私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關鏈接
聯系方式
  • 通信地址:廣西桂林市桂林理工大學材料科學與工程學院
  • 郵編:541004
  • 電話:0773-5896438
  • 傳真:
  • Email:gfzzhouli@gmail.com
當前位置:> 首頁 > 論文著作 > 正文
Multihydroxy dendritic upconversion nanoparticles with enhanced water-dispersibility and surface functionality for bioimaging
作者:Li Zhou*, Benzhao He, Jiachang Huang, Zehong Cheng, Xu Xu, Chun Wei
關鍵字:upconversion nanoparticle,hyperbranched polyglycerol,water-dispersibility,surface functionality,bioimaging
論文來源:期刊
具體來源:ACS Appl. Mater. Interface 2014, 6, 7719-7727
發表時間:2014年
Upconversion nanoparticle (UCNP) as a new class of imaging agent is gaining prominence because of its unique optical properties. An ideal UCNP for bioimaging should simultaneously possess fine water dispersibility and favorable functional groups. In this paper, we present a simple but effective method to the synthesis of a UCNP-based nanohybrid bearing a multihydroxy hyperbranched polyglycerol (HPG) shell by the combination of a "grafting from" strategy with a ring-opening polymerization technique. The structure and morphology of the resulting UCNP-g-HPG nanohybrid were characterized in detail by Fourier transform infrared, H-1 NMR, thermogravimetric analysis, and transmission electron microscopy measurements. The results reveal that the amount of grafted HPG associated with the thickness of the HPG shell can be well tuned. UCNP-g-HPG shows high water dispersibility and strong and stable upconversion luminescence. On the basis of its numerous surface hydroxyl groups, UCNP-g-HPG can be tailored by a representative fluorescent dye rhodamine B to afford a UCNP-g-HPG-RB nanohybrid that simultaneously presents upconversion and downconversion luminescence. Preliminary biological studies demonstrate that UCNP-g-HPG shows low cytotoxicity, high luminescent contrast, and deep light penetration depth, posing promising potential for bioimaging applications.
主站蜘蛛池模板: 贺兰县| 庆城县| 诸城市| 新蔡县| 西林县| 汉川市| 宝清县| 卓尼县| 阳西县| 万载县| 清流县| 吉林市| 瓦房店市| 金门县| 定州市| 西青区| 仁布县| 满洲里市| 福泉市| 东方市| 循化| 和林格尔县| 博兴县| 昌黎县| 赤壁市| 岚皋县| 敦煌市| 永德县| 灌南县| 鄱阳县| 玉屏| 建阳市| 崇阳县| 育儿| 余姚市| 永善县| 台东县| 宁陵县| 宜丰县| 邓州市| 玉门市|