title: Synthesis and chirality control of bulk crystals and nanocrystals: from a right-handed nonpolar chain to a left-handed polar chain.
abstract: Both bulk crystals and nanocrystals of two helical complexes, [Cu(μ2-L)(H2O)]n (1) and {[Cu(μ2-L)(H2O)]·2H2O}n (2) (H2L = thiazolidine-2,4-dicarboxylic acid), have been synthesized with the chiralities of right-handedness (1) and left-handedness (2), respectively. 4-Cyanopyridine and poly(vinylpyrrolidone) (PVP) have been applied to control the synthesis of complexes with different helicities in bulk-crystal and nanocrystal forms, respectively. 2 can be irreversibly transformed to 1 under heating. Associated with the conformation changing, the symmetry alters between nonpolar and polar space groups.
authors.affiliation: Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry (MOE), Nankai University, Tianjin 300071, People's Republic of China.
authors.forename: Yan-Yan
authors.initials: YY
authors.lastname: Yin
authors.forename: Yan-Li
authors.initials: YL
authors.lastname: Zhao
authors.forename: Jian-Gong
authors.initials: JG
authors.lastname: Ma
authors.forename: Xiao-Chang
authors.initials: XC
authors.lastname: Cao
authors.forename: Peng
authors.initials: P
authors.lastname: Cheng
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008958:Models, Molecular; D015394:Molecular Structure; D009570:Nitriles / Q000737:chemistry; D011205:Povidone / Q000737:chemistry; D011725:Pyridines / Q000737:chemistry; D013237:Stereoisomerism; D053778:Thiazolidines / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D009570:Nitriles; D011725:Pyridines; D053778:Thiazolidines; C062649:2-carboxythiazolidine-4-carboxylic acid; D003300:Copper; C494727:4-cyanopyridine; D011205:Povidone