ACS Applied Optical Materials最新文献

{"title":"Enhanced Photosensitivity and Surfactant Resistance in Nanopolymersome Membranes as a Function of Gold Nanoparticle Incorporation","authors":"Regina L. Salzer,&nbsp;Ajay N. Shah,&nbsp;Cory J. Trout,&nbsp;Abby R. Robinson,&nbsp;Sujay Ratna,&nbsp;Sean M. O’Malley and Julianne C. Griepenburg*,&nbsp;","doi":"10.1021/acsaom.4c0050310.1021/acsaom.4c00503","DOIUrl":"https://doi.org/10.1021/acsaom.4c00503https://doi.org/10.1021/acsaom.4c00503","url":null,"abstract":"<p >Polymersomes hold great promise as carrier vesicles for the encapsulation and delivery of cargo. Self-assembly of amphiphilic diblock copolymers into spherical vesicles result in two compartments for encapsulation: an aqueous lumen and a bilayer membrane. Herein, it is demonstrated that dodecanethiol-functionalized gold nanoparticles (AuNPs) can be loaded within the hydrophobic region of the bilayer membrane of polybutadiene-<i>b</i>-poly(ethylene oxide) nanopolymersomes as photosensitizers. This is shown to render vesicles responsive to picosecond pulsed irradiation at a wavelength congruent with the localized surface plasmon resonance of the gold nanoparticles. Membrane disruption is demonstrated to scale with laser pulse energy and shows a strong enhancement with nanoparticle incorporation even at the low end of the concentration range. Nanoparticle concentration is also shown to increase polymersome stability in the presence of nonionic surfactants such as polysorbate 20 and ionic surfactants such as sodium dodecyl sulfate. In addition, a comparative analysis is performed between dynamic light scattering and cryo-transmission electron microscopy vesicle size results whereby an inference is made between sample composition and analytical method.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 2","pages":"403–413 403–413"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507669","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}

{"title":"n-UV-Converted Enhanced Downshifting Blue Emission through Bi3+ Sensitization in Self-Activated LaNbO4 Phosphors for LEDs and High Broadband Quantum Cutting Efficiency for Solar Cell Applications","authors":"Sumit Modanwal,&nbsp;Abhishek Roy,&nbsp;Anita Rai,&nbsp;Kailash Narayan Uttam,&nbsp;Abhinav Pratap Singh,&nbsp;Satyabrata Jit,&nbsp;Hirdyesh Mishra* and Shyam Bahadur Rai*,&nbsp;","doi":"10.1021/acsaom.4c0046910.1021/acsaom.4c00469","DOIUrl":"https://doi.org/10.1021/acsaom.4c00469https://doi.org/10.1021/acsaom.4c00469","url":null,"abstract":"<p >This paper reports the downshifting (DS) and quantum cutting (QC) emissions in Bi³⁺-sensitized self-activated LaNbO₄ and LaNbO₄/Yb³⁺ phosphor materials. The Bi³⁺ and Yb³⁺ ion-doped/codoped phosphor materials were synthesized at 1473 K by a solid-state reaction method. The structural and optical characterization techniques have been carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), photoluminescence (PL), and lifetime measurements. LaNbO₄ gives intense blue emission in the 350–600 nm region, with the maximum in the violet-blue region at 418 nm on ultraviolet (UV) excitation. The PL emission intensity was found to increase on doping of the Bi³⁺ ion. It is found that at lower concentrations (≤0.08 mol %), Bi³⁺ behaves as a sensitizer; however, at higher concentrations (&gt;0.5 mol %), it acts as an activator by producing its own emission due to ³P₁ → ¹S₀ transition. The behavior of phosphors from low to high concentrations of Bi³⁺ has been investigated in detail by lifetime measurements and a suitable energy level diagram. The self-activated broad blue-emitting behavior of doped LaNbO₄:10Yb³⁺, xBi³⁺ has been used to produce strong QC near-infrared (NIR) emission on UV excitation (262 nm) at 0.08 (i.e., as a sensitizer) and at 2 mol % (as an activator) Bi³⁺ concentrations. The maximum broadband QC efficiency is found to be 148% in the LaNbO₄:0.08 Bi³⁺, 10Yb³⁺ phosphor at optimized Bi³⁺ and Yb³⁺ concentrations. We also investigated the QC emission at two distinct concentrations (0.08 and 2 mol %, i.e., sensitizer and activator, respectively) with varied Yb³⁺ concentrations from 0 to 13 mol % and compared with different other QC emitting phosphors. The LaNbO₄ host and Bi³⁺ ions (³P₁ level) both transfer energy to Yb³⁺ ions in two ways, and the two-step intense broadband quantum cutting would result in intense NIR emission. The NIR emission generated by this type of QC process can be used to enhance the efficiency of solar cells. The LaNbO₄:Bi³⁺ phosphor emits intense DS emission with high color purity (88.8%) in the blue region and therefore has been employed to produce an <i>n</i>-UV-converted strong blue source for light-emitting diode (LED) application.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 2","pages":"319–335 319–335"},"PeriodicalIF":0.0,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507589","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}

