Please use this identifier to cite or link to this item:
Title: Thermally stable glassy luminescent cyclotriphosphazenes
Authors: Ng, J.K.-P.
Cho, C.M.
Chin, J.M.
Ke, K.L.
He, C. 
Xu, J.
Keywords: Cyclotriphosphazenes
Light-emitting diode
Thermally stable
Issue Date: Sep-2013
Citation: Ng, J.K.-P., Cho, C.M., Chin, J.M., Ke, K.L., He, C., Xu, J. (2013-09). Thermally stable glassy luminescent cyclotriphosphazenes. European Polymer Journal 49 (9) : 2404-2414. ScholarBank@NUS Repository.
Abstract: A series of thermally stable cyclotriphosphazenes, hexakis(4-(9,9- dihexthyl-fluoren-2-yl)phenoxy)cyclotriphosphazene (CPZ1), hexakis(4′-(9, 9-dihexyl-fluoren-2-yl)-[1,1′-biphenyl]-4-oxy)cyclotriphosphazene (CPZ2), hexakis(4-(9,9,9′,9′-tetrahexyl-[2,2′-bifluoren]-7-yl)phenoxy) cyclotriphosphazene (CPZ3), and hexakis-(4′-(9,9,9′,9′- tetrahexyl-[2,2′-bifluoren]-7-yl)-[1,1′-biphenyl]-4-oxy) cyclotriphosphazene (CPZ4), were prepared by reacting hexachlorocyclotriphosphazene with suitable precursors in high yields. The chemical structures and properties of the compounds CPZ1-4 were characterized by thermogravimetric analysis, differential scanning calorimetry, X-ray diffraction, and UV-Vis and fluorescence spectroscopy. All CPZ compounds were amorphous in nature and showed very good thermal stability with decomposition temperatures of more than 429 C in nitrogen and around 400 C in air. CPZ3-4 emitted blue light with maxima of 403 and 416 nm with quantum yields of 0.69-0.56 in THF solution, respectively. Study on the thermal aging effect on the optical properties of CPZ2-4 revealed that three-dimensional hybrid organic-inorganic cyclotriphosphazene ring could suppress the undesirable green emission by obstructing π-π stacking. In addition, light-emitting diode devices of CPZ3 and CPZ4 were fabricated. © 2013 Elsevier Ltd. All rights reserved.
Source Title: European Polymer Journal
ISSN: 00143057
DOI: 10.1016/j.eurpolymj.2013.02.013
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Feb 19, 2019


checked on Feb 11, 2019

Page view(s)

checked on Feb 8, 2019

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.