Fig. 7: Absorption and emission spectra as well as atomic force microscopic (AFM) images of poly(220-b-1b40).

Absorption (a) and emission (b) spectra of poly(220-b-1b40) in the THF/IPA mixture (c = 0.3 mg/mL and λexc = 365 nm). Insets show images of poly(220-b-1b40) in IPA and THF under room light (a) and UV light at 365 nm (b). AFM height images of poly(220-b-1b40) cast from THF (c) and IPA (d) solutions onto silicon wafers.