English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A new organic molecule probe has been introduced as a “turn-off” fluorescent sensor to detect trace quantities of UO 22+  in the presence of several transition metals with promising results. The procedure is based on quenching the fluorescence intensity of 6-chloro-2 H -1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide ( L ) in the presence of various UO 22+  concentrations in methanol. The UO 22+  and  L  species interact through electrostatic interaction between negatively charged nitrogen atom of the sulfonamide group of  L  and positively charged UO 22+ , thus facilitating the non-radiative recombination of UO 22+  and  L  through the charge transfer or electron transfer processes and leading to the fluorescence quenching of  L . The mechanism of quenching was addressed and proved to be static quenching. The impressive quenching of the fluorescence intensity of  L  by different concentrations of UO 22+  has been successfully used as a new sensor to measure UO 22+  in methanol at  λex  = 340 nm,  λem  = 380 nm with a linear dynamic range of 0.08–5.0 µM and detection limit and quantification limit of 0.0276 and 0.0837 µM, respectively. The  L  sensor shows interesting advantages compared to other developed sensors with adequate performance, such as broader linear range and lower detection limit, selectivity, and simplicity, which illustrate its useful practical use.

reviews in analytical chemistry

Fluorescence quenching detection of UO 2                  2+  in aqueous solution based on an organic molecule probe of 6-chloro-2 H -1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide