Molecular Wire Encapsulated into π Organogels: Efficient Supramolecular Light-Harvesting Antennae with Color-Tunable Emission


  • We thank the Department of Science and Technology (DST), New Delhi, for financial support under the Nano Science and Technology Initiative. A.A. is a Ramanna Fellow of the DST. V.K.P. and C.V. are grateful to the Council of Scientific and Industrial Research (CSIR) for fellowships. We acknowledge the help of the Rajiv Gandhi Centre for Biotechnology for fluorescence microscopic images and Reji Varghese for AFM analysis. This is contribution No. NIST-PPG-250.


original image

Reaping the benefit: A supramolecular light-harvesting antenna has been developed by encapsulating small amounts of a π-conjugated oligomer (molecular wire) within a self-assembled gel-forming donor scaffold. The supramolecular tapes of oligo(p-phenylenevinylene)s facilitate fast exciton migration and funneling of the excitation energy to the encapsulated molecular wire, thereby resulting in intense red emission (see picture).