ACS Applied Optical Materials最新文献_第9页

Molecularly Engineered Dual-Emission Pathways with Monomer–Excimer Interplay for Single-Component Blue and White Organic Light-Emitting Diodes 单组分蓝白有机发光二极管的分子工程与单体-准分子相互作用的双发射途径。

IF 3.4

ACS Applied Optical Materials Pub Date : 2026-06-26 Epub Date: 2026-05-27 DOI: 10.1021/acsaom.6c00161

Ehsan Ullah Rashid, Rishika Suresh, Dmytro Volyniuk, Sathiyanarayanan Kulathu Iyer, Juozas V. Grazulevicius

{"title":"Molecularly Engineered Dual-Emission Pathways with Monomer–Excimer Interplay for Single-Component Blue and White Organic Light-Emitting Diodes","authors":"Ehsan Ullah Rashid, Rishika Suresh, Dmytro Volyniuk, Sathiyanarayanan Kulathu Iyer, Juozas V. Grazulevicius","doi":"10.1021/acsaom.6c00161","DOIUrl":"10.1021/acsaom.6c00161","url":null,"abstract":"The design of an organic molecule that inherently exhibitsmultipleemissive channels provides an elegant strategy for structurally simpleyet spectrally broad white organic light-emitting diodes (OLEDs).Herein, we report the rational design and synthesis of a donor−π-acceptorluminophore (DBP-PXZ), comprising a phenoxazine donormoiety and a tetrahydrodibenzophenanthridine acceptor fragmentlinked through a twisted phenylene bridge. The photoluminescence (PL)spectrum of the solid sample of the compound exhibits dual emissionbands, resulting in single-component white emission with CIE coordinatesof (0.31, 0.38). PL spectral analysis of the solid solutions in polarhost matrices and in a PMMA matrix demonstrates that controlled modulationof intermolecular proximity selectively activates or suppresses alow-energy emissive channel. Close chromophore packing activates intermolecularcharge transfer (CT)-type excimer emission, while spatial isolationsuppresses this pathway and yields purely blue emission from the monomericCT state. Computational calculations support the stabilization ofan intermolecular CT excited state of dimeric models relative to themonomeric ones. Leveraging this dual-emissive nature, host-free OLEDsbased on a thin layer of DBP-PXZ as emissive layer exhibita broadband electroluminescence spectrum spanning the range of ca.385–800 nm. The device with an emissive layer of diluted DBP-PXZ with a wide-bandgap host effectively suppresses excimerformation and enables a pure blue EL spectrum. This work highlights DBP-PXZ as a single-component emitter enabling tunable blue-to-whiteemission via monomeric and excimer CT states, offering a compositionallysimplified and heavy-metal-free emitter approach inspired by a sustainability-drivenOLED design.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"4 6","pages":"1787–1797"},"PeriodicalIF":3.4,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148362601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Emulsion–Demulsion Route to MAPbI3 Perovskite Thin Films for Optical Energy Transducer Application 光能量传感器用MAPbI3钙钛矿薄膜的乳剂-乳化制备

IF 3.4

ACS Applied Optical Materials Pub Date : 2026-06-26 Epub Date: 2026-06-06 DOI: 10.1021/acsaom.6c00050

Adithya Nath Reghunathan, Aruna Raj, Ramakrishnan Jayakrishnan

{"title":"Emulsion–Demulsion Route to MAPbI3 Perovskite Thin Films for Optical Energy Transducer Application","authors":"Adithya Nath Reghunathan, Aruna Raj, Ramakrishnan Jayakrishnan","doi":"10.1021/acsaom.6c00050","DOIUrl":"10.1021/acsaom.6c00050","url":null,"abstract":"We report the synthesis of methylammonium lead iodide(MAPbI3) thin films via an emulsion–demulsion (E-LARP)routeand provide a comprehensive evaluation of their structural, optical,and optoelectronic properties with emphasis on stability and energytransduction performance. X-ray diffraction and transmission electronmicroscopy confirm the tetragonal I4/mcm phase with nanocrystalline ordering, while elemental mapping andsurface analyses reveal intrinsic Pb–I bonding alongside pronouncedenvironmental reactivity. Pristine films exhibit a sharp absorptiononset near 770–780 nm and strong photoluminescence consistentwith a direct bandgap of ∼1.55 eV. Under ambient exposure,optical degradation is marked by hydrate-phase transitions, PbI2 formation, and defect-state emissions, underscoring the material’ssensitivity to moisture and oxygen. Temperature-dependent photoluminescencefurther reveals a tetragonal-to-orthorhombic transition below ∼160 K,accompanied by exciton localization and phonon-coupled broadening.Device prototyping with FTO/MAPbI3/Ag heterojunctions demonstratesdiode-like rectification, high photosensitivity (∼8.3), andmeasurable quantum efficiency, though photocurrent decay under continuousillumination reflects intrinsic photoinstability. Collectively, thesemultitechnique investigations establish the emulsion–demulsionroute as a viable pathway for MAPbI3 thin films in optoelectronicapplications, while emphasizing the critical need for encapsulation,compositional engineering, and interface passivation to achieve long-termoperational stability.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"4 6","pages":"1647–1660"},"PeriodicalIF":3.4,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148656332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Switchable Photoluminescence Properties of a 1,8-Naphthalimide Derivative via Polymorphism, Pseudopolymorphism, and Mechanochromism 1,8-萘酰亚胺衍生物的多态性、伪多态性和机械致色性的可切换光致发光性质

