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Systematic investigation of porous inorganic-organic hybrid compounds with photo-switchable properties

机译:具有光开关特性的多孔无机-有机杂化化合物的系统研究

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摘要

Four new compounds [Co_2 (NDC) _2 (AzBIPY)] (1), [Cu_2 (NDC) _2 (AzBIPY)] (2), [Zn_2 (BPDC) _2 (AzBIPY)] (3) and [Zn_2 (CCA) _2 (AzBIPY)] (4) (with H2NDC: 2,6-naphthalenedicarboxylic acid, AzBIPY: 3-azo-phenyl-4,4>- bipyridine, H2BPDC: 4,4>-biphenyldicarboxylic acid and H2CCA: 4-carboxy-cinnamic acid) were synthesized and characterized. All compounds have paddle-wheel units and photo switchable linker molecules in common. In all four compounds the azo group of the AzBIPY linker molecule protrudes into the pores. For compound 1 and 2 isomerization can be accomplished upon irradiation with UV light (λ = 365 nm) to switch the thermodynamically stable trans-isomer into the cis-isomer. Back switching can be achieved thermally or by irradiation with visible light (λ = 455 nm).
机译:四种新化合物[Co_2(NDC)_2(AzBIPY)](1),[Cu_2(NDC)_2(AzBIPY)](2),[Zn_2(BPDC)_2(AzBIPY)](3)和[Zn_2(CCA) _2(AzBIPY)](4)(其中H2NDC:2,6-萘二甲酸,AzBIPY:3-偶氮-苯基-4,4>-联吡啶,H2BPDC:4,4>-联苯二甲酸和H2CCA:4-羧基-肉桂酸)的合成和表征。所有化合物都有共同的桨轮单元和可光转换的连接分子。在所有四种化合物中,AzBIPY接头分子的偶氮基均伸入孔中。对于化合物1和2,可以在用紫外线(λ= 365 nm)照射后完成异构化,以将热力学稳定的反式异构体转换为顺式异构体。可以通过热或通过可见光(λ= 455 nm)照射来实现反向切换。

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