Review
Materials Science, Multidisciplinary
M. D. Mehare, Chaitali M. Mehare, H. C. Swart, S. J. Dhoble
Summary: Phosphor converted white light emitting diodes (w-LEDs) are gaining attention for their advantages including longer life, greater efficiency, compactness, reliability, low power consumption, and environmental friendliness. The quality of w-LEDs is influenced by phosphors, hence there is a focus on developing a high efficiency, chromatically stable, optimum color rendering index, and low associated color temperature single phase white light emitting phosphor. This review explores rare earth activated phosphors and their benefits for w-LEDs, as well as the energy transfer mechanism between sensitizer and activator doped with inorganic host phosphors to achieve color-tunable emission for w-LEDs.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Engineering, Environmental
Shanshan Wei, Bin Wang, Hongyuan Zhang, Chenzhao Wang, Shufeng Cui, Xiangyu Yin, Chunzhu Jiang, Guoying Sun
Summary: Amino acids are crucial in various physiological processes and the accurate monitoring of their metabolism remains a challenge. This study successfully synthesized multi-color emission carbon dots (CDs) that demonstrated bright and steady luminescence. These CDs exhibited low cytotoxicity and excellent multi-color cell imaging ability. Specifically, chiral red emissive CDs (R-L-CDs) were able to quickly identify specific amino acids in water and biological samples. The introduction of a smart phone color recognizer application improved the accuracy of visual detection. Overall, these findings have far-reaching prospects for the application of R-L-CDs as biosensors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Jeremy Cathalan, Mathieu Salaun, Pierre Gaffuri, Audrey Potdevin, Francois Reveret, Alain Ibanez, Genevieve Chadeyron, Isabelle Gautier-Luneau
Summary: This study focuses on the development of aluminum borate luminescent powders with broader and warmer emission. The synthesis process and conditions are adjusted to optimize the optical features. The resulting powders exhibit a wide and intense emission band, with tunable excitation wavelengths, making them potentially valuable for optical applications.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Rafat Rafiei Rad, Andres F. Gualdron-Reyes, Sofia Masi, Bahram Azizollah Ganji, Nima Taghavinia, Santi Gene-Marimon, Emilio Palomares, Ivan Mora-Sero
Summary: A simple method to prepare white light emissive diodes based on quantum dot (QD) colloidal solutions using mixed carbon QDs (CQDs) and CsPbI3 perovskite (PQDs) is reported in this work. The right combination generates emission across the entire visible spectrum upon ultraviolet excitation. The white light emission of the final films provides high and stable color rendering index of 92%, tuning the chromaticity coordinates of the emission through the applied voltage.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zhibin Wang, Naizhong Jiang, Menglong Liu, Ruidan Zhang, Feng Huang, Daqin Chen
Summary: This study demonstrates white CDs-LEDs with adjustable CCTs through the utilization of aggregation-induced emission, achieving white LEDs with different color temperatures. These LEDs exhibit excellent brightness and external quantum efficiency performance.
Article
Materials Science, Ceramics
Xiuyu Shen, Qian Hu, Yang Jin, Chen Shi, Mingqiao Ge
Summary: Tunable full-color luminescence is achieved by mixing rare-earth-doped SrAl2O4: Eu2+, Dy3+ (green emission), Y2O2S: Eu3+, Mg2+, Ti4+, Ti4+ 0.05 (red emission), and Sr2MgSi2O7: Eu2+, Dy3+ (blue emission) phosphors with different ratios. The phosphors exhibit white light and full-spectra emission under low excitation energy. The strategy enables enhanced encryption capacity of luminescent unit-based 3D codes with infinite emission colors.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Weiguo Chen, Lei Wang, Ruixiang Liu, Huaibin Shen, Jiangfeng Du, Fengjia Fan
Summary: By using a surfactant-free self-assembly method, red, green, and blue colloidal quantum dots are assembled into high-quality whispering-gallery-mode RGB lasers with close lasing thresholds. These lasers can lase independently even when closely integrated, and they can create an ultrawide color space with a gamut 105% of the BT.2020 standard. These strategies enable the demonstration of the first full-color liquid crystal displays using CQD lasers as the backlight source.