IF 3.4

ACS Applied Optical Materials Pub Date : 2026-06-26 Epub Date: 2026-06-11 DOI: 10.1021/acsaom.6c00172

Pranam Chakraborty, Kingsuk Mahata

引用次数: 0

Click Coupling on Anodic Niobia and Tantala Nanocolumns for Label-Free Biosensing 点击耦合阳极铌和钽纳米柱的无标签生物传感

IF 3.4

ACS Applied Optical Materials Pub Date : 2026-06-26 Epub Date: 2026-05-20 DOI: 10.1021/acsaom.6c00008

Bahdan Ranishenka, Aliaksandr Hoha, Alexander Poznyak, Dmitry Semenov, Vadim Shmanai

{"title":"Click Coupling on Anodic Niobia and Tantala Nanocolumns for Label-Free Biosensing","authors":"Bahdan Ranishenka, Aliaksandr Hoha, Alexander Poznyak, Dmitry Semenov, Vadim Shmanai","doi":"10.1021/acsaom.6c00008","DOIUrl":"10.1021/acsaom.6c00008","url":null,"abstract":"Efficientcovalent immobilization of biomolecules onthe surfaceof nanostructured materials while maintaining their functional propertiesis a key step in the creation of modern biosensor systems. Niobiaand tantala nanocolumns were fabricated by magnetron sputtering ofmetal targets together with Al on Si wafers, followed by anodizingand dissolution of the porous alumina template. The morphology ofthe nanocolumns was characterized using scanning electron microscopy,and the surface area enhancement factor was evaluated. The nanostructureswere covalently functionalized with clickable azide groups via (3-chloropropyl)trichlorosilane,followed by nucleophilic substitution. Surface functional group loadwas quantified via a Cu-catalyzed azide–alkyne cycloadditionwith a dimethoxytrityl (DMT)-substituted alkyne, followed by photometricdetection of the released DMT cation. The use of a high boiling pointhydrophobic solvent (o-dichlorobenzene, o-DCB) together with the extended surface area of the nanostructuresenabled convenient and reproducible measurements, providing a satisfactoryanalytical signal (A ≈ 0.2–0.3) fromsamples of about 1 cm2. Both niobia- and tantala-basednanocolumns exhibited comparable functionalization densities of ∼1nm–2, calculated with consideration of their geometricalparameters. The feasibility of refunctionalization with azide groupswas demonstrated. A biotin derivative bearing a DMT moiety was covalentlyconjugated to the nanocolumns. The surface load of biotin was quantified,and its biospecific activity was validated through binding of a streptavidin–peroxidaseconjugate. The applicability of anodic nanocolumns for the constructionof label-free biosensors was demonstrated by biospecific streptavidinadsorption, registered via reflectance spectra.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"4 6","pages":"1637–1646"},"PeriodicalIF":3.4,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148666544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward Rational Design of Reaction-Based Fluorescent Probes: A Reaction-Centric Perspective on Machine Learning in Chemical Sensing 面向基于反应的荧光探针的合理设计：化学传感中以反应为中心的机器学习视角

IF 3.4

ACS Applied Optical Materials Pub Date : 2026-06-26 Epub Date: 2026-06-04 DOI: 10.1021/acsaom.6c00241

