Hexagonal polypyrrole nanosheets from interface driven heterogeneous hybridization and self-assembly for photothermal cancer treatmentElectronic supplementary information (ESI) available: Experimental section, FTIR spectra, TEM images, DLS data, extinction coefficient, Tauc plot and release curves. See DOI: 10.1039/c9cc00809h

Hexagonal polypyrrole (PPy) nanosheets with highly ordered lateral orientation were developed by the generation and directed self-assembly of dopamine induced FeOOH-PPy heterostructures on nanoscale THF/water interfaces. The size-controlled nanosheets possess attractive photothermal conversion properties, which facilitate efficient photothermal inhibition of cancer cells. Hexagonal-shaped polypyrrole (PPy) nanosheets were fabricated by the generation and anisotropic self-assembly of FeOOH-PPy heterostructures for photothermal cancer treatment.