Article
Optics
Bingjun Zhu, Shiqi Ren, Yunlong Liu, Dong Zhang, Qingru Wang, Shuhong Li, Bing Yang, Wenjun Wang, Bingyuan Zhang
Summary: Cr3+/Mn2+ co-doped ZnAl2O4 phosphors with normal spinel structure were successfully synthesized. Mn2+ ions caused higher spinel inversion rate and positive effect on the luminescence of ZnAl2O4:Cr3+. Energy transfer from Mn2+ to Cr3+ was confirmed. The thermometer based on the fluorescence intensity ratio of Cr3+ showed potential application in optical thermometry.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Li Li, Xinji Li, Zhaojie Wu, Yongbin Hua, Xianju Zhou, Yongjie Wang, Zhongmin Cao, Sha Jiang, Guotao Xiang, Jae Su Yu
Summary: In this study, color tunable phosphors of Mn4+ and Tb3+ co-doped double-perovskite SrGdLiTeO6 (SGLT) were successfully synthesized and their crystal parameters and photoluminescence performances were investigated. By adjusting the doping ratio and temperature, the emission color of the phosphors could be tuned, and a wide temperature-range optical thermometry was developed.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Ceramics
Qianwen Wang, Xinmin Yu, Wuyunga Bao, Tong Wang, Hongbo Zhang, Chunhui Su
Summary: Tm2O3-Tb4O7-Sm2O3 tri-doped glass ceramics with eulytite-type structure were prepared by melt-annealing and crystallization. The crystallization can be controlled by adjusting the heat treatment temperature or time. XRD Rietveld analysis revealed the doping of rare earth ions into the Ba3Gd(PO4)3 lattice. The optical band gap values of the glass ceramics decreased significantly after heat treatment. Energy transfer from Tm3+ and Tb3+ to Sm3+ was confirmed by emission spectra and decay curves, and white light emission was achieved by adjusting the doping concentration of Sm2O3. The maximum relative sensitivity (Sr) was calculated to be 2.36% K-1 based on the temperature-dependent properties of the fluorescence intensity ratios of Sm3+/Tm3+ and Sm3+/Tb3+. The results suggest that Tm2O3-Tb4O7-Sm2O3 tri-doped glass ceramics can be potential materials for w-LEDs and optical temperature measurement.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Analytical
Guotao Xiang, Xiaotong Liu, Qing Xia, Xiuchong Liu, Su Xu, Sha Jiang, Xianju Zhou, Li Li, Dan Wu, Li Ma, Xiaojun Wang, Jiahua Zhang
Summary: An approximately monochromatic red upconversion emission was achieved in NaScF4: Yb3+/Er3+ nanoparticles by doping Mn2+ ions, which acted as bridges during the energy transfer process, leading to a significant acceleration of the red UC enhancement. The sample with 10% Mn2+ ions exhibited the strongest red luminescence and enabled ultrasensitive optical thermometry in the physiological temperature region.
