Cavitand‐Based Pd‐Pyridyl Coordination Capsules: Guest‐Induced Homo‐ or Heterocapsule Selection and Applications of Homocapsules to the Protection of a Photosensitive Guest and Chiral Capsule Formation
作者:Munechika Nakamura、Yoshimi Tsukamoto、Takuro Ueta、Yoshihisa Sei、Takanori Fukushima、Kenji Yoza、Kenji Kobayashi
DOI:10.1002/asia.202000603
日期:2020.7.16
) and Pd(dppp)(OTf)2 self‐assembles into a homocapsule 1 2 ⋅ [Pd(dppp)]4}8+ ⋅ (TfO−)8 (C1 ) or 2 2 ⋅ [Pd(dppp)]4}8+ ⋅ (TfO−)8 (C2 ), respectively, through Pd−Npy coordination bonds. A 1 : 1 : 4 mixture of 1 , 2 , and Pd(dppp)(OTf)2 produced a mixture of homocapsules C1 , C2 , and a heterocapsule 1 ⋅ 2 ⋅ [Pd(dppp)]4}8+ ⋅ (TfO−)8 (C3 ) in a 1 : 1 : 0.98 mole ratio. Selective formation (self‐sorting)
四[[4-(4-吡啶基)苯基]乙炔基(1)或四[4-(4-吡啶基)苯基乙炔基]丙二醇(2)和Pd(dppp)(OTf)2的2:4混合物自组装成一个homocapsule 1 2 ⋅[钯(DPPP)] 4 } 8+ ⋅(TFO - )8(C1)或 2 2 ⋅[钯(DPPP)] 4 } 8+ ⋅(TFO - )8(C2),分别通过Pd-Npy配位键。A 1:1:4的混合物1,2,和Pd(DPPP)(OTF)2产生homocapsules的混合物C1,C2,和一个heterocapsule 1 ⋅ 2 ⋅[钯(DPPP)] 4 } 8+ ⋅(TFO - )8(C3)以1:1:0.98的摩尔比。均质胶囊C1和C2或杂质胶囊C3的选择性形成(自我分选)是在热力学控制下通过客体诱导的包封来控制的。演示了Pd-Npy配位胶囊在1中的应用。胶囊C1用作反式保护纳米容器-4,4'-