Journal
SMALL
Volume 8, Issue 4, Pages 578-584Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201101917
Keywords
self-assembly; molecular responsive gels; redox reactions; tetrathiafulvalene; chloranil
Categories
Funding
- NSFC
- State Basic Program
- Chinese Academy of Sciences
- NSFC-DFG [TRR61]
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The self-assembly of a tetrathiafulvalene (TTF)-based molecular gelator with a dendron substituent into a gel is described. Scanning electron microscope and atomic force microscope studies show that the xerogels exhibit rope-like frameworks or interwoven nanofibers, depending on the polarity of solvent from which the gel is formed. Gels containing chloranil can also be successfully prepared. Interestingly, this two-component gel can be easily transformed into solution after the addition of either Sc3+ or Pb2+. Both absorption and electron spin resonance (ESR) spectroscopic investigations reveal that the TTF unit is oxidized into TTF.+ by chloranil in the presence of either Sc3+ or Pb2+. Moreover, the gel phase can be restored by reduction of TTF.+ into the neutral form using magnesium.
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