| 自组装的四（4-N，N-二乙胺基苯基）卟啉/多酸（钠）有机/无机复合薄膜及其气敏性质 | |
| Self-assembled Organic-Inorganic Hybrid Nanocomposites of Tetrakis(4-N,N-diethylaminophenyl)Porphyrin/Polyacid (Sodium Polyacid) and Highly Sensitive Responses toward NO2 | |
| 摘要: 选择Keggin型12-磷钨酸（TPA）及其钠盐（NaTP）水溶液为亚相，用四（4-N，N-二乙胺基苯基）卟啉化合物（H2TNPP）自组装膜为功能模板，釆用低成本的QLS法成功制备了2种新型有机/无机复合材料：H2TNPP/TPA，H2TNPP/NaTP QLS薄膜。薄膜结构、形貌及半导体性质测试发现：H2TNPP分子在H2TNPP/TPA，H2TNPP/NaTP复合膜中均采取H-聚集模式，TPA亚相上H-聚集程度更大。而在纯H2TNPP膜中其为J-聚集模式。3种薄膜表面均为纳米颗粒形貌，以H2TNPP/NaTP膜表面颗粒均一，颗粒尺寸最小（~60 nm），H2TNPP/TPA膜表面缺陷较多，颗粒尺寸最大（~150 nm）。薄膜导电性依次为H2TNPP/NaTP（3.00×10-5 S·cm-1）>H2TNPP/TPA（2.49×10-5 S·cm-1）>H2TNPP膜（1.53×10-5 S·cm-1）。常温气敏测试发现：3种薄膜在30 s内对浓度小于1.88 mg·m-3的NO2气体都有响应，灵敏度依次为H2TNPP/NaTP（43%）>H2TNPP膜（16%）>H2TNPP/TPA（4.5%）。具有最小颗粒尺寸和最高导电性的H2TNPP/NaTP复合薄膜具有最高的灵敏度，并且对NO2检测限低至0.094 mg·m-3。显示出了非常高的实际应用价值。本研究为制备低成本、高灵敏度、环境友好的快速室温NO2气敏器件提供了一种新的策略。 | |
| 关键词: 卟啉 多酸 自组装 有机/无机薄膜 气敏性质 NO2 室温响应 | |
| 基金项目: 国家自然科学基金（No.21371073）、中央高校基本科研业务费专项资金（No.16CX06022A）、国家级大学生创新创业训练计划（No.201710425075）和中国石油大学（华东）大学生创新创业训练计划（No.20161399）资助项目。 | |
| Abstract: The novel H2TNPP/TPA and H2TNPP/NaTP organic-inorganic hybrid nanocomposites [H2TNPP=tetrakis(4-N,N-diethylaminophenyl)porphyrin, TPA=the phosphotungstic acid and NaTP=sodium phosphotungstate] are fabricated by a simple QLS method. H-type molecular stacking mode with a tilted edge-on orientation of the H2TNPP has been formed in the hybrid films. The intermolecular face-to-face π-π interaction and film microstructures are effectively improved by introducing inorganic TPA and NaTP within the organic H2TNPP films, compared with the pure H2TNPP film. In particular, good film-conductivity, smaller grain size and large specific surface area of H2TNPP/NaTP hybrid film render it excellent sensing property for NO2 gas with the lowest detection limit of 0.094 mg·m-3 and highest sensitivity (43%) among the three kinds of films in room temperature, suggesting the great potential of semiconducting H2TNPP/NaTP organic-inorganic hybrid nanocomposites in the field of chemical sensors. The present result provides a new strategy to obtain high performance room-temperature gas sensors by the construction of organic/inorganic hybrid structure combined with a low-cost solution-based method. | |
| Keywords: porphyrin polyacid Self-Assombly organic/inorganic composites gas sensor NO2 room temperature response | |
| 投稿时间：2017-07-26 修订日期：2017-08-31 | |
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| 邢传旺,李东,刘承奔,孔霞,李希友,陈艳丽,姜建壮.自组装的四（4-N，N-二乙胺基苯基）卟啉/多酸（钠）有机/无机复合薄膜及其气敏性质[J].无机化学学报,2017,33(11):2110-2116. | |
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