发光学报2026，Vol.47Issue(4)：704-713,10.DOI:10.37188/CJL.20250261
红蓝草基比率型荧光传感碳点制备及其在pH检测中的应用
Preparation of Peristrophe baphica Bremk-based Ratio-type Fluorescent Sensing Carbon Dots and Their Application in pH Detection
摘要
Abstract
In this study,natural biomass Peristrophe baphica Bremk was used as the carbon source,and biomass-derived carbon dots(HCDs)with dual-emission properties were prepared via pyrolysis.Their fluorescent response performance in wide-range pH detection scenarios was systematically investigated.Under excitation at 440 nm,HCDs exhibit dual emission at 510 nm(green light)and 610 nm(red light).Within the wide range covering the full pH scale of 0-14,the intensity ratio of the dual emission peaks(F610/F510)shows a high linear relationship with pH value in both pH 0-3 and pH 4-14 ranges.The correlation coefficients(R²)are as high as 0.998 9 and 0.992 8,re-spectively,and the detection limits are as low as 0.08 pH unit and 0.48 pH unit,respectively,demonstrating excel-lent sensitivity and selectivity.This radiometric probe has excellent self-calibration ability,which can effectively overcome the limitation that traditional single-emission probes are susceptible to environmental interference.With the core advantage of wide-range detection,it has broad application prospects in environmental monitoring,bioimaging and other fields.关键词
碳点/红蓝草/pH检测/双发射Key words
carbon dots/Peristrophe baphica Bremk/pH detection/dual emission分类
数理科学引用本文复制引用
袁西霞,邓俊龙,江建芬,沈佳妮,王琴,黄彩艳,汪正良..红蓝草基比率型荧光传感碳点制备及其在pH检测中的应用[J].发光学报,2026,47(4):704-713,10.基金项目
云南省基础研究计划面上项目(202501AT070006) （202501AT070006）
昆明市"春城计划"高层次人才项目(2022SCP005) （2022SCP005）
云南省现代分离分析与物质转化重点实验室(202449CE340001) （202449CE340001）
大学生创新创业训练计划项目Supported by Yunnan Fundamental Research Projects(202501AT070006) （202501AT070006）
The Spring City Plan:the High-level Talent Promo-tion and Training Project of Kunming(2022SCP005) （2022SCP005）
Yunnan Key Laboratory of Modern Separation Analysis and Substance Transformation(202449CE340001) （202449CE340001）
The College Students'Innovative Entrepreneurial Training Plan Program （）
