Reference

RAFT synthesis of linear and star-shaped light harvesting polymers using di- and hexafunctional ruthenium polypyridine reagents

RAFT synthesis of linear and star-shaped light harvesting polymers using di- and hexafunctional ruthenium polypyridine reagents. Chen, Ming; Ghiggino, Kenneth P.; Launikonis, Anton; Mau, Albert W.In this study， 649558-85-0 and 109073-77-0 are also used. H.; Rizzardo, Ezio; Sasse, Wolfgang H. F.; Thang, San H.; Wilson, Gerard J. (School of Chemistry, The University of Melbourne, Victoria 3010, Australia). Journal of Materials Chemistry, 13(11), 2696-2700 (English) 2003 Royal Society of Chemistry. CODEN: JMACEP. ISSN: 0959-9428. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 78 The syntheses of linear and star-shaped light harvesting polymers with well defined structure and narrow mol. wt. distribution are described. These polymers have ruthenium polybipyridine moieties as the energy trap cores and styrene functionalized coumarin monomers as the light absorbing antenna chromophores. The polymers have been made by reversible addn.-fragmentation chain transfer (RAFT) polymn. using di- or hexafunctional ruthenium-contg. RAFT agents. The resulting ruthenium-contg. polymers have narrow mol. wt. distribution (polydispersity < 1.1) and exhibit energy transfer efficiencies of up to 60% between the coumarin donor dyes and the ruthenium acceptor chromophores. .

A novel method for synthesizing 4,4'-bis(hydroxymethyl)-2,2'-bipyridine

A novel method for synthesizing 4,4'-bis(hydroxymethyl)-2,2'-bipyridine. Su, Zhong-Min; Chen, Li-Hua; Wu, Li-Xin; Xu, Hong-Bin; Zhu, Dong-Xia; Wang, Rong-Shun (The Chemistry Department, Functional Material Institute, Northeast Normal University, Changchun 130024, Peop. Rep. China). Chemical Research in Chinese Universities, 18(3), 345-347 (English) 2002 Higher Education Press. CODEN: CRCUED. ISSN: 1005-9040. DOCUMENT TYPE: Journal CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) There are several paths for synthesizing 4,4'-bis(hydroxymethyl)-2,2'-bipyridine, but most of them need strict exptl. conditions that are not easy to be overcome. The product was prepd. via the oxidn. of 4,4'-dimethyl-2,2'-bipyridine, followed by esterification and redn. The yield increases and the reaction conditions become genial in contrast to those of other methods. The mol. structure of the final product was confirmed by means of elemental anal., IR, 1H NMR and MS spectra.Except for chemicals metioned above, 71071-46-0 and 109073-77-0 are also used. .