Irradiation Effect on Stability of Plasticized Poly(Fluorostyrene) Isomers in Solution

Table 1

Relative intensities of the ratio (𝐼^𝑜_EX/𝐼_EX)^∗ for intensities of excimer fluorescence bands and excimer fluorescence photoquenching rate constant values (k _PQ) of irradiated pure and blended (o-PFS), (m-PFS). and (p-PFS) in DCE solutions.

𝜆(emiss.) (nm)	Polymer	Plasticizer (%)	Time (min)	𝑅^2	(𝐼^𝑜EX/𝐼EX)^∗	𝑘PQ
320	o-PFS	—	180	0.980	1.352	0.00206
o-PFS + DOP
317	o-PFS	5×10^−5 M	180	0.979	1.183	0.00181
321	o-PFS	1×10^−4 M	180	0.967	1.172	0.00101
319	o-PFS	5×10^−4 M	180	0.989	1.160	0.00091
o-PFS + DOT
319	o-PFS	5×10^−5 M	180	0.962	1.172	0.00105
320	o-PFS	1×10^−4 M	180	0.968	1.148	0.00088
323	o-PFS	5×10^−4 M	180	0.994	1.125	0.00070
320	m-PFS	—	180	0.978	1.223	0.00122
m-PFS + DOP
320	m-PFS	5×10^−5 M	180	0.976	1.185	0.00098
320	m-PFS	1×10^−4 M	180	0.985	1.155	0.00078
321	m-PFS	5×10^−4 M	180	0.988	1.131	0.00069
m-PFS + DOT
321	m-PFS	5×10^−5 M	180	0.992	1.160	0.00081
320	m-PFS	1×10^−4 M	180	0.974	1.134	0.00068
322	m-PFS	5×10^−4 M	180	0.979	1.129	0.00060
339	p-PFS	—	165	0.974	1.201	0.00186
p-PFS + DOP
351	p-PFS	5×10^−5 M	180	0.930	1.173	0.0011
346	p-PFS	1×10^−4 M	180	0.935	1.102	0.00068
348	p-PFS	5×10^−4 M	180	0.949	1.100	0.00059
p-PFS + DOT
344	p-PFS	5×10^−5 M	180	0.995	1.102	0.00063
345	p-PFS	1×10^−4 M	180	0.968	1.084	0.00057
345	p-PFS	5×10^−4 M	180	0.959	1.071	0.00045