Journal of Luminescence最新文献_第6页

Phosphorescent iridium(III) complexes featuring Ir-S-C-S structures as chemosensors for selective recognition of Cu2+ ions

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-01-04 DOI: 10.1016/j.jlumin.2025.121066

Cheng-Hao Li, Shi-Sheng Zhao, Xiao-Xue Liu, Yi-Hao Zheng, Hong-Yi Liu, Hong-Yan Li

{"title":"Phosphorescent iridium(III) complexes featuring Ir-S-C-S structures as chemosensors for selective recognition of Cu2+ ions","authors":"Cheng-Hao Li, Shi-Sheng Zhao, Xiao-Xue Liu, Yi-Hao Zheng, Hong-Yi Liu, Hong-Yan Li","doi":"10.1016/j.jlumin.2025.121066","DOIUrl":"10.1016/j.jlumin.2025.121066","url":null,"abstract":"<div><div>A series of nine phosphorescence iridium(III) complexes <strong>Ir1</strong>–<strong>Ir9</strong> were investigated bearing 2-phenylpyridine and 1-phenylisoquinoline derivatives as cyclometalating ligands, along with morpholine sodium dithioformic and ethyl xanthogenate as ancillary ligands, forming Ir-S-C-S structures with iridium center. The emission peaks of these complexes are located at 508–643 nm, exhibiting green and red luminescence, with quantum efficiencies up to 0.69 in degassed acetonitrile solution. After adding Cu<sup>2+</sup> ions, the emission intensities of <strong>Ir4</strong>, <strong>Ir5</strong>, <strong>Ir7</strong> and <strong>Ir9</strong> were significantly enhanced, accompanied with the blue shift of emission peaks. Moreover, Cu<sup>2+</sup> induced enhancement of phosphorescence is not affected by the competitive anions and the detection limit was found out as low as 0.04 μM. The probable decomposition mechanism of these complexes with Cu<sup>2+</sup> ions were suggested based on the results of ESI-MS and DFT calculation.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"280 ","pages":"Article 121066"},"PeriodicalIF":3.3,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly fluorescent push-pull bis-coumarinyl sulfone: Synthesis, photophysical behavior, and solvatochromic response

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-01-03 DOI: 10.1016/j.jlumin.2025.121064

Abdulilah Dawoud Bani-Yaseen , Mohanad Shkoor , Vandana Thotathil , Elham G. Mohammad , Hanin Mehanna , Raed M. Al-Zoubi

{"title":"Highly fluorescent push-pull bis-coumarinyl sulfone: Synthesis, photophysical behavior, and solvatochromic response","authors":"Abdulilah Dawoud Bani-Yaseen , Mohanad Shkoor , Vandana Thotathil , Elham G. Mohammad , Hanin Mehanna , Raed M. Al-Zoubi","doi":"10.1016/j.jlumin.2025.121064","DOIUrl":"10.1016/j.jlumin.2025.121064","url":null,"abstract":"<div><div>In this work, 3,3′-sulfonylbis(7-(diethylamino)-2H-chromen-2-one), an effective fluorescent push-pull system, is synthesized and photophysically characterized. The donor-π–acceptor–π–donor (D–π–A–π–D) architecture of the push-pull system exhibits distinctive solvatochromic behavior that is controlled by the surrounding medium. The photophysical characteristics of the molecule were investigated in detail by means of computational and experimental techniques. A variety of solvents were used to record UV–Vis absorption and fluorescence spectra, which showed notable bathochromic alterations in response to increasing solvent polarity. The fluorescence quantum yield changed substantially with solvent polarity, indicating the maximum efficiency in nonpolar liquids. In order to forecast electronic transitions and improve the molecular shape, Density Functional Theory (DFT) and Time-Dependent Density Functional Theory (TD-DFT) simulations were used, offering insights into the ground and excited state behaviors. The study elucidates the relationship between solvent characteristics and the photophysical behavior of the bis-coumarinyl sulfone, offering valuable information for designing advanced fluorescent materials with adaptable photophysical properties.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"280 ","pages":"Article 121064"},"PeriodicalIF":3.3,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Consistency of simulated stress distribution with experimental mechanoluminescent intensity distribution facilitating stress visualization device design

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-01-03 DOI: 10.1016/j.jlumin.2024.121060

C.Y. Sun , W. Liu , X. Shi , G.H. Rao , J.T. Zhao

{"title":"Consistency of simulated stress distribution with experimental mechanoluminescent intensity distribution facilitating stress visualization device design","authors":"C.Y. Sun , W. Liu , X. Shi , G.H. Rao , J.T. Zhao","doi":"10.1016/j.jlumin.2024.121060","DOIUrl":"10.1016/j.jlumin.2024.121060","url":null,"abstract":"<div><div>Mechanoluminescent (ML) materials emit light in response to dynamic stress variations, making them promising candidates for applications in structural health monitoring. The development of mathematical models to predict spatial stress distributions and clarify the relationship between stress and luminescence intensity is essential for optimizing the practical use of ML materials. In this study, we established mathematical models. We performed numerical simulations to determine stress magnitudes and distributions along path points in cylindrical samples, both with and without a notch, under varying normal force loads (1000–5000 N). Experimental compression tests were conducted on ML cylinders fabricated from a composite consisting of ZnS: Cu<sup>2+</sup>, CaZnOS: Mn<sup>2+</sup>, and CaZnOS: Mn<sup>2+</sup>, Bi<sup>3+</sup> fluorescent powders embedded in epoxy resin. Luminescence intensity distributions along the path points of the notched and unnotched samples (2 mm wide and deep notches) were analyzed. The findings demonstrate a strong correlation between the simulated stress distributions and the experimentally observed luminescence intensity patterns. This approach provides a reliable framework for designing ML devices using numerical simulations, applicable to a wide range of ML materials with varying geometries or damage conditions.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"280 ","pages":"Article 121060"},"PeriodicalIF":3.3,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prospects of UV and blue laser emission from the 5D3 level in Tb3+:LiYF4

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-01-02 DOI: 10.1016/j.jlumin.2025.121061

Moritz Badtke, Sascha Kalusniak, Stefan Püschel, Hiroki Tanaka, Christian Kränkel

{"title":"Prospects of UV and blue laser emission from the 5D3 level in Tb3+:LiYF4","authors":"Moritz Badtke, Sascha Kalusniak, Stefan Püschel, Hiroki Tanaka, Christian Kränkel","doi":"10.1016/j.jlumin.2025.121061","DOIUrl":"10.1016/j.jlumin.2025.121061","url":null,"abstract":"<div><div>We present room-temperature spectroscopy of Tb<sup>3+</sup>:YLF crystals with different doping concentrations between 0.2 % and 15 % evaluating the potential for laser operation at 415 nm or 435 nm starting from the <sup>5</sup>D<sub>3</sub> level of Tb<sup>3+</sup>. Evaluation of the fluorescence decay curves by the Inokuti-Hirayama model yields a radiative lifetime of the <sup>5</sup>D<sub>3</sub> level of 2.53 ms. The shorter effective lifetime of a Tb<sup>3+</sup>(0.2 %):YLF sample of 2.1 ms indicates quenching of the <sup>5</sup>D<sub>3</sub> level by cross relaxation even at such low Tb<sup>3+</sup> doping concentrations. The ratio of the <sup>5</sup>D<sub>3</sub> and <sup>5</sup>D<sub>4</sub> fluorescence yields a branching ratio of the <sup>5</sup>D<sub>3</sub> → <sup>5</sup>D<sub>4</sub> transition of 0.45 in Tb<sup>3+</sup>:YLF, which allows to calculate the stimulated emission cross sections for the potential UV and blue laser transitions <sup>5</sup>D<sub>3</sub> → <sup>7</sup>F<sub><em>J</em></sub> to be on the order of 10<sup>−21</sup> cm<sup>2</sup> for the first time. In pump-probe measurements, we observe gain around 415 nm and 435 nm for an Tb<sup>3+</sup>(0.8 %):YLF sample, but no detrimental excited state absorption. However, room-temperature lasing is not achieved for up to 0.87 W of incident cw UV pump power. Our calculations find a Tb<sup>3+</sup> doping concentration of 1.7 % to yield an optimized product of doping ion density and quantum efficiency, which maximizes the possible single-pass gain to 1.4 % assuming typical laser parameters. This study thus paves the way for future UV to blue lasing of Tb<sup>3+</sup> starting from the <sup>5</sup>D<sub>3</sub> level with further optimized conditions.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"280 ","pages":"Article 121061"},"PeriodicalIF":3.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and application of carbon dots@cyanuric acid composites with aggregation-induced emission effect

