Chemistry

Crystallographically Ordered Polymers by Daniel J., ed. Sandman

By Daniel J., ed. Sandman

content material: absolutely ordered macromolecules and their homes : present propositions / Daniel J. Sandman --
Electron spin resonance spectroscopy of triplet electron pairs in diacetylene crystals / Hans Sixl --
Structural reports 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 factors / M. Hasegawa, okay. Saigo, S. Kato, and H. Harashina --
Solid-state polymerization of 1,4-disubstituted butadienes in layered buildings / 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 stories 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 chain of polydiacetylene crystals / C.J. Eckhardt, J. Sartwell, M. Morrow, and H. Müller --
Nonlinear optical and excited-state procedures 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 learn / 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 --
dating among constitution and mechanical homes of polydiacetylenes / R.J. Young.

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The method works best i f the monomer i s very soluable i n the extracting solvent, and the polymer i s t o t a l l y insoluble. For the macromonomer systems under discussion here, the extraction method can not be used for a number of reasons. The most important reason i s that d i f f e r e n t parts of a single macromonomer chain could possibly be i n a reacted region and an unreacted region at the same time. Since t h i s chain would be rendered insoluble by inclusion i n a reacted region, i t would remain with the insoluble portion of the sample.

W. C. ; ACS Symposium Series; American Chemical Society: Washington, DC, 1987. 48 CRYSTALLOGRAPHIC ALLY ORDERED POLYMERS TABLE I I . Photochemical Behavior of Unsymmetric D i o l e f i n Crystals i n Groups (I) and (II) D i o l e f i n (I) D i o l e f i n (II) 1 R R Me Me Me Et H Et Ph H H Me Et Recrystd. solvent MeOH Me OH Me OH MeOH Benzen MeO MeOH Et OH Cyclohexane 2-Pr0H EtOH EtOH 2-Pr Ph Mp/°C Reactivity* 250-252 91-92 135-136 215-216 133-134 1 11-112 114-116 137-138 134-135 153-154 Very Very Very Very high high* high high 2 None Medium* Medium Low Medium High 3 *1 The r e a c t i v i t y was estimated roughly without any quantitative measurement.

14. 15. 16. 17. 18. 19. 20. 21. 22. BUTERA ET AL. Structural Studies of Polydiyne Materials 43 Butera, R. J . ; Lando, J . B. to be published. Chance, R. ; Patel, G. N. J . Polym. : Polym. Phys. Ed. 1978, 16, 859. B a r r a l l , E. ; Clarke, T. ; Gregges, A. R. J . Polym. : Polym. Phys. Ed. 1978, 16, 1355. ; Batchelder, D. ; Ando, D. J . J . Polym. S c i . : Polym. Phys. Ed. 1981, 19, 321. ; Wegner, G. Makromol. Chem. Rapid. Commun. 1982, 13, 231. ; Hubble, C. L. Chem. Phys. L e t t . 1978, 56, 89.

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