title: Activation energy of aggregation-disaggregation  self-oscillation of polymer chain.
abstract: In this paper, we investigated the activation energies of the aggregation−disaggregation self-oscillation induced by the Belousov-Zhabotinsky (BZ) reaction by utilizing the nonthermoresponsive polymer chain in a wide temperature range. This is because the conventional type self-oscillating polymer chain, with thermoresponsive poly(Nisopropylacrylamide) (poly(NIPAAm) main-chain covalently bonded to the ruthenium catalyst (Ru(bpy)(3)) of the BZ reaction, cannot evaluate the activation energy over the lower critical solution temperature (LCST). The nonthermoresponsive self-oscillating polymer chain is composed of a poly-vinylpyrrolidone (PVP) main-chain with the ruthenium catalyst (Ru(bpy)(3)). As a result, we clarified that the activation energy of the aggregation−disaggregation self-oscillation of the polymer chain is hardly affected by the concentrations of the BZ substrates. In addition, the activation energy of the nonthermoresponsive self-oscillating polymer chain was found to be almost the same value as normal BZ reaction, i.e., not including the self-oscillating polymer system with Ru moiety.
authors.affiliation: Nanosystem Research Institute, NRI, National Institute of Advanced Science and Technology, AIST, Central 5-2, 1-1-1 Higashi, Tsukuba 305-8565, Japan. y-hara@aist.go.jp
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Hara
authors.forename: Rumana A
authors.initials: RA
authors.lastname: Jahan
mesh_terms: D000178:Acrylamides / Q000737:chemistry*; D002384:Catalysis; D011232:Chemical Precipitation; D009991:Oscillometry; D058105:Polymerization; D011108:Polymers / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry; D013696:Temperature; D013816:Thermodynamics
chemical_list: D000178:Acrylamides; D011108:Polymers; D012428:Ruthenium