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2025-01-02 DOI: 10.1016/j.jlumin.2025.121063

Jianxi Xie , Lianghua Zhou , Weihao Ye , Yan Zhang , Guangqi Hu , Xiaotang Liu

{"title":"Preparation and application of carbon dots@cyanuric acid composites with aggregation-induced emission effect","authors":"Jianxi Xie , Lianghua Zhou , Weihao Ye , Yan Zhang , Guangqi Hu , Xiaotang Liu","doi":"10.1016/j.jlumin.2025.121063","DOIUrl":"10.1016/j.jlumin.2025.121063","url":null,"abstract":"<div><div>Carbon dots (CDs) with aggregation-induced emission (AIE) effect can effectively solve the problem of weak fluorescence of solid CDs due to aggregation-caused quenching (ACQ) effect. A kind of carbon dots@cyanuric acid composites (CDs@CYA) with AIE effect was reported in this paper, which is prepared by one-step microwave-assisted method using low-toxicity and low-cost imidazole, urea and tartaric acid as precursors. The AIE effect of CDs@CYA is derived from the restriction of intramolecular motion of the imidazole and cyanuric acid (CYA) groups on the surface of CDs in the aggregation state and convert non-radiative energy into radiative energy, as is verified by control variable experiments. CDs@CYA aqueous solution was used in fluorescent anti-counterfeiting ink, light conversion film (LCF), fluorescent probe and biological imaging. CDs@CYA powder was encapsulated on the blue chip with red phosphor by epoxy resin to obtain a white light-emitting diode (LED) device with a color coordinate of (0.33, 0.28), a color temperature of 5558 K and a color rendering index of 76.4.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"280 ","pages":"Article 121063"},"PeriodicalIF":3.3,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143138250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strong coupling of emitters with surface plasmons in transmissive metal gratings for optically–pumped surface emitting lasers

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2024-12-27 DOI: 10.1016/j.jlumin.2024.121050

Yuying Wang, Zhijun Sun

{"title":"Strong coupling of emitters with surface plasmons in transmissive metal gratings for optically–pumped surface emitting lasers","authors":"Yuying Wang, Zhijun Sun","doi":"10.1016/j.jlumin.2024.121050","DOIUrl":"10.1016/j.jlumin.2024.121050","url":null,"abstract":"<div><div>Transmissive metal gratings can be used to develop chip–on surface emitting lasers based on coupling of surface plasmon (SPs) and molecular, ionic or nanomaterial emitters integrated with electrically–driven pumping sources. In this paper, we report a numerical study on role of strong coupling between the emitters and SP resonance (SPR) mode at the metal grating in their interactions and lasing. In the study, a four–level two–electron model is used for the emitters in finite–difference time–domain simulations. It is shown that the strong coupling can be achieved by increasing density of the emitters in gain medium adjacent to the metal grating. And, in the strong coupling condition, lasing of the emitters is observed above a threshold pumping level, demonstrating much narrower emission bandwidth and abruptly increased emission intensity. While, in the weak coupling condition, there is only spontaneous emission; and stimulated emission cannot be induced even when population inversion is achieved at high pumping levels. The results indicate that strong coupling of the emitters with the SPR mode is critically important in realization of plasmonic lasing.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"279 ","pages":"Article 121050"},"PeriodicalIF":3.3,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143145584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

1.53 μm on-chip gain characteristics of 980-nm-pumped Er3+-Yb3+ co-doped LiNbO3-on-insulator photonic wire

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2024-12-26 DOI: 10.1016/j.jlumin.2024.121051