Article
Chemistry, Inorganic & Nuclear
Rui Sun, Xiang Wei, Huijuan Yu, Pengyun Chen, Haiyong Ni, Junhao Li, Jianbang Zhou, Qiuhong Zhang
Summary: A novel temperature-sensitive material, Sr3Y2Ge3O12:Bi3+,Sm3+ phosphor, was synthesized successfully by a solid-state reaction method. Under 376 nm light excitation, the prepared phosphor exhibits blue emissions from Bi3+ and orange red emissions from Sm3+ due to energy transfer. The temperature sensing performance of the phosphor was evaluated by measuring the fluorescence intensity ratio (FIR) of Sm(3+)versus Bi3+. Moreover, it was found that the sensitivities of Sr3Y2Ge3O12:Bi3+,Sm3+ could be tuned by changing the concentration of activators to determine the optimal temperature measurement conditions.
DALTON TRANSACTIONS
(2023)
Article
Engineering, Environmental
Qijun Li, Dengke Cheng, Hailing Gu, Daiqi Yang, Yuchen Li, Shuai Meng, Yunyang Zhao, Zikang Tang, YiBo Zhang, Jing Tan, Songnan Qu
Summary: Multi-color phosphorescence carbon dots (CDs) with fine-color tunable property ranging from green to NIR are obtained via regulating CDs contents in annealed boric acid (BA). The CDs aggregation degree is gradually increased by increasing the CDs contents in BA during thermal treatment, which leads to energy splitting and form low-energy aggregation states, resulting in phosphorescence continuously shifts in color. These CDs show potential applications in advanced anti-counterfeiting and information encryption.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yuanjing Wang, Changkai Yu, Yayun Zhou, Enhai Song, Hong Ming, Qinyuan Zhang
Summary: This study demonstrates a red phosphor with short fluorescence lifetime and temperature stability, which can avoid display tailing and color shift phenomena. Density functional theory calculations and luminescence kinetics were used to propose a modified thermal stability evaluation model.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Spectroscopy
Murat Erdem, Selim Burak Canturk, Gonul Eryurek
Summary: In this study, orthorhombic Yb3+/Er3+ co-doped La2Ti2O7 phosphors were successfully synthesized using the solid-state reaction method. The pump power and temperature dependencies of the phosphors were investigated for color tunability and optical thermometry. It was found that the pump power significantly affected the color coordinates of the phosphors, and a two-photon transition mechanism was proposed for the upconversion energy transfer process. The optical temperature sensor sensitivities were calculated using the fluorescence intensity ratio technique.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Inorganic & Nuclear
Hua Chen, Yan Gao, Pengfei Jiang, Rihong Cong, Tao Yang
Summary: A systematic study was conducted on Bi3+ and Eu3+ doped borates, revealing the presence of two sets of emission and excitation spectra upon Bi3+ doping, and maximal Eu3+ emission intensity at y = 0.50 under charge transfer excitation. The Bi3+-to-Eu3+ energy transfer was supported by the steady photoluminescence spectra and the decreased lifetime of Bi3+.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Demin Huang, Haiyan Qi, Jing Jing, Rokayya Sami, Tao Jing, Sultan J. Alsufyani, Nada Benajiba, Nawal Madkhali
Summary: Nitrogen-doped carbon dots (F-NCDs) were prepared through a one-step hydrothermal method, and the emission wavelength could be tuned by introducing new energy levels. The F-NCDs exhibited stability under illumination, ionic strength, and pH conditions, and showed specificity and sensitivity in ascorbic acid detection. With full-color emission features, the F-NCDs have great potential in fluorescent sensor detection.
Article
Chemistry, Inorganic & Nuclear
Pengxiang Pei, Pengbo DuanMu, Binbin Wang, Xuan Miao, Cheng Zhang, Weisheng Liu
Summary: The multicolor long persistent luminescence material NCGOF:Tb3+ can achieve color changes from blue to cyan and bright green by adjusting the concentration of Tb3+, with afterglow times ranging from 5.62 hours to 8.52 hours. Anticounterfeiting devices fabricated based on this material can be easily detected using a portable ultraviolet lamp and are impossible to counterfeit.
DALTON TRANSACTIONS
(2021)
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
Zhishan Zhou, Zhijian Song, Jinkun Liu, Bingfu Lei, Jianle Zhuang, Xuejie Zhang, Yingliang Liu, Chaofan Hu
Summary: Energy transfer is used to enhance room temperature phosphorescence in carbon dots by embedding pure phosphorescent CDs into afterglow matrixes. This strategy significantly prolongs emission intensity, phosphorescence lifetime, and emission time of CDs, providing a new design route for CD-based materials with long phosphorescence emission and high emission intensity.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Luoqi Mo, Hao Liu, Zhiming Liu, Xiaokai Xu, Bingfu Lei, Jianle Zhuang, Yingliang Liu, Chaofan Hu
Summary: This study achieved multicolor long afterglow in aqueous solution by incorporating phosphorescent CDs and fluorescent dyes into sub-20 nm monodispersed silica nanoparticles. The silica matrix stabilized triplet excitons of CDs and facilitated cascade Forster resonance energy transfer, enabling intensive multicolor long afterglow with adjustable wavelength and large Stokes shift. The study also designed time-resolved, color multiple information encryptions and achieved high signal-to-noise ratio in in vivo afterglow imaging, making in vivo bioimaging portable and inexpensive.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Juqing Li, Yanhong Fan, Tongtong Xuan, Haoran Zhang, Wei Li, Chaofan Hu, Jianle Zhuang, Ru-Shi Liu, Bingfu Lei, Yingliang Liu, Xuejie Zhang
Summary: All-inorganic CsPbBr3 perovskite quantum dots offer high quality, stability, and easy preparation, making them promising for breakthrough applications in the field of wide color gamut backlight displays.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Jiemin Qiu, Weihao Ye, Xiaokai Xu, Baoyan Guo, Ruizhe Wang, Chaofan Hu, Jianle Zhuang, Hanwu Dong, Guangqi Hu, Yingliang Liu
Summary: This study proposed a method to prepare UV absorbers by mineralizing CaCO3. Carbon dots with negative charge and rich functional groups were synthesized to induce the formation of CaCO3 with different morphologies and strong UV absorption properties. Mixing it with polyurethane improves the UV resistance and mechanical properties of the film.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Ping Liang, Yihao Zheng, Xingcai Zhang, Haopeng Wei, Xiaokai Xu, Xianfeng Yang, Huihong Lin, Chaofan Hu, Xuejie Zhang, Bingfu Lei, Wai-Yeung Wong, Yingliang Liu, Jianle Zhuang
Summary: A novel and universal strategy, called CDs-in-YOHF, is proposed to generate multicolor and long-wavelength RTP by confining various CDs in the YOHF matrix. The mechanism of the triplet emission of CDs is related to the space confinement, the formation of hydrogen bonds and C-F bonds, and the electron-withdrawing fluorine atoms. The resulting CDs@YOHF exhibits excellent photostability, thermostability, chemical stability, and temporal stability.
Article
Biochemistry & Molecular Biology
Min Zhong, Lingqi Yue, Wei Liu, Hongyi Qin, Bingfu Lei, Riming Huang, Xian Yang, Yunyan Kang
Summary: In this study, eight Put genes were identified in tomato, which were distributed on four chromosomes and classified into three groups. The Put genes showed similarity in protein domains and gene structure. They were induced by various hormones and polyamines and expressed in all tomato tissues. Most of the Put genes were induced by abiotic stresses. Put2 was found to be responsive to salt stress and overexpression of Put2 in yeast and tomatoes conferred salinity tolerance by enhancing polyamine uptake and antioxidant capacity. The findings suggest that Put2 plays a crucial role in polyamine metabolism and antioxidant defense in tomatoes, providing a valuable gene for salinity tolerance in plants.
Article
Engineering, Environmental
Jinkun Liu, Yimeng Luo, Zhun Ran, Fenglin Wang, Minhua Sun, Yangyang Luo, Jianle Zhuang, Xuejie Zhang, Bingfu Lei, Yingliang Liu, Chaofan Hu
Summary: In this study, a series of CDs@Al2O3 materials with broad emission wavelengths were successfully prepared using a simple method. The emission of the materials shifted from red to UV region as the reaction temperature increased. Additionally, the materials showed potential applications in anti-counterfeiting, information encryption, and fingerprint detection.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Weihao Ye, Jiemin Qiu, Zhiqiang Xu, Congcong Chen, Guangqi Hu, Chaofan Hu, Jianle Zhuang, Wei Li, Xuejie Zhang, Bingfu Lei, Yingliang Liu
Summary: In this study, carbon dots (CDs) were synthesized using a hydrothermal method and modified with sodium docusate to enhance their UV absorption properties. The resulting AOT-CDs showed strong absorption of UVA and UVB but remained transparent in the visible region. They also exhibited good chemical and thermal stability and are potential candidates for next-generation UV absorbents.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ping Liang, Yihao Zheng, Fengru Liu, Huaiyu Shao, Chaofan Hu, Bingfu Lei, Xuejie Zhang, Yingliang Liu, Jianle Zhuang, Xingcai Zhang
Summary: In this study, a new kind of carbon dot-based luminescent material was successfully synthesized and combined with a YF3 substrate to achieve multimode luminescence and high stability. This material exhibited blue fluorescence, green room-temperature phosphorescence, and upconversion luminescence under excitation of ultraviolet and near-infrared light. The stability of the material was greatly improved due to the strong protection of the YF3 substrate. This research provides a general synthesis strategy for achieving multimode luminescence and high stability of CD-based luminescent materials and opens up new opportunities for their applications in advanced anti-counterfeiting and information encryption.
