Download Crystallographically Ordered Polymers by Daniel J., ed. Sandman PDF

By Daniel J., ed. Sandman

content material: totally ordered macromolecules and their houses : present propositions / Daniel J. Sandman --
Electron spin resonance spectroscopy of triplet electron pairs in diacetylene crystals / Hans Sixl --
Structural reviews of novel polydiyne fabrics / R.J. Butera, R.P. Grasso, Mrinal ok. Thakur, and J.B. Lando --
Four-center-type photopolymerization of unsymmetrically substituted diolefin crystals : attribute positive aspects / M. Hasegawa, okay. Saigo, S. Kato, and H. Harashina --
Solid-state polymerization of 1,4-disubstituted butadienes in layered constructions / B. Tieke and G. Chapius --
Polymerization in crystalline inclusion compounds / Mario Farina, Giuseppe Di Silvestro, and Piero Sozzani --
layout of a solid-state response : crystal constitution and solid-state polymerization of bis(propiolato)tetraaquozinc(ii) / C.A. sales space, Bruce M. Foxman, and J.D. Jaufmann --
Dynamics of solid-state polymerization / Paras N. Prasad --
interplay of halogens with unmarried crystals of poly(1,6-di-N-carbazolyl-2,4-hexadiyne) / Daniel J. Sandman, B.S. Elman, G.P. Hamill, J. Hefter, and Christopher S. Velazquez --
Structural and spectroscopic reviews of polydiacetylenes / D. Bloor --
Urethane-substituted polydiacetylenes : solid-state polymerization, crystal optics, and conformational transitions / R.R. probability, H. Eckhardt, M. Swerdloff, R.R. Federici, J.S. Szobota, E.A. Turi, D.S. Boudreaux, and M. Schott --
digital spectra of a sequence of polydiacetylene crystals / C.J. Eckhardt, J. Sartwell, M. Morrow, and H. Müller --
Nonlinear optical and excited-state approaches in polydiacetylenes : measurements utilizing picosecond and femtosecond time scales / Gary M. Carter, Mrinal okay. Thakur, John V. Hryniewicz, Yung Jui Chen, and Stephen E. Meyler --
Nonlinear optics : natural and polymeric structures / A.F. Garito, Y.M. Cai, H.T. guy, and O. Zamani-Khamiri --
prolonged Pariser-Parr-Pople version for polydiacetylene excitations / Z.G. Soos, S. Mazumdar, and S. Kuwajima --
Solitary wave acoustic polaron movement on polydiacetylene chains / K.J. Donovan and E.G. Wilson --
Time-resolved photoconduction within the polymer of the bis(p-toluenesulfonate) of 2,4-hexadiyne-1,6-diol / T. Blum and H. Bässler --
Solid-state response of poly(1,6-di-N-carbazolyl-2,4-hexadiyne) with electrophiles : a ¹³C cross-polarization/magic perspective spinning NMR research / James P. Yesinowski, Hellmut Eckert, Eckert Sandman, and Christopher S. Velazquez --
Electron paramagnetism in poly(1,6-di-N-carbazolyl-2,4-hexadiyne) and its bromine derivatives / M.T. Jones, J. Roble, and Daniel J. Sandman --
courting among constitution and mechanical houses of polydiacetylenes / R.J. Young.

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Extra resources for Crystallographically Ordered Polymers

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The croeepolymerized material may be thought of as a composite structure — c r y s t a l l i n e domains which have croeepolymerized and,therefore, have a very r i g i d two dimensional structure and amorphous (unpolymerized The crystal structure polyO, poly(l,8-nonadiyne), (n 8 and 5 respectively i n figure IB) and t h e i r croeepolymerized products have been determined, and a q u a l i t a t i v e picture of the crosepolymerization process has been inferred from these structure analyses (2,3).

The color change i s dependent upon the degree of crosspolymerization and i s somewhat r e v e r s i b l e . For example, P18N which has been exposed to 30 seconds of UV i r r a d i a t i o n i s grey-blue i n color. Upon exposure to methylene chloride, the sample immediately turns yellow and remains yellow a f t e r drying. A sample which has been given a 1 minute UV dose i s blue, and a f t e r solvent treatment i t also turns yellow. However, unlike the 30 second sample, the 1 minute sample takes on a s l i g h t purple cast a f t e r drying.

Photopolymerization of the Ethyl Methyl 1,4-Phenylenediacrylate _I (_ R 1 » R : Et) Crystal (13a). Finely powdered crystals of I ( R : Me, R : Et) were dispersed i n 500 ml of Η 0 containing a few drops of a surfactant (NIKK0L TL-10FF) and then, under rigorous agitation, irradiated for 27 h by means of a l i g h t source set i n the center of the flask (500 mL) under a nitrogen atmosphere at room temperature (15-25 °C). A 500W high pressure mercury lamp within an uranium glass f i l t e r was used as the l i g h t source.

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