Premium
Metal‐Ion‐Promoted Electron Transfer between Tetrathiafulvalene and Quinone Units Within a Calix[4]arene Framework and Tuning through Coordination of the Neighboring Crown Ether with a Sodium Cation
Author(s) -
Sun Fei,
Hu Fang,
Zhang Guanxin,
Zhang Deqing
Publication year - 2012
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201100560
Subject(s) - tetrathiafulvalene , crown ether , chemistry , electron transfer , quinone , intramolecular force , metal , photochemistry , electron paramagnetic resonance , ether , ion , crystallography , stereochemistry , molecule , organic chemistry , nuclear magnetic resonance , physics
A new calix[4]arene 1 with tetrathiafulvalene (TTF), quinone, and crown ether units in the lower rim was designed and synthesized with the aim to investigate the possibility to tune the metal‐ion promoted electron transfer by coordination of the crown ether unit with additional metal ions. Both absorption and electron spin resonance (ESR) spectroscopic studies clearly indicate that electron transfer occurs efficiently from TTF to the quinone units in the presence of Sc 3+ /Pb 2+ /Zn 2+ . Moreover, the intramolecular electron transfer within 1 induced by Zn 2+ can be switched off by addition of Na + and further turned on by addition of either Sc 3+ or Pb 2+ .