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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >A mechanochromic cyclemetalated cationic Ir(III) complex with AIE activity by strategic modification of ligands
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A mechanochromic cyclemetalated cationic Ir(III) complex with AIE activity by strategic modification of ligands

机译:通过配体的战略性改性,机械光学型环丙烯酸阳离子IR(III)复合物与AIE活动

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摘要

Two new aggregation-induced emission (AIE)-active cyclemetalated cationic Ir(m) complexes have been rationally designed and synthesized by introducing O-H substituents into Schiff base ligands. pi-Hydrogen bonding is successfully exploited for the first time to realize the mechanochromic luminescence (MCL) property by the synergistic effect of O-H and F substituents in complex 1. An X-ray crystal structure analysis of the two complexes suggests that the intramolecular hydrogen bonding effectively restricted the molecular motions, thus causing typical AIE characteristics. More importantly, a loosely packed structure constructed from intermolecular hydrogen bonding interactions (O-H center dot center dot center dot pi and C-H center dot center dot center dot F) is obtained, and it is susceptible to mechanical stimulation. Powder X-ray diffraction (PXRD) studies also prove that the MCL behavior of complex 1 is caused by the reversible phase transition from crystalline to amorphous state under grinding and solvent recrystallization, leading to a change in emission colors. A re-writable phosphorescence data recording device was fabricated using complex 1 as the active material. Our molecular design strategies provide a new avenue for achieving efficient phosphorescence materials with AIE and MCL properties.
机译:通过将O-H取代基引入Schiff碱配体,两种新的聚集诱导的发射(AIE) - 活性衔接性阳离子IR(M)配合物已经合理设计和合成。首次成功利用PI-氢键来实现通过复合物1中的OH和F取代基的协同作用来实现机械变色发光(MCL)性能。两种复合物的X射线晶体结构分析表明分子内氢键有效地限制了分子运动,从而引起典型的AIE特征。更重要的是,获得由分子间氢键相互作用(O-H中心点中心点中心点PI和C-H中心点中心点FOT F)构成的松散填充结构,并且易于机械刺激。粉末X射线衍射(PXRD)研究还证明了复合物1的MCL行为是由在研磨和溶剂重结晶下从结晶与无定形状态的可逆相转变引起的,导致发射颜色的变化。使用复合物1作为活性材料制造可重用的磷光数据记录装置。我们的分子设计策略为实现了AIE和MCL性质的高效磷光材料提供了新的途径。

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    Northeast Normal Univ Key Lab Nanobiosensing &

    Nanobioanal Univ Jilin P Dept Chem 5268 Renmin St Changchun 130024 Jilin Peoples R China;

    Northeast Normal Univ Key Lab Nanobiosensing &

    Nanobioanal Univ Jilin P Dept Chem 5268 Renmin St Changchun 130024 Jilin Peoples R China;

    Northeast Normal Univ Key Lab Nanobiosensing &

    Nanobioanal Univ Jilin P Dept Chem 5268 Renmin St Changchun 130024 Jilin Peoples R China;

    Northeast Normal Univ Key Lab Nanobiosensing &

    Nanobioanal Univ Jilin P Dept Chem 5268 Renmin St Changchun 130024 Jilin Peoples R China;

    Northeast Normal Univ Key Lab Nanobiosensing &

    Nanobioanal Univ Jilin P Dept Chem 5268 Renmin St Changchun 130024 Jilin Peoples R China;

    Northeast Normal Univ Key Lab Nanobiosensing &

    Nanobioanal Univ Jilin P Dept Chem 5268 Renmin St Changchun 130024 Jilin Peoples R China;

    Northeast Normal Univ Key Lab Nanobiosensing &

    Nanobioanal Univ Jilin P Dept Chem 5268 Renmin St Changchun 130024 Jilin Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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