Article
Chemistry, Analytical
Xiaowei Mu, Minxing Wu, Bo Zhang, Xin Liu, Shaomei Xu, Yibing Huang, Xinghua Wang, Daqian Song, Pinyi Ma, Ying Sun
Summary: A fluorescent probe based on the combination of carbon dots and silver nanoparticles was developed for sensitive and selective detection of cysteamine. The probe showed a detection range of 2-16 μM with a detection limit of 0.35 μM, and high recovery rates in spiked bovine serum samples. Additionally, the probe had low cytotoxicity and was successfully used for in vivo imaging of HepG2 cells.
Article
Food Science & Technology
Shuang-Zi Luo, Jin-Yi Yang, Bao-Zhu Jia, Hong Wang, Zi-Jian Chen, Xiao-Qun Wei, Yu-Dong Shen, Hong-Tao Lei, Zhen-Lin Xu, Lin Luo
Summary: A multicolorimetric and fluorometric dual-readout immunosensor has been developed for accurate and convenient detection of histamine. The sensor shows high sensitivity and reliability, making it suitable for laboratory and on-site detection.
Article
Spectroscopy
Xueying Sheng, Shuangying Li, Yali Zhan, Jinghan Guo, Boyao Zhou, Jingyi Zhao, Zhi Li, Menghua Liu, Yanhui Li, Tongxu Qu, Qingxiang Zhou
Summary: A new kind of nitrogen-doped carbon dots were synthesized using humic acid and urea, which showed significant quenching of fluorescence in the presence of Cu2+ for constructing a selective sensor. The sensor exhibited good linearity and sensitivity for detecting Cu2+, with interference from other metal ions except Hg2+ which can be masked by sodium chloride. The prepared N-CDs showed strong fluorescence, high monodispersity, stability, and water solubility, suggesting great application prospects in environmental field.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Spectroscopy
Baraa R. Al-Hashimi, Khalid M. Omer, Heshu S. Rahman, Hemn H. Othman
Summary: A sensitive and selective inner filter effect sensing platform was designed to detect nitrofurantoin in pharmaceutical dosage form using nitrogen and phosphorus co-doped carbon nanodots. The prepared CNDs exhibited greenish fluorescence with high stability and sensitivity for pharmaceutical applications. The fluorometric assay successfully determined NIT in capsules with comparable results to a reference method, while sub-acute toxicity studies in mice showed no signs of toxicity related to CNDs consumption.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Nanoscience & Nanotechnology
Ruchi Aggarwal, Anjali Kumari Garg, Vishrant Kumar, Harshita Jonwal, Sonia Sethi, Srushti Gadiyaram, Sumit Kumar Sonkar, Amit Kumar Sonker, Gunnar Westman
Summary: A two-step viable synthetic approach for quick and energy-efficient acid-based charring is explained to produce self-passivated fluorescent water-soluble CD (wsCD) from sustainable microcrystalline cellulose (MCC) materials. The wsCD solution exhibits blue emission under UV-light and has a fluorescence quantum yield of approximately 6%. The wsCD are used for selective sensing of ofloxacin (OFLX) and have shown mild antifungal activity.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wenjing Chen, Jun Fan, Xianxue Wu, Dongbao Hu, Yunying Wu, Zhongmin Feng, Meiyun Yan, Xizhu Gao, Jianxin Xie
Summary: A facile one-step hydrothermal method was developed to synthesize nitrogen-doped carbon dots using pork liver, with a high quantum yield of 11.74%. The prepared N-CDs showed excitation and emission wavelengths of 329 and 410 nm, respectively, and were successfully applied for selective and sensitive determination of 6-TG in human serum with high recoveries.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Spectroscopy
Guo-Qi Zhang, Xu-Yan Zhang, Ya-Xiong Luo, Yong-Sheng Li, Yang Zhao, Xiu-Feng Gao
Summary: A novel ultrasensitive and rapid turn-on fluorescence sensor was developed for the determination of metformin hydrochloride (MET) in biological fluids. The sensor effectively reduces the consumption of expensive reagents and shows a linear correlation under optimal conditions with a low detection limit.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Applied
Ruiting Zhang, Liyuan Zhang, Runzhong Yu, Changyuan Wang
Summary: A highly sensitive fluorescent sensing system was established for the determination of methyl parathion based on carbon quantum dots nano-fluorescent probe prepared from corn stalks. The detection mechanism and reaction conditions were optimized, and the method showed high selectivity and sensitivity with a linear range of 0.005-14 mu g/mL. The application of the fluorescent sensing platform in rice samples resulted in satisfactory recoveries, with a detection limit of 1.22 mu g/kg.
Article
Materials Science, Multidisciplinary
Amit Ahlawat, Pawan S. Rana, Pratima R. Solanki
Summary: This study reported the photocatalytic degradation of RhB using microwave synthesized carbon quantum dots, confirming its ability to efficiently degrade RhB under UV light irradiation.