Shu Li, Yu-Jing Yang, De-Long Zhang

{"title":"1.53 μm on-chip gain characteristics of 980-nm-pumped Er3+-Yb3+ co-doped LiNbO3-on-insulator photonic wire","authors":"Shu Li, Yu-Jing Yang, De-Long Zhang","doi":"10.1016/j.jlumin.2024.121051","DOIUrl":"10.1016/j.jlumin.2024.121051","url":null,"abstract":"<div><div>Based on eight-electronic-level model of Er<sup>3+</sup>-Yb<sup>3+</sup> system, steady-state rate equations and pump/signal propagation equations, we have studied 1.53 μm on-chip gain characteristics of 980-nm-pumped Er<sup>3+</sup>-Yb<sup>3+</sup> co-doped LiNbO<sub>3</sub> on insulator(Er:Yb:LNOI) photonic wire(PW). The model considers all possible transitions. We have studied impacts of PW length, pump power, input signal power, Er<sup>3+</sup> and Yb<sup>3+</sup> concentrations on the gain characteristics. The results are compared with those of conventional Ti<sup>4+</sup>-diffused Er<sup>3+</sup>/Yb<sup>3+</sup> co-doped LiNbO<sub>3</sub>(Ti:Er:Yb:LN) waveguide. The comparison shows that the Er:Yb:LNOI PW exhibits much superior gain performance than the conventional Ti:Er:Yb:LN waveguide, including as much as two orders larger maximal gain and two times larger saturation gain, two orders lower threshold pump power, and much stronger pump power and propagation distance dependences of signal gain due to ultra-compact mode field and large overlapping degree of Er<sup>3+</sup> population and mode field profiles of Er:Yb:LNOI PW. The role of Yb<sup>3+</sup> depends on both pump level and Yb<sup>3+</sup> concentration. In case of lower pump level and Yb<sup>3+</sup> concentration, the gain performance of Er:Yb:LNOI PW is slightly better than that of Er:LNOI PW. In case of higher pump level and/or Yb<sup>3+</sup> concentration, the Yb<sup>3+</sup> plays a negative role in 1.53 μm gain due to small difference of forward and backward energy transfer coefficients between Yb<sup>3+</sup> and Er<sup>3+</sup>. Based on slight gain exaltation in case of lower Yb<sup>3+</sup> concentration and pump level, we propose to incorporate Yb<sup>3+</sup> only at the end of PW to utilize residual pump power to achieve further amplification after maximal gain point.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"279 ","pages":"Article 121051"},"PeriodicalIF":3.3,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143144417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Decomposition of MAPbBr3 single crystals under electron beam irradiation

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2024-12-26 DOI: 10.1016/j.jlumin.2024.121049

Y.O. Kulanchikov , P.S. Vergeles , D.S. Saranin , A.R. Ishteev , D.S. Muratov , E.E. Yakimov , E.B. Yakimov , Aldo Di Carlo

{"title":"Decomposition of MAPbBr3 single crystals under electron beam irradiation","authors":"Y.O. Kulanchikov , P.S. Vergeles , D.S. Saranin , A.R. Ishteev , D.S. Muratov , E.E. Yakimov , E.B. Yakimov , Aldo Di Carlo","doi":"10.1016/j.jlumin.2024.121049","DOIUrl":"10.1016/j.jlumin.2024.121049","url":null,"abstract":"<div><div>Evolution of emission spectra of organic–inorganic hybrid halide perovskite CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> (MAPbBr<sub>3</sub>) single crystals due to low energy electron beam irradiation (LEEBI) has been studied using the cathodoluminescence (CL) spectroscopy. It is shown that this method can provide valuable information concerning the processes taking place under LEEBI. It is observed that LEEBI produces the essential changes in both the CL integral intensity and spectra. The emission bands, which energy increases with the irradiation dose, were observed that may indicate the formation of intermediate phases with a variable composition. It is shown that the damage rate of CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> due to LEEBI decreases with beam energy increasing, i.e. utilizing larger e-beam energy is preferable to slow down the decomposition process under the crystal characterization. The analyses of the results obtained shows that radiolysis is the most probable mechanism of MAPbBr<sub>3</sub> damage by electron beam.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"279 ","pages":"Article 121049"},"PeriodicalIF":3.3,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143145567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel red emitting phosphor CaSc2O4:Eu2+ for the warm white LEDs

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2024-12-26 DOI: 10.1016/j.jlumin.2024.121052

