Physical Chemistry Chemical Physics 2012-10-21

Oxazine-1 J-aggregates in polymer nanohybrids.

Umberto Giovanella, Giuseppe Leone, Giovanni Ricci, Tersilla Virgili, Inma Suarez Lopez, Sai Kiran Rajendran, Chiara Botta

Index: Phys. Chem. Chem. Phys. 14(39) , 13646-50, (2012)

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Abstract

In a smart solution-processable luminescent poly(norbornene)/oxazine-1 (Ox1) intercalated fluoromica nanohybrid, the supramolecular organization of the Ox1 dyes can be tuned at the nanoscale level and a deep red emission band switched on by inducing a phase segregation of aligned molecules within the fluoromica layered scaffold. By combining low-temperature photoluminescence and ultrafast pump-probe spectroscopy we prove that the nanoconstrained Ox1 molecules are organized in a J-type packing and we highlight the critical factor that controls such a supramolecular dye arrangement.