𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A bis(m-phenylene)-32-crown-10-based fluorescence chemosensor for paraquat and diquat

✍ Scribed by Jinqiang Zhang; Chunxi Zhai; Feng Wang; Chuanju Zhang; Shijun Li; Mingming Zhang; Ning Li; Feihe Huang

Book ID
104095538
Publisher
Elsevier Science
Year
2008
Tongue
French
Weight
533 KB
Volume
49
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis

A bis(m-phenylene)-32-crown-10-based host to which are covalently attached two pyrene groups as fluorescence chromophores was designed and synthesized. Its complexations with paraquat (PQ) and diquat (DQ) were studied by proton NMR, ESI mass spectrometry, and UV-vis spectroscopy. Its chemosensor behavior to PQ and DQ was revealed by fluorescence emission spectroscopy. This new host can function as a fluorescence chemosensor for PQ and DQ due to the inhibition of photoinduced electron transfer between the bis(m-phenylene)-32-crown-10 moiety and the pyrene groups by the addition of PQ (or DQ).

πŸ“œ SIMILAR VOLUMES

A Bis(m-phenylene)-32-crown-10/Paraquat
A Bis(m-phenylene)-32-crown-10/Paraquat [2]Rotaxane
✍ Shijun Li; Kelong Zhu; Bo Zheng; Xianhong Wen; Ning Li; Feihe Huang πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 299 KB

## Abstract The successful preparation of the first bis(__m__‐phenylene)‐32‐crown‐10/paraquat [2]rotaxane showed unambiguously that psuedorotaxane‐type complexation, rather than the taco‐complex‐type complexation previously observed in the solid state and in solution, exists – in solution – for com