4'-VIN亚基双(N,N-二甲基苯胺)简称DPE-(NMe2)2,是一种黄色针状晶体。该化合物可由4,4-双(二甲基氨基)苯甲酮为原料制备得到,并有文献报道可用于制备氢化丁苯橡胶。
制备在0°C下,12小时内,将5.68 g 4,4-双(二甲基氨基)苯甲酮溶解于50 ml纯化的四氢呋喃中,缓慢滴加到含有1.6 M甲基锂乙醚溶液(18.75 ml)和甲基三苯基溴化膦(10.72 g)的混合液中。12小时后,通过加入几滴甲醇淬灭反应。随后,过滤除去生成的三苯基膦氧化物,并使用硅胶色谱法进行纯化,以甲苯作为洗脱剂。最后,通过从甲醇中重结晶三次来进一步提纯产物。最终得到的针状淡黄色晶体在40°C的真空烘箱中干燥至恒重。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4-[1-[4-(二甲氨基)苯基]乙基]-N,N-二甲基苯胺 | 4,4′-(ethane-1,1-diyl)bis(N,N-dimethylaniline) | 3600-55-3 | C18H24N2 | 268.402 |
米氏酮 | bis(p-dimethylaminophenyl)methanone | 90-94-8 | C17H20N2O | 268.359 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
3,3-二[4-(N,N-二甲基氨基)苯基]-2-丙烯醛 | 3,3-bis(4-(dimethylamino)phenyl)acrylaldehyde | 17665-72-4 | C19H22N2O | 294.396 |
—— | 1,1,4,4-Tetrakis-(p-dimethylaminophenyl)-buta-1,3-dien | 20094-58-0 | C36H42N4 | 530.756 |
—— | 2,2-bis(4-dimethylaminophenyl)nitroethene | 87892-64-6 | C18H21N3O2 | 311.384 |
—— | [3,3-bis(4-dimethylaminophenyl)propa-1,2-dienylidene]malononitrile | 1381787-95-6 | C22H20N4 | 340.428 |
4-[1-[4-(二甲氨基)苯基]乙基]-N,N-二甲基苯胺 | 4,4′-(ethane-1,1-diyl)bis(N,N-dimethylaniline) | 3600-55-3 | C18H24N2 | 268.402 |
米氏酮 | bis(p-dimethylaminophenyl)methanone | 90-94-8 | C17H20N2O | 268.359 |
—— | {1-chloro-3,3-bis[4-(dimethylamino)phenyl]prop-2-en-1-ylidene}malononitrile | 1381787-98-9 | C22H21ClN4 | 376.889 |
—— | Bis{[1,1-bis(4-dimethylaminophenyl)ethenyl]}(4-dimethylaminophenyl)methane | 118312-23-5 | C45H53N5 | 663.949 |
We investigated sol-gel-derived silica-based hard coatings on modified polyester substrates. The silica network was modified by incorporating an organic component and adding transition metal oxides. These modifications resulted in tailored thermal, optical, and mechanical properties of the coatings. Various low-temperature densification techniques were studied including sol-preparation procedure, enhanced solvent evaporation, ultraviolet irradiation, and low-temperature heating (below 150 °C). Oxygen plasma etching was applied to improve the adhesion of the sol-gel coatings on the plastic surface. Nanoindentation analysis revealed that the coatings have a surface hardness up to 2.5 ± 0.27 GPa and an elastic modulus up to 13.6 ± 0.4 GPa, approximately an order of magnitude higher than that of the plastic surface.