Article
Chemistry, Analytical
Xiangying Sun, Wei He, Bin Liu
Summary: Water-soluble carbon dots/silica (CDs/SiO2) composites with an ultra-long lifetime and an ultra-high afterglow quantum yield were successfully obtained. The composites have exceptional stability and can be used in alkaline phosphatase detection, anti-counterfeiting ink, and multi-level information anti-counterfeiting and encryption.
ANALYTICAL METHODS
(2022)
Article
Chemistry, Applied
Ying Zeng, Xiangxiang Zhai, Guangming Wang, Yuming Su, Minjian Wu, Biaobing Wang, Kaka Zhang
Summary: Organic afterglow materials, featuring small rate constants of key photophysical processes, such as phosphorescence decay and nonradiative decay of triplet excited states, have become an important class of luminescent materials. The transformation of afterglow mechanism from room-temperature phosphorescence to thermally-activated delayed fluorescence in intramolecular charge transfer systems has been reported. This transformation is achieved by increasing the acceptor strength of the ICT molecules, reducing singlet-triplet splitting energy, and enabling reverse intersystem crossing pathway to harvest triplet energies. These findings provide deep understanding of the behaviors of organic triplets with small photophysical rate constants. In addition, these organic ICT molecules have shown promising applications when incorporated into aqueous emulsion systems.
Review
Chemistry, Multidisciplinary
Huixian Shi, Yang Wu, Jiahui Xu, Huifang Shi, Zhongfu An
Summary: Carbon dots (CDs) have emerged as a new generation of nano-luminescent materials and attracted extensive attention due to their excellent optical properties, wide source of raw materials, low toxicity, and good biocompatibility. However, systematic summaries on CDs with persistent luminescence are rare. This article provides a summary of recent progress on persistent luminescent CDs, including luminous mechanism, synthetic strategies, property regulation, and potential applications.
Article
Chemistry, Multidisciplinary
Xiaokun Zhang, Xiaolong Li, Zonghao Wang, Lulu Bai, Hongmei Qu, Songlin Xu
Summary: In this study, two simple donor-acceptor multifunctional pure organic light-emitting molecules (CzMP and PTZMP) with distinct aggregation-induced emission (AIE) properties were synthesized. CzMP displayed a long room temperature phosphorescence lifetime (>900 ms), while PTZMP exhibited triple emission of prompt fluorescence (PF), room temperature phosphorescence (RTP), and thermally activated delayed fluorescence (TADF). Additionally, CzMP showed dual-mode mechanochromic luminescence (MCL) in response to mechanical external forces and solvent fumigation, involving multiple fluorescence color shifts and phosphorescence switching. TDDFT calculations and single crystal analysis of CzMP were conducted to explain the different luminescence properties and reveal molecular stacking patterns and intermolecular interactions related to phosphorescence emission. The multifunctional luminescent properties of these emitters have potential applications in information encryption and anti-counterfeiting.
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
(2023)
Review
Chemistry, Physical
Zhun Ran, Jinkun Liu, Jianle Zhuang, Yingliang Liu, Chaofan Hu
Summary: Carbon dots, as emerging luminescent materials, have attracted researchers' attention. However, there is a lack of systematic analysis on the preparation strategy and luminescence mechanism of multicolor afterglow from carbon dots-based long afterglow materials. This review summarizes the preparation strategies and luminescence mechanisms, and discusses the challenges and future development directions in this field.
Article
Chemistry, Multidisciplinary
Jinyang Zhu, Junhua Hu, Qiang Hu, Xiaoyu Zhang, Elena Ushakova, Kaikai Liu, Shixun Wang, Xu Chen, Chongxin Shan, Andrey L. Rogach, Xue Bai
Summary: This study demonstrates the realization of white-light room-temperature long-lived afterglow emission from CD powder, with a synergy between the phosphorescence of the carbon core and the delayed fluorescence associated with surface C(sic)N moieties. By matching the singlet state of the surface groups of CDs with the long-lived triplet state of the carbon core, an efficient energy transfer is achieved.
