Phosphorus, Sulfur and Silicon, 2003, Vol. 178:549–558 Copyright C  2003 Taylor & Francis 1042-6507/03 $12.00 + .00 DOI: 10.1080/10426500390170705 PREPARATION AND CHARACTERIZATION OF CHROMOPHOR GROUP CONTAINING CYCLOTRIPHOSPHAZENES: III BIS-AZO CHROMOPHOR CARRYING SOME CYCLOTRIPHOSPHAZENES Mustafa Odaba¸ so˘ glu, S ¸¨ ukriye C ¸ akmak, G ¨ unseli Turgut, and Hasan ˙ I¸ cbudak Ondokuz Mayts University, Samsan, Turkey (Received July 4, 2002; accepted August 20, 2002) Some new substituted cyclotriphosphazenes were prepared by reac- tion of hexachlorocyclotriphosphazene and phenylazophenyla- zophenol compounds such as p-[p-phenylazo-phenylazo]phenol, p-[p-(o-chlorophenylazo)phenylazo]phenol, p-[p-(p-chlorophenylazo)- phenylazo]phenol, p-[p-(p-methylphenylazo)phenylazo]phenol, and tetrazobenzene-β -naphtol. They are characterized by UV-Vis, FT IR, elemental analysis, and TG, DTG, and DTA. Keywords: Bis-azocompounds; cyclotriphosphazenes; MS; phenyla- zophenoxycyclotriphosphazenes; thermal analysis INTRODUCTION Azobenzene derivatives have been the most widely used class of dyes due to their versatile application in various fields, such as dyeing textile fibers, biomedical studies, advanced applications in organic synthesis, and high technology areas as laser, liquid crystalline dis- plays, electro-optical devices, and ink-jet printers. 1–3 Furthermore, phophazene-bound dye systems are of interest in photochemical re- search, in photographic processes, and in a number of biologically re- lated applications. 4–7 As part of our general interest in the reaction of cyclic phosphazenes, we have examined the possibility whether Schiff’s The financial support given to research project by Research Projects Fund of Ondokuz Mayıs University is gratefully acknowledged. Address correspondence to Mustafa Odabas ¸o˘ glu, Department of Chemistry, Faculty of Arts and Sciences, Ondokuz Mayıs University, 55139, Kurupelit, Samsun, Turkey. E-mail: muodabas@omu.edu.tr 549