Premium
Nanoscale Imaging of the Interface Dynamics in Polymer Blends by Femtosecond Pump‐Probe Confocal Microscopy
Author(s) -
Polli Dario,
Grancini Giulia,
Clark Jenny,
Celebrano Michele,
Virgili Tersilla,
Cerullo Giulio,
Lanzani Guglielmo
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200904387
Subject(s) - femtosecond , polyfluorene , materials science , nanoscopic scale , microscopy , microscope , confocal microscopy , resolution (logic) , polymer , optical microscope , confocal , nanotechnology , interface (matter) , metastability , optoelectronics , optics , computer science , laser , chemistry , physics , composite material , scanning electron microscope , organic chemistry , artificial intelligence , copolymer , capillary number , capillary action
A polymer blend of a polyfluorene and an inert matrix is imaged with an innovative time‐resolved confocal microscope. Local pump‐probe signals (excited‐state generation and deactivation) with sub‐200‐fs temporal resolution and 300‐nm spatial resolution are measured. Peculiar dynamics at the interface between the segregated domains, invisible to standard optical microscopy, due to different inter‐chain interactions and charge separation photophysics are detected.