Photoinduced supramolecular chirality and spontaneous surface patterning in high-performance azo materials

Journal of the European Optical Society-Rapid Publications

Table 2 Summarized results of average distances of periodic patterns Λ and estimated modulation depths h

Polymer	Thickness d [nm]	Linear polarization				Circular polarization
		30 min		60 min		30 min		60 min
		Λ[nm]	h [nm]	Λ[nm]	h [nm]	Λ[nm]	h [nm]	Λ[nm]	h [nm]
1	101	401.9 ±2.4	51	406.3 ±1.1	51	412.7 ±2.4	68	420.6 ±1.4	58
	493	434.9 ±1.3	214	930.5 ±9.4	270	412.9 ±2.3	168	1472.5 ±31.3	293
2	580			412.7 ±0.9	22
3	886			440.6 ±3.7	70

While values for Λ were obtained by using AFM images and calculations with a Python program, the values for h were estimated by a heuristic determination of the height profile with tails cut off. The listed values are the difference of maximum and minimum value in the color range map of each AFM image (see Figs. 6 and 7)