Speaker: Anindita Das, Indian Association for the Cultivation of Science, School of Applied and Interdisciplinary
Sciences, Jadavpur, India

Abstract:

Controlling self-assembly of π-systems in hierarchical levels is critical for regulating their
photophysical properties, which is a crucial factor in devising many optoelectronic materials.
Our group is interested in developing different supramolecular strategies for complex higher-
ordered supramolecular organization of multicomponent π-systems with precise
microstructural control. In this presentation, I will discuss two approaches: First, through
strategic molecular engineering, we target multiple self-assembly pathways in supramolecular
polymerization of hydrogen-bonding amide-functionalized dipolar π-systems, which allows
manifestation of kinetically driven sequence-controlled heterostructures through seeding
approaches.1,2 Second, by employing crystallization-driven self-assembly of chromophore-
conjugated crystallizable polymers, we program two-dimensional (2D) monolayered
nanostructures of π-systems with tailorable surface properties.3,4 In this case, the π-assembly
on the 2D surface is primarily controlled by the polymer chain crystallization, which enables
structural predictability. The challenges and future scopes of these two approaches will be
discussed with specific examples.