Platinum(II) Metallomesogens: New External-Stimuli-Responsive Photoluminescence Materials.
Platinum(II) Metallomesogens: New External-Stimuli-Responsive Photoluminescence Materials.
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DOI：
10.1002/chem.201601115
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发表时间：
2016-07
期刊：
影响因子：
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通讯作者：
C. Cuerva;J. Campo;M. Cano;C. Lodeiro
中科院分区：
文献类型：
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作者：
C. Cuerva;J. Campo;M. Cano;C. Lodeiro
新的双二异喹啉官能化吡唑，[Hpz(R(n,n)iq) ] (R(n,n)=C6 H3 (OCn H2n+1 )2 ; n=4, 6, 8, 10, 12, 14, 16, 18)，已被战略性地设计和合成，以将介晶和发光特性诱导到相应的双(异喹啉基吡唑酯)铂(II)络合物[Pt(pz(R(n,n)iq) )2 ]。热研究表明，所有铂 (II) 化合物在极宽的温度范围内（大多数情况下高于 300 °C）均表现出柱状中间相。还研究了溶液和固态下的光物理行为。由于 Pt⋅⋅⋅Pt 相互作用的形成，铂衍生物的弱绿色发射在中间相变成亮橙色。此外，复合物对多种外部输入敏感，例如温度、机械研磨、压力、溶剂和蒸汽。在此基础上，它们被用作聚乙烯吡咯烷酮或聚甲基丙烯酸甲酯聚合物基质的掺杂剂，以实现刺激响应薄膜。
New dicatenar isoquinoline-functionalized pyrazoles, [Hpz(R(n,n)iq) ] (R(n,n)=C6 H3 (OCn H2n+1 )2 ; n=4, 6, 8, 10, 12, 14, 16, 18), have been strategically designed and synthesized to induce mesomorphic and luminescence properties into the corresponding bis(isoquinolinylpyrazolate)platinum(II) complexes [Pt(pz(R(n,n)iq) )2 ]. Thermal studies reveal that all platinum(II) compounds exhibit columnar mesophases over an exceptionally wide temperature range, above 300 °C in most cases. The photophysical behavior was also investigated in solution and in the solid state. As a consequence of the formation of Pt⋅⋅⋅Pt interactions, the weak greenish emission of the platinum derivatives turns bright orange in the mesophase. Additionally, the complexes are sensitive to a great variety of external inputs, such as temperature, mechanical grinding, pressure, solvents, and vapors. On this basis, they are used as dopant agents of a polyvinylpyrrolidone or poly(methyl methacrylate) polymer matrix to achieve stimuli-responsive thin films.