Article
Engineering, Environmental
Qin Wang, Qiuxia Tan, Shaojing Zhao, Kui Zhang, Jianmin Chen, Minhuan Lan
Summary: In this study, carbon dots-based luminophore (CDs@LP) with blue fluorescence and ultra-long yellow room-temperature phosphorescence (RTP) was developed for ratiometric detection of oxytetracycline (OTC). The CDs@LP showed quenching of fluorescence and RTP upon addition of OTC, while the fluorescence of OTC steadily enhanced. Both fluorescence and RTP signals had excellent linear relationships with OTC concentration, and the CDs@LP exhibited low detection limits.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Renjie Chen, Yan Guan, Hailong Wang, Yan Zhu, Xin Tan, Ping Wang, Xueye Wang, Xinghe Fan, He-Lou Xie
Summary: In this study, a series of organic compounds with twisted electron donor-acceptor structures were successfully designed and synthesized, and then dissolved in MMA to realize single-molecular organic room-temperature phosphorescent materials with long lifetime. When grown into single crystals, multicolor-tunable afterglow was achieved at different delay times, showing promising applications in high-level anticounterfeiting.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Yaguang Wang, Qikun Sun, Lingtai Yue, Jie Ma, Shou Yuan, Danfeng Liu, Haichang Zhang, Shanfeng Xue, Wenjun Yang
Summary: This study successfully synthesized organic crystals with ultralong room-temperature white light emission, which exhibits non-discoloring white afterglow with high photoluminescence efficiency. The crystal can be excited at wide wavelengths and shows unique luminescent properties.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Justina Jovaisaite, Sven Kirschner, Steponas Raisys, Gediminas Kreiza, Paulius Baronas, Saulius Jursenas, Matthias Wagner
Summary: Organic ultralong room temperature phosphorescence is a unique phenomenon that has gained widespread attention due to its potential applications and fundamental interest. This study demonstrates the use of two derivatives as excellent afterglow materials for red and blue-green light emission, which is attributed to persistent thermally activated delayed fluorescence and RTP.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Kikuya Hayashi, Kei Fukasawa, Takashi Yamashita, Shuzo Hirata
Summary: In this study, we report a rational design of triplet sensitizers to achieve high-efficiency red afterglow emission at room temperature. By synthesizing sensitizer and acceptor molecules with different conjugated substituents, we found that the long conjugated substituent greatly enhanced the phosphorescence resonance energy transfer (PRET) from the sensitizer to the acceptor, resulting in improved yield of red afterglow emission at room temperature.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ru Liang, Lijun Huo, Ao Yu, Jinjing Wang, Chunman Jia, Jianwei Li
Summary: Researchers reported a microwave approach to prepare room temperature phosphorescent carbon dots (CDs) in a short time. The formation of carbon and boron bonds through microwave irradiation resulted in long afterglow properties. The materials showed significant phosphorescence under UV light and had a long phosphorescence lifetime. The glass state of the material contributed to the stabilization of its characteristics.
CHINESE CHEMICAL LETTERS
(2022)
Article
Engineering, Environmental
Kailu Zheng, Xuemei Yang, Fan Ni, Zhanxiang Chen, Cheng Zhong, Chuluo Yang
Summary: Current research on ultralong room-temperature phosphorescence (RTP) materials focuses on lifetimes and efficiencies, with a high demand for tuning emission colors. This study reports three ultralong RTP molecules with tunable emission colors through isomerization engineering, showing great potential for anti-counterfeiting applications in information security.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Xianhe Zhang, Kok Chan Chong, Zongliang Xie, Bin Liu
Summary: This study reports a strategy to prolong the lifetime of delayed fluorescence to approach that of phosphorescence by manipulating the charge transfer state and the reversed intersystem crossing process of a host-guest system. This enables durable white-light afterglow with great color tunability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Multidisciplinary
Xin Yang, Geoffrey I. N. Waterhouse, Siyu Lu, Jihong Yu
Summary: Afterglow materials with distinctive and long-lived optical emission properties have attracted widespread attention. Recent research has discovered many new afterglow materials with high photoluminescence quantum yields and long lifetimes. Organic-inorganic hybrid afterglow materials utilize the advantages of organic molecules and heavy atom dopants to achieve excellent performance and have the advantages of low manufacturing costs, diverse structures and optical properties.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Licheng Zheng, Kai Jiang, Jiaren Du, Yike Li, Zhongjun Li, Hengwei Lin
Summary: A facile strategy was developed to prepare color-controllable room-temperature phosphorescence (RTP) materials through the pyrolysis of a mixture containing 1-(2-hydroxyethyl)urea and boric acid. By controlling the pyrolysis temperatures, the resulting materials exhibited ultralong RTP with tunable emission colors. The study also revealed the formation of multiple luminescent centers, in-situ embedded in the B2O3 matrix, by the pyrolysis process, allowing for color-tunable RTP.
CHINESE CHEMICAL LETTERS
(2023)
Review
Chemistry, Multidisciplinary
Fang Wang, Xiaoyong Yue, Qi Ding, Hengwei Lin, Chuanlai Xu, Si Li
Summary: Chiral nanomaterials in biology are vital for maintaining various physiological processes and have potential applications in biosensing, drug delivery, early diagnosis, bio-imaging, and disease therapy. Chiral inorganic nanomaterials, with their unique properties, can be constructed similarly to natural chiral nanomaterials. This review summarizes the research on the bio-functions and bio-applications of chiral inorganic nanomaterials, including their construction methods, classification and properties, and highlights their potential in solving problems in living systems.
