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This chapter contains sections titled:
Introduction
Photochromism in single crystals
Photochromism in amorphous films
Photochromism in polymers
Photochromism on metal surfaces
New architectures
Conclusion
References
Several poly(urea urethane) oligomers 14a–e were prepared by polycondensation of N-(hydroxyalkyl)-2-oxo-1,3-diazepane-1-carboxamides 11a–e in bulk. The latter compounds were obtained under mild reaction conditions from a novel type of activated urethane/intramolecular blocked isocyanate 8 and a homologous series of amino alcohols. The influence of several catalysts (DABCO, Sn(octoate) 2 ,...
Alternating poly(amide urethane)s from ε-caprolactam, amino alcohols H 2 N-(CH 2 ) x -OH (x=2-6), and diphenyl carbonate were prepared by polycondensation of α-hydroxy-ω-O-phenylurethanes 4a-e. The degree of oligomerization was adjusted by the conversion. Oligomers with two or three O-phenylurethane end groups and predetermined molecular weight were prepared by polycondensation...
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