Molecular Design of Novel Self-Oscillating
Polymer Chains Fuelled by Organic Acid Under Constant Condition
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(C)(D)Fig. 8. Oscillating profiles of transmittance at 20°C for poly(NIPAAm-co-Ru(bpy) 3 ): (A)
0.25wt%, and poly(NIPAAm-co-Ru(bpy) 3 -co-MAPTAC) solutions at several polymer
concentrations: (B) 0.25 wt% , (C) 0.75 wt% and (D) 1.0 wt%. (Reprinted ref. 40, Copyright
Wiley-VCH Verlag GmbH & Co. KGaA. Reproduced with permission.)
Figure 8 shows the self-oscillating behaviors of the two types of the polymer solution: One is
the conventional-type self-oscillating polymer solution, and the other is MAPTAC-
containing one. As shown in Figure 8(A), we can see the damping behavior of the
aggregation-disaggregation self-oscillation, that is, the amplitude of the transmittance self-
oscillation decreases with time due to the increase in the size of the polymer aggregations.
As the aggregation-disaggregaiton self-oscillation repeates, the size of the polymer