Preparation and Characterization of Methylsilsesquioxane Thin Film Containing Tris(ethylenediamine)cobalt(III) Chloride as a Photobase Generator
Preparation and Characterization of Methylsilsesquioxane Thin Film Containing Tris(ethylenediamine)cobalt(III) Chloride as a Photobase Generator
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DOI：
10.1021/cm1016849
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发表时间：
2010-10
影响因子：
8.6
通讯作者：
Y. Uraoka;K. Tadanaga;M. Tatsumisago
中科院分区：
文献类型：
--
作者：
Y. Uraoka;K. Tadanaga;M. Tatsumisago
Porous methylsilsesquioxane thin films were prepared using the sol−gel process, with tris(ethylenediamine)cobalt(III) chloride (Co(en)3Cl3) as a photobase generator and polypropylene glycol (PPG) as a template. The generation of amines was confirmed for more than 2 min of ultraviolet (UV) irradiation. The prepared film with the UV irradiation and subsequent heat treatment showed a low refractive index of n = 1.35. Subsequent field-emission scanning electron microscopy (FE-SEM) observations confirmed that shrinkage of the film with the heat treatment was suppressed in the film with UV irradiation. The photogenerated amines from Co(en)3Cl3 worked as a catalyst for the condensation reaction in the gel films during the initial stage of heat treatment. A porous structure was obtained using the thermal decomposition of PPG without collapse of the gel network.