{"title":"Plasmonic Properties of Doped Metal Oxides Investigated through the Kubelka–Munk Formalism","authors":"Michaël Lobet*,&nbsp;Florian Gillissen,&nbsp;Nicolas De Moor,&nbsp;Jennifer Dewalque,&nbsp;Pierre Colson,&nbsp;Rudi Cloots,&nbsp;Anthony Maho and Luc Henrard,&nbsp;","doi":"10.1021/acsaom.4c0043210.1021/acsaom.4c00432","DOIUrl":"https://doi.org/10.1021/acsaom.4c00432https://doi.org/10.1021/acsaom.4c00432","url":null,"abstract":"<p >Materials with broadband tunable optical properties are looked for in smart windows applications. Doped metal oxides presenting dual-band visible (VIS)–near-infrared (NIR) electrochromic properties can be used for solving such a challenge, and their accurate optical characterization is therefore of prime importance. The Kubelka–Munk model is a state-of-the-art way to optically quantify the absorption properties of materials and is occasionally applied to plasmonic materials, even if great care should be taken to meet the formalism hypotheses. In the present work, Kubelka–Munk theory is discussed in the context of particles of indium–tin oxide and molybdenum–tungsten oxide formulations that are used as single-NIR and both-VIS/NIR active advanced electrochromic materials, respectively. An analytical model is derived for particles of much smaller dimensions than the incident wavelength and is experimentally verified. A dilution method is applied to verify the plasmonic characteristics of the particles. This study is key for the efficient characterization of the optical properties of metal oxides and plasmonic materials in general, from diffuse reflectance measurements.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 2","pages":"296–304 296–304"},"PeriodicalIF":0.0,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507857","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}

{"title":"Photorefractive Effects in Ferro- and Flexoelectric Liquid Crystal Blends Containing Photoconductive Chiral Dopants with Lactate and Hydroxybutyrate Structures","authors":"Maho Hirakawa,&nbsp;Atsushi Seki,&nbsp;Khoa Van Le,&nbsp;Yumiko Naka and Takeo Sasaki*,&nbsp;","doi":"10.1021/acsaom.4c0043410.1021/acsaom.4c00434","DOIUrl":"https://doi.org/10.1021/acsaom.4c00434https://doi.org/10.1021/acsaom.4c00434","url":null,"abstract":"<p >Photorefractive liquid crystal blends exhibiting the flexoelectric effect were prepared, and the photorefractive effect, dielectric properties, and optical properties of these materials were investigated. These blends comprised mixtures of smectic liquid crystals with chiral photoconductive compounds and an electron-trap reagent. Depending on the molecular structure of the chiral compound, these mixtures showed either only flexoelectricity or both flexoelectricity and ferroelectricity. The former mixtures exhibited a faster and larger photorefractive effect than the latter ones.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 2","pages":"284–295 284–295"},"PeriodicalIF":0.0,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsaom.4c00434","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Utilizing Near-Field Scanning Optical Microscopy Measurements to Probe Laser Crystallization and Reamorphization in Phase Change Sb2S3 Thin Films","authors":"Adrian Podpirka*,&nbsp;Cameron Gutgsell,&nbsp;Gabriella M. Hunt,&nbsp;Robert C. Bruce,&nbsp;David Shrekenhamer,&nbsp;Blake S. Simpkins and Ronald J. Warzoha,&nbsp;","doi":"10.1021/acsaom.4c0043710.1021/acsaom.4c00437","DOIUrl":"https://doi.org/10.1021/acsaom.4c00437https://doi.org/10.1021/acsaom.4c00437","url":null,"abstract":"<p >Phase change materials (PCMs) are seeing tremendous interest for their use in reconfigurable photonic devices. Understanding the volume of the phase change is critical to the construction of devices. In this work, we demonstrate the ability to crystallize and reamorphize Sb₂S₃ thin films using a 405 nm laser and nondestructively quantify partial volumetric crystallization with nanoscale resolution via near-field scanning optical microscopy (NSOM). We provide an analytical description of the NSOM measurements and correlate the results with a model of laser/Sb₂S₃ interactions that includes laser irradiance power, thermal transport, and phase change kinetics. The results demonstrate a relationship between computational modeling and physical device behavior, which is critical for the creation of phase change-based devices.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 2","pages":"305–312 305–312"},"PeriodicalIF":0.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507787","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}

{"title":"Independent Dual-Mode Humidity and Hydrogen Detection Using a Plasmonic-Photonic Hybrid Metasurface","authors":"Hongsen Zhao,&nbsp;Qiushun Zou*,&nbsp;Ang Xu and Xiang Shen,&nbsp;","doi":"10.1021/acsaom.4c0050610.1021/acsaom.4c00506","DOIUrl":"https://doi.org/10.1021/acsaom.4c00506https://doi.org/10.1021/acsaom.4c00506","url":null,"abstract":"<p >High-sensitivity multitype detections independent of the metadevices are essential in industrial process control, environmental monitoring, biomedical diagnosis, etc. Here, we report a plasmonic-photonic hybrid metasurface (PPHM), consisting of a poly(vinyl alcohol) (PVA) guided-mode resonator sandwiched between a top palladium (Pd) grating array and a bottom gold reflector, achieving dual-mode optical detections independent of humidity and hydrogen simultaneously. The humidity properties in hydrogen gas or air were determined by the guided mode from a dielectric resonator with the PVA gratings and a spacer. The volume expansion in a PVA layer at high humidity gives rise to the redshift of the guided mode for the PPHM. An RH sensitivity of 0.31 nm/RH was achieved with a humidity range of 30–80%. The hydrogen-sensing characteristics of a PPHM result from the phase change of palladium after hydrogen absorption, which then causes reflectivity variations. The relative reflection change of a PPHM was up to 1.12 as palladium gratings were fully hydrogenated. The results suggest that the PPHM is a promising platform for realizing multitype optical detections of humidity and hydrogen sensing.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 2","pages":"414–421 414–421"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507777","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}

{"title":"Artificial Light-Harvesting System with White Light Emission Based on Al3+ Regulation","authors":"Juan Zhang,&nbsp;Yuehua Liang,&nbsp;Jiuzhi Wei,&nbsp;Caiyuan Guo,&nbsp;Yanyan Li,&nbsp;Tingting Zhang,&nbsp;Enke Feng,&nbsp;Xinxian Ma* and Xinning Han*,&nbsp;","doi":"10.1021/acsaom.4c0048510.1021/acsaom.4c00485","DOIUrl":"https://doi.org/10.1021/acsaom.4c00485https://doi.org/10.1021/acsaom.4c00485","url":null,"abstract":"<p >Luminescence intensity of Schiff-base fluorescent molecule B is enhanced by coordination with Al³⁺. B–Al³⁺ can achieve energy transfer with acridine red by mimicking plant photosynthesis. When the ratio of B–Al³⁺ to acridine-red is 6:1, a strong white emission is observed. The color coordinates of the obtained B–Al³⁺/ acridine red light trapping system are (0.33, 0.29), which is considerably close to the pure white spot (0.33, 0.33) in the CIE chromatogram. Finally, we use poly(vinyl alcohol) as the carrier to prepare a gel writing material for information encryption and protection.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 2","pages":"358–363 358–363"},"PeriodicalIF":0.0,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507634","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}

{"title":"Host–Guest Cocrystal Enabling Efficient Electrochemiluminescence Based on Thermally Activated Delayed Fluorescence","authors":"Feng Zheng,&nbsp;Mingxin Liu,&nbsp;Yijiang Li*,&nbsp;Jinliu Wei,&nbsp;Xiaoping Chen,&nbsp;Jiancong Ni and Zhixiong Cai*,&nbsp;","doi":"10.1021/acsaom.4c0052710.1021/acsaom.4c00527","DOIUrl":"https://doi.org/10.1021/acsaom.4c00527https://doi.org/10.1021/acsaom.4c00527","url":null,"abstract":"<p >Thermally activated delayed fluorescence (TADF) materials have garnered significant attention for their capacity to augment electrochemiluminescence (ECL). In this work, three kind of host–guest cocrystals were prepared by incorporating dicyanobenzene (DCB) derivatives as acceptor guests within calix[3]acridan (C[3]A) as donor host. Notably, the ECL signals of C[3]A@o-DCB were significantly stronger than those of C[3]A@p-DCB and C[3]A@m-DCB, attributed to enhanced intermolecular charge transfer (ISCT). Mechanistic investigation, supported by DFT calculations, reveals that the physically separated yet spatially proximate D–A configuration promotes efficient ISCT, leading to enhanced ECL. This study provides insights in designing TADF host–guest cocrystals with favorable properties for ECL.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 2","pages":"240–247 240–247"},"PeriodicalIF":0.0,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507637","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}

