Review
Chemistry, Multidisciplinary
Tianjia Yang, Yuxuan Li, Zihao Zhao, Wang Zhang Yuan
Summary: Nonconventional luminophores have unique photophysical properties and potential applications in various fields, including fluorescence, phosphorescence, and color tunable room temperature phosphorescence (RTP). This article summarizes recent advances in the phosphorescence of nonconventional luminophores, with a focus on RTP and color tunable RTP. The clustering-triggered emission (CTE) mechanism is applied to explain luminescence as clustering-triggered phosphorescence (CTP).
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Materials Science, Paper & Wood
Kunfeng Jin, Guangjie Song, Huailing Diao, Xiaocheng Zhang, Xin Ji, Jinming Zhang, Jun Zhang
Summary: In this study, crystalline and amorphous cellulose from tunicate were prepared to investigate the non-conventional photoluminescence property. The results showed that CNC foam had the strongest fluorescence emission intensity and shortest phosphorescence lifetime, while CNC/PVA films had the lowest photoluminescence quantum yield and longest phosphorescence lifetime. Highly amorphous cellulose exhibited stronger phosphorescence emission intensity and longer lifetime compared to crystalline cellulose, attributed to the different hydrogen bonding networks and surface group motion on nanocrystals.
Article
Materials Science, Multidisciplinary
Yide Meng, Song Guo, Bingli Jiang, Xiaofeng Zhang, Linmin Zou, Chun Wei, Yongyang Gong, Si Wu, Yuanli Liu
Summary: Organic room temperature phosphorescence (RTP) has garnered significant attention for its potential applications, and hydrogen bond engineering has proven to be an effective strategy in constructing luminescent materials. However, research on moisture-resistant properties lags behind, even though it plays a crucial role in preventing humidity-induced quenching of RTP emission.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Review
Chemistry, Multidisciplinary
Saixing Tang, Tianjia Yang, Zihao Zhao, Tianwen Zhu, Qiang Zhang, Wubeiwen Hou, Wang Zhang Yuan
Summary: Nonconventional luminophores, lacking extended conjugates, have unique luminescence properties and applications in various fields. These unconventional luminophores possess nonconjugated structures and exhibit intriguing luminescence behaviors.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Engineering, Environmental
Maozhu Zeng, Tang Li, Yingchun Liu, Xuliang Lin, Xihong Zu, Yingxiao Mu, Liheng Chen, Yanping Huo, Yanlin Qin
Summary: This study presents a simple and universal strategy to obtain polymer film from cellulose chains. By connecting aromatic derivatives onto the chains and drying them through hot press process, the emission color of the film can be tuned. The best-performing film shows a significantly enhanced lifetime after irradiation. Additionally, the hot-pressed films exhibit excellent mechanical and luminescent properties due to the space stacking effects of grafted groups and abundant intermolecular hydrogen bonding.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Mengdie Zhou, Jiafan Zhang, Yueyue Chen, Zhong Chen, Yongjie Yuan, Yongyang Gong, Hailiang Zhang
Summary: In this study, chiral liquid crystals were used to obtain circularly polarized luminescence (CPL) materials with high dissymmetry factor (glum) values. PM6Chol-coated film exhibited efficient CPL due to the helical arrangement of cholesterol, while PM6Chol thermal-treated film showed no CPL signal but demonstrated room-temperature phosphorescence.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Polymer Science
Naved Azum, Mohammad Jawaid, Lau Kia Kian, Anish Khan, Maha Moteb Alotaibi
Summary: Washingtonia fiber, with its potential as an alternative biomaterial for manufacturing microcrystalline cellulose (MCC) products, showed high purity of cellulose content, high crystallinity, and greater thermal stability compared to untreated fiber samples. This indicates its potential as a reliable biosubstituent for MCC production in the future.
Article
Chemistry, Multidisciplinary
Jia Ren, Yunsheng Wang, Yu Tian, Zhenjiang Liu, Xiangheng Xiao, Jie Yang, Manman Fang, Zhen Li
Summary: Research on abnormal stimulus-responsive organic room-temperature phosphorescence effect is conducted, showing persistent phosphorescence of Czs-ph-3F under grinding. Experimental results and theoretical calculations indicate that the transition of molecular conformation of the phenothiazine group is mainly responsible for this result. Furthermore, applications of stylus printing and thermal printing based on the unique RTP effect of Czs-ph-3F are successfully realized.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Yi Chen, Yujun Xie, Zhen Li
Summary: This study observed room-temperature phosphorescence (RTP) from two simple aromatic acids in the crystal state, and revealed the crucial role of molecular structure and hydrogen bonding in RTP through single crystal structure analysis and theoretical calculations.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Qiuyan Liao, Qianqian Li, Zhen Li
Summary: The introduction of different substituents can modulate the RTP effect and enhance the performance of organic materials. Minor differences between substituents can significantly alter the molecular packing in aggregated states, facilitating improved RTP performance.
Article
Engineering, Environmental
Amina Hachaichi, Benalia Kouini, Lau Kia Kian, Mohammad Asim, Mohammad Jawaid
Summary: This study successfully extracted microcrystalline cellulose (MCC) from Algerian date palm tree fruit bunch branches fibers, demonstrating its high performance and cost-effectiveness for use in composite materials. Additionally, the extracted MCC showed increased crystallinity and thermal stability compared to raw date palm fibers, indicating its potential application in various fields for producing ecofriendly bionanocomposites.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Chemistry, Physical
Amina Hachaichi, Benalia Kouini, Lau Kia Kian, Mohammad Asim, Hassan Fouad, Mohammad Jawaid, Mohini Sain
Summary: Date palm fiber is a natural biopolymer rich in lignocellulosic components, making it suitable for extracting small particles like microcrystalline cellulose (MCC) and nanocrystalline cellulose (NCC). The isolated NCC from date palm MCC, with different hydrolysis times, showed high crystallinity, small particle size, and stable heat resistance, indicating its potential for various applications in biomedical and food packaging fields.
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
Biochemistry & Molecular Biology
Peng Zhu, Luyao Feng, Zejun Ding, Xuechun Bai
Summary: This study systematically investigated the effects of pretreatment on the production of spherical cellulose nanocrystals (CNC) from microcrystalline cellulose (MCC) using mixed acid hydrolysis. The results showed that the swelling process was not necessary and the form of pretreated MCC had an impact on the properties of spherical CNC.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Nanoscience & Nanotechnology
Biao Zhao, Shenghua Yang, Xueyong Yong, Jianping Deng
Summary: The study presents a simple strategy to achieve ultralong RTP emission in biobased nonconjugated polymers through a hydrolyzation process. The polymers synthesized exhibit enhanced blue emission and persistent RTP, with reversible emission performance regulated by cations or substituents. The obtained polymers show potential applications in anticounterfeiting and information encryption.
ACS APPLIED MATERIALS & INTERFACES
(2021)