Optical and electronic properties of P32–34.

Polymer	λ max,ab a (nm)	λ max,em a (nm)	λ onset a (nm)	LUMOb (eV)	HOMOb (eV)	E g,CV b (eV)
P32	465	521	538	−2.99	−5.56	2.57
P33	530	550	555	−3.43	−5.23	1.80
P34	466	520	534	−3.03	−5.46	2.43

^aFrom UV-vis absorption spectroscopy in CH₂Cl₂ solution.

^bFrom CV measurements in 0.1 M nBu₄NClO₄ in CH₃CN measuring polymer thin films cast onto the working electrode.