Article
Materials Science, Ceramics
Hanxiao Kong, Guang Jia, Huilin Li, Zhaoxin Meng, Ning Zhang, Cuimiao Zhang
Summary: A variety of Bi3+ and/or Eu3+ doped KBaYSi2O7 phosphors with different colors have been successfully synthesized. The Bi3+ doped phosphors show intense cyan emission or unique narrow deep blue emission, which can be used for WLEDs. By adjusting the doping concentrations of Bi3+ and Eu3+, the luminescence colors of KBaYSi2O7 can be tuned. The as-synthesized phosphors exhibit great potential for application in WLEDs and solid-state lighting.
CERAMICS INTERNATIONAL
(2023)
Article
Optics
Hayra do Prado Labaki, Fabio Jose Caixeta, Rogeria Rocha Goncalves
Summary: Wide multicolor tunable up-conversion emission and white light generation were achieved in Pr3+/Yb3+ co-doped yttrium tantalates prepared by a soft sol-gel method. The crystalline structure and concentration of dopants significantly influenced the photoluminescence properties, providing a broad color gamut and tunability.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Multidisciplinary
Menglin Chen, Can Liu, Yulong An, Yan Li, Yunwu Zheng, Hao Tian, Rui Shi, Xiahong He, Xu Lin
Summary: Red, green, and blue CDs were successfully prepared using gallic acid as the raw material through a solvothermal method. The distinct optical features of these CDs are determined by the differences in the size of their sp(2)-domains, which can be controlled by reaction solvents.
NANOSCALE ADVANCES
(2021)
Article
Nanoscience & Nanotechnology
Gerardo Saavedra Rodriguez, Raul Sanchez-Zeferino, Christian Chapa, Mario Enrique Alvarez Ramos
Summary: In this study, the tunability of ZnS quantum dots embedded in a silica matrix from blue to cold white light emission was achieved through simple heating treatments without the need for rare earth or heavy metal ion doping. The composition of the samples changed gradually as a result of the heating, leading to alterations in their optical properties. The thermal treatment not only allowed for easy tuning of the emission color, but also increased the stability of the samples for long-term use as emitting devices.
ACS APPLIED NANO MATERIALS
(2021)
Article
Multidisciplinary Sciences
Yuko Makita, Shigekatsu Suzuki, Keiji Fushimi, Setsuko Shimada, Aya Suehisa, Manami Hirata, Tomoko Kuriyama, Yukio Kurihara, Hidefumi Hamasaki, Emiko Okubo-Kurihara, Kazutoshi Yoshitake, Tsuyoshi Watanabe, Masaaki Sakuta, Takashi Gojobori, Tomoko Sakami, Rei Narikawa, Haruyo Yamaguchi, Masanobu Kawachi, Minami Matsui
Summary: Photoreceptors are crucial for various developmental stages from green algae to land plants, and blue light sensing is essential for adapting to marine environments. The discovery of a chimeric dual orange/far-red and blue light receptor in Pycnococcus provasolii sheds light on the mechanisms of light adaptation in marine organisms.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Laureen Moreaud, Janak Prasad, Serges Mazeres, Cecile Marcelot, Clothilde Comby-Zerbino, Rodolphe Antoine, Olivier Heintz, Erik Dujardin
Summary: This study reports a straightforward method for synthesizing red, green, blue and violet emitting AuNCs in pure ethylene glycol with the addition of aniline or indole. By using advanced microscopy, mass spectrometry, and spectroscopy techniques, different sizes of AuNCs were identified and found to emit pure white, blue, green, and violet luminescence. The AuNCs were made water soluble and stable while preserving their photo-physical characteristics by capping them with a thiopegylated ligand shell bearing a carboxylate, amine or biotin. These findings have potential applications in biolabeling, hyperspectral sensing, and display technology.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Analytical
Zixin Jin, Wei Sheng, Na Huang, Lishuai Ren, Meiyi Sun, Dongmei Bai, Shuo Wang, Ziwuzhen Wang, Xinshuang Tang, Tingting Ya
