Structure and "surfactochromic" properties of conjugated polyelectrolyte (CPE): surfactant complexes between a cationic polythiophene and SDS in water

Supporting Information

Figure s1 shows the SANS data of SDS-D₂O system used in this paper. Figure s2 shows the Holtzer plot of the SANS data of P3TMAHT(SDS-d25)_x-D2O with x=1/5, 1/2, and 5. Figure s3 shows comparison of _{p r} functions as calculated for P3TMAHT(SDS)_x-D₂O and P3TMAHT(SDS-d25)_x-D2O for x1. Figure s4 shows the photoexcitation spectra of 0.1 mg/mL P3TMAHT-D₂O and P3TMAHT(SDS)_x-D₂O with x=1/5-5.

0.01 0.1 10

10 10 10 10

-4 -3 -2 -1 0

I(q)/(c-cmc) (cm-1mg-1mL)

q(Å^-1) SDS-D₂O

10.55 mg/mL 5.28 mg/mL

~q^-4

Figure s1. SANS data of SDS-D2O at concentrations 5.28 mg/mL (open cyan circles) and 10.55 mg/mL (open blue circles). Dashed line shows a -4 decay for comparison. T=20 ^oC.

q(Å^-1)

0.01 0.02 0.03 0.04 0.05 0

0.01 0.02 0.03 0.04

P3TMAHT(SDS-d₂₅)_x-D₂O x=1/5 x=1/2 x=5

Iq (cm-1Å-1)

Figure s2. Holtzer representation of the SANS data of P3TMAHT(SDS-d25)_x-D2O for x=1/5 (solid red squares), x=1/2 (solid black spheres), and x=5 (solid cyan upper triangles). The overall concentration was ~10 mg/mL. T=20 ^oC.

1

0 10 20 30 40 50 60 70 80 90 100 0

0.2 0.4 0.6 0.8 1.0

rod x=1/2 x=1/5

x=1 rod sheet

x=1/2, SDS-d25

x=1/2, SDS x=1/5, SDS-d25

x=1/5, SDS

x=1, SDS x=1, SDS-d₂₅

p(r) (arbit. units)

r (Å)

Figure s3. Comparison of distance distribution functions as estimated from the SANS data of P3TMAHT(SDS)_x-D₂O P3TMAHT(SDS-d₂₅)_x-D₂O for x=1/5 (solid and dotted red lines) and for x=1/2 (solid and dotted black lines) using an elongated rod-like particle model; and for x=1 (solid and dotted green line) using a sheet-like particle model. The functions are calculated by Glatter software and correspond to the fits shown in Figs. 3a and 5.

350 400 450 500 550 600 65 0

0.2 0.4 0.6 0.8 1.0

Normalised Intensity

Wavelength (nm)

0 x = 0

x = 1/5 x = 1

x = 5 0.1 mg/mL

x = 0 x = 1

x = 5

x = 1/5

Figure s4. Photoexcitation spectra of 0.1 mg/mL P3TMAHT-D2O (solid blue curve) and P3TMAHT(SDS)_x-D2O for x=1/5 (dashed red curve), x=1 (dotted green curve), and x=5 (dashed and dotted cyan curve). The overall concentration was ~0.1 mg/ml. in all cases. The data were detected at em = 680 nm. T=20 ^oC.

2