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Fabrication of [Cu2(bdc)2(bpy)]n thin films using coordination modulation-assisted layer-by-layer growth†
CrystEngComm ( IF 2.6 ) Pub Date : 2018-02-16 00:00:00 , DOI: 10.1039/c7ce02031g Ruhollah Khajavian 1, 2, 3, 4 , Kamal Ghani 1, 2, 3, 4
CrystEngComm ( IF 2.6 ) Pub Date : 2018-02-16 00:00:00 , DOI: 10.1039/c7ce02031g Ruhollah Khajavian 1, 2, 3, 4 , Kamal Ghani 1, 2, 3, 4
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The processing of metal–organic frameworks as films is the first step toward localizing them for device fabrication. Herein, we investigated the fabrication of polycrystalline, phase pure and highly oriented [Cu2(bdc)2(bpy)]n thin films on bare and chemically modified mesoporous titania surfaces, using a modified layer-by-layer method. While a film consisting of randomly oriented crystals was formed on a bare TiO2 surface, we were able to show that [Cu2(bdc)2(bpy)]n nanoplates in the thin film could adopt perpendicular alignment upon the addition of acetic acid as a modulating agent. It was found that the addition of acetic acid promotes the growth of crystals mostly along [010] direction, provided that it is added to the metal solution. The effects of the modulator addition sequence and amount, reaction temperature, immersion time and reactant concentrations have been investigated. In addition, 3,4-dihydroxybenzoic acid and isonicotinic acid were also used to study the effect of surface functionality. Our primary results indicate that large, oriented crystalline domains could be formed on both surfaces independent of the functionality type. Benefiting from their large crystalline domains, films grown on modified surfaces exhibit higher thermal and water stability in comparison with the film grown on a bare surface.
中文翻译：
使用协调调制辅助的逐层生长法制备 [Cu 2（bdc）2（bpy）] n薄膜†
将金属有机框架加工成薄膜是将其本地化以用于设备制造的第一步。本文中，我们研究了使用改良的逐层方法在裸露的和化学修饰的介孔二氧化钛表面上制备多晶，相纯且高度取向的[Cu 2（bdc）2（bpy）] n薄膜的方法。虽然在裸露的TiO 2表面上形成了由随机取向的晶体组成的膜，但我们能够证明[Cu 2（bdc）2（bpy）] n薄膜中的纳米板在添加乙酸作为调节剂后可采用垂直排列。发现添加乙酸可以促进晶体大部分沿[010]方向生长，只要将其添加到金属溶液中即可。已经研究了调节剂添加顺序和量，反应温度，浸渍时间和反应物浓度的影响。此外，还使用3,4-二羟基苯甲酸和异烟酸研究表面功能的影响。我们的主要结果表明，可以在两个表面上形成大的，定向的晶畴，而与功能类型无关。得益于其大的晶域，
更新日期：2018-02-16
中文翻译：
使用协调调制辅助的逐层生长法制备 [Cu 2（bdc）2（bpy）] n薄膜†
将金属有机框架加工成薄膜是将其本地化以用于设备制造的第一步。本文中，我们研究了使用改良的逐层方法在裸露的和化学修饰的介孔二氧化钛表面上制备多晶，相纯且高度取向的[Cu 2（bdc）2（bpy）] n薄膜的方法。虽然在裸露的TiO 2表面上形成了由随机取向的晶体组成的膜，但我们能够证明[Cu 2（bdc）2（bpy）] n薄膜中的纳米板在添加乙酸作为调节剂后可采用垂直排列。发现添加乙酸可以促进晶体大部分沿[010]方向生长，只要将其添加到金属溶液中即可。已经研究了调节剂添加顺序和量，反应温度，浸渍时间和反应物浓度的影响。此外，还使用3,4-二羟基苯甲酸和异烟酸研究表面功能的影响。我们的主要结果表明，可以在两个表面上形成大的，定向的晶畴，而与功能类型无关。得益于其大的晶域，
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