| 2 | A fully inkjet-printed disposable gas sensor matrix with molecularly imprinted gas-selective materials显示文摘A method was used to fabricate a fully inkjet-printed gas sensor matrix on photographic paper.An electrode matrix comprising 36 interdigital electrodes in a high-density layout that is easy to integrate has been fabricated using a combination of insulating ink and commercial silver ink.Molecular-imprinted polymer(MIP)inks were then made using a simple solution mixing method,and these inks were printed together with carbon black ink on the electrode matrix to complete production of the sensor.Finally,experimental dynamic sensing of volatile organic compounds verifies that for detection of gases corresponding to the MIP template molecules,the MIP layer offers improvements in both sensitivity and selectivity when compared with non-imprinted polymer layers.The matrix can produce a response of more than 20%to 3 ppm propenoic acid gas through adjustment of the printing times for the carbon black layer and the MIP layer. | Lingpu Ge Xiao Ye Zeping Yu Bin Chen Chuanjun Liu Hao Guo Shiyi Zhang Fumihiro Sassa Kenshi Hayashi | 2022 | npj Flexible Electronics2022，6，1： | 0 |
| 3 | A ratiometric fluorescent nanoprobe based on ZIF-8@AuNCs-Tb for visual detection of 2,6-pyridinedicarboxylic acid显示文摘The rapid and sensitive detection of 2,6-pyridinedicarboxylic acid(DPA),one of the main biomarkers of Bacillus anthracis,is of great significance for the screening and diagnosing of anthrax.Herein,a ratiometric fluorescent nanoprobe based on zeolite imidazolate framework-8(ZIF-8)@AuNCs-Tb was constructed by embedding both gold nanoclusters(AuNCs)and terbium ions(Tb^(3+))into ZIF-8 for highresolution visual detection of DPA.Due to the aggregation induced emission enhancement(AIE)effect,AuNCs embedded in ZIF-8 emit a strong orange fluorescence.When Tb^(3+)is coordinated with DPA added to the nanoprobe,it will emit a strong green fluorescence owing to the antenna effect.The results reveal that ZIF-8@AuNCs-Tb nanoprobe can detect DPA effectively with a good linear relationship in the range of 40-200 and 200-1000μmol/L,the limit of detection(LOD)is estimated at 1.8μmol/L(3σ/k).The proposed nanoprobe shows a remarkable selectivity for DPA and is quite easy to realize visualization based on the fluorescent color changing from orange to green,which has potential application in clinical diagnosis.The feasibility of this method was verified by standard addition recovery experiments simulating the release of DPA from spores. | Kang Shao Siyu Wen Mengyuan Zhang Jing Wang Shiyi Ye Zaifa Pan | 2022 | Journal of Rare Earths2022，40，8： | 0 |
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