Jintian Lyu, Jiamin Zhong, Nan Zhou, Kui Du

{"title":"Toward Rational Design of Reaction-Based Fluorescent Probes: A Reaction-Centric Perspective on Machine Learning in Chemical Sensing","authors":"Jintian Lyu, Jiamin Zhong, Nan Zhou, Kui Du","doi":"10.1021/acsaom.6c00241","DOIUrl":"10.1021/acsaom.6c00241","url":null,"abstract":"Machinelearning (ML) is increasingly effective for predictingphotophysical properties and accelerating the discovery of fluorescentmolecules. Yet, its impact on reaction-based fluorescent probe designremains limited. We argue that this limitation is not fully explainedby model accuracy alone but also reflects a structural mismatch betweenthe dominant learning paradigm and the actual sensing object. Mostcurrent approaches are molecule-centric, learning properties of isolatedmolecular states, whereas reaction-based probes are evaluated throughanalyte-triggered transformations between chemically linked states(P → P′). The key observables are therefore relationaland context-dependent, including Δλem, ΔΦ,response mode, dynamic range, and condition-dependent selectivity.When learning targets are defined only at the single-state level,these transformation-induced observables are learned only indirectly.Using an illustrative stress test on representative published probes,we show that seemingly acceptable end point predictions can stilllead to incorrect response-level conclusions. We therefore proposea reaction-centric perspective in which chemically defined transformations,together with mechanistic and assay context, are treated as the primarysupervision unit. Building on advances in fluorophore prediction,reaction representation learning, literature extraction, and constrainedgenerative modeling, we outline a practical roadmap centered on transformation-awaredata sets, response-level benchmarks, mechanism- and environment-awaremodels, and closed-loop validation. This perspective provides a morephysically grounded and decision-relevant foundation for rationaldesign of next-generation fluorescent probes.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"4 6","pages":"1550–1559"},"PeriodicalIF":3.4,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148624792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photoluminescence and Refractive Index Trimming of Stoichiometric Silicon Nitride by Silicon Implantation 化学计量氮化硅注入的光致发光及折射率调整

IF 3.4

ACS Applied Optical Materials Pub Date : 2026-06-26 Epub Date: 2026-06-09 DOI: 10.1021/acsaom.6c00171

Marçal Blasco-Solvas, Jad Sabek, Carlos Domínguez-Horna, Joaquin Faneca

引用次数: 0

Mechanosensitive Flexible Diffractive Gratings Based on Laser-Induced Periodic Surface Structures for Strain Sensor Applications 基于激光诱导周期表面结构的机械敏感柔性衍射光栅用于应变传感器

IF 3.4

ACS Applied Optical Materials Pub Date : 2026-06-26 Epub Date: 2026-05-25 DOI: 10.1021/acsaom.6c00180

Maksim D. Vasilev, Sergey V. Ershov, Mikhail K. Moskvin, Dmitry A. Sinev

引用次数: 0

Single-Entity Nanophosphor for Efficient Dual-Mode Luminescence by Tridoped Ln3+ Ions in a CaWO4 Host for Anticounterfeiting and Temperature-Sensing Applications 利用三掺杂Ln3+离子在CaWO4基质中实现高效双模发光的单实体纳米荧光粉，用于防伪和温度传感

IF 3.4

ACS Applied Optical Materials Pub Date : 2026-06-26 Epub Date: 2026-06-03 DOI: 10.1021/acsaom.6c00242

Kedukhro Khupfu, Nistha Singh, Sandeep K. Agarwalla, Naorem Shanta Singh, Raghumani Singh Ningthoujam

{"title":"Single-Entity Nanophosphor for Efficient Dual-Mode Luminescence by Tridoped Ln3+ Ions in a CaWO4 Host for Anticounterfeiting and Temperature-Sensing Applications","authors":"Kedukhro Khupfu, Nistha Singh, Sandeep K. Agarwalla, Naorem Shanta Singh, Raghumani Singh Ningthoujam","doi":"10.1021/acsaom.6c00242","DOIUrl":"10.1021/acsaom.6c00242","url":null,"abstract":"Multifunctional rare-earth-doped luminescent nanomaterialscapableof simultaneous spectral conversion and sensing are of significantinterest for advanced photonic applications. Herein, we report thesynthesis of efficient Eu3+-codoped CaWO4:Er3+, Yb3+ nanophosphors via a polyol method and demonstratetheir excitation-dependent multicolor emission, optical thermometry,and anticounterfeiting functionality. Under UV excitation, intenseEu3+-dominated red emission is achieved with an optimalEu3+ concentration of 4 atom %, while higher doping leadsto concentration quenching. Near-infrared (NIR) excitation at 980nm produces an efficient Er3+-based green upconversionemission, which is maximized in Eu3+-free sample, and itsgreen emission intensity decreases upon Eu3+ incorporation.The energy transfer efficiency and mechanism from the Er3+ excited states to the Eu3+ excited states are discussed.Lifetime measurements corroborate the emission behavior, yieldinga maximum lifetime for Eu3+ at 4 atom % Eu3+ (∼550 μs and ∼581 μs under 269 and 393nm excitation, respectively), and a lifetime of ∼97 μsfor Er3+ green emission under 980 nm excitation. Usingthermally coupled Er3+ energy levels, optical thermometryachieves a relative sensitivity of 1.22% K–1 at303 K, an absolute sensitivity of 1.15% K–1 at 393K, and a temperature resolution of ∼0.4 K near room temperature.The observed dual-mode red and green emissions under UV and NIR excitation,respectively, underscore the potential of these nanophosphors foroptical thermometry and anticounterfeiting-related applications.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"4 6","pages":"1903–1917"},"PeriodicalIF":3.4,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148666581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual Anion Sensing Enabled by Synergistic Radical Formation and Hydrogen Bonding in a Bisindolyl-NDI Probe 双吲哚- ndi探针中协同自由基形成和氢键实现双阴离子传感