Article
Materials Science, Multidisciplinary
Yingzhu Zi, Yangke Cun, Xue Bai, Zan Xu, Asif Ali Haider, Jianbei Qiu, Zhiguo Song, Anjun Huang, Jialun Zhu, Zhengwen Yang
Summary: Negative lattice expansion-induced upconversion luminescence (UCL) thermal enhancement has been used to solve the thermal quenching problem of lanthanide ions and combined with traditional fluorescence intensity ratio technology for temperature sensing. Transparent glass ceramics of Na2MoO4:Yb3+, Er3+ were fabricated with linear negative thermal expansion, resulting in thermal enhancement of UCL. By combining the UCL characteristics of positive thermal expansion tellurite glass matrix and negative thermal expansion Na2MoO4:Yb3+, Er3+ nanoparticles, a novel glass ceramic temperature sensor with high sensitivity was developed. The potential of Na2MoO4:Yb3+, Er3+ transparent glass ceramics as a new generation of temperature sensors was demonstrated through excellent repeatability in cycle measurements.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Xinyang Shi, Muhua Zhang, Xinyue Lu, Qinan Mao, Lang Pei, Hua Yu, Jian Zhang, Meijiao Liu, Jiasong Zhong
Summary: In this work, an efficient dual-emitting center optical thermometry based on Ca2Sb2O7:Bi3+, Eu3+ phosphor is designed and prepared. By modulating the ratio of Bi3+/Eu3+, the multicolor changes from blue to pink are realized. The fluorescence intensity ratio of Eu3+ to Bi3+ in Ca2Sb2O7 samples demonstrates excellent optical thermometry performance, with maximum absolute sensitivity (Sa) and relative sensitivity (Sr) reaching as high as 0.2773 K-1 and 2.37% K-1, respectively. The as-prepared phosphor materials also exhibit outstanding repeatability and reversibility, showing great potential in the field of non-contact optical temperature thermometry and thermochromic.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
Vaibhav Chauhan, Prashant Dixit, Prashant Kumar Pandey, Satyam Chaturvedi, Praveen C. Pandey
Summary: Luminescence thermometry using Dy3+/Ho3+-codoped SrMoO4 phosphor shows good relative sensitivity and minimal temperature uncertainty. The negative thermal quenching behavior of Dy3+ and Ho3+ in SrMoO4 is exploited for luminescence thermometry. The Ho3+-doped SrMoO4 also exhibits excellent thermal stability and resistance to color drift in lighting applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Su-Hua Yang, Shun-Ming Liao, Yi-Yan Tsai, Chia-Ho Wang, Chih-Chieh Ho
Summary: In this study, red carbon dot-incorporated ZnAl2O4:Eu3+ (CDs@ZAO:Eu3+) nanophosphors were synthesized using the sol-gel method, and CDs were prepared using green approaches with leaves and synthetic chemicals as sources. The incorporation of CDs in ZAO:Eu3+ improved the crystallinity by reducing the defects. A significant spectral overlap between CDs and ZAO:Eu3+ was observed. The luminescence intensity of CDs@ZAO:Eu3+ showed a 15.4% enhancement and a linear relationship with temperature, indicating its potential for non-contact optical thermometry applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Junhao Xing, Fei Shang, Guohua Chen
Summary: A novel Yb3+/Er3+ double doped glass ceramic material containing NaSrPO4 nanocrystals was synthesized and systematically studied for its up-conversion optical properties and temperature-sensitive performance. The material exhibited potential as optical temperature sensors based on its maximum relative sensitivity at 298 K and maximum absolute sensitivity at 573 K.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Anil Dogan, Murat Erdem
Summary: Three tellurite-zinc-barium-based glasses containing Yb3+ and Tm3+ ions with different compositions were fabricated, and their spectral and optical thermometry properties were investigated. The Yb3+/Tm3+: TZB glasses show promising potential for remote temperature sensing applications.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Materials Science, Multidisciplinary
Junhao Xing, Zhixin Gao, Ying Luo, Fei Shang, Guohua Chen
Summary: In this paper, Tb3+/Eu3+ co-doped P2O5-B2O3-ZnO-CaF2 glasses and glass ceramics were fabricated, and the structure, luminescence, and temperature sensing characteristics were studied. The crystal phase precipitated in the glass was identified as calcium Ca5(PO4)3F. The temperature sensing behavior in the range of 403-753 K was determined based on the fluorescence intensity ratio of the emission bands of Eu3+ and Tb3+. The glass and glass ceramics showed promising sensitivity for optical thermometry.
Article
Optics
Yang Jin, Lefu Mei, Qingfeng Guo, Libing Liao
Summary: Whitlockite-type phosphors with adjustable chemical compositions and rich crystal positions have been prepared and investigated. The phosphors exhibit blue, yellow, and red emissions due to the presence of Dy3+ and Eu3+ ions. The emission characteristics and temperature sensing performance of the phosphors have been studied, and they show potential applications in w-LEDs, display devices, and as optical thermometers.
