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学者姓名:于澍燕
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Abstract :
Circularly polarized luminescence (CPL) materials with delayed fluorescence have attracted much attention due to their ability to efficiently trap triplet state excitons, thereby improving the photoluminescence quantum yields of CPL materials. However, much effort has been normally focused on the utilization of T-1 excitons but seldom on the utilization of higher excited triplet state T-n (n > 1) excitons. Rational manipulation of higher excited triplet state T-n (n > 1) excitons and suppression of Kasha's rule of CPL materials remains a major challenge. Herein, two gold complex enantiomers ((R/S)-BPAuBC) based on axially chiral binaphthyls and 3,6-Di-tert-butylcarbazole groups are synthesized and systematically investigated. These materials exhibit aggregation-induced circularly polarized delayed fluorescence. Circularly polarized delayed fluorescence was found to be enabled by activating high-level reverse intersystem crossing (hRISC). The anti-Kasha phosphorescence at 77 K proves that the exciton has a large population in the high-lying triplet state T-2, which allows the effective hRISC process to cross back to the singlet state S-1 and emit delayed fluorescence. In addition, CPL "on-off" switching is further achieved in nanoparticles by acid-base stimulus, showing its potential as an acid-base responsive material.
Keyword :
aggregation-induced emission aggregation-induced emission high-level reverse intersystem crossing high-level reverse intersystem crossing anti-Kasha anti-Kasha delayed fluorescence delayed fluorescence circularly polarized luminescence circularly polarized luminescence
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GB/T 7714 | Wang, Ke , Ou, Xinwen , Niu, Xiaofei et al. Aggregation-induced circularly polarized luminescence and delayed fluorescence enabled by activating high-level reverse intersystem crossing [J]. | AGGREGATE , 2024 . |
MLA | Wang, Ke et al. "Aggregation-induced circularly polarized luminescence and delayed fluorescence enabled by activating high-level reverse intersystem crossing" . | AGGREGATE (2024) . |
APA | Wang, Ke , Ou, Xinwen , Niu, Xiaofei , Wang, Zhenghao , Song, Fengyan , Dong, Xiaobin et al. Aggregation-induced circularly polarized luminescence and delayed fluorescence enabled by activating high-level reverse intersystem crossing . | AGGREGATE , 2024 . |
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Abstract :
晶体工程学是在超分子自组装基础上发展起来的,跨越晶体学、材料科学、合成化学的交叉学科。超分子手性晶体工程属于晶体工程学的一大分支,运用晶体工程学原理和方法设计手性超分子合成子,构筑出手性超分子晶体材料,并进一步探讨对映体选择性识别分离和催化方面的应用前景。
Keyword :
手性超分子晶体材料 手性超分子晶体材料 超分子手性 超分子手性 手性构筑基块 手性构筑基块 晶体工程学 晶体工程学 自组装 自组装
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GB/T 7714 | 童金 , 于澍燕 . 超分子手性晶体工程学 [J]. | 大学化学 , 2024 , 39 (03) : 86-93 . |
MLA | 童金 et al. "超分子手性晶体工程学" . | 大学化学 39 . 03 (2024) : 86-93 . |
APA | 童金 , 于澍燕 . 超分子手性晶体工程学 . | 大学化学 , 2024 , 39 (03) , 86-93 . |
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GB/T 7714 | Wang, Peipei , Tong, Jin , Meng, Cong et al. Self-assembly of tripyrazolate-linked [M6L2] cages for the selective sensing of HSO3- and gaseous SO2 by turn-on fluorescence (vol 52, pg 6129, 2023) [J]. | DALTON TRANSACTIONS , 2023 , 52 (19) : 6588-6588 . |
MLA | Wang, Peipei et al. "Self-assembly of tripyrazolate-linked [M6L2] cages for the selective sensing of HSO3- and gaseous SO2 by turn-on fluorescence (vol 52, pg 6129, 2023)" . | DALTON TRANSACTIONS 52 . 19 (2023) : 6588-6588 . |
APA | Wang, Peipei , Tong, Jin , Meng, Cong , Yuan, Qing , Deng, Wei , Yu, Shu-Yan et al. Self-assembly of tripyrazolate-linked [M6L2] cages for the selective sensing of HSO3- and gaseous SO2 by turn-on fluorescence (vol 52, pg 6129, 2023) . | DALTON TRANSACTIONS , 2023 , 52 (19) , 6588-6588 . |
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Abstract :
Owing to their structural designability and tuneable properties, supramolecular metal-organic complexes have recently emerged as promising candidates for the sensing and detection of molecules and anions. Herein, we synthesised three tripyrazolate-linked [M6L2] metallocages with the formulas [(bpyPd)(6)L-2](NO3)(6) (1), [(dmbpyPd)(6)L-2](NO3)(6) (2), and [(phenPd)(6)L-2](NO3)(6) (3) (H3L = tris(4-(5-(trifluoromethyl)-1H-pyrazol-3-yl)phenyl)amine, bpy = 2,2'-bipyridine, dmbpy = 4,4'-dimethylbipyridine, phen = 1,10-phenanthroline). Crystallography revealed that metal-directed coordination and the bidentate chelate behaviour of the ligand induced the self-assembly of supramolecular metal-organic cages. Notably, these cages were employed as turn-on fluorescence sensors for SO2 and its derivative (HSO3-) through a disassembly mechanism. Cages 1, 2, and 3 showed a highly selective and sensitive detection of HSO3- over other common anions in aqueous solutions and of SO2 gas over other common gasses, with an excellent anti-interference ability. These metallocages were subsequently applied as sensors in environmental and biological samples. This study not only enriches the ongoing research on metal-organic supramolecular materials but also facilitates the future preparation of stimuli-responsive supramolecular coordination complexes.
