Bazı Trimerik Fosfazen Türevlerinin Sentezi, Kristalografik, Spektroskopik Yöntemler ile Incelenmesi ve Langmuir-Blodgett Tekniği Kullanılarak Ultra-İnce Filmlerinin Hazırlanması

Abstract

Phosphazenes are a class of phosphorus-nitrogen compounds containing single and double bonds between P and N atoms. Phosphazene compounds are divided into two groups, namely acyclic and cyclic. Acyclic and cyclic phosphazenes are shown by the general formula of [(R)HN=PX3,X2P(Y)N=PX3 (R: alkyl, X: halogen, alkyl, aryl, amino, aryloxy; Y=O, S)] and [(NPX2)n (X: F, Cl, Br; n=3-12)], respectively. Depending on the repetation number of the –N=PX2- group, it is possible to obtain a variety of compounds from small molecules to poymers. The most known phosphazene types are octachlorocyclotetraphosphazene (N4P4Cl8 tetramer) and the standard compound hegzachlorotriphosphazene (N3P3Cl6 trimer), in which the trimeric phosphazene compounds were searched herein.Phosphazenes are named according to the positions of the functional-groups. If the functional group is bonded to only one phosphorus atom of the phosphazene ring, it is called spiro.