In this research our main concern is to address that fluorosis as a global health issue and to provide an affordable diagnostic probe to detect the unhealthy concentration of fluoride in water that causes it. In this context, we have used chitosan with 85% deacetylation as a matrix to stabilize the nanoparticles (NPs) for fluoride detection. The sensing probe based on a nano-architecture imparts evident green color to the solution by encountering with fluoride ion in aqueous with bathochromic shift of 320 nm. The corresponding color change of the solution after the interaction with fluoride is ascribed to the intra-molecular charge transfer (ICT) transition among the solution and fluoride ion complex and clearly distinguishable through naked eye and UV–vis spectra. This cost-effective, easily detectable, fast, non-hazardous, self-assembly driven colorimetric method has the concentration of detection of fluoride ion (2 mgL⁻¹).

在这项研究中，我们的主要关注点是解决氟中毒这一全球性健康问题，并提供一种负担得起的诊断探针来检测导致氟中毒的水中不健康浓度。在这种情况下，我们已使用具有85％脱乙酰基的壳聚糖作为基质来稳定用于氟化物检测的纳米颗粒（NPs）。基于纳米结构的传感探针通过在水溶液中遇到氟化物离子而发生红移320 nm，从而赋予溶液明显的绿色。与氟化物相互作用后，溶液的相应颜色变化归因于溶液与氟化物离子络合物之间的分子内电荷转移（ICT）过渡，并且可以通过肉眼和UV-vis光谱清楚地区分。这种经济高效，易于检测，快速，无危险的，^-1）。