Self-organization of dendritic supermolecules, based on isocyanide-gold(I), -copper(I), -palladium(II), and -platinum(II) complexes, into micellar cubic mesophases.
First- and second-generation dendrimers with an isocyanide group as the focal functional point (CN-G(n); n: 1,2) and their corresponding organometallic complexes [MCl(CN-G(n))] (M: Au, Cu), [{CuCl(CN-G(n))2}2], and trans-[MI2(CN-G(n))2] (M: Pd, Pt) have been synthesized. The free ligands and the first-generation complexes do not show mesogenic behavior, but all of the second-generation complexes display a thermotropic micellar cubic mesophase, over a large temperature range, and some of them directly at room temperature. The structure of the mesophase consists of the packing of two, discrete polyhedral micellar aggregates in a three-dimensional cubic Im$\bar 3$m lattice.
Coco
Silverio
S
IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Castilla y León, Spain. scoco@qi.uva.es
Cordovilla
Carlos
C
Donnio
Bertrand
B
Espinet
Pablo
P
García-Casas
María Jesús
MJ
Guillon
Daniel
D
D003300:Copper / Q000737:chemistry*; D003486:Cyanides / Q000737:chemistry*; D050091:Dendrimers / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008823:Micelles; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D010165:Palladium / Q000737:chemistry*; D044367:Phase Transition; D010984:Platinum / Q000737:chemistry*
D003486:Cyanides; D050091:Dendrimers; D046911:Macromolecular Substances; D008823:Micelles; D009942:Organometallic Compounds; D010984:Platinum; D010165:Palladium; D006046:Gold; D003300:Copper