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GB/T 7714 | Wang, Peipei , Tong, Jin , Meng, Cong et al. Self-assembly of tripyrazolate-linked [M6L2] cages for the selective sensing of HSO3- and gaseous SO2 by turn-on fluorescence [J]. | DALTON TRANSACTIONS , 2023 , 52 (18) : 6129-6137 . |
MLA | Wang, Peipei et al. "Self-assembly of tripyrazolate-linked [M6L2] cages for the selective sensing of HSO3- and gaseous SO2 by turn-on fluorescence" . | DALTON TRANSACTIONS 52 . 18 (2023) : 6129-6137 . |
APA | Wang, Peipei , Tong, Jin , Meng, Cong , Yuan, Qing , Deng, Wei , Yu, Shu-Yan et al. Self-assembly of tripyrazolate-linked [M6L2] cages for the selective sensing of HSO3- and gaseous SO2 by turn-on fluorescence . | DALTON TRANSACTIONS , 2023 , 52 (18) , 6129-6137 . |
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Abstract :
Luminescent supramolecular metallacycles have attractedgreat interestas a new promising class of sensing substrates. In this work, twotetraphenylethene (TPE)-based diimidazole and dipyrazole ligands withthe aggregation-induced emission (AIE) feature were designed for theconstruction of supramolecular tetragonal metallacycles 1-4 with two 90 & DEG; mononuclear [(bpy)M](2+) or dinuclear [(bpy)(2)M-2](4+) acceptors (bpy = 2,2 & PRIME;-dipyridine; M = Pd, Pt), in which thefluorescence can be quenched to an "off" state due tothe ligand-to-metal charge transfer (LMCT). Metallacycle 1 was utilized as a fluorescence sensor for phosphate (PO4 (3-)) detection in aqueous solution by means of disassembly,leading to the release of the ligand. Additionally, the metallacyclecan be regenerated through self-assembly via the introduction of Pd(II)acceptors. PO4 (3-) was detected using TPE-basedmetallacycles over a wide concentration range, with a detection limitas low as 2.1 x 10(-8) M. Furthermore, sensor 1 also presented the semiquantitative visual detection abilityfor PO4 (3-) in the test paper mode viafluorescence changes. The aforementioned studies not only enhancethe current research on fluorescent materials but also offer a strategyfor the creation of stimuli-responsive supramolecular coordinationcomplexes.
Keyword :
AIE-activeligand AIE-activeligand fluorescence detection fluorescence detection supramolecular metallacycle supramolecular metallacycle cell imaging cell imaging phosphate sensing phosphate sensing
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GB/T 7714 | Kou, Ya-Lan , Tong, Jin , Meng, Cong et al. Reversible and Turn-On Fluorescence Detection of Phosphate in Aqueous Solution and Living Cell Imaging by Supramolecular Metallacycles with AIE-Active Ligands [J]. | ACS APPLIED MATERIALS & INTERFACES , 2023 . |
MLA | Kou, Ya-Lan et al. "Reversible and Turn-On Fluorescence Detection of Phosphate in Aqueous Solution and Living Cell Imaging by Supramolecular Metallacycles with AIE-Active Ligands" . | ACS APPLIED MATERIALS & INTERFACES (2023) . |
APA | Kou, Ya-Lan , Tong, Jin , Meng, Cong , Yuan, Qing , Wang, Ji , Yu, Shu-Yan . Reversible and Turn-On Fluorescence Detection of Phosphate in Aqueous Solution and Living Cell Imaging by Supramolecular Metallacycles with AIE-Active Ligands . | ACS APPLIED MATERIALS & INTERFACES , 2023 . |
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Abstract :
Thepalladium(II)-based square structures [M8L4 ]( 8+ ) have been synthesizedby coordinating the aromatic bispyrazole ligands with dipalladiumcorners in aqueous solution via the metal-driven self-assembly, whichcan be used for efficient capture of iodine. Square-like metallamacrocyclic palladium(II) complexes[M8L4 ]( 8+ ) (1-7) were synthesized by reacting aromaticdipyrazole ligands (H2L1-H2L3 with pyromelliticarylimide-, 1,4,5,8-naphthalenetetracarboxylic arylimide-, and anthracene-basedaromatic groups, respectively) with dipalladium corners ([(bpy)(2)Pd-2(NO3)(2)](NO3)(2), [(dmbpy)(2)Pd-2(NO3)(2)](NO3)(2), or [(phen)(2)Pd-2(NO3)(2)](NO3)(2),where bpy = 2,2 '-bipyridine, dmbpy = 4,4 '-dimethyl-2,2 '-bipyridine,and phen = 1,10-phenanthroline) in aqueous solutions via metal-directedself-assembly. Metallamacrocycles 1-7 were fullycharacterized by H-1 and C-13 nuclear magneticresonance spectroscopy and electrospray ionization mass spectrometry,and the square structure of 7 center dot 8NO(3) (-) was further confirmed via single crystal X-ray diffraction.These square-like metallamacrocycles exhibit effective performancefor iodine adsorption.