Article
Chemistry, Multidisciplinary
Zhiwen Li, Zhilin Zhou, Jianghua Wang, Qiyao Sun, Jiyue Zhang, Tingxian Tao, Yingqiang Fu
Summary: Rhodamine 6G (Rh 6G) was successfully modified on the surface of carbon quantum dots (CQDs) and resulted in Rh 6G-CQDs (R-CQDs) with distinct double emission peaks. The modification of Rh 6G on CQDs surface is more stable than simple mixing, leading to improved quantum yield of CQDs. The broader emission spectrum of R-CQDs allows for selective detection of doxorubicin (DOX) through inner filter effect (IFE) and fluorescence resonance energy transfer (FRET), with good linearity, high recovery, and low detection limit.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Fangfang Du, Yuan Gao, Xibo Zhang, Li-Li Wang
Summary: In this study, N,Bi-codoped CDs were synthesized and used to develop a highly selective and sensitive detection method for DOX. The Bi,N-CDs showed reduced emission and enhanced emission in the presence of DOX. A ratiometric fluorescence nanoprobe and a colorimetric method were established for DOX concentration detection.
Article
Chemistry, Analytical
Pengjuan Ni, Siyuan Liu, Yizhong Lu
Summary: The threat of glyphosate to food safety has been a topic of concern, leading to the development of a sensitive and accurate method for glyphosate detection. In this study, a turn-on fluorescent method using a PDA-PEI copolymer as a fluorescent probe and PNPP/ALP as a fluorescence quenching system was developed. The fluorescence of the copolymer depended on glyphosate concentrations, with a detection limit of 0.06μg/mL. Real samples were successfully analyzed using the standard addition method, with recoveries ranging from 88.8% to 107.0% and RSD less than 7.78%. This study provides valuable insights for glyphosate detection and expands the use of fluorescent copolymers.
Article
Chemistry, Applied
Fanyong Yan, Zhonghui Sun, Shiying Luo, Hao Zhang
Summary: In this study, fluorescent carbon dots with rich carboxyl groups on the surface were synthesized and further modified to improve stability and quantum yield. These modified carbon dots were used for the rapid and effective determination of BRH, with successful detection of BRH concentration and a low limit of detection achieved under specific conditions.
Article
Agriculture, Multidisciplinary
Wei Lan, Chengying Hai, Qiong Shi, Shuo Wang, Gaoqiong Deng, Hengye Chen, Youyou Wang, Jian Yang, Haiyan Fu
Summary: In this study, an inner filter effect-based fluorescence probe was developed for the rapid detection of ascorbic acid (AA). The probe consisting of nitrogen-doped carbon dots (NCDs) and cobalt oxyhydroxide nanoflakes (CoOOH NFs) showed a specific redox reaction with AA leading to the recovery of fluorescence. The probe demonstrated a linear relationship between the recovered fluorescence intensities and AA concentrations, and it has potential applications in both food and clinical testing.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
Article
Engineering, Electrical & Electronic
Pedro Conceicao, Joana F. B. Barata, Miguel A. Hernandez-Rodriguez, Paula S. S. Lacerda, Maria G. P. M. S. Neves, Lus D. Carlos, Tito Trindade
Summary: This work presents an example of luminescent ratiometric thermal sensor using 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin (TPFPP) and colloidal ZnS/AOT quantum dots (QDs). The nanoassemblies prepared based on the inner filter effect showed good temperature reversibility and a maximum relative thermal sensitivity of 0.95%°C-1 at 50°C.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Materials Science, Multidisciplinary
Yanbin Wang, Xinyou Huang, Ziqiu Cheng, Penghui Chen, Yuyang Chen, Junhao Ye, Haohong Chen, Zhenzhen Zhou, Denis Yu Kosyanov, Jiang Li
Summary: Uniform Al2O3-Ce:LuAG composite phosphor ceramics (CPCs) with excellent luminescent properties and thermal stability have been successfully synthesized in this study, showing great potential for application in solid-state laser lighting.
Article
Materials Science, Multidisciplinary
Syed Muhammad Ali Zaidi, Mazhar Ali Kalyar, Zulfiqar Ali Raza, Aayesha Shoukat, Rubaila Waseem, Muhammad Aslam
Summary: Polyvinyl alcohol (PVA) nanocomposite strips embedded with graphene nanosheets and copper-ferrite nanoparticles were synthesized using solution casting technique. Laser pulse irradiations were then applied to modify the structural, optical, and electrical properties of the strips, showing potential for optoelectronic devices.
Article
Materials Science, Multidisciplinary
Yunru Chen, Jialing Wu, Jiajia Wang, Shihui Ma, Hongwei Yu
Summary: This paper investigates the angular non-critical phase-matching second-harmonic-generation properties of Ba3(ZnB5O10)PO4 crystal and explores its potential applications in the output spectral regions.