{"title":"Achieving High Efficiency in Luminescent Solar Concentrators Using Polymer Stabilized Cholesteric Liquid Crystal","authors":"Vaibhav Sharma,&nbsp;Rakesh Suthar,&nbsp;Supravat Karak and Aloka Sinha*,&nbsp;","doi":"10.1021/acsaom.4c0041510.1021/acsaom.4c00415","DOIUrl":"https://doi.org/10.1021/acsaom.4c00415https://doi.org/10.1021/acsaom.4c00415","url":null,"abstract":"<p >Luminescent solar concentrators (LSCs) combined with photovoltaic cells are in high demand, and it is a very effective way to increase the efficiency of a commercially available silicon solar panel. This is a promising solution for building integrated photovoltaics (BIPV) and could be a highly important element of our daily life for solar energy harvesting. Despite having high potential, the optical efficiencies of the currently available LSCs are not very high. In this paper, we report a scattering-enhanced optical efficiency of an LSC by incorporating a polymer-stabilized cholesteric liquid crystal with a high fluorescence organic dye between the two glass substrates. In the waveguiding layer, the chiral nematic director of the liquid crystal exhibits a random orientation; hence, scattering is observed in the film. These scattering elements increase the probability of light absorption of the dye in the ultraviolet region and subsequently enhance the re-emission of the light in the visible region. Moreover, the material shows a large Stokes shift and a very low overlap between the absorption and emission spectra. We have achieved a high optical efficiency of 37%, along with a concentration factor of more than 4.5 for the fabricated LSC. A Monte Carlo simulation has been developed to calculate the efficiency of the proposed device theoretically, and it shows good agreement with the experimental results. These findings create opportunities for developing highly efficient LSC windows capable of generating power for BIPV applications.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 2","pages":"259–271 259–271"},"PeriodicalIF":0.0,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507693","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}

{"title":"Robust and Long-Lived Photochromic Textiles with Spiropyran Derivatives","authors":"Yilin Li,&nbsp;Fan Zhang*,&nbsp;Luyang Shen,&nbsp;Guodong Shen,&nbsp;Yijun Yao,&nbsp;Huijing Liu*,&nbsp;Qunna Xu and Jianzhong Ma,&nbsp;","doi":"10.1021/acsaom.4c0048810.1021/acsaom.4c00488","DOIUrl":"https://doi.org/10.1021/acsaom.4c00488https://doi.org/10.1021/acsaom.4c00488","url":null,"abstract":"<p >Photochromic materials have attracted growing interest because they have the capability to undergo reversible color changes upon irradiation with light. The light fatigue resistance of photochromic materials and its affinity to biomass-based substrates are two important factors limiting applications. So, achieving robust and long-lived photochromic property for practical applications still remains a challenge. Herein, we report a silylation spiropyran and universal pad dyeing processes to attain smart photochromic textiles. Our approach consists of a silane substitution of spiropyran, thus acting as a coating to graft onto cotton fabrics under the action of the silane coupling agent. SEM, EDS, and XPS results of photochromic cotton fabrics showed that the silicon hydroxyl groups on the silanized spiropyran were strongly connected with –OH on the fabrics, which improved the affinity and binding fastness of spiropyran on the cotton fabrics. Importantly, our strategy tackles other severe problems encountered when dyeing photochromic molecules, such as difficult direct dyeing and low switching speeds in solid materials. This study is helpful in enriching the spiropyran derivatives, improving the affinity between photochromic compounds and fibers, and realizing the long-life application of photochromic fabrics. Moreover, it has great application prospects in hydroxyl-containing substrates, such as color-changing glass and anticounterfeiting paper, and potential application values in intelligent decoration and erasable information storage.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 2","pages":"346–357 346–357"},"PeriodicalIF":0.0,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507636","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}