JOURNAL OF LUMINESCENCE
(2023)
Article
Nanoscience & Nanotechnology
Claudia M. S. Calado, Diogo A. Galico, Muralee Murugesu
Summary: Composition control is a powerful tool for adjusting the optical outputs of high-performance lanthanide luminescent materials. Although commonly used in hierarchically structured nanoparticles, this strategy is seldom applied to molecular compounds due to the limited number of metal centers within a single unit. In this study, we investigate the composition control in a series of molecular cluster-aggregates with an icosanuclear core, aiming to adjust the optical output similarly to nanoparticles. Through exploring the impact of the addition of a third doping ion, we gain insights into the luminescent processes and qualitative trends in each molecular cluster-aggregate.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Claudia M. S. Calado, Diogo A. Galico, Muralee Murugesu
Summary: This work presents a study on molecular cluster-aggregates with a 20-metal core, exploring the use of composition control to modulate optical outputs. The impact of a third lanthanide ion on energy transfer and optical thermometry performance is investigated.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Applied
Fuwen Liu, Ying Tian, Degang Deng, Ming Wu, Bowen Chen, Liuyan Zhou, Shiqing Xu
Summary: A novel non-contact optical thermometer utilizing dual-emitting La5Si2BO13:Ce3+,Eu2+ phosphors shows high sensitivity and temperature resolution, particularly effective in low temperature region. The variational emissions of Ce3+ and Eu2+ can be converted to signals for temperature measurement.
JOURNAL OF RARE EARTHS
(2021)
Article
Spectroscopy
Zh. E. Ozbekova, A. A. Abdyldaev, A. A. Kulmyrzaev
Summary: This study compared two drying methods for cow and yak muscles, finding that freeze drying caused less discoloration. Additionally, analysis of fluorescence spectra allowed for accurate prediction of chemical composition and color characteristics of the muscles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Leo Mandic, Ivan Ljubic, Iva Dzeba
Summary: In this study, a combined experimental and computational approach was used to investigate the photoexcitation and photodegradation mechanisms of Doxazosin (DOX). The results provide valuable insights into the primary events following the photoexcitation of DOX and its potential applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiufeng Wang, Yao Jin, Wenhui Ai, Siqi Wang, Zhiqing Zhang, Ting Zhou, Fang Wang, Guodong Zhang
Summary: This study successfully synthesized near infrared fluorescence Ag2S quantum dots (QDs) and developed a dual-mode sensor for sulfide anion using the excellent oxidase-like characteristics of manganese dioxide (MnO2) nanosheets. The sensor showed a wider detection range, higher sensitivity, and shorter reaction time, making it suitable for highly selective detection of sulfide in different concentration ranges.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yafei Li, Yanming Ma, Chuantao Zheng, Di Yu, Lien Hu, Shuo Yang, Fang Song, Yadan Li, Shuanghai Liu, Zhanrui Zhang, Yu Zhang, Yiding Wang, Frank K. Tittel
Summary: To effectively monitor gas explosion and coal spontaneous combustion in coal mine, an intrinsically safe and explosion-proof dual-gas sensor system was developed for methane (CH4) and carbon monoxide (CO) measurement. The system achieved different measurement ranges using laser scanning and gas cells, and improved stability and accuracy through gas pre-treatment and temperature compensation algorithm.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Pei-Rong Chen, Li-Kang Chu
Summary: In this study, the hydrates of glyoxal were investigated using infrared absorption spectrometry. The results showed that at low concentrations, glyoxal mainly exists as monomeric dihydrate. These findings provide suitable detection windows for further research on the roles of glyoxal and its hydrates in atmospheric and aerosol chemistry, as well as the relevant reaction kinetics.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nichole O'Neill, Thamires A. Lima, Fabio Furlan Ferreira, Nicolas J. Alvarez, Reinhard Schweitzer-Stenner
Summary: This study determines the main fibril axis of GHG gel-forming fibrils using various techniques and compares the results with simulated data. The analysis suggests that the hydrophobic xz-surfaces of GHG fibrils could be a good target for the adsorption of hydrophobic drugs.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Mengyuan Liu, Hanchuang Zhu, Yikun Fang, Caiyun Liu, Xinke Li, Xiaohui Zhang, Lixue Ma, Kun Wang, Miaohui Yu, Wenlong Sheng, Baocun Zhu
