Metallosupramolecular Gels Made of Four-armed Poly(ethylene glycol)s Having Terpyridine Termini

Four-armed poly(ethylene glycol) having 2,2':6',2 ''-terpyridine) termini was synthesized as a component unit and further utilized for preparation of metallosupramolecular gels by the addition of FeCl2. The formed gels collapsed by the addition of NH3.