内滤效应设计对非制式爆炸物高锰酸钾检测性能提升策略研究进展

Recent Progress in Sensing Performance Improvement Strategy Design via Inner Filter Effect for Improvised Explosive Potassium Permanganate Detection

高锰酸钾作为强氧化剂,是重要的非制式爆炸物原料之一,实现对其快速、高灵敏、可视化识别对维护国家公共安全至关重要。近年来,荧光法由于具有选择性好、灵敏度高、响应速度快等优势,通常被用于高锰酸钾检测,其检测原理大多基于内滤效应(IFE)。该文综述了近5年来基于IFE机理检测高锰酸钾的代表性研究成果,总结了IFE机理用于提升高锰酸钾检测性能的设计策略,系统探讨了单发射波长和多发射波长调控,包括配体种类、掺杂元素种类、金属中心个数及种类、不同杂化体系调控对材料光谱性质及高锰酸钾检测性能的影响。展望了该领域基于IFE策略的检测手段可能的发展趋势及应用前景,可为构建高灵敏检测高锰酸钾的IFE体系提供指导。

Potassium permanganate(KMnO_(4)),as a powerful oxidant,is widely used in chemical production,water purification and wastewater treatment.While excessive emission can cause severe environmental pollution and excessive intake can lead to irreversible organ necrosis.Moreover,it is one of the most frequently used raw materials in preparing improvised explosives.Hence,a rapid,highly sensitive and visual identification of trace KMnO_(4) is of great significance for environment monitoring and public security.Recently,fluorescence technique has been widely applied for KMnO_(4) detection due to the features of high sensitivity and selectivity,rapid response,various optional function group and visualization.At present,the fluorescent involved functional materials for detecting KMnO_(4) can be divided as nanomaterials,coordination polymers and hybrid materials,the detection mechanism relies on inner filter effect(IFE),fluorescence resonance energy transfer(FRET),static quenching,redox and complexation.Among them,the IFE-based method is the main mechanism employed in KMnO_(4) detection due to the advantages of simple operation,sensitive response and material reusability.Hence,this review systematically summarizes the recent progress within five years of the IFE-based approaches for KMnO_(4) determination.It starts with a brief introduction of strategic designs focusing on performance improvement of IFE-involved sensing detection towards KMnO_(4).The influence from the modulation of the mono-/multi-emission wavelength on the sensing sensitivity is comprehensively discussed.To end,a prospective is forecasted regarding the future development of IFE-involved sensing strategy for KMnO_(4) detection and the potential application,providing a guide for the IFE-based sensing platform to ultra-sensitively detect KMnO_(4).