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GB/T 7714 | Zhou, Meng-Ying , Yu, Zheng-Su , Deng, Wei et al. [M8L4](8+)-Type Squares Self-Assembled by Dipalladium Corners and Bridging Aromatic Dipyrazole Ligands for Iodine Capture [J]. | INORGANIC CHEMISTRY , 2023 , 62 (26) : 10193-10202 . |
MLA | Zhou, Meng-Ying et al. "[M8L4](8+)-Type Squares Self-Assembled by Dipalladium Corners and Bridging Aromatic Dipyrazole Ligands for Iodine Capture" . | INORGANIC CHEMISTRY 62 . 26 (2023) : 10193-10202 . |
APA | Zhou, Meng-Ying , Yu, Zheng-Su , Deng, Wei , Lu, Hong-Lin , Niu, Xiao-Fei , Tong, Jin et al. [M8L4](8+)-Type Squares Self-Assembled by Dipalladium Corners and Bridging Aromatic Dipyrazole Ligands for Iodine Capture . | INORGANIC CHEMISTRY , 2023 , 62 (26) , 10193-10202 . |
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Abstract :
分子化学通过分子间相互作用,将分子构筑成复杂结构与功能的超分子系统。涉及到分子识别,人工酶系统,人工光合作用系统,分子传感器,分子机器等前沿分支领域。稀土元素特有的光、电、磁性质在材料科学领域发挥重要作用,将稀土金属离子组装到有机主体分子中,形成功能优异的超分子器件,在生物分子传感器、磁共振造影、荧光成像等方面具有重要的应用前景,因而受到广泛关注。我们实验室在稀土穴醚超分子、稀土-过渡杂金属有机超分子的动态共价键的自组装化学方面,进行过长期探索,取得一些进展。为进一步将不同特性的稀土元素和过渡金属元素同多功能配体自分类组装成多功能集成的超分子器件打下了扎实的基础。我们设计的多功能有机配体包括:吡唑-羧酸、吡唑-β-二酮、吡唑-吡啶二羧酸类配体,自组装形成的稀土-过渡金属有机超分子体系具有超分子手性和发光功能,为创造稀土超分子新材料和器件打下了一定的基础。
Keyword :
超分子手性 超分子手性 超分子 超分子 传感 传感 稀土 稀土 多功能有机配体 多功能有机配体
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GB/T 7714 | 于澍燕 , 王培培 , 寇雅岚 et al. 稀土超分子化学:动态共价键的自组装化学 [C] //中国稀土学会2022学术年会、第十四届中国包头·稀土产业论坛摘要集 . 2022 . |
MLA | 于澍燕 et al. "稀土超分子化学:动态共价键的自组装化学" 中国稀土学会2022学术年会、第十四届中国包头·稀土产业论坛摘要集 . (2022) . |
APA | 于澍燕 , 王培培 , 寇雅岚 , 邓威 , 童金 . 稀土超分子化学:动态共价键的自组装化学 中国稀土学会2022学术年会、第十四届中国包头·稀土产业论坛摘要集 . (2022) . |
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Abstract :
稀土发光超分子器件在分子机器、荧光传感、荧光成像医疗诊断等前沿领域具有重要应用前景。我们设计合成蒽桥联双β二酮配体L——1,5-双(三氟-β-二酮)蒽、1,5-双(苯基-β-二酮)蒽、1,5-双(甲基-β-二酮)蒽、1,8-双(甲基-β-二酮)蒽、1,8-双(三氟-β-二酮)蒽、9,10-双(三氟-β-二酮)蒽和9,10-双(甲基-β-二酮)蒽。蒽桥联双β二酮配体L同稀土离子(RE~(3+))在溶液中进行自组装,得到系列稀土三股螺旋穴状超分子RE2L3。运用核磁和质谱等进行了表征,进一步测定其荧光光谱。
Keyword :
蒽桥联双β二酮配体 蒽桥联双β二酮配体 超分子 超分子 传感 传感 稀土 稀土
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GB/T 7714 | 王培培 , 寇雅岚 , 邓威 et al. 稀土同蒽桥联双β二酮配体自组装的超分子三股螺旋穴状超分子 [C] //中国稀土学会2022学术年会、第十四届中国包头·稀土产业论坛摘要集 . 2022 . |
MLA | 王培培 et al. "稀土同蒽桥联双β二酮配体自组装的超分子三股螺旋穴状超分子" 中国稀土学会2022学术年会、第十四届中国包头·稀土产业论坛摘要集 . (2022) . |
APA | 王培培 , 寇雅岚 , 邓威 , 童金 , 于澍燕 . 稀土同蒽桥联双β二酮配体自组装的超分子三股螺旋穴状超分子 中国稀土学会2022学术年会、第十四届中国包头·稀土产业论坛摘要集 . (2022) . |
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Abstract :
