CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
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2025
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IF 10.3
Lin-An Cao,Yi-Qian Li,Lu Sun,Sai Chu,Yun-Fei Huo,Xiao-Qin Li,Jia-Hui Guo,Fang-Li Yuan,Kenichi Otake,Dai-Lian Wang,Ming-Shui Yao
The sulfur-fumigation process not only induces the chemical transformation of Lycium barbarum (Lb, a widely used traditional Chinese medicine) but also severely influences human health. Given the existing challenges like the complex and time-consuming operation, as well as the high technical demands of the current detection methods for sulfur-fumed Lycium barbarum (SF-Lb), this paper employs a simple chemiresistor to carry out discrimination research between Lb and SF-Lb which have significant differences in volatolomics. The sensor is constructed by a conductive metal-organic framework (cMOF) thin film, Cu 3 (HHTP) 2 , due to its abundant active sites, excellent electron transfer performance as well as the capacity to detect specific groups of volatile organic compounds (volatolomics). Consequently, the response values of the Cu 3 (HHTP) 2 -based sensor to 0.5 g SF-Lb (151.74%) are significantly higher than those to normal Lb (80.07%), identifying SF-Lb simply and rapidly with an accuracy of ∼100%. Our work investigates volatolomics of SF-Lb and establishes a new rapid discrimination method for sulfur-fumed traditional Chinese herbs.
研究领域:
中药学
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分析化学
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传感技术
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMISTRY
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2024
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IF 5.5
Lin-An Cao,Yi-Qian Li,Yun-Fei Huo,Lu Sun,Xiao-Qin Li,Lu Chen,Xue-Tong Yang,Fang-Li Yuan,Ming-Shui Yao
Comprehensive Summary As one of the famous traditional Chinese herbal medicines, Fritillariae Cirrhosae Bulbus (FCB) is widely used in the prevention and treatment of respiratory diseases and has the best curative effect among the known fritillarias medicines. Due to the variety, complex sources, similar appearance and shape, it is difficult to distinguish FCB with high curative effect (h-FCB) from other common fritillarias (c-FCB) in the market. In this paper, a very simple chemiresistor is used to identify FCB from three commonly used fritillarias drugs. The sensors are fabricated by anisotropic electrically conductive metal-organic framework (cMOF) thin film Cu 3 (HHTP) 2 (Cu-HHTP [001] and Cu-HHTP [100] ) as active materials owing to their ability to detect specific groups of volatile organic compounds (volatolomics) as the functional motifs of chemiresistor. As a result, the sensors show orientation-dependence identification ability to FCB. Cu-HHTP [001] - based sensor shows the highest response (344.17%) to 0.5 g h-FCB powder volatiles among its three other c-FCB which is much higher than Cu-HHTP [100] (135.50%). Ultimately, Cu-HHTP [001] can realize the identification of FCB with an accuracy of 97.2% in a simple and real-time manner.
研究领域:
中药学
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传感技术
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植物化学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
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2025
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IF 9.5
Jie Meng,Ying Wang,Li-Yang Shao,Tian-Shu He,Jiao-Na Yue,Bo-Lin Sun,Quan-Guo Zhai
The rational control of heterostructure motifs and the corresponding electronic environment in heterocatalysts offers an effective strategy to regulate CO2RR selectivity, yet it remains challenging. The precise regulation of the reaction intermediates is therefore a critical determinant. In this work, the size-engineered cMOF/o-Cu2O was introduced to modulate heterostructure motifs, thereby modulating the *CHO intermediate selectivity switch and steering C2 or C1 reaction pathways. We elucidated the divergent CO2RR pathways governed by the differential growth degrees of the cMOF/o-Cu2O heterostructures. The minimized cMOF/o-Cu2O-s (∼361.8 nm), comprising a high proportion of –OH terminations, accelerated the continuous hydrogenation of *CHO and promoted their conversion into *CHxO intermediates. The moderate cMOF/o-Cu2O-m (∼870.1 nm) achieved an optimal balance between the intermediate concentrations and interfacial transfer, enabling a preferential *CHO–*CO coupling pathway through the rationally designed heterostructure motifs. In contrast, the enlarged cMOF/o-Cu2O-l (∼2.7 µm) exhibited an indistinguishable force toward the key intermediates of *CHO, thereby failing to differentiate between the subsequent reaction pathways. The intensified *CHxO and *CHO–*CO signals observed in the in situ ATR-FTIR further verified the bifurcated reaction pathways, featuring a C1-dominated pathway on cMOF/o-Cu2O-s and C2 pathway on cMOF/o-Cu2O-m. cMOF/o-Cu2O-m achieved a Faraday efficiency of 71.1% for C2 products at −1.3 V vs. RHE. This work offers crucial insights into the significance of size engineering in modulating the heterostructure motifs to regulate the selectivity switch of key intermediates.
研究领域:
电催化
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材料化学
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二氧化碳还原反应（CO2RR）
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纳米材料工程
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多相催化
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
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2022
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IF 6.911
Xiaohui Niu,Simeng Yan,Letong Wang,Jinliang Chen,Rui Zhao,Hongxia Li,Jian Liu,Kunjie Wang
So far, the fabrication of chiral metal-organic framework (CMOF) is difficult to predict and the chiral functionality mainly comes from the building blocks that is a part of the frameworks. The induction effect in the chiral nanochannels of the metal-organic framework (MOF) makes achiral polymers have chiral properties, which has not been well explored. Therefore, CMOFs with chiral nanochannels or chiral pores appear to have special functions. Herein, CMOFs (D-his-ZIF-8) with chiral micropores or chiral nanochannels are prepared through a simple 2-methyl imidazolate in-situ substitution by d -histidine. The unmodified polyaniline with chirality ( c -PANI) was synthesized in chiral nanochannels and pores of CMOF, which brought about chiral induction from the chiral nanochannels and pores of CMOF to c -PANI chains. The circular dichroism shows that the c -PANI chains released from the chiral nanochannel still maintains the chiral properties even leaves the chiral nanochannel. It can be seen from the electrochemical results that c -PANI has excellent conductivity, and the conductivity of CMOF is very poor. Electrochemical recognition showed that both CMOF and c -PANI have certain chiral recognition effects for L-Trp and D-Trp, from which the optimal recognition effect was obtained from c -PANI chains. This shows that the excellent conductivity of c -PANI not only expands the electrochemical signal, but also the helical structure of the c -PANI chains accelerates the distinction of chiral molecules. This study provides a novel perspective to induce chiral polymer chains with better conductivity in the nanochannels of CMOF.
研究领域:
材料科学
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化学
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纳米技术
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）