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Carbazole tricationic salt: A novel potential two-photon fluorescent DNA probe for nucleic imaging of cells
  • ISSN号:0251-0790
  • 期刊名称:《高等学校化学学报》
  • 时间:0
  • 分类:O561.2[理学—原子与分子物理;理学—物理] Q523[生物学—生物化学]
  • 作者机构:[1]State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China, [2]Beijing National Laboratory for Molecular Sciences (BNLM), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • 相关基金:This work was supported by the National Natural Science Foundation of China (50673053, 50173015, 30771091 and 50721002) and National Science Foundation of China/the Hong Kong Research Grants Council (50218001).
中文摘要:

新 carbazole tricationic 盐, 4,4-(1E,1E )-2,2-(9-(2-(1-(2-hydroxyethyl)pyridinium-4-yl)ethyl)-9H-carbazole-3,6-diyl) 二度(ethane-2,1-diyl ) 二度(1-(2-hydroxyethyl ) pyridinium ) 碘化物(THEPC ) 被综合。Photophysical 实验证明了 THEPC 有大二光子的激动的荧光行动剖面图(33 美国通用汽车公司面对 DNA ) ,它作为好生物 fluorophore 评价 THEPC。从电子吸收,圆二色性和 single-/two-photon 荧光排放系列的结果建议 THEPC 能强烈绑在 DNA,与 5.79 的一个内在的有约束力的常数

英文摘要:

A new carbazole tricationic salt, 4,4'-(1E,1'E)-2,2'-(9-(2-(1-(2-hydroxyethyl)pyridinium-4-yl)ethyl)-9H-carbazole-3,6-diyl) bis(ethane- 2,1-diyl) bis(1-(2-hydroxyethyl)pyridinium) iodide (THEPC) was synthesized. Photophysical experiments have shown that THEPC has large two-photon excited fluorescence action cross-sections (33 GM in the presence of DNA), which ranks THEPC as a good biological fluorophore. The results from electronic absorption, circle dichroism and single-/two-photon fluorescence emission spectra suggest that THEPC can strongly bind to DNA, with an intrinsic binding constant of 5.79 x 106 L mo1-1. THEPC has better photostability under one- or two-photon excitation conditions. Finally, the staining photos from two-photon fluorescence microscopy (TPM) show that THEPC can exclusively label the nucleus with high contrast and without image distortion. These remarkable properties and optimized imaging ability make THEPC an attractive DNA probe in TPM.

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期刊信息
  • 《高等学校化学学报》
  • 北大核心期刊(2011版)
  • 主管单位:中华人民共和国教育部
  • 主办单位:吉林大学 南开大学
  • 主编:周其凤
  • 地址:吉林大学南胡校区
  • 邮编:130012
  • 邮箱:cjcu@jlu.edu.cn
  • 电话:0431-88499216
  • 国际标准刊号:ISSN:0251-0790
  • 国内统一刊号:ISSN:22-1131/O6
  • 邮发代号:12-40
  • 获奖情况:
  • 首届及第二届国家期刊奖,连续两届“百种中国杰出学术期刊”,中国期刊方阵“双高”期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘(网络版),荷兰文摘与引文数据库,美国工程索引,美国科学引文索引(扩展库),日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),英国英国皇家化学学会文摘,中国北大核心期刊(2000版)
  • 被引量:50676