JOURNAL OF MOLECULAR STRUCTURE
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2025
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IF 4.7
Meili Yang,Liu Yang,Huixin Yu,Xin Zhang,Zhong Zhang,Mao-Sen Yuan
Based on the ESIPT effect, a fluorescence probe HBT-TBD was successfully synthesized, with HBT as the luminescent group and a Si-O bond as the F - recognition site. HBT-TBD is a typical ratiometric fluorescence probe, and can realize the naked-eye monitoring of F - quickly and sensitively. HBT-TBD exhibits different fluorescence colour at various pH, providing a promising approach for developing a new type of acid-base indicator.
研究领域:
分析化学
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生物传感器
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分子探针
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荧光成像
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环境监测
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临床诊断
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产品关联
DOI
高影响因子
MOLECULES
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2023
·Vol. 28
·期 10
·4082
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IF 4.6
Jinbo Yang,Xiangxue Cao,Lanfeng Wei,Jianshu Zhang,Jinli Zhang,Ping Liu,Liang Xu,Pengfei Li
Herein, a four-coordinated organoboron compound, aminoquinoline diarylboron (AQDAB), is utilized as the photocatalyst in the oxidation of silane to silanol. This strategy effectively oxidizes Si–H bonds, affording Si–O bonds. Generally, the corresponding silanols can be obtained in moderate to good yields at room temperature under oxygen atmospheres, representing a green protocol to complement the existing preparation methods for silanols.Keywords:photocatalytic oxidation;silane;silanol;aminoquinoline diarylboron
研究领域:
有机化学
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光化学
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催化
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绿色化学
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DOI
高影响因子
HIGH PERFORMANCE POLYMERS
·
2019
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IF 1.584
Yinhong Liu,Yuhan Wei,Yongshuang Bian,Shengjiao He,Xin Wang,Xin Liu,Chenglei Li,Qi Wu,Xianyin Zeng,Hanguang Wang,Kuan Liu
Design and synthesis of highly selective fluorine ion probes become particularly important owing to the specific role of fluorine ion in chemical and biomedical progresses. As a new-type of fluorescent material, conjugated polymers with unique photometric properties have been widely researched by scientists in the field of the fluorescence sensors. In this study, the polymer PBTPV-OSi containing benzothiazole moiety is synthesized via palladium-catalyzed Heck coupling reaction. This polymer not only exhibits good solubility in organic solvents but also shows high selectivity for fluorine ion detection in comparison to other anions. Upon addition of F− to PBTPV-OSi solution, Si–O cleavage of PBTPV-OSi leads to the fluorescence quenching of the polymer in tetrahydrofuran dramatically, and the detection limit is 8 × 10−6 mol/L. Moreover, besides detecting fluorine ion from organic phase, the probe can also effectively detect potassium fluoride from inorganic phase. More importantly, a naked-eye detectable chromogenic and fluorogenic dual response to fluorine ion (F−) can be visibly noted and the detection process of fluorine ion is relatively fast.
研究领域:
材料科学
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分析化学
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荧光传感
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聚合物化学
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DOI
高影响因子
CEMENT & CONCRETE COMPOSITES
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2022
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IF 9.93
Cong Wu,Bing Yin,Dongshuai Hou,Shaochun Li,Xinpeng Wang
Core-shell polymer coating is a significant means of improving the surface protection of cement-based materials. In this paper, a novel strategy for the paraffin-doped polystyrene acrylate-polysiloxane core-shell emulsions (CSP) are proposed by combining polyaddition and polycondensation reactions , integrating the superior corrosion-resistance of PSA emulsions with the high-hydrophobicity of siloxane emulsions. The CSP emulsions have excellent physical stability and rheological behavior , with a lower proportion of unsaturated bonds and lower content of chemically bound water. The core-shell structure promotes the formation of Si–O bonds between the polymer molecules and the cement matrix , and more conducive to the formation of new silicate crystals on the cement hydrate surface. Macroscopically, the surface energy of the cement samples treated with CSP coating is below 16.7 mJ/m 2 , while its superficial nanoscale papillae give a water contact angle of almost 140°. The capillary absorption coefficient of the Portland concrete treated with CSP coating can be decreased to only 2.09 g/(m 2 ·h 0.5 ). Meanwhile, the corrosion rate of Cl − and SO 4 2− on the cementitious materials are significantly inhibited by the CSP membrane, reducing the levels of Friedel's salt, ettringite and gypsum generated by ionic corrosion, respectively. Furthermore, the CSP membranes have excellent molecular structural integrity and high cross-linkage under acid/alkaline corrosion and photo-thermal aging, maintaining superior adhesion and corrosion resistance with the cement substrate.
研究领域:
材料科学
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土木工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）