Xuping Han, Xiaoyi Ma, Jia Li, Chengrun Liu, Xiaoyan Yu, Zixuan Wang, Panlai Li, Xiaojie Li, Zhijun Wang

{"title":"A novel red emitting phosphor CaSc2O4:Eu2+ for the warm white LEDs","authors":"Xuping Han, Xiaoyi Ma, Jia Li, Chengrun Liu, Xiaoyan Yu, Zixuan Wang, Panlai Li, Xiaojie Li, Zhijun Wang","doi":"10.1016/j.jlumin.2024.121052","DOIUrl":"10.1016/j.jlumin.2024.121052","url":null,"abstract":"<div><div>A novel red emitting phosphor CaSc<sub>2</sub>O<sub>4</sub>:Eu<sup>2+</sup> (CSO:Eu<sup>2+</sup>) was synthesized using a high temperature solid-state method. The crystal structure, luminescent properties, temperature characteristics and quantum efficiency of CSO:Eu<sup>2+</sup> were detailed explored. Based on the crystal structure and refinement results of CaSc<sub>2</sub>O<sub>4</sub>, it has been confirmed that the Eu<sup>2+</sup> ions occupy the Sc atomic site of octahedral hexacoordination configuration. CSO:Eu<sup>2+</sup> can exhibit an broad emission with an peak at 656 nm and a full width at half maximum (FWHM) of 78 nm under the 460 nm excitation, and the internal quantum efficiency of CSO:Eu<sup>2+</sup> can reach 61.5 %. A white light emitting diodes (LEDs) presented a high color rendering index (CRI) of 96.8 and a correlated color temperature (CCT) of 3959 K, which was fabricated by combining a blue LED chip, the CSO:Eu<sup>2+</sup> red phosphor, the commercial Y<sub>3</sub>(Al, Lu)<sub>5</sub>O<sub>12</sub>:Ce<sup>3+</sup> yellow phosphor. Importantly, the colors of the goods appear more true and vivid under this white LED device compared to commercial white LEDs.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"279 ","pages":"Article 121052"},"PeriodicalIF":3.3,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143145568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient FRET in new co-doped Tb(tmhd)3-CdSe/ZnS quantum dots-poly (methyl methacrylate) polymer nanocomposites for optoelectronic and sensor applications

IF 3.3 3区物理与天体物理

Journal of Luminescence Pub Date : 2024-12-25 DOI: 10.1016/j.jlumin.2024.121047

Valiantsin Askirka , Vitali Stsiapura , Piotr Miluski

{"title":"Efficient FRET in new co-doped Tb(tmhd)3-CdSe/ZnS quantum dots-poly (methyl methacrylate) polymer nanocomposites for optoelectronic and sensor applications","authors":"Valiantsin Askirka , Vitali Stsiapura , Piotr Miluski","doi":"10.1016/j.jlumin.2024.121047","DOIUrl":"10.1016/j.jlumin.2024.121047","url":null,"abstract":"<div><div>Poly (methyl methacrylate) nanocomposites co-doped with terbium(III) and CdSe/ZnS quantum dots, used as FRET donors and acceptors, respectively, were fabricated by free radical polymerization process in combination with ultrasonic treatment. Time-resolved photoluminescence measurements revealed that the growth of CdSe/ZnS content in co-doped samples leads to a decrease in FRET donor emission lifetime. However, the decay kinetics of terbium(III) remains mono-exponential.</div><div>We found that an efficient excitation energy transfer takes place in the co-doped samples since the decrease in the donor emission lifetime was accompanied by a simultaneous increase in the photoluminescence decay lifetime of the FRET acceptor.</div><div>The designed samples demonstrate stability of their optical properties in time with significant energy transfer efficiency in the range of ∼11–19 %. The dependence of FRET efficiency versus the acceptor/donor concentrations ratio is substantially linear.The energy transfer process provides sensitization of long-living QD emission since the FRET rate is much slower than the emission decay rate of the QD itself. The properties of obtained composites show the perspectives in engineering sophisticated luminescent materials for photonics and optoelectronics applications.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"279 ","pages":"Article 121047"},"PeriodicalIF":3.3,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143145564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0