Article
Chemistry, Multidisciplinary
Xian-Yin Dai, Man Huo, Xiaoyun Dong, Yu-Yang Hu, Yu Liu
Summary: A highly efficient noncovalent polymerization-activated near-infrared (NIR) emissive RTP system has been reported, which significantly enhances RTP emission intensity through stepwise confinement encapsulation and has been successfully applied for targeted near-infrared imaging of living tumor cells.
ADVANCED MATERIALS
(2022)
Article
Engineering, Environmental
Liuqi Kong, Yan Zhu, Shaochen Sun, Hongye Li, Shuo Dong, Fei Li, Farong Tao, Liping Wang, Guang Li
Summary: Polymer-based room temperature phosphorescence (RTP) materials have been developed with persistent multicolor and near-infrared (NIR) emission. These materials showed tunable multicolor afterglow and persistent luminescence in the NIR region, making them suitable for applications in multiple information encryption and multicolor displays.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Siyu Sun, Liangwei Ma, Jie Wang, Xiang Ma, He Tian
Summary: A set of metal-free room-temperature phosphorescence (RTP) systems were developed using brominated phenolsulfonephthaleine derivatives, which exhibited red light excitation and the highest phosphorescence quantum yield reported so far. The RTP emission could be controlled by adding acid and alkali alternately, and a logic operation with half-subtractor function and dual-channel response was constructed based on these properties.
NATIONAL SCIENCE REVIEW
(2022)
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
Shinji Iwakiri, Ryohei Hasegawa, Yuji Kubo
Summary: In this study, metal-free arylselanyl-BODIPY triplet photosensitizers were doped into a benzophenone matrix to achieve room-temperature phosphorescence emission in the near-infrared region. The phosphorescence properties of the material were tuned by derivatization of the selenium-containing BODIPY guests. Additionally, near-infrared room-temperature phosphorescence properties were detected upon excitation at 470 nm, and thermally activated delayed fluorescence was also observed.
Article
Chemistry, Multidisciplinary
Man Huo, Xian-Yin Dai, Yu Liu
Summary: A two-step sequential phosphorescence harvesting system with ultralarge Stokes shift and near-infrared emission is successfully constructed using racemic 1,2-diaminocyclohexan-derived 6-bromoisoquinoline, cucurbit[8]uril, and amphipathic sulfonatocalix[4]arene via cascaded assembly strategy. The system shows significant enhancement of phosphorescence emission intensity and can be used for NIR cell labeling.
Article
Chemistry, Physical
Enshan Liu, Tao Liang, Elena Ushakova, Bingzhe Wang, Bohan Zhang, Huiqun Zhou, Guichuan Xing, Chunming Wang, Zikang Tang, Songnan Qu, Andrey L. Rogach
Summary: Enhancing the absorption and emission of carbon dots in the deep-red/near-infrared range by suppressing nonradiative charge recombination via deprotonation of the CD surface allows for multilevel data encryption in the NIR region through humidity and temperature control on CD-ink stamped paper.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Qian Gao, Meichao Shi, Zequan Lu, Qiang Zhao, Gegu Chen, Jing Bian, Haisong Qi, Junli Ren, Baozhong Lu, Feng Peng
Summary: This study develops a facile strategy to prepare multicolor room-temperature phosphorescence (RTP) cellulose by anchoring arylboronic acid chromophores to cellulose chains using a heterogeneous BO covalent bonding approach. The afterglow colors of the cellulose can be tuned by increasing the degree of chromophore conjugation. Furthermore, a papermaking production line is built to produce multicolor RTP paper on a large scale. The RTP paper exhibits water sensitivity and can repeatedly respond to water/heat stimuli, making it suitable for various applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shan-Shan Zhang, Shana Havenridge, Chengkai Zhang, Zhi Wang, Lei Feng, Zhi-Yong Gao, Christine M. Aikens, Chen-Ho Tung, Di Sun
Summary: In this study, two super-tetrahedral silver nanoclusters with high photoluminescence quantum yield (PLQY) were constructed. The mechanism of achieving high PLQY was deciphered, and a core engineering strategy for controlled synthesis of silver nanoclusters with high PLQY was provided.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Toshikazu Ono, Kazuki Kimura, Megumi Ihara, Yuri Yamanaka, Miori Sasaki, Hirotoshi Mori, Yoshio Hisaeda