Summary: A fluorescence immunoassay was developed using multicolor upconversion nanoparticles and magnetic separation for simultaneous detection of aflatoxin B1, zearalenone, and ochratoxin A in cereal samples. Antibodies and antigens were conjugated to upconversion nanoparticles and magnetic polystyrene microspheres, respectively, to bind with the target mycotoxins. The assay achieved rapid, sensitive, accurate, and high-throughput quantification of the three mycotoxins in cereal samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Engineering, Environmental
Ruoyu Dai, Xipao Chen, Ning Ouyang, Yaoping Hu
Summary: This study synthesized carbon dots with different pH conditions that emit violet, green, and orange fluorescence. By incorporating these carbon dots with starch, the photoluminescence efficiency was enhanced and applied to fabricate multicolor light-emitting diodes for indoor illumination.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Yulong An, Xu Lin, Yuxi Zhou, Yan Li, Yunwu Zheng, Chunhua Wu, Kaimeng Xu, Xijuan Chai, Can Liu
Summary: Red, green, and blue carbon dots (RGB CDs) were successfully synthesized with stable optical properties and significant photoluminescence characteristics. A white fluorescent CD solution was prepared by mixing these multicolor fluorescent CDs in appropriate proportions.
Article
Chemistry, Multidisciplinary
Xiaokai Xu, Guangqi Hu, Luoqi Mo, Yadong Li, Haopeng Wei, Bingfu Lei, Xuejie Zhang, Chaofan Hu, Jianle Zhuang, Yingliang Liu
Summary: This article reports a solvated chromogenic carbon dots with luminescence exhibiting a regular redshift in various solvents, which is attributed to the linking of CD surfaces to solvents through hydrogen bonds, leading to different surface level states and energy resonance transfer efficiencies. CDs/B2O3 composite shows excellent fluorescence thermal stability and has the potential for manufacturing white-light-emitting devices with a high color rendering index, while the solvation effects of CDs have prospects in detecting water content in organic solvents. Additionally, CDs are applied in cell imaging and positioning, showing significant prospects in biological fields.
Article
Chemistry, Multidisciplinary
Lin Ai, Ziqi Song, Mingjun Nie, Jingkun Yu, Fukang Liu, Haoqiang Song, Biao Zhang, Geoffrey I. N. Waterhouse, Siyu Lu
Summary: Carbon dots (CDs) with color-tunable solid-state fluorescence (SSF) were obtained through surface ligand modulation, enabling emission wavelengths to be switched smoothly by altering conjugation ability. Three-dimensional printing was used to create a range of emissive objects, demonstrating the commercial potential for use in optical lamps.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Jiangnan Zhu, Liping Liu, Xuanying Chen, Xin Jin, Zhenye Qiu, Qiaochun Wang, Jianhua Su, Lifang Guo, Zhiyun Zhang
Summary: Organic solid luminescent materials with spectral tunability have great potential in the construction of stimulation-responsive smart materials. However, current methods face challenges in fluorescence performance or crystallized controllability. In this work, surface-cross-linked micelles (SCMs) were used to manipulate multicolor fluorescence in the solid state by encapsulating a dihydrophenazine-based fluorophore (DPAC).
ACS MATERIALS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
D. Y. Medina-Velazquez, L. Garces, B. Garces-Martinez, H. Perez-Caudillo, C. R. Garcia, J. Oliva
Summary: ZnO:Ca,Na nanoparticles were synthesized using a wet-chemical method, with Na-dopant concentration fixed at 16 mol% and Ca-dopant concentration at either 16 or 25 mol%. Triethanolamine (TEA) was used as a surfactant during synthesis. XRD and SEM analysis confirmed the hexagonal phase and grain-like morphology of the nanoparticles. Under 265 nm excitation, ZnO:Ca,Na nanoparticles synthesized with TEA emitted cool-white light, while those made without TEA exhibited intense orange-red/NIR emission bands. Under 365 nm excitation, both types of ZnO:Ca,Na nanoparticles emitted exclusively intense orange-red/NIR light, with the excitation wavelength determining the emission color from white to orange-red/NIR.
