Trimethylsilyl Group Assisted Stimuli Response: Self-Assembly of 1,3,6,8-Tetrakis((trimethysilyl)ethynyl)pyrene
Trimethylsilyl Group Assisted Stimuli Response: Self-Assembly of 1,3,6,8-Tetrakis((trimethysilyl)ethynyl)pyrene
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DOI：
10.1021/acs.organomet.6b00781
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发表时间：
2017-01
期刊：
影响因子：
2.8
通讯作者：
Feng Xu;T. Nishida;K. Shinohara;Li-fen Peng;M. Takezaki;Takahiro Kamada;H. Akashi;Hiromu Nakamura;Kouki Sugiyama;K. Ohta;A. Orita;J. Otera*
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文献类型：
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作者：
Feng Xu;T. Nishida;K. Shinohara;Li-fen Peng;M. Takezaki;Takahiro Kamada;H. Akashi;Hiromu Nakamura;Kouki Sugiyama;K. Ohta;A. Orita;J. Otera*
用空间庞大的三甲基甲硅烷基取代 1,3,6,8-四乙炔基芘，可实现四种分子堆积模式：两种多晶型物（三斜晶系（Y 型）和“松散”晶体 Colho（OK 型））、“刚性”液晶相 Colho（OC 型）和无定形相（OA 型），它们在紫外光下以不同波长发射荧光。这四个相可以通过物理刺激相互转化，例如加热、用研钵和杵研磨以及暴露于有机溶剂蒸气。
Substitution of 1,3,6,8-tetraethynylpyrene with sterically bulky trimethylsilyl groups enabled four modes of molecular packing, two polymorphs (triclinic system (Y-form) and “loose” crystal Colho (OK-form)), a ”rigid” liquid crystalline phase Colho (OC-form), and an amorphous phase (OA-form), which emitted fluorescence at different wavelengths under UV light. The four phases could be interconverted by physical stimuli such as heating, grinding by mortar and pestle, and exposing to the vapor of organic solvents.