性做久久久久久坡多野结衣-性做久久久久久久久浪潮-性欲影院-性影院-国产精品线路一线路二-国产精品兄妹在线观看麻豆

產品展廳收藏該商鋪

您好 登錄 注冊

當前位置:
美國布魯克海文儀器公司>技術文章>Nanobrook Omni測量應用案例-54

技術文章

Nanobrook Omni測量應用案例-54

閱讀:300          發布時間:2018-11-10
 文獻名:An amphiphilic and photoswitchable organocatalyst for the aldol reaction based on a product-imprinted polymer 

作者:An-xun Zhenga, Cheng-bin Gonga, Wei-jing Zhanga, Qian Tanga, Hai-rong Huanga, Cheuk-fai Chowb, Qian Tanga 

a    The Key Laboratory of Applied Chemistry of Chongqing Municipality, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China

b    Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong

 

摘要:A series of amphiphilic molecularly imprinted polymers (MIP1, MIP2, MIP3, MIP4, MIP5, and MIP6) containing hydrophobic photoresponsive sites and hydrophilic catalytically active sites were fabricated using bifunctional monomers. These polymers were characterized by scanning electron microscopy, N2 adsorptiondesorption analysis, Fourier Transform infrared spectroscopy, thermal gravimetric analysis, and ultravioletvisible spectroscopy. The catalytic activity of the amphiphilic molecularly imprinted polymer was investigated towards the aldol reaction between p-nitroaldehyde and acetone (a molecular enlargement reaction) in a mixed solvent of DMSO and water at room temperature. The polymer catalyst MIP3 performs best, and displayed good conversions with low catalyst loading (5 mol% of l-hydroxyproline with respect to the aldehyde) and photoswitching properties (photo-regulated conversion difference of 20%). Compared with the corresponding non-imprinted polymer, a higher binding capacity, higher conversion, and better photoswitching properties were obtained when the molecularly imprinted polymer was used as the catalyst, illustrating the importance of the specific cavities in the molecularly imprinted polymer.

收藏該商鋪

登錄 后再收藏

提示

您的留言已提交成功!我們將在第一時間回復您~

對比框

產品對比 產品對比 聯系電話 二維碼 意見反饋 在線交流

掃一掃訪問手機商鋪
010-62081908
在線留言
主站蜘蛛池模板: 临夏县| 徐闻县| 民丰县| 江阴市| 麦盖提县| 德阳市| 长泰县| 玛沁县| 都昌县| 通城县| 满城县| 宜章县| 溧阳市| 工布江达县| 温泉县| 遵化市| 简阳市| 泰州市| 五家渠市| 凤山县| 平谷区| 苍山县| 搜索| 福建省| 和田市| 益阳市| 遂平县| 贡嘎县| 安多县| 乌兰县| 渝北区| 许昌县| 鸡西市| 浪卡子县| 泸州市| 彭山县| 达尔| 云霄县| 泾川县| 阿拉善左旗| 连云港市|