Dipyrromethane‐Based Receptor for Fluorometric Sensing of Hydrogenpyrophosphate

Abstract

A new dipyrromethane-based tetramide 1 has been designed and synthesized. It serves as potential chemosensor for fluorometric detection of hydrogenpyrophosphate (HP 2 O 7 3À ; HPPi) in organic and semi-aqueous medium. In CH 3 CN, the tetramide 1 shows strong excimer formation upon complexation with HPPi and results in a ratiometric change in fluorescence. Other anions did not bring such change. In aqueous CH 3 CN, this is observed although the change is less pronounced. Hydrogen bonding of HPPi in the cleft pulls the pendant naphthalene to form the excimer. The complexation has been established by spectroscopic and theoretical studies. The tetramide 1 selectively senses HPPi in CH 3 CN with binding constant and detection limit of 3.2 × 10 3 M À 1 and 2.08 × 10 À 5 M, respectively.

Dehydroabietylamine-decorated imino-phenols: supramolecular gelation and gel phase selective detection of Fe3+, Cu2+ and Hg2+ ions under different experimental conditions

“…During our ongoing interest in developing ion-responsive supramolecular gelators, 1 d ,4 a ,4 b ,6 we report here azo function-based imino-phenols 1–3 (Fig. 1) which form brown to reddish brown gels in 1,4-dioxane-H 2 O.…”

An aggregation induced emission active bis-heteroleptic ruthenium(ii) complex for luminescence light-up detection of pyrophosphate ions

“…18 In this regard, pyrophosphate (PPi) detection and discrimination have received the utmost attention of several research groups. 19–25 Among the several reported methods, fluorescence sensing is advantageous over others owing to its high sensitivity and selectivity, low cost, signal simplification, and real-time detection, which offers application not only for in vitro assays but also for in vivo imaging studies. 26–29…”