Self-Assembly of a Conjugated Triblock Copolymer at the Air-Water Interface


Controlling the self-assembly of highly luminescent conjugated polymers is essential for preparing various optoelectronic devices. In this study, a polyisoprene-b-polystyrene-b-poly(3-hexylthiophene) (PI-PS-P3HT) triblock copolymer was synthesized and readily self-assembled into network-like morphologies via dewetting at the air-water interface. Interestingly, the monolayer thick film displayed high photoluminescence (PL) as a result of successfully transferring the amorphous conjugated P3HT chains in the PI-PS-P3HT triblock copolymer from the solution state to the solid state. A model was proposed to illustrate the supramolecular organization of the PI-PS-P3HT monolayer. To the best of our knowledge, this is the first study of a hydrophobic conjugated block copolymer at the air-water interface, from which the conjugated polymer-based monolayer with highly efficient PL formed by dewetting was achieved.


Includes supplementary material


Monomolecular films, Block copolymers, Water, Conjugated polymers

NSF (Career DMR-0956116); Welch Foundation (AT-1740); NSF-MGI (CHE-1126177)


©2013 The Royal Society of Chemistry. This article may not be further made available or distributed.