁺-doped nanoparticles and remote optical monitoring of agitation and flow in applications where deeper light penetration is advantageous.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 34","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.71644","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acetylene Functionalization of Multiple-Resonant Materials Enabling Strong Two-Photon Absorption and Delayed Luminescence With Highly Efficient Exciplex-Sensitized Electroluminescence","authors":"Ikechukwu D. Nwosu,&nbsp;Debasish Barman,&nbsp;Samuel L. Powley,&nbsp;Tárcius N. Ramos,&nbsp;Nguyen Le Phuoc,&nbsp;Tomi Leinonen,&nbsp;Charles T. Smith,&nbsp;Mireille Blanchard-Desce,&nbsp;Jonathan Daniel,&nbsp;Mikko Linnolahti,&nbsp;Yoann Olivier,&nbsp;Chihaya Adachi,&nbsp;Alexander S. Romanov","doi":"10.1002/adom.71649","DOIUrl":"https://doi.org/10.1002/adom.71649","url":null,"abstract":"<p>Two-photon absorbing (2PA) luminophores with narrowband emission are rare despite growing demand for color-pure optoelectronic materials. Multiple-resonance thermally activated delayed fluorescence (MR-TADF) emitters offer intrinsically narrow emission, but their nonlinear optical response remains largely unexplored. We report a dipolar MR-TADF emitter, DtCzBCCH, where installation of a terminal acetylene moiety in carbazole-fused 1,4-azaborine DtCzB-core enhanced 2PA, two-photon delayed luminescence and enabled energy-efficient exciplex-sensitized electroluminescence. Installation of a terminal acetylene moiety extends π-conjugation and delocalizes the LUMO, introducing partial intramolecular CT (ICT) character to the second singlet excited state (S₂). Such modification of DtCzB with an acetylene group enhances the two-photon absorption cross-section from 36 GM for DtCzB to 156 GM for DtCzBCCH, while preserving unity photoluminescence quantum yield and narrowband emission. Theoretical calculations revealed the excited-state decoupling mechanism, where the S₂ state mainly contributes to two-photon absorption, whereas the S₁ state is responsible for narrowband emission. Exciplex-host sensitized solution-processed and vacuum-deposited OLEDs deliver green electroluminescence with a peak external quantum efficiency of 25.2%, retaining 94.2% efficiency at 1000 cd m⁻² and operational stability up to LT₅₀ = 30 h. This acetylene-mediated multiresonance CT design provides a general route to integrate strong 2PA with color-pure, and stable electroluminescence for integrated optoelectronic-photonic applications.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 34","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.71649","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148942478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}