Summary: ABHS is an efficient fluorescent probe that can accurately and sensitively detect Al3+ with strong resistance to interference. It also demonstrates excellent detection and imaging capabilities in complex real samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ahmed S. El-Shafie, Evana Rahman, Yasser Gadelhak, Rehab Mahmoud, Marwa El-Azary
Summary: The recycling of waste mandarin peels into biochar (MRBC) has been used as a high performance and cost-effective adsorbent for treating polluted wastewater effluents. Batch adsorption studies were conducted to analyze the adsorption competency of MRBC on two dyes, methylene blue (MB) and basic fuchsin (BF), either in individual solutions or binary combinations. The results showed that MRBC was capable of effectively removing a high percentage of both dyes. However, the adsorption capacity decreased when the dyes were combined. The cost estimation of MRBC production and wastewater treatment indicated that both were relatively low.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Anindita Bhatta, Jahnabi Upadhyaya, Dipak Chamlagai, Lincoln Dkhar, Pynskhemborlang T. Phanrang, Mohan Rao Kollipara, Sivaprasad Mitra
Summary: Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were synthesized and their photophysical properties were investigated. The synthesized coumarin compounds showed potential as therapeutic agents for Alzheimer's disease, inhibiting acetylcholinesterase activity. The presence of human serum albumin was found to affect the inhibition activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yongwei Duan, Quancheng Liu, Yiju Zhu, Qi Zhang, Xiaohui Duan, Hu Deng, Liping Shang
Summary: In this study, the phase transition of CL-20 was observed using terahertz spectroscopy, and quantum chemical calculations were employed to analyze the vibrations. The results indicated changes in the vibrations of CL-20 before and after phase transition.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuefeng Gao, Sai Xu, Baojiu Chen
Summary: This study synthesized Cs2NaInCl6 nanocrystals co-doped with Sb3+ and Tb3+ ions as probes for copper ions detection in lubricating oil. The introduction of Sb3+ effectively reduced the band gap of the host material and enabled energy transfer pathway for Tb3+ emission. The doped Tb3+ ions resulted in the suppression of emission due to electron transfer. The Cs2NaInCl6: 2.5 %Sb3+, 40 %Tb3+ NCs exhibited superior sensitivity and selectivity for copper ions detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yu Liu, Yue Zhang, Changyao Liu, Ce Wang, Baocai Xu, Li Zhao
Summary: A highly sensitive detection platform for heparin was developed using a cationic fluorescent dye (cresyl violet acetate) as a fluorescence probe. The platform demonstrated high selectivity towards heparin and achieved detection in both HEPES solution and serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lopamudra Roy, Nivedita Pan, Susmita Mondal, Ria Ghosh, Md. Nur Hasan, Neha Bhattacharyya, Soumendra Singh, Kallol Bhattacharyya, Arpita Chattopadhyay, Samir Kumar Pal
Summary: The study focuses on the interaction between reactive oxygen species (ROS) and a spectroscopic probe called Rose Bengal (RB), encapsulated in nanoscopic sodium dodecyl sulphate (SDS) micelles and entrapped in microscopic nylon 66 solid matrix. The research demonstrates efficient interaction between ROS and RB-SDS, and investigates the mechanism of hydroxyl radicals generation. Based on these findings, a prototype device utilizing RB embedded in a nylon thin film for quantification of ROS in extracellular fluids and food materials was developed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiaosong Sun, Qihao Cui, Wenyue Dong, Qian Duan, Teng Fei
Summary: Conjugated porous polymers (CPPs) are promising sensing materials and their application in aqueous media is limited. In this study, we synthesized CPPs with porous structure and prepared nanoparticles, enabling efficient photoluminescence sensing of nitroaromatic explosives in aqueous phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Maria Cristina Caggiani, Germana Barone, Paolo Mazzoleni
Summary: Raman spectroscopy is commonly used for studying glassy materials in cultural heritage, but it is more difficult to interpret the spectra and apply the technique with portable instruments. In contrast, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) can be used in archaeometric investigations as it is portable and non-invasive. However, there is limited application of this technique to historical glasses. This exploratory work demonstrates the potential of DRIFTS, in combination with portable X-ray Fluorescence (pXRF) and EDS microanalyses, for studying the composition and alteration of glass samples in cultural heritage.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)