New photo- and electroluminescent conjugated copolyfluorenes with 7,8,10-triarylfluoranthene units in the backbone

作者：Keshtov M L^*; Mal'tsev E I; Marochkin D V; Muranov A V; Khokhlov A R

来源：Polymer Science - Series B, 2012, 54(5-6): 289-296.

DOI：10.1134/S1560090412050016

A new monomer, the dibromo derivative of fluoranthene 1-[7,10-bis(4-bromophenyl)fluoranthen-8-yl]pyrene, is synthesized and used to prepare three new copolyfluorenes containing 3, 5, and 10 mol % 7,8,10-triarylfluoranthene groups via the Yamamoto reaction. The number-average molecular masses and polydispersities of the polymers vary in ranges 41900-78900 and 2.7-3.5, respectively. All polymers are soluble in common organic solvents, and their glass-transition temperatures are from 95 to 115A degrees C. Temperatures corresponding to a 10% loss in weight during heating in argon and air are in the ranges 420-435 and 405-415A degrees C, respectively. The photoluminescence spectra of the polymers exhibit strong blue emission with a maximum at 418 nm, whereas the absorption spectra show characteristic peaks at 351-357 nm. All polymers possess reversible or partially reversible redox behavior owing to high electric activity and demonstrate redox pairs at 1.51 eV (oxidation) and -2.09 eV (reduction).

• 出版日期2012-5
• 单位北京化工大学