A 3D Polar Nanotubular Coordination Polymer with Dynamic Structural Transformation and Ferroelectric and Nonlinear-Optical Properties

A chiral coordination nanotube, [Cd3(BPT)2(H2O)9]·2H2O (Cd-1; BPT = biphenyl-3,4′,5-tricarboxylate), has been synthesized from achiral components and structurally characterized. It consists of homochiral channels based on right-handed helical chains and shows an interdigitated interaction to give a chiral 3D network. The chiral nanotubular framework exhibts dynamic structural transformation upon removal of the guest molecules, and the polarity of this compound induces it to display both ferroelectric and nonlinear-optical properties.一种手性配位纳米管[Cd₃(BPT)₂(H₂O)₉]·2H₂O（记为Cd-1；BPT为联苯-3,4′,5-三羧酸根（biphenyl-3,4′,5-tricarboxylate））由非手性组分合成并完成结构表征。该化合物以右手螺旋链为结构基元构筑同手性通道，并通过交错相互作用形成手性三维网络骨架。该手性纳米管框架在脱除客体分子后会发生动态结构转变；同时该化合物的极性使其同时展现铁电性与非线性光学性能。