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Surface-Modified Phthalocyanine-Based Two-Dimensional Conjugated Metal–Organic Framework Films for Polarity-Selective Chemiresistive Sensing
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-05-25 , DOI: 10.1002/anie.202104461 Mingchao Wang 1 , Zhe Zhang 1, 2 , Haixia Zhong 1 , Xing Huang 1 , Wei Li 1 , Mike Hambsch 2 , Panpan Zhang 1 , Zhiyong Wang 1 , Petko St Petkov 3 , Thomas Heine 1, 4 , Stefan C B Mannsfeld 2 , Xinliang Feng 1 , Renhao Dong 1
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-05-25 , DOI: 10.1002/anie.202104461 Mingchao Wang 1 , Zhe Zhang 1, 2 , Haixia Zhong 1 , Xing Huang 1 , Wei Li 1 , Mike Hambsch 2 , Panpan Zhang 1 , Zhiyong Wang 1 , Petko St Petkov 3 , Thomas Heine 1, 4 , Stefan C B Mannsfeld 2 , Xinliang Feng 1 , Renhao Dong 1
Affiliation
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2D conjugated metal–organic frameworks (2D c-MOFs) are emerging as electroactive materials for chemiresistive sensors, but selective sensing with fast response/recovery is a challenge. Phthalocyanine-based Ni2[MPc(NH)8] 2D c-MOF films are presented as active layers for polarity-selective chemiresisitors toward water and volatile organic compounds (VOCs). Surface-hydrophobic modification by grafting aliphatic alkyl chains on 2D c-MOF films decreases diffused analytes into the MOF backbone, resulting in a considerably accelerated recovery progress (from ca. 50 to ca. 10 s) during humidity sensing. Toward VOCs, the sensors deliver a polarity-selective response among alcohols but no signal for low-polarity aprotic hydrocarbons. The octadecyltrimethoxysilane-modified Ni2[MPc(NH)8] based sensor displays high-performance methanol sensing with fast response (36 s)/recovery (13 s) and a detection limit as low as 10 ppm, surpassing reported room-temperature chemiresistors.
中文翻译:
用于极性选择性化学电阻传感的表面改性酞菁基二维共轭金属有机框架薄膜
二维共轭金属有机框架(2D c -MOF)正在成为化学电阻传感器的电活性材料,但具有快速响应/恢复的选择性传感是一个挑战。基于酞菁的 Ni 2 [MPc(NH) 8 ] 2D c -MOF 薄膜被用作对水和挥发性有机化合物 (VOC) 的极性选择性化学电阻的活性层。通过在 2D c -MOF 薄膜上接枝脂肪族烷基链进行表面疏水改性,减少了分析物扩散到 MOF 主链中,从而在湿度传感过程中显着加快恢复进度(从约 50 秒到约 10 秒)。对于挥发性有机化合物,传感器在醇类中提供极性选择性响应,但对低极性非质子碳氢化合物没有信号。基于十八烷基三甲氧基硅烷改性的 Ni 2 [MPc(NH) 8 ] 传感器表现出高性能甲醇传感,具有快速响应(36 s)/恢复(13 s)和低至 10 ppm 的检测限,超越了报道的室温化学电阻器。
更新日期:2021-05-25
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
用于极性选择性化学电阻传感的表面改性酞菁基二维共轭金属有机框架薄膜
二维共轭金属有机框架(2D c -MOF)正在成为化学电阻传感器的电活性材料,但具有快速响应/恢复的选择性传感是一个挑战。基于酞菁的 Ni 2 [MPc(NH) 8 ] 2D c -MOF 薄膜被用作对水和挥发性有机化合物 (VOC) 的极性选择性化学电阻的活性层。通过在 2D c -MOF 薄膜上接枝脂肪族烷基链进行表面疏水改性,减少了分析物扩散到 MOF 主链中,从而在湿度传感过程中显着加快恢复进度(从约 50 秒到约 10 秒)。对于挥发性有机化合物,传感器在醇类中提供极性选择性响应,但对低极性非质子碳氢化合物没有信号。基于十八烷基三甲氧基硅烷改性的 Ni 2 [MPc(NH) 8 ] 传感器表现出高性能甲醇传感,具有快速响应(36 s)/恢复(13 s)和低至 10 ppm 的检测限,超越了报道的室温化学电阻器。