Science China-Materials
·
2023
·Vol. 66
·期 5
·1949-1958
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IF 8.1
Jiang Jiawei,Zhang Peisheng,Tian Yong,Lin Zhong,Zhang Chonghua,Cui Jiaxi,Chen Jian,Chen Xudong
High-performance information encryption materials are crucial for developing advanced technologies that prevent information leakage and combat fraud. These materials must be robust, intelligent, and easily programmable. To meet these criteria, we developed an information encryption toolbox based on a series of novel self-healing photoswitchable dual (P1 and P2) and multistate (P3) fluorescent polymers using two photochromic fluorescent diarylethenes, i.e., 4-hydroxybutyl acrylate link 1,2-bis(2-methyl-1-benzothiophene-1,1-dioxide-3-yl)perfuoro-cyclopentene (SDTE), 4-(acryloyloxy)butyl 4-oxo-4-butanoate link 2,3-bis (2-methylbenzo[ b ]thiophen-3-yl)-5,6-dihydro-4 H -thieno[2,3- b ]thiopyran-4-one (BTBA) and hydrogen-bonding units, i.e., 2-ureido-4[1 H ]-pyrimidinone (UPy). Upon irradiation with different wavelength lights, P1/P2 can be alternated between green/red and quenched states, while P3 can be switched among red, green, and quenched states. Using these polymers to fabricate pixel units can produce reconfigurable patterns and codes displaying good mechanical properties and excellent optical characteristics, including rapid photoresponsiveness, robust photoreversibility, superior fluorescent thermal stability, and strong resistance to acid and base corrosion. Furthermore, we also demonstrated the immediate application opportunities of our toolbox in three-dimensional-code arrays and quick response codes.
研究领域:
材料科学
·
光学
·
信息学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Chi Zhong,Ziqi Wu,Yangqing Mao,Bing Zhao,Yi Sun,Min Zheng,Mingru Zhou,Guanjun Chang,Yewei Xu
A novel donor–acceptor–donor (D–A–D) polymer, named poly(triphenylamine sulfone) (PTPAS), incorporating a triphenylamine group as the donor and a sulfone group as the acceptor, has been designed and synthesized. PTPAS was efficiently prepared using readily available materials through a catalyst-free C–N coupling reaction, demonstrating its suitability for large-scale industrial production. PTPAS exhibited remarkable thermal performance and demonstrated dual-state emission (DSE) characteristics, with fluorescence quantum yields of 0.58 in tetrahydrofuran solution, 0.27 in 99% aqueous solution, and 0.09 in the solid state. Moreover, PTPAS displayed exceptional fluorescence detection capabilities for TNT, exhibiting a high Stern–Volmer quenching constant (KSV) of 2.98 × 105 M−1, a low limit of detection (LOD) of 94 nM, and a rapid response time of 15 s. Crucially, PTPAS maintained excellent fluorescence performance and TNT detection characteristics across an exceptionally broad pH range from 1 to 13, showcasing its versatility. Additionally, PTPAS exhibited robust resistance to interference from cations, anions, and other nitro-based explosives.
研究领域:
材料科学
·
化学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Yuan Zhan,Lifeng Lin,Min Chen,Limin Wu
Dual-state emission (DSE) fluorophores with strong photoluminescence in both solution and solid states have wide applications in fluorescent probes and photoelectric devices. However, most of the existing DSE fluorophores involve complex synthetic strategies or only one or two emission colors in the solid state, which may hinder their practical applications. Herein, we report a facile and effective strategy to fabricate a kind of novel adjustable DSE fluorophore TPAA–Cu based on the small molecule terephthalic acid (TPA) and ascorbic acid (AA) with CuCl2 as the catalyst. Not only can the TPAA–Cu solution emit blue, blue-green, and yellow colors depending upon the pH of solution, but also it shows reversible pH-tunable fluorescence colors. More importantly, corresponding TPAA–Cu solid fluorophores with blue, blue-green, and yellow colors can also be obtained with the quantum yields of 16.3, 26.7, and 29.6%, respectively.
研究领域:
材料科学
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光学
·
化学
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产品关联
DOI
PubMed
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2018
·Vol. 24
·期 41
·10383-10389
·
IF 5.16
Yanzi Xu,Lin Ren,Dongfeng Dang,Ying Zhi,Xiaochi Wang,Lingjie Meng
Graphical A self-isolated enhanced emission (SIEE) strategy through flexible alkyl chains is proposed to suppress and prevent the emission-quenched π–π stacking in aggregated solid states. As observed, remarkable emission efficiency with quantum yields up to 99.72 % in solution and 77.46 % in solids are achieved for DBBT-C8 (see figure). Currently, the commonly developed organic luminescent materials (OLMs) usually exhibit poor luminescent performance in aggregated solid states compared with their well-dissolved solution states, making it a tough goal to achieve the highly emissive dual-state emission. To overcome this limitation, a “self-isolated enhanced emission” (SIEE) strategy through flexible alkyl chains to suppress the emission-quenched π–π stacking in solids is proposed here and, based on this guideline, remarkable emission efficiency with photoluminescence quantum yields up to 99.72 % in solution and 77.46 % in the solid state are achieved for the SIEE constructed DBBT-C8, which is then successfully used in solid-state displays and data encryption.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2023
·
IF 4.3
Wei Liu,Zexin Wang,Nannan Chen,Renfu Li,Tong Wu,Jingming Zhou,Yuqiu Ye,Yongbo Wei,Yanbing Ke,Hong Jiang,Lijun Xie
There is growing interest in developing dual-state emission luminogens (DSEgens) in the fluorescent materials community due to their bright emission in both dilute solution and the solid state and potential applications in various areas. In this work, we have developed a new dual-state emission (DSE) luminogen by integrating a benzothiazolium unit into the rofecoxib skeleton, namely 5-(( Z )-4-((( E )-3-methylbenzo[d]thiazol-2( 3H )-ylidene)- amino)benzylidene)-rofecoxib ( p -RBZ ). Importantly, by combining theoretical calculations and experimental investigation, a novel insight into the DSE mechanism of p -RBZ is firstly proposed. The reduced density gradient (RDG) calculation and single X-ray data analysis, both revealed that p -RBZ had strong intramolecular π-π interaction between a ring and d ring, which can limit molecular rotation, reduce the rate of non-radiative transition, and enhance luminous efficiency in solution. Meanwhile, the conformation twist of p -RBZ and the highly restricted intermolecular π-π stacking may permit their bright emission in the solid state from the single-crystal X-ray and Hirshfeld surface analysis. Furthermore, p -RBZ displayed apparent solvatochromism, mechanochromism, and lipid droplets-specific imaging properties. These results implied that DSE-active p -RBZ had the potential to be developed as a mechanical-force sensor and lipid droplets imaging probe.
研究领域:
化学
·
生物学
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医学
·
材料科学
✓ 已验证
DOI
高影响因子
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