title: Polymorphism in high-crystalline-stability metal-organic nanotubes.
abstract: By application of mixed organic ligands of 5-amino-2,4,6-triiodoisophthalic acid (H(2)ATIBDC) and 4,4'-bipyridine (bpy) to assemble with Zn ions at room temperature, two novel polymorphic structures, Zn(ATIBDC)(bpy).3H(2)O (denoted as MONT-1 and MONT-2), possessing one-dimensional metal-organic nanotubular structures have been synthesized and characterized. MONT-1 was generated by connection of the zero-dimensional Zn-bpy squares through the bridging ATIBDC ligands, while MONT-2 was formed by connection of the one-dimensional Zn-bpy helix through the ATIBDC ligands. Both nanotubes possess highly crystalline stabilities and can absorb the uncoordinated water molecules reversibly.
authors.affiliation: Key Lab of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
authors.forename: Fangna
authors.initials: F
authors.lastname: Dai
authors.forename: Haiyan
authors.initials: H
authors.lastname: He
authors.forename: Daofeng
authors.initials: D
authors.lastname: Sun
mesh_terms: D003460:Crystallization; D008024:Ligands; D008958:Models, Molecular; D043942:Nanotubes / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D013696:Temperature; D014283:Triiodobenzoic Acids / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
chemical_list: D008024:Ligands; D009942:Organometallic Compounds; D011725:Pyridines; D014283:Triiodobenzoic Acids; C480700:5-amino-2,4,6-triiodoisophthalic acid; D015032:Zinc; C034306:4,4'-bipyridyl