...
首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Global Analysis of Kinetic and Stationary Diffusion-Mediated Fluorescence Quenching Data
【24h】

Global Analysis of Kinetic and Stationary Diffusion-Mediated Fluorescence Quenching Data

机译:动力学和平稳扩散介导的荧光猝灭数据的整体分析

获取原文
获取原文并翻译 | 示例
           

摘要

The recovery of the Smoluchowski-Collins-Kimball (SCK) model parameters from simulated kinetic and stationary diffusion-mediated fluorescence quenching data is studied. A Levenberg-Marquardt least-squares optimization routine was used for the estimation of the sum of the diffusion coefficients of the fluorophore and quencher, D = D_(F*) + D_Q, the sum of their radii, R = R_(F*) + R_Q, and the intrinsic quenching rate coefficient k. Single-curve analysis leads to rather poor parameter estimates. Global, i.e., simultaneous, analysis of quenching decays with different time resolutions (= channel widths) improves the recovery. The best results are obtained when quenching decays are analyzed globally with stationary Stern-Volmer data. The intrinsic quenching rate coefficient k can be recovered when quenching decays are measured with sufficiently high number of counts at a peak channel and analyzed globally with stationary Stern-Volmer data.
机译:研究了从模拟的动力学和静态扩散介导的荧光猝灭数据中恢复Smoluchowski-Collins-Kimball(SCK)模型参数的方法。 Levenberg-Marquardt最小二乘最优化程序用于估算荧光团和猝灭剂的扩散系数之和,D = D_(F *)+ D_Q,其半径之和,R = R_(F *) + R_Q和本征淬灭速率系数k。单曲线分析导致相当差的参数估计。全局(即,同时)分析具有不同时间分辨率(=通道宽度)的淬灭衰减可提高回收率。当使用固定的Stern-Volmer数据全局分析淬灭衰减时,可获得最佳结果。当在峰值通道上以足够高的数量测量猝灭衰减并使用固定的Stern-Volmer数据进行全局分析时,可以恢复固有的猝灭速率系数k。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号