Review
Chemistry, Multidisciplinary
Xiaoyan He, Yihao Zheng, Chaofan Hu, Bingfu Lei, Xingcai Zhang, Yingliang Liu, Jianle Zhuang
Summary: This article provides a detailed review of the recent advances in the application of carbon dots (CDs) embedded in various inorganic matrices (IMs), as well as a summary of the interaction and luminescence mechanisms between CDs and IMs. The synthetic strategies of constructing composites and the roles of IMs in facilitating the applications of CDs are emphasized. The article also proposes future research directions and challenges in this field.
MATERIALS HORIZONS
(2024)
Article
Agriculture, Multidisciplinary
Zhiwei Huang, Baoyan Guo, Yujie Zou, Jingyi He, Chaofan Hu, Jianle Zhuang, Yingliang Liu
Summary: Different types of citric acid-based carbon dots were synthesized and used for culturing Italian lettuce. They were found to promote the growth and enhance the nutrient qualities of lettuce, with Mg,N-CDs showing the best promotion effect.
ACS AGRICULTURAL SCIENCE & TECHNOLOGY
(2022)
Article
Horticulture
Jing Huang, Xinying Liu, Qichang Yang, Bingfu Lei, Yinjian Zheng, Zhonghua Bian, Sen Wang, Wei Li, Pengpeng Mao, Yaliang Xu
Summary: This study found that UVA-blue co-irradiation positively affected the growth and anthocyanin biosynthesis of pak choi, with the enhancement of anthocyanin synthesis reaching a peak at a UVA light strength of 10 mu mol·m(-2)·s(-)(1). In addition, there were variations in the expression patterns of MYB1 and PAP1 genes between different cultivars of pak choi.
Review
Chemistry, Multidisciplinary
Baoyan Guo, Guo Liu, Haopeng Wei, Jiemin Qiu, Jianle Zhuang, Xuejie Zhang, Mingtao Zheng, Wei Li, Haoran Zhang, Chaofan Hu, Bingfu Lei, Yingliang Liu
Summary: Fluorescent carbon dots (CDs) with excellent optical properties have great potential in improving crop photosynthesis and preservation, as well as being used in smart packaging and food safety detection.
Article
Materials Science, Multidisciplinary
Haopeng Wei, Yihao Zheng, Xingcai Zhang, Ping Liang, Xiaokai Xu, Chaofan Hu, Xuejie Zhang, Bingfu Lei, Yingliang Liu, Jianle Zhuang
Summary: A rapid construction strategy utilizing electrostatic interactions was developed to achieve the composite structure of NaYF4:Yb,Er and carbon dots (CDs). The resulting NaYF4:Yb,Er@CDs nanocomposites exhibit superior dual-mode luminescence properties, making them promising for advanced optical anti-counterfeiting applications.
MATERIALS ADVANCES
(2022)
Article
Materials Science, Multidisciplinary
Yanhong Fan, Juqing Li, Zhentong Lu, Haoran Zhang, Wei Li, Jianle Zhuang, Chaofan Hu, Yingliang Liu, Bingfu Lei, Xuejie Zhang
Summary: All-inorganic CsPbBr3 perovskite quantum dots (QDs) with high quantum efficiency and exceptional color purity have great potential in wide-color-gamut backlit displays. By introducing a network modifier, CaF2, high-quality CsPbBr3 QDs were regulated to be precipitated in borosilicate glass, which not only increases the internal and external quantum efficiency, but also provides a narrow bandwidth.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