Article
Materials Science, Multidisciplinary
Qun Jing, Menglin Zhu, Lu Li, Xu Ji, Haiming Duan, Henglei Chen, Ming-Hsien Lee
Summary: The paper introduces two new nonlinear optical materials, MZnPO4 (M = Rb, Cs), synthesized by cation substitution. These materials exhibit a honeycomb-like structure and show mild SHG responses with short absorption edges. The thermal properties, IR spectra, and theoretical calculations of the materials are also discussed.
Article
Materials Science, Multidisciplinary
Camila Ianhez-Pereira, Akhil Kuriakose, Ariano De Giovanni Rodrigues, Ana Luiza Costa Silva, Ottavia Jedrkiewicz, Monica Bollani, Marcio Peron Franco de Godoy
Summary: This study aims to evaluate the crystalline changes induced by ultrafast laser micromachining on manganese oxide thin films using micro-Raman spectroscopy. The results show that laser-writing is effective in locally modifying low-crystallinity films and increasing crystallite sizes, highlighting an interesting approach to evaluate laser-induced structural modifications on metal oxide thin films.
Article
Materials Science, Multidisciplinary
Kamal Bansal, Neeraj Kumar Mishra, Ibrahim Abdullahi, Param Jeet Singh, Mohit Tyagi, Sukhpal Singh
Summary: A novel Sm3+ activated oxyfluoride glass was synthesized and its structure and properties were analyzed. The glass showed potential applications in lasers, optical temperature sensing, and high-energy scintillators.
Article
Materials Science, Multidisciplinary
Xingjian Wang, Zhixu Wu, Jiawei Zhu, Yubin Kang, Mengqiang Cai, Yong Xia, Hui Deng
Summary: Antimony sulfide (Sb2S3) has been investigated as a promising material for visible light photodetectors due to its non-toxicity, stability, and high absorption coefficient. In this study, we systematically explored the impact of key parameters on the performance of Sb2S3 devices using simulation and successfully fabricated self-powered photodetectors with high responsivity and specific detectivity. Furthermore, we demonstrated the application of the Sb2S3 detector in a scanning imaging system, showcasing its potential for developing new types of visible light detectors and imaging systems.
Article
Materials Science, Multidisciplinary
O. I. Sallam, R. M. Ahmed
Summary: The 20NaF-60P2O5-20Na2O fluorophosphate glass systems doped with 3 wt% of CoO and NiO were investigated for their optical parameters before and after gamma irradiation. The presence of defects within the glass network and the addition of transition metals were found to affect the properties of the composites. After irradiation, a red shift was observed in the dissipation factor spectrum. The energy lost at the surface of the composites was larger than the energy lost within the constituent materials. All investigated composites showed insulating behavior and exhibited increased nonlinear optical parameters after irradiation, with the CoO-doped composite showing the highest values.
Article
Materials Science, Multidisciplinary
Fahimeh Ahmadi, Zeinab Ebrahimpour, Asghar Asgari, Bao Van
Summary: In this study, Er3+-doped sulfophosphate glasses containing titanium nanoparticles (TiO2 NPs) and different concentrations of silver nanoparticles (AgNPs) were synthesized. The impact of AgNPs on the physical and structural characteristics, optical absorption and emission features, and photocatalytic activity of the glasses were investigated. The results showed that the addition of AgNPs enhanced the emission intensity of the glasses, with the system containing 0.04 mol% of AgNPs exhibiting optimal performance. Furthermore, the presence of AgNPs and TiO2 NPs in the glass matrix positively affected the photocatalytic performance.
Article
Materials Science, Multidisciplinary
Zhuang Li, Rongfei Huang, Wei Yuan, Shaoqiang Zheng, Wenlu Liao, Huiying Xu, Zhiping Cai
Summary: This study reports the first realization of an 868 nm Pr:YLF laser pumped by an InGaN blue laser diode. The laser achieved a maximum power of 641 mW with stable output and good beam quality. The experimental results were in agreement with theoretical simulations.
Article
Materials Science, Multidisciplinary
Bhishma Karki, Youssef Trabelsi, Amrindra Pal, Sofyan A. Taya, Ram Bharos Yadav
Summary: This study proposes an SF11 Prism- Ag- ZnO nanowires-CeO2-Sensing layer-based surface plasmon resonance sensor for measuring dopamine concentration in human blood. The sensor demonstrates high sensitivity and detection accuracy, and holds significant importance for early diagnosis of neurological diseases.
Article
Materials Science, Multidisciplinary
M. Taoufiq, A. Soussi, A. Elfanaoui, A. Ait Hssi, S. Baoubih, A. Ihlal, K. Bouabid
Summary: In this study, the effect of copper doping within ZnS on glass substrates was investigated through experimental and theoretical approaches. Pure ZnS and Cu-doped ZnS films with varying copper concentrations were deposited on glass substrates using the SILAR technique. The structural, morphological, and optical properties of the films were characterized, and the theoretical FP-LAPW method based on density functional theory was employed to study the properties of copper-doped ZnS.