Structure Characterization and Luminescent Properties of Mesoporous SiO2 Loaded With 1,8-Naphthalic Anhydride
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摘要: 分别利用单孔道MCM-41和双模型介孔分子筛(BMMs)作为载体通过氨丙基改性和负载荧光分子1, 8-萘二酸酐制备有机-无机杂化发光材料, 并采用XRD、TEM、SEM、BET、FT-IR、PL等手段对样品进行了结构表征.结果表明:具有双模型介孔结构的BMMs所制备的有机-无机杂化材料, 其发射峰位置(444 nm)较负载到单孔道的MCM-41中所制备的杂化材料的发射峰位置(450 nm)蓝移更明显, 主要原因是由于BMMs和MCM-41的颗粒形貌和大小不同所致.BMMs为球形颗粒(50 nm), 而MCM-41则为不规则颗粒且大小分布不均(1~3μm).Abstract: The organic-inorganic luminescent hybrid mesoporous materials (LHMS) was prepared via aminopropyl groups modification and subsequently 1, 8-Naphthalic anhydride loading by using bimodal mesoporous materials (BMMs) and MCM-41 as carriers, respectively.The resultant hybrid materials were characterized by XRD, TEM, SEM, BET, FT-IR and PL methods.It was showed that the emission peak position of LHMS-BMMs is around 444 nm, while for LHMS-MCM-41 with about 450 nm, demonstrating that the blue-shift phenomenon of LHMS-BMMs was more remarkable than that of LHMS-MCM-41.The most reason is the different morphology and related particle sizes between BMMs and MCM-41: BMMs is of spherical particle with a size of around 50 nm and uniform mesopores (about 3 nm) , while MCM-41 reveals irregular particle distribution in the range of 1-3 μm, but with uniform one-dimensional mesopores (about 3 nm) .
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