Synthesis of poly{[bis(diethynylphenyl)silylene]phenylene}s with highly heat-resistant properties and an application to conducting materials

Autor:	Nobuaki Ohta, Masaru Ikeda, Taisuke Uemura, Joji Ohshita, Toshiyuki Iida, Atsutaka Kunai
Rok vydání:	2004
Předmět:	chemistry.chemical_classification Thermogravimetric analysis Organic Chemistry Silylene Polymer Conductivity Biochemistry Inorganic Chemistry chemistry.chemical_compound chemistry Phenylene Polymer chemistry Materials Chemistry Physical and Theoretical Chemistry Thin film Quartz Phenyllithium
Zdroj:	Journal of Organometallic Chemistry. 689:1540-1545
ISSN:	0022-328X
Popis:	Poly{[bis(3,5-diethynylphenyl)silylene]- p -phenylene} was prepared by the reaction of poly[(diethoxysilylene)- p -phenylene] with 3,5-bis(trimethylsilylethynyl)phenyllithium, followed by desilylation of the resulting substitution product. The present polymer exhibited extremely high heat-resistance and their thermogravimetric analysis (TGA) in a nitrogen atmosphere showed the temperature of 5% weight loss (Td 5 ) of 791 °C. Total weight loss at 1000 °C in TGA was determined to be 6% based on the initial weight. Treatment of a polymer film on a quartz plate at 1200 °C in vacuo led to the formation of a conducting thin film with a thickness of 74 nm and a conductivity of 9 S/cm.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::146e2deaa5ac8df97a718a92c5b2e5d2 https://doi.org/10.1016/j.jorganchem.2004.01.033 Zobrazit plný text záznamu Full Text from ScienceDirect