A series of regioisomeric luminophores L1-L8 with 1H-pyrazol-3-yl or 1H-pyrazol-4-yl substituents at the different positions of anthracene core have been synthesised and characterised. According to the photophysical properties and related frontier orbital features of these compounds, the 'site-effect' of pyrazolyl substituent on an anthracene unit can be found, demonstrating the dependence of the properties of the compound on the position of substitution of the pyrazolyl moieties connecting to the anthracene core. Moreover, the target luminophores present reversible mechanochromism properties. The most significant mechanochromism luminescence is achieved for luminophores L1 and L2 with pyrazolyl substituents at the 9-and 10-positions of the anthracene unit. Upon grinding the pristine powder sample, a colour change from light yellow to yellow-green is observed. In addition, the target luminophores L2, L4, L6 and L8 demonstrate sensing properties of Hg2+ ions with high selectivity and exceptional sensitivity. These findings suggest that these anthracene-centred luminophores are promising functional platforms with fluorescence and selective heavy metal sensor arrays.
Keyword :
Mercury ion detection Mercury ion detection Mechanochromic luminescence Mechanochromic luminescence Regioisomeric luminophores Regioisomeric luminophores dipyrazolyl-anthracene dipyrazolyl-anthracene
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GB/T 7714 | Wang, Zhi-Feng , Tong, Jin , Guo, Jing et al. Regioisomeric dipyrazolyl-anthracene luminophores: mechanochromic luminescence switch and mercury ion detection with 'turn-off' response [J]. | DYES AND PIGMENTS , 2022 , 197 . |
MLA | Wang, Zhi-Feng et al. "Regioisomeric dipyrazolyl-anthracene luminophores: mechanochromic luminescence switch and mercury ion detection with 'turn-off' response" . | DYES AND PIGMENTS 197 (2022) . |
APA | Wang, Zhi-Feng , Tong, Jin , Guo, Jing , Shang, Ping , Yu, Yan-Min , Wang, Xia-Yan et al. Regioisomeric dipyrazolyl-anthracene luminophores: mechanochromic luminescence switch and mercury ion detection with 'turn-off' response . | DYES AND PIGMENTS , 2022 , 197 . |
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Abstract :
本发明提供一种四苯乙烯基多吡唑含氮杂环化合物及其制备方法和应用,所述四苯乙烯基多吡唑含氮杂环化合物为1, 1, 2, 2‑四(4‑(吡唑‑4‑基)苯基)乙烯,其化学式为C38H28N8,具有式(I)所示结构。1, 1, 2, 2‑四(4‑(吡唑‑4‑基)苯基)乙烯一种重要的氢键接受体,利用其氢键弱相互作用,可用于构建氢键有机网格结构。同时因为吡唑基团具有丰富配位活性作用点,通过金属‑有机配位作用键合或识别金属离子。本发明提出的四苯乙烯基四吡唑含氮杂环化合物,作为金属离子识别体在水体系以及有机溶剂体系中对金属汞离子表现出高度的敏感性,且不受其他阴离子的干扰。
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GB/T 7714 | 童金 , 崔波 , 赵利荣 et al. 一种四苯乙烯基多吡唑含氮杂环化合物及其制备方法和应用 : CN202110447053.8[P]. | 2021-04-25 . |
MLA | 童金 et al. "一种四苯乙烯基多吡唑含氮杂环化合物及其制备方法和应用" : CN202110447053.8. | 2021-04-25 . |
APA | 童金 , 崔波 , 赵利荣 , 于澍燕 . 一种四苯乙烯基多吡唑含氮杂环化合物及其制备方法和应用 : CN202110447053.8. | 2021-04-25 . |
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