Synthesis and Photoelectronic Properties of Thermally Stable Poly[oxy(2,7-fluoren-9-onenylene)oxy(diorganosilylene)]s
作者:Eun-Ae Jung、Young-Tae Park
DOI:10.5012/bkcs.2012.33.6.2031
日期:2012.6.20
Melt copolymerization reactions of several bis(diethylamino)silane derivatives, bis(diethylamino)methylphenylsilane, bis(diethylamino)methyloctylsilane, 1,2-bis(diethylamino)tetramethyldisilane, and 1,3-bis(diethylamino) tetramethyldisiloxane, with 2,7-dihydroxyfluoren-9-one were carried out to yield poly[oxy(2,7-fluoren- 9-onenylene)oxy(diorganosilylene)]s bearing the fluoren-9-one fluorescent aromatic group in the polymer main chain: poly[oxy(2,7-fluoren-9-onenylene)oxy(methylphenylsilylene)], poly[oxy(2,7-fluoren-9-onenylene) oxy(methyloctylsilylene)], poly[oxy(2,7-fluoren-9-onenylene)oxy(tetramethyldisilylene)], and poly[oxy- (2,7-fluoren-9-onenylene)oxy(tetramethyldisiloxanylene)]. These polymeric materials are soluble in common organic solvents such as $CHCl_3$ and THF. FTIR spectra of all the materials reveal characteristic Si-O-C stretching frequencies at 1012-1018 $cm^-1}$. In the THF solution, the prepared materials show strong maximum absorption peaks at 258-270 nm, strong maximum excitation peaks at 260-280 nm, and strong maximum fluorescence emission bands at 310-420 nm. TGA thermograms suggest that most of the polymers are essentially stable to $200^\circ}C$ without any weight loss and up to $300^\circ}C$ with only a weight loss of less than 5% in nitrogen.
进行了几种双(二乙基氨基)硅烷衍生物与2,7-二羟基芴-9-酮的熔融共聚反应,得到了主链上带有芴-9-酮荧光芳香基团的聚[氧(2,7-芴-9-亚甲基)氧(二有机硅亚甲基)]:聚[氧(2,7-芴-9-亚甲基)氧(甲基苯基硅亚甲基)],聚[氧(2,7-芴-9-亚甲基)氧(甲基辛基硅亚甲基)],聚[氧(2,7-芴-9-亚甲基)氧(四甲基二硅亚甲基)],和聚[氧(2,7-芴-9-亚甲基)氧(四甲基二硅氧烷亚甲基)]。这些聚合物材料可溶于常见的有机溶剂,如$\textCHCl}_3$和THF。所有材料的FTIR光谱显示出特征的Si-O-C伸缩振动频率在1012-1018 $\textcm}^-1}$。在THF溶液中,制备的材料在258-270 nm处显示出强烈的最大吸收峰,在260-280 nm处显示出强烈的最大激发峰,以及在310-420 nm处显示出强烈的最大荧光发射带。TGA热重图谱表明,大多数聚合物在氮气中基本稳定至$200^\circ}C$而没有重量损失,并且在$300^\circ}C$时仅损失不到5%的重量。