Article
Chemistry, Physical
Renping Cao, Yunfei Zheng, Ting Chen, Bang Lan, Lan Li, Qinghu Zhong, Shuijing Nie, Jing Wang
Summary: In this work, Ca3MgSi2O8:R (R = Dy3+, Eu3+, and Eu3+/Dy3+) phosphors were synthesized via high-temperature solid-state reaction method in air. The crystal phase, crystal structures, lifetimes, and luminescence properties of the phosphors were investigated. Ca3MgSi2O8:Eu3+ phosphor exhibited red-orange light under excitation at 394 nm, while Ca3MgSi2O8:Dy3+ phosphor emitted yellow-green light under excitation at 350 nm. The energy transfer from Dy3+ to Eu3+ ions in Ca3MgSi2O8:Eu3+, Dy3+ phosphor was confirmed, and the emission properties of the phosphor could be tuned by changing the excitation wavelength or the concentration proportion between Dy3+ and Eu3+ ions.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Optics
Zhou Wang, Shijie Zhu, Xinyi Shan, Zexing Yuan, Zeyuan Qian, Xinyi Lu, Yi Fu, Kui Tu, Hui Guan, Xugao Cui, Pengfei Tian
Summary: This study demonstrates the characteristics of RGB InGaN micro-LEDs and investigates the effects of temperature and current density on their display performance. The results show that changes in temperature and current density affect electrical characteristics, electroluminescence spectra, and power parameters, presenting challenges for practical applications. However, the RGB display maintains a relatively high and stable color gamut under varying temperature and current density.
Article
Nanoscience & Nanotechnology
Swapnil L. Sonawane, S. K. Asha
ACS APPLIED MATERIALS & INTERFACES
(2016)
Article
Polymer Science
Swapnil L. Sonawane, S. K. Asha
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
(2017)
Article
Nanoscience & Nanotechnology
Swapnil L. Sonawane, S. K. Asha
ACS APPLIED MATERIALS & INTERFACES
(2013)
Article
Chemistry, Multidisciplinary
Rodney A. Tigaa, Swapnil L. Sonawane
JOURNAL OF CHEMICAL EDUCATION
(2020)
Article
Polymer Science
Mo Yang, Swapnil L. Sonawane, Zachary A. Digby, Jin G. Park, Joseph B. Schlenoff
Summary: Various types of specific interactions, including hydrophobicity, supplement the major entropic driving forces responsible for liquid-liquid phase separations in mixtures of oppositely charged polyelectrolytes. This study focused on the effects of hydrophobicity on the stability, salt concentration, and properties of polyelectrolyte complexes (PECs). It was found that the length of alkane chains in the PECs influenced their stability, salt concentration, and properties, with longer chains leading to easier doping and lower critical salt concentration for dissolution.
Article
Chemistry, Multidisciplinary
Swapnil L. Sonawane, Vikas J. Patil, Rodney A. Tigaa
Summary: This study conducted an online chemical safety survey to assess the knowledge and attitudes towards chemical safety among chemistry students in India and the USA. The results revealed that while most students had received safety training, there were still deficiencies in their laboratory safety practices and identification of hazard symbols. The study also highlighted the significant role of institutional policies and educators in shaping student attitudes towards chemical safety and practices.
JOURNAL OF CHEMICAL EDUCATION
(2022)
Article
Materials Science, Multidisciplinary
Rachel L. Abbett, Rodney A. Tigaa, Swapnil L. Sonawane, Geoffrey F. Strouse, Joseph B. Schlenoff
Summary: The study compared hydrophobic and hydrophilic ultrathin polyelectrolyte films made using the multilayering technique as hosts for Eu-III tris(dipicolinate) complexes. It was found that the hydrophobic polyelectrolyte multilayer excluded water more efficiently, resulting in only slight decreases in emission intensity and lifetime when exposed to ambient humidity, while maintaining a high quantum yield of 48%.
ACS APPLIED POLYMER MATERIALS
(2021)
