中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 单分散荧光微球的制备及其光学性能研究 南京林业大学学报(自然科学版) 2010,34 (3) 15-19
Position: Home > Articles > Preparation of monodisperse fluorescent microspheres and their optical properties Journal of Nanjing Forestry University(Natural Sciences Edition) 2010,34 (3) 15-19

单分散荧光微球的制备及其光学性能研究

作  者：
吴伟兵;王明亮;景宜;戴红旗
单  位：
东南大学化学化工学院;南京林业大学轻工科学与工程学院
关键词：
聚苯乙烯;荧光微球;两步分散聚合;包覆法;吸附法
摘  要：
采用两步分散聚合法通过包覆负载染料的方式制备了单分散聚苯乙烯荧光微球。以高分子质量(Mw=300000g/mol)的聚乙烯吡咯烷酮作稳定剂,采用间断式连续滴加染料单体的方式进行制备。该方法制备的荧光微球单分散性好(标准偏差<7%),染料负载效率高。扫描电镜显示微球粒径均匀,表面形态光滑均匀,无明显缺陷。通过比较发现在微球球壳的保护作用下,染料可有效避免荧光猝灭,荧光信号比同浓度的溶液高几个数量级;此外,微球荧光发射稳定,不受外界环境介质变化的影响。
译  名：
Preparation of monodisperse fluorescent microspheres and their optical properties
作  者：
WU Wei-bing1,WANG Ming-liang2,JING Yi1,DAI Hong-qi1 (1. Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology,College of Light Industry Science and Engineering,Nanjing Forestry University,Nanjing 210037,China; 2. School of Chemistry and Chemical Engineering,Southeast University,Nanjing 211189,China)
关键词：
polystyrene; fluorescent microspheres; two stage dispersion polymerization; embedment; adsorption
摘  要：
Fluorescent monodisperse polystyrene microspheres were prepared by dispersion polymerization by modified two stage dispersion polymerization in which polyvinylpyrrolidone with high molecular weight (Mw =300 000 g/mol) was used as the stabilizer and the dye was added in a relative long period after nucleation stage. Two stage dispersion polymerization combined with embedment method resulted in more uniform microspheres and higher dye concentration compared to adsorption and conventional dispersion polymerization method. The surface morphology,average diameter,size distribution and photoluminescence properties of microspheres were investigated. The found intense fluorescence and fluorescent resistance to the solvents indicate that the microsphere structure protects dye molecules from fluorescence quenching and ambient medium. This type of monodisperse fluorescent microspheres has potential application in bioassays.

相似文章

导出引用
计量
文章访问数: 9
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46