Controlled Polymerization of Phenylacetylenes Using Well-Defined Rhodium Catalysts

摘要

This article deals with (1) the controlled polymerization of an optically active phenylacetylene (PA) derivative using well defined rhodium (Rh) catalyst, [(nbd)Rh{C(Ph)=CPh_2}(PPh_3)] and the study on the molecular weight dependence of the chirality (degree of helix formation and predominance of one-handed helicity) of the formed polymers, (2) examination of the polymer end structures by matrixassisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry, (3) development of a novel Rh complex coordinated by a tridentate ligand, and [{nbd- (CH_2)_4PPh_2}Rh{C(Ph)=CPh_2}] and the polymerization of PA in a controlled manner.