Xibo Wu, Daoliang Wang, Mingming Chen, Chengsha Wei, Shenghui Wei, Ningdong Huang, Liangbin Li, Guobing Zhang. Robust Ordered Bundles of Porous Helical Nanotubes Assembled from Fully Rigid Ionic Benzene-1,3,5-tricarboxamides. Chemistry-a European Jou