A low-band-gap (Eg ∼ 1.6 eV) conjugated thiophene copolymer 496 with pyrrole and BT units was synthesized via Stille coupling [581]. They showed emission in the NIR region (λEL ∼ 800 nm) with turn-on voltage below 4 V but with very low efficiency (Chart 2.116).
CHART 2.114Chemical structure of a phenylene–thiophene copolymer.
TABLE 2.8Electrochemical and Optical Properties of Oxadiazole–Thiophene Copolymers
a Relative quantum yield vs. quinine sulfate.
b From Huang, W., Meng, H., Yu, W.-L., Gao, J., and Heeger, A.J., Adv. Mater., 10, 593, 1998. ...
Get Organic Light-Emitting Materials and Devices, 2nd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
