ISSN:
1018-5054
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The number of isomers ir,t for stacked polymeric phthalocyanines in which each phthalocyanine ring is tetrasubstituted or octasubstituted with two different substituents (each benzene moiety substituted with both substitutents) is determined to be \documentclass{article}\pagestyle{empty}\begin{document}$$ \mathop {\lim }\limits_{x \to \infty } i_{{\rm r,t}} = 2^m /16 $$\end{document} where m is the number of substituted phthalonitrile molecules incorporated into the polymer and x is the number of phthalocyanine macrocycles (degree of polymerization; m = 4x). Specifically, for a stacked polymeric phthalocyanine with x = 2; there exist 298 isomers. The stacked polymeric phthalocyanines with substituted phthalocyanine rings possess different symmetry groups (D2h, D2d, C4, C2V or CS E as sole symmetry operation). The results are valid for stacking of other macrocycles similar to phthalocyanine such as prophyrins.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mats.1993.040020607
