Design and synthesis of luminescent porous coordination polymers for chromaticity modulation, sensing of nitrobenzene and iodine encapsulation
Design and synthesis of luminescent porous coordination polymers for chromaticity modulation, sensing of nitrobenzene and iodine encapsulation
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DOI：
10.1039/c6ce00960c
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发表时间：
2016-07
期刊：
影响因子：
3.1
通讯作者：
Haijun Wang;F. Cheng;Changchang Zou;Qianqian Li;Yinying Hua;Jingui Duan;W. Jin
中科院分区：
文献类型：
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作者：
Haijun Wang;F. Cheng;Changchang Zou;Qianqian Li;Yinying Hua;Jingui Duan;W. Jin
我们设计并制备了一类由三个C2v对称配体组成的具有高共轭基团的发光多孔配位聚合物(PCPs)。单晶X射线分析表明，它们的孔类型/大小和体积都得到了系统的调节。位于欧盟的NTU-5和NTU-8发射红光。然而，与基于TB的PCP的典型绿色发射相反，NTU-6和NTU-9与TB中心的结合部分增加导致了非常不寻常的蓝色发射。这些独特的电子结构发射显示了不同的电子转移途径，寿命实验进一步证实了这一点。在这些观察结果的鼓舞下，Te-H3L配体和不同的Eu3+/Tb3+离子的摩尔比的简单自组装方法很好地实现了从粉色到蓝色的色度调制。此外，NTU-6和NTU-9在硝基苯传感(猝灭效应系数分别为589.5和445.6 M−1)和I2分子的包埋方面显示出很高的潜力。
We design and prepare a family of luminescent porous coordination polymers (PCPs) constructed from three C2v symmetry ligands with increased conjugation moieties. Single crystal X-ray analyses revealed that their pore types/sizes and volumes were systematically tuned. Eu-based NTU-5 and NTU-8 emit red light. However, in contrast to the typical green emission of Tb-based PCPs, the increased conjugation moieties in NTU-6 and NTU-9 with a Tb center resulted in a very unusual blue emission. These unique emissions from these iso-structures demonstrated varied pathways of electronic transfer, which were further confirmed by lifetime experiments. Encouraged by these observations, the chromaticity modulation from pink to blue has been well realized by a facile method of self-assembly of the Te-H3L ligand and varied molar ratios of Eu3+/Tb3+ ions. Additionally, NTU-6 and NTU-9 showed high potential for nitrobenzene sensing (quenching effect coefficients: 589.5 and 445.6 M−1) and encapsulation of I2 molecules.