Reference

Synthesis and luminescent character of PPV oligomers containing oxadiazole

Synthesis and luminescent character of PPV oligomers containing oxadiazole. Zhang, Tian-lin (Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, Peop. Rep. China). Hecheng Huaxue, 12(2), 180-183 (Chinese) 2004 Hecheng Huaxue Bianjibu. CODEN: HEHUE2. ISSN: 1005-1511. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) PPV oligomers contg. 1,3,4-oxadiazole are one kind of luminescence materials with highly transporting electrons. 876-08-4 and 16157-36-1 are also in the experiment. 2,5-Bis{4-[2-(substituted phenyl) vinyl]phenyl}-1,3,4-oxadiazoles was synthesized by Wittig-Horner reaction, and their chem. structures were detd. with spectroscopic techniques. Their structures show trans-vinylene character according to IR and 1H NMR. .

The Use of Block Copolymers to Systematically Modify Photochromic Behavior

All Rights Reserved. The Use of Block Copolymers to Systematically Modify Photochromic Behavior. Such, Georgina K.; Evans, Richard A.; Davis, Thomas P. (CSIRO Molecular and Health Technologies, Clayton 3169 VIC, Australia). Macromolecules, 39(26), 9562-9570 (English) 2006 American Chemical Society. CODEN: MAMOBX. ISSN: 0024-9297. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 73 Reversible addn. fragmentation chain transfer (RAFT) living radical polymn. has been utilized successfully to allow the systematic tuning of photochromic switching rates in a rigid, ophthalmic quality, polymer matrix. Block copolymers of poly(styrene) and poly(Bu acrylate) were synthesized using a RAFT functionalized photochromic (spirooxazine) dye. Thus the photochromic dye initiated the polymns. and allowed the known and precise placement of the dye at the start of the block copolymer chains. The photophys. investigation of these more complex architectures demonstrated that systematic tuning of photochromic rates could be achieved by changing the length and choice of either block. The photochromic rates were significantly more sensitive to the presence of low glass-transition temp. poly(Bu acrylate) than high glass-transition temp. 876-08-4 and 109-79-5 are just another two chemicals used in this study. poly(styrene), even if the poly(Bu acrylate) was the more distant second block from the spirooxazine. .