Summary: Room-temperature phosphorescence emitters in red to near-infrared region have gained attention, and a series of naphthalenediimide-halobenzoate-linked molecules were synthesized in this study, with one showing efficient RTP properties. Spectroscopic and X-ray diffraction analysis revealed that stacking modes and intermolecular charge-transfer complexes play a role in optical properties, while theoretical calculations indicated the importance of charge-transfer triplet states and halogen atoms' effect on the intersystem crossing between excited states.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Review
Chemistry, Multidisciplinary
Shengju Zhou, Feixiang Wang, Ning Feng, Aoxue Xu, Xiaofeng Sun, Jin Zhou, Hongguang Li
Summary: This review summarizes the important progress made in room temperature phosphorescence (RTP) carbon dots (CDs), including their synthetic strategies, performance regulation, and potential applications in anti-counterfeiting, information encryption, sensing, light-emitting diodes, and biomedicine. The remaining major challenges for RTP CDs are discussed and new opportunities in the future are proposed.
Review
Chemistry, Multidisciplinary
Kaiti Wang, Lunjun Qu, Chaolong Yang
Summary: As a type of room temperature phosphorescence (RTP) material, carbon dots (CDs) have short lifetime and low phosphorescence efficiency. Various strategies have been developed to improve these disadvantages, including embedding in rigid matrix, introducing heteroatom, and crosslink-enhanced emission. Doping CDs into different matrices is the main method for preparing long-lived CDs-based RTP materials. However, matrix-free CDs and carbonized polymer dots-based RTP materials have also been widely explored. The recent progress, efficient strategies, and emission mechanisms of CDs-based RTP materials are summarized and reviewed in detail. These materials show great application potential in anti-counterfeiting, data encryption, and biological monitoring due to their excellent chemical stability, photostability, and low biological toxicity.
Article
Chemistry, Applied
Dan Hong, Xian-yue Xiang, Qiu-ju Zhou, Yu-Lin Zhu, Yong-ping Wu, Jun Yang, Shi-hong Chen, Ke-jun Tan
Summary: In this study, multi-emission carbon dots (M-CDs) with three emissions were synthesized and their luminescence mechanism was investigated in detail. The high-concentration M-CDs showed emissions at 423 nm and 586 nm, while the emission at 493 nm was mainly due to self-absorption. On the other hand, low-concentration M-CDs only had emissions at 423 nm and 586 nm. Solid CDs (S-CDs) with solid-state room temperature phosphorescence (RTP) were also obtained, and their mechanism was found to be related to the presence of NaHCO3 acting as an oxygen barrier. The M-CDs were successfully used for detecting Morin, while the S-CDs were applied for optical anti-counterfeiting purposes.
Article
Chemistry, Multidisciplinary
Man Huo, Xian-Yin Dai, Yu Liu
Summary: An ultrahigh supramolecular cascaded phosphorescence-capturing aggregate was constructed by multivalent co-assembly of CB[7] and SC4AD, showing efficient phosphorescence energy transfer and functioning as an imaging agent for multicolor cell labeling.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Jinming Song, Yuhang Zhou, Zhichao Pan, Ying Hu, Zhenyi He, He Tian, Xiang Ma
Summary: In this study, we have developed a series of single-component molecules crystals called dialkyl 4,40-oxalyldibenzoate (n-BZ) that exhibit efficient room temperature phosphorescence (RTP) emission, multilevel stimuli responsiveness, and elasticity or flexibility. We found that grinding or thermal annealing of crystalline n-BZ can induce a transition from single emission RTP to dual emission RTP, with a significant change in emission color. Additionally, we have achieved the largest RTP quantum yield ever recorded for organic RTP elastic crystals. Through experiments and theoretical calculations, we have determined that the multilevel stimuli responsiveness of n-BZ originates from the conformational transition of its excited state, while its elasticity is derived from weak intermolecular interactions. These findings provide a valuable molecular design and construction strategy for developing organic stimuli-responsive RTP materials.