IF 3.4

ACS Applied Optical Materials Pub Date : 2026-06-26 Epub Date: 2026-06-11 DOI: 10.1021/acsaom.5c00622

Rikitha S Fernandes, Nilanjan Dey

{"title":"Dual Anion Sensing Enabled by Synergistic Radical Formation and Hydrogen Bonding in a Bisindolyl-NDI Probe","authors":"Rikitha S Fernandes, Nilanjan Dey","doi":"10.1021/acsaom.5c00622","DOIUrl":"10.1021/acsaom.5c00622","url":null,"abstract":"Thesimultaneous detection of structurally diverse anions remainsa significant analytical challenge, particularly for strongly basicspecies such as fluoride (F–) and cyanide (CN–). Their comparable charge densities and strong hydrogen-bondingtendencies often lead to overlapping binding profiles and competinginteractions, complicating selective recognition. To address this,we designed an NDI-based bis(indolyl)methane derivative (probe 1) capable of dual anion detection. The probe enables differentiationbetween F– and CN– ions via distinctoptical signatures, providing insights into their underlying recognitionmechanisms. Upon the addition of CN– ions to theprobe solution (in DMSO), prominent absorption features correspondingto the NDI•– radical anion were observed,indicating an electron-transfer process. Similarly, F– ions also induced the formation of radical anion peaks but withcomparatively lower intensity, alongside spectral changes predominantlyarising from strong hydrogen-bonding interactions between the bisindolyl-NHand F– ions. These observations demonstrate thatwhile both H-bonding and electron-transfer processes contribute toanion recognition, H-bonding dominates in the case of F–, whereas electron transfer is the primary pathway for CN–. Time-course experiments showed that the interaction between probe 1 and the anions completed in ∼4 min, and the NDI•– radical remains stable at ambient conditions in DMSO. Furthermore, probe 1 demonstrated high sensitivitytoward CN–, with a limit of detection of 0.42 μM,well below the WHO permissible limit. To assess practical applicability,paper-based test strips impregnated with probe 1 werefabricated, enabling rapid, instrument-free, and visually distinguishablecolorimetric detection of both anions under ambient conditions.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"4 6","pages":"1607–1620"},"PeriodicalIF":3.4,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148624694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward High-Efficiency Near-Infrared LEDs through Fluorocytosine-Doped Tin–Lead Halide Perovskites 氟胞嘧啶掺杂锡铅卤化钙钛矿制备高效近红外led

IF 3.4

ACS Applied Optical Materials Pub Date : 2026-06-26 Epub Date: 2026-06-11 DOI: 10.1021/acsaom.6c00158

Thangaraji Vasudevan, Wen-Jian Jiang, Subaharini Ramalingam, Lung-Chien Chen

{"title":"Toward High-Efficiency Near-Infrared LEDs through Fluorocytosine-Doped Tin–Lead Halide Perovskites","authors":"Thangaraji Vasudevan, Wen-Jian Jiang, Subaharini Ramalingam, Lung-Chien Chen","doi":"10.1021/acsaom.6c00158","DOIUrl":"10.1021/acsaom.6c00158","url":null,"abstract":"Perovskite light-emitting diodes (Pev-LEDs) have attractedincreasinginterest due to their high quantum efficiency, excellent spectraltunability, and low-cost solution processability. In particular, near-infrared(NIR) emission beyond 900 nm is highly desirable for applicationsin biomedical imaging, night vision, and optical sensing; however,achieving high radiance and device stability at wavelengths above950 nm remains challenging. Mixed lead–tin halide perovskitesprovide an effective route to extend Pev-LEDs into the NIR region,yet their performance is often limited by poor film quality and nonradiativerecombination. Here, we systematically investigate the structural,optical, and electroluminescent properties of pure Pb-based FA0.6MA0.3Cs0.1PbI3 and mixedPb–Sn (FA0.6MA0.3Cs0.1Pb0.5Sn0.5I3) perovskites for NIR Pev-LEDs.While the mixed Pb–Sn device exhibits NIR emission with anexternal quantum efficiency (EQE) of 1.12%, the incorporation of 5-fluorocytosine(5-FC) significantly improves film crystallinity and morphology, leadingto enhanced carrier recombination. Consequently, the optimized devicedelivers an improved EQE of 1.60% with stable electroluminescencecentered at 1035 nm, highlighting the effectiveness of 5-FC in advancinghigh-performance Pb–Sn perovskite NIR LEDs.","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"4 6","pages":"1777–1786"},"PeriodicalIF":3.4,"publicationDate":"2026-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148672611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0