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Stimuli-Responsive Naphthalenediimide Cd-MOFs Tuned by Different Aliphatic Dicarboxylic Acids with Extended Spacers
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2022-06-21 , DOI: 10.1021/acs.inorgchem.2c01007 Chen Wang 1 , Guang Zeng 2 , Zi-Xin You 1 , Yong-Heng Xing 1 , Feng-Ying Bai 1 , Li-Xian Sun 3
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2022-06-21 , DOI: 10.1021/acs.inorgchem.2c01007 Chen Wang 1 , Guang Zeng 2 , Zi-Xin You 1 , Yong-Heng Xing 1 , Feng-Ying Bai 1 , Li-Xian Sun 3
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A series of novel Cd metal–organic frameworks (MOFs) (1–9) with different extended spacers with seven kinds of the aliphatic dicarboxylic acids as secondary building linkers based on N,N′-di(4-pyridylacylamino)-1,4,5,8-naphthalenediimide (NDI-A) have been designed and synthesized by changing the volume ratio of solvents under solvothermal conditions. In addition, the secondary building linkers of aliphatic dicarboxylic acids have different spacer lengths, resulting in different structures of complexes 1–9. So, their packing structures are affected by the degree of distortion of the NDI-A ligand, the different aliphatic dicarboxylic acids ligands, and the hydrogen-bonding patterns. Complexes 1–9 showed stimuli-responsive emission tuned by different aliphatic dicarboxylic acids with extended length spacers under UV light irradiation, accompanied by the color change from light orange to dark brown, and achieved reversible photochromic under heating, which indicates that they could serve as secret erasable inks. Moreover, complexes 1–9 exhibited selective vaporchromic behavior to methylamine (MA), and the vaporchromic sample could be recovered after washing with MeOH. It is worth noting that the preparation of poly(vinyl alcohol) (PVA)-NDI-MOF films enables the photochromic and vaporchromic properties of complexes 1–9 to apply in practice. In addition, complexes 1–9 exhibited good fluorescence properties as sensing probes toward 2,4,6-trinitrophenol (TNP) with lower limits of detection. In short, this work provides a broad field to explore the creative NDI-MOF materials with photoactive and luminescent properties.
中文翻译：
具有扩展间隔的不同脂肪族二羧酸调谐的刺激响应萘二亚胺 Cd-MOF
基于N , N '-di(4-pyridylacylamino)-1,4的一系列新型 Cd 金属-有机框架 (MOF) ( 1 – 9 ) 具有不同的扩展间隔，其中七种脂肪族二羧酸作为二级构建接头,5,8-萘二亚胺 (NDI-A) 是通过在溶剂热条件下改变溶剂的体积比设计和合成的。此外，脂肪族二羧酸的二级结构接头具有不同的间隔长度，导致配合物1 – 9的结构不同. 因此，它们的堆积结构受 NDI-A 配体的扭曲程度、不同的脂肪族二羧酸配体和氢键模式的影响。配合物1-9在紫外光照射下表现出由具有延长间隔的不同脂肪族二羧酸调节的刺激响应发射，并伴随着从浅橙色到深棕色的颜色变化，并在加热下实现了可逆的光致变色，这表明它们可以作为秘密可擦墨水。此外，配合物1 – 9对甲胺（MA）表现出选择性的气相变色行为，并且在用MeOH洗涤后可以回收气相变色样品。值得注意的是，聚（乙烯醇）（PVA）-NDI-MOF薄膜的制备使配合物1-9的光致变色和气相致变色性能在实践中得到应用。此外，配合物1 – 9作为对 2,4,6-三硝基苯酚 (TNP) 的传感探针表现出良好的荧光特性，检测限较低。简而言之，这项工作为探索具有光活性和发光特性的创造性 NDI-MOF 材料提供了广阔的领域。
更新日期：2022-06-21
中文翻译：
具有扩展间隔的不同脂肪族二羧酸调谐的刺激响应萘二亚胺 Cd-MOF
基于N , N '-di(4-pyridylacylamino)-1,4的一系列新型 Cd 金属-有机框架 (MOF) ( 1 – 9 ) 具有不同的扩展间隔，其中七种脂肪族二羧酸作为二级构建接头,5,8-萘二亚胺 (NDI-A) 是通过在溶剂热条件下改变溶剂的体积比设计和合成的。此外，脂肪族二羧酸的二级结构接头具有不同的间隔长度，导致配合物1 – 9的结构不同. 因此，它们的堆积结构受 NDI-A 配体的扭曲程度、不同的脂肪族二羧酸配体和氢键模式的影响。配合物1-9在紫外光照射下表现出由具有延长间隔的不同脂肪族二羧酸调节的刺激响应发射，并伴随着从浅橙色到深棕色的颜色变化，并在加热下实现了可逆的光致变色，这表明它们可以作为秘密可擦墨水。此外，配合物1 – 9对甲胺（MA）表现出选择性的气相变色行为，并且在用MeOH洗涤后可以回收气相变色样品。值得注意的是，聚（乙烯醇）（PVA）-NDI-MOF薄膜的制备使配合物1-9的光致变色和气相致变色性能在实践中得到应用。此外，配合物1 – 9作为对 2,4,6-三硝基苯酚 (TNP) 的传感探针表现出良好的荧光特性，检测限较低。简而言之，这项工作为探索具有光活性和发光特性的创造性 NDI-MOF 材料提供了广阔的领域。
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