A novel carbazole-based highly sensitive and selective turn-on fluorescent probe for mercury (II) ions in aqueous THF

A novel carbazole-based fluorometric and colorimetric sensor for the highly sensitive and specific detection of Cu2+ in aqueous solution

“…It indicates that the PCBW sensor, as a fluorescence “turn-off” sensor, can be used for quantitative detection of Cu 2+ content in the range of 0–6 × 10 −6 mol L −1 . According to the equation as LOD = 3 σ / s (σ represents the standard deviation of blank sample, s represents the absolute value of the coefficient of the fitting function between fluorescence intensity and the concentration of testing metal ion), 33 the LOD of the sensor reaches 1.19 × 10 −8 mol L −1 , which further indicates the PCBW sensor has a good sensitivity for the detection of Cu 2+ in solution. Meanwhile, the concentration of Cu 2+ also can be roughly estimated via the naked eye by the fluorescence image obtained under long wavelength UV lamp light shown in Fig.…”

Research Progress in Mercury Ion Fluorescence Probes Based on Organic Small Molecules

“…不仅如此, 硫代缩醛/缩酮的脱保护反应也常被用 于设计 Hg 2 ＋ 探针 [138] . Hg 2 ＋ 可催化硫代缩醛/缩酮脱保护 反应的进行, 常通过在萘酰亚胺 [139] 、三苯胺 [140] 、咔 唑 [141] 等荧光团中引入二硫缩醛/缩酮部分作为 Hg 2 ＋ 的 反应位点, 构建新型的 Hg 2 ＋ 探针 [142] .…”

Pyrene‐Based “Turn‐On” Fluorescent Polymeric Probe with Thioacetal Units in the Main Chain for Mercury(II) Detection in Aqueous Solutions and Living Cells

“…[31][32][33][34][35][36][37][38][39][40][41] However, these probes have limited solubility in water and cannot be used for sensing research in pure water, thereby limiting their applicability. [42][43][44][45][46] Therefore, the exploration of water-soluble probes is of great importance. In this regard, several watersoluble polymeric systems with thioacetal units in the side chain have recently been developed for sensing mercury in pure water media and have good biocompatibility for live cell imaging.…”