Article
Chemistry, Multidisciplinary
Tengyue Wang, Jiaren Du, Xiaomeng Wang, Kai Jiang, Panqin Wang, Shaoxing Lyu, Hengwei Lin
Summary: Rare earth-doped luminescent materials have wide applications in scientific research and practical use. The design of a single matrix containing multiple emitting centers is a trend in the development of luminescent materials. This study reports the design of a smart platform combining trivalent bismuth and lanthanides ions in a LuNbO4 matrix, which demonstrates multiple stimuli-responsiveness and color-tunability. The possible application of color-changeable indicators for information readouts is demonstrated, showing promise in various fields.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Ke Cheng, Henggang Wang, Shan Sun, Mingyu Wu, Hongzhe Shen, Ke Chen, Zhiyuan Zhang, Si Li, Hengwei Lin
Summary: This study develops a strategy for specific chemiluminescence (CL) imaging and enhanced photodynamic therapy (PDT) of bacterial infections using hemin-modified carbon dots (H-CDs). The H-CDs exhibit favorable water solubility, augmented photodynamic activity, and unique peroxidase-mimicking capacity. The H-CDs not only enable infection identification via CL imaging but also enhance bactericidal effects through oxygen self-supply and relief of hypoxia. This work provides an effective antibacterial platform for selective imaging-guided treatment of bacterial infections.
Article
Materials Science, Multidisciplinary
Yifan Song, Jiaren Du, Rujun Yang, Cunjian Lin, Wenjing Chen, Zishuang Wu, Hengwei Lin, Xi Chen, Yixi Zhuang, Rong-Jun Xie
Summary: Time-temperature indicator (TTI) technologies provide nondestructive and real-time quality management for perishable products, ensuring product safety. However, current TTI technologies have limitations in recyclability, sensitivity, and environmental tolerance. This study proposes a new TTI route based on the light storage effect in persistent luminescent (PersL) materials, showing excellent recyclability, reliability, and environmental stability. It highlights the potential of PersL phosphors in advanced TTI applications and next-generation biological detection technology.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jiaren Du, Shaoxing Lyu, Panqin Wang, Tengyue Wang, Hengwei Lin
Summary: This study reports a single-rare-earth-doped phosphor, Sr2YGaO5:Sm3+, with multi-responsive luminescence, which exhibits unique luminescent features under different excitation conditions. The multimode-responsive luminescence of Sr2YGaO5:Sm3+ is attributed to the superior optical integration of the host (Sr2YGaO5) and dopant (Sm3+) emissions under specific stimulation conditions. This study provides a novel concept for designing inorganic phosphor-based multifunctional optical materials and contributes to the development of smart platforms.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Xiaomeng Wang, Panqin Wang, Jiaping Zhang, Qianqian Ma, Qingpo Liu, Rik Van Deun, Hengwei Lin, Jiaren Du
Summary: Persistent luminescence (PersL) materials, such as MgGa2O4: Mn2+, have been successfully synthesized via a facile microwave-assisted solid state (MASS) method. This method allows for the preparation of multi-aperture cluster-like samples with smaller particle sizes, resulting in the unlocked PersL feature. The phosphors show promise for night vision and information storage applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Jiaren Du, Jiaping Zhang, Tengyue Wang, Pengshang Zhou, Lejia Cao, Qingpo Liu, Hengwei Lin
Summary: A highly bright inorganic phosphor with high initial afterglow brightness has been reported. The aggregation of charge carriers at shallow-trap energy levels contributes to the enhanced brightness. The findings have the potential to advance the development of high-brightness persistent luminescent materials for glow-in-the-dark applications.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Physical
Xiaomeng Wang, Jiaren Du, Hengwei Lin
Summary: Near-infrared persistent luminescence (NIR PersL) materials have great potential in night vision, biological imaging, and information encryption. This study investigates a series of Gd3MgxGexGa5-2xO12:Cr3+ materials prepared by microwave-assisted solid-state approach and demonstrates the improvement of PersL performance through chemical composition co-substitution. The study also reveals the trap level distribution of Gd3Mg0.5Ge0.5Ga4O12:Cr3+ phosphor and suggests that bandgap reduction and trap distribution optimization facilitate NIR PersL in Cr3+-doped gadolinium gallium garnets.
Article
Chemistry, Multidisciplinary
Panqin Wang, Jiaren Du, Tengyue Wang, Shaoxing Lyu, Rik Van Deun, Dirk Poelman, Hengwei Lin
Summary: This research overcomes the limitations of traditional methods for evaluating the inhomogeneity of thermal fields by developing a thermochromic smart material, SrGa12-xAlxO19:Dy3+. It allows flexible visualization of temperature inhomogeneities and exhibits abundant colors and amazing color-changing features. This thermo-responsive smart material can achieve highly efficient and simple visualization of invisible thermal distribution in industry and beyond.
MATERIALS HORIZONS
(2023)
Article
Materials Science, Multidisciplinary
Shaoxing Lyu, Pengshang Zhou, Jiaren Du, Xiaomeng Wang, Tengyue Wang, Panqin Wang, Henggang Wang, Shan Sun, Hengwei Lin
Summary: This study explores a novel near-infrared persistent phosphor, which can achieve tunable emission in deep-red and NIR regions by chemical unit co-substitution, with potential for wide applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Ang Feng, Jonas J. Joos, Jiaren Du, Philippe F. Smet
Summary: This study introduces a method for extracting trap depth distribution from thermoluminescence glow curves, which provides substantial improvement in precision and resolution compared with existing methods. This is a significant step forward in understanding the behavior of persistent and storage phosphors.