Article
Chemistry, Analytical
Xu Chen, Jianliang Bai, Guojun Yuan, Lu Zhang, Lili Ren
Summary: A novel nitrogen-doped carbon dots nanosensor for detecting Ag+ and GSH has been designed, with Ag+ significantly enhancing the fluorescence intensity of the N-CDs while GSH can restore it. This sensor not only detects Ag+ but also can be applied for cellular imaging.
MICROCHEMICAL JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Jianliang Bai, Xu Chen, Guojun Yuan, Lu Zhang, Zhujun Huang, Lili Ren
Summary: Fluorescent carbon dots have recently gained attention as a new type of zero-dimensional material. Dual-emission nitrogen-doped carbon dots synthesized using p-phenylenediamine and triethylamine as carbon and nitrogen sources exhibit blue and orange fluorescence under UV light, and can be used as ratiometric fluorescent probes for dopamine detection. The fluorescence quenching of N-CDs shows a good linear relationship with dopamine concentration.
Article
Chemistry, Physical
Guojun Yuan, Jianliang Bai, Lu Zhang, Xu Chen, Lili Ren
Summary: Anion defects are used to regulate active sites in electrocatalysis, with a study showing that phosphate formation by filling phosphorus vacancies is crucial for catalyst activity. CoP with appropriate phosphorus vacancies demonstrates excellent oxygen evolution reaction performance, while excessive vacancies hinder catalytic activity by affecting active center production. This research provides valuable insights for designing OER catalysts with anion vacancy defects.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Jianliang Bai, Guojun Yuan, Zhujun Huang, Lu Zhang, Yaqing Zhu, Xinyu Wang, Lili Ren
Summary: By synthesizing CDs through hydrogen bonding self-assembly, the fluorescence emission can be easily regulated, leading to breakthroughs in solid-state luminescence, proposing a new solid-state luminescence mechanism, and developing new CDs composites with dual-mode fluorescence emissions.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Yaqing Zhu, Jianliang Bai, Zhujun Huang, Shuang Wu, Xinyu Wang, Guojun Yuan, Lu Zhang, Lili Ren
Summary: Red emission carbon nanodots (CNDs) have great potential in bioimaging due to their low-toxicity and good compatibility. However, preparing red photoluminescence CNDs is challenging. By introducing specific precursor structures, the red emission was successfully achieved.
Article
Chemistry, Multidisciplinary
Jianliang Bai, Xinyu Wang, Yaqing Zhu, Guojun Yuan, Shuang Wu, Fu Qin, Xu Yu, Lili Ren
Summary: Three types of carbonized polymer dots (CPDs) were synthesized via a one-pot process using o-phenylenediamine (OPD), m-phenylenediamine (MPD), and p-phenylenediamine (PPD), displaying excitation-wavelength independent yellow, green, and red emissions, respectively. In contrast, two types of CPDs prepared via a hydrothermal process using citric acid (CA) and diethylenetriamine (DETA) showed noticeable excitation-wavelength dependent emissions. By characterizing and comparing the two types of CPDs, it was revealed that the polymer structure types during CPD formation can effectively control the dependence/independence of fluorescence excitation-wavelength. Homogeneous polymer structures in CPDs contribute to excitation-wavelength independence, while random copolymer structures contribute to excitation-wavelength dependence. These studies are significantly important for understanding polymer structures and designing unique optical properties of CPDs.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Physical
Xinyu Wang, Guojun Yuan, Jianliang Bai, Lu Zhang, Yaqing Zhu, Shuang Wu, Lili Ren
Summary: Trace Fe doping was introduced into Ni2P to design an efficient electrocatalyst for oxygen evolution reaction (OER) in electrochemical water splitting for hydrogen production. The crystal structure and surface chemical state analysis confirmed the successful formation of the Fe-doped Ni2P catalyst and its improved kinetics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Shuang Wu, Xinyu Wang, Jianliang Bai, Yaqing Zhu, Xu Yu, Fu Qin, Pinyi He, Lili Ren
Summary: Cobalt phosphides modified by nitrogen-doped carbon quantum dots were successfully synthesized via a simple and low-cost hydrothermal process. These catalysts exhibit abundant structural defects and favorable bond formation and electron conduction.
