Polyether macromolecules, synthesis

Hawker, C. J., Malmstrom, E. E., Frank, C. W., and Kampf, J. P. 1997. Exact linear analogs of dendritic polyether macromolecules design, synthesis, and unique properties J. Am. Chem. Soc., 119, 9903-9904. 

Wagener, K.B. Brzezinska, K. Acyclic diene metathesis (ADMET) polymerization Synthesis of unsaturated polyethers. Macromolecules 1991, 24, 5273-5277. 

Uhrich KE, Hawker CJ, Frechet JMJ, Turner SR (1992) One-pot synthesis of hyperbranched polyethers. Macromolecules 25 45834 587... 

F.D. Konstandakopoulou, K.G. Gravalos, and J.K. Kallitsis, Synthesis and characterization of processible aromatic-aliphatic polyethers with quinquephenyl segments in the main chain for light-emitting applications, Macromolecules, 31 5264-5271, 1998. 

Smith, D. W., Jr. and Babb, D. A. 1996. Perfluorocyclobutane aromatic polyethers. Synthesis and characterization of new siloxane-containing fluoropolymers. Macromolecules 29 852-860. 

It is also possible to introduce polymerizable groups at the focal point of dendritic macromolecules and a number of authors have demonstrated the synthesis of novel hybrid dendritic-linear block copolymers by this methodology [69-73]. Initial experiments in the use of the dendritic macromonomers involved the preparation of a series of polyether dendrimers, such as the third generation derivative, 37, which contains a single styrene at its focal point [74]. Copolymerization of 37 with styrene then affords a hybrid block copolymer, 38, in which... 

A wide range of other monomer units have been employed in the synthesis of hyperbranched macromolecules and the range of structures obtained is nearly as diverse as those for dendritic macromolecules. For example, hyperbranched polyphenylenes [93], polyesters [104, 107-109], polyethers [110-112], polyamides [113], polysilanes [114], polyetherketones [100], polycarbazoles [115], etc. [116-118] have been prepared. Interestingly, a number of groups have also used growth processes other than condensation chemistry to prepare hyper-... 

Recent work on the synthesis, structure and some properties of macromolecules bearing furan rings is discussed. Two basic sources of monomers are considered, viz. furfural for monomers apt to undergo chain polymerization and hydroxymethylfurfural for monomers suitable for step polymerization.Within the first context, free radical, catiomc and anionic systems are reviewed and the peculiarities arising from the presence of furan moieties in the monomer and/or the polymer examined in detail. As for the second context, the polymers considered are polyesters, polyethers, polyamides and polyurethanes. Finally, the chemical modification of aU these oligomers, polymers and copolymers is envisaged on the basis of the unique reactivity of the furan heterocycle. 

Cho B-K, Jain A, Nieberle J, Mahajan S, Wiesner U, Gruner SM, Tuerk S, Raeder HJ. Synthesis and self-assembly of amphiphihc dendrimers based on ahphatic polyether-type dendritic cores. Macromolecules 2004 37 4227-4234. 

Maynard HD, Grubbs RH (1999) Synthesis of functionalized polyethers by ring-opening metathesis polymerization of unsaturated crown ethers. Macromolecules 32 6917-6924... 

Scamporrino, E. and Vitalini, D., Main-Chain Porphyrin Polymers. 1. Synthesis and Characterization of Polyethers Containing Porphyrin Units and Their Metal Derivatives, Macromolecules, 25, 1625, 1992. 

I. Synthesis and characterization of polyethers containing porphyrin units and their metal derivatives, Macromolecules 25(6), 1992, 1625-1632. 

Oyaizu K, Kawamoto T, Suga T et al (2010) Synthesis and charge transport properties of redox-active nitroxide polyethers with large site density. Macromolecules 43(24) 10382-10389... 

Oyaizu K, Suga T, Yoshimura K et al (2008) Synthesis and characterization of radical-bearing polyethers as an electrode-active material for (nganic secondary batteries. Macromolecules 41(18) 6646-6652... 

The conformational properties of macromolecules with mesogenic groups in the main chain were studied in a series of studies by VJ. Tsvetkov et al. for alkylene aromatic polyethers [21, 100-103] with a different structure and length of the flexible spacers [101-103] and for some copolymers containing mesogenic fragments in the main chain [100]. The synthesis and features of formation of the mesophase in these polymers are described in [104, 105] and in Chapter 5 of the present book. The orientational order was also studied by IR spectroscopy for alkylene aromatic polyethers in [106, 107]. 

The first example of an iterative synthetic approach toward dendrimers has been reported in 1978 by Vbgtle [3], who called it cascade synthesis . In the mid-1980s, Tomalia [4] and Newkome [5] independently reported the divergent synthesis of two new families of dendrimers poly(amidoamine) and the so-called arborols , respectively. A growing interest on these macromolecules lead in 1990 to the convergent synthesis of aromatic polyether dendrimers by Frechet [6]. The two different synthetic approaches can be explained as follows ... 

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