Dr. S. B. Sukumaran: "New Molecular Designs for Functionalizable Donor-Acceptor Strapped Macromolecules and Polymers"

Organisch-chemisches Kolloquium

The Institute of Organic Chemistry invites to the lecture of

Dr. Santhosh Babu Sukumaran, CSIR-National Chemical Laboratory, Pune, India

who will be talking about:

 "New Molecular Designs for Functionalizable Donor-Acceptor Strapped Macromolecules and Polymers"

abstract:

Two important classes of molecules, thiophene and perylene bisimide (PBIs), serve as the foundation for most of the important donor-acceptor-based small molecules and polymers. The synthetic versatility and tunable redox properties made oligothiophenes one of the best donor molecules.^[1] Perylene bisimide is another extensively studied and widely used acceptor molecule.^[2] Both oligothiophene and PBI-based materials are chemically and thermally stable. Moreover, the rich photo and electrochemistry of these molecules provide a wide range of features to explore, such as visible light absorption, tunable emission, quantum yield, and characteristic long-lived excited states, as well as the ability to undergo efficient energy and electron transfer reactions, making them ideal components in donor-acceptor assemblies. Hence, PBI and oligothiophene-based donor-acceptor materials found diverse applications in optoelectronic and energy storage devices, sensors, lasers, etc. Still, there are new opportunities for this donor-acceptor combination to be more functional. One among them is PBI-oligothiophene-based functionalizable macrocycles. Donor-acceptor linked ????-conjugated macrocycles are inspiring as modular building blocks for the development of new functional materials (1D and 2D polymers) and supramolecular structures that allow light harvesting, energy transfer and electron transfer. Our recent findings in the area of donor-strapped PBI-based macrocycles revealed the importance of new molecular designs for further functionalization of macrocycles.^[3]

References

1. Chem. Rev. 2009, 109, 1141-1276; 2. Chem. Rev. 2016, 116, 962-1052; Chem. Commun. 2004, 14, 1564-1579; 3. Angew. Chem. Int. Ed. 2023, 62, e202212934; Org. Chem. Front. 2023, DOI:10.1039/d3qo01060k.