Article
Optics
Pinyi He, Yaqing Zhu, Jianliang Bai, Fu Qin, Xinyu Wang, Shuang Wu, Xu Yu, Lili Ren
Summary: In this study, matrix-free solid-state room-temperature phosphorescence carbon dots were successfully obtained through a simple one-step hydrothermal method. The findings suggest that the selection of suitable chain-like structure molecules can enhance the phosphorescence properties. The results of this study provide a new idea for the research and development of matrix-free carbon dots.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Physical
Fu Qin, Jianliang Bai, Yaqing Zhu, Pinyi He, Xinyu Wang, Shuang Wu, Xu Yu, Lili Ren
Summary: We report for the first time that the red fluorescence of leaf-derived carbon dots is derived from chlorophyll, and propose a possible formation structure. By controlling the solvothermal reaction temperature, the new luminescence center of CDs can be adjusted. This work provides unprecedented insights into the luminescence mechanism of biomass-derived CDs.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Xinyu Wang, Xu Yu, Shuang Wu, Pinyi He, Fu Qin, Yongkang Yao, Jianliang Bai, Guojun Yuan, Lili Ren
Summary: A crystalline-amorphous Ni3S2/NiPx electrocatalyst with a coupled interface was developed, which exhibited high catalytic performance for the oxygen evolution reaction (OER). The catalyst showed low OER overpotential and small Tafel slope, indicating excellent long-term stability with less than 5% decay in activity over 20 hours of continuous operation. This study provides inspiration for optimizing catalyst performance by coupling crystalline-amorphous structures.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Electrochemistry
Xinyu Wang, Xu Yu, Jianliang Bai, Guojun Yuan, Pinyi He, Yaqing Zhu, Shuang Wu, Fu Qin, Lili Ren
Summary: A self-supported hierarchical Fe-doped nickel sulfide/nickel phosphide heterostructure electrocatalyst was obtained via a successive structural transformation, exhibiting high-efficiency OER and HER performance in alkaline conditions. This work confirms the potential of designing robust bifunctional electrocatalysts for alkaline water electrocatalysis by carefully combining doping engineering as well as interfacial effects.
ELECTROCHIMICA ACTA
(2023)
Article
Nanoscience & Nanotechnology
Runfang Pei, Pinyi He, Min Li, Guangyan Wang, Xinyu Wang, Fu Qin, Xu Yu, Jianliang Bai, Lili Ren
Summary: Carbon dots (CDs) have great potential in various applications due to their excellent optical properties. In this study, solvent-dependent CDs (N-CDs) and modified CDs (O-CDs) were synthesized. The N-CDs showed a small red-shift in emission wavelength when dispersed in different solvents, while the O-CDs exhibited emission peaks in the yellow, orange, and red regions, with a tail extending into the near-infrared-I region. This work provides a novel strategy for preparing long wavelength emissive CDs and successfully applies them in cellular imaging.
Article
Chemistry, Multidisciplinary
Yaqing Zhu, Jianliang Bai, Zhujun Huang, Guojun Yuan, Lu Zhang, Xinyu Wang, Lili Ren
Summary: Researchers have developed a universal strategy to disperse CQDs into cyanuric acid (CA) to prepare CQDs-CA composites, which exhibit dark-blue delayed fluorescence (DF) and blue room temperature phosphorescence (RTP) after 254 nm excitation, as well as green RTP after 365 nm excitation. The afterglow lifetimes exceed 1 second, and the afterglow persists even in extreme conditions (pH = 1 or 14) in aqueous solutions. The excellent afterglow properties and stability make CQDs-CA a promising material for fingerprinting and advanced anti-counterfeiting applications.
MATERIALS CHEMISTRY FRONTIERS
(2021)
