3 years ago

Self-Assembly Tuning of α-Cyanostilbene Fluorogens: Aggregates to Nanostructures

Self-Assembly Tuning of α-Cyanostilbene Fluorogens: Aggregates to Nanostructures
Mithun Radhakrishna, Anuji K. Vasu, Sriram Kanvah
Two AIE active α-cyanostilbene fluorophores substituted with octyl and hexadecyl chains were synthesized and examined for their absorption and fluorescence properties. The alkoxy substitution tunes the self-assembly in water and exhibits an intensity enhanced bathochromic shift, resulting in well-defined nanospheres with the formation of nice dendrimeric structures. Monte Carlo simulations validate our experimental observations and show the greater propensity of self-assembly formation for cyanostilbene containing a hexadecyl chain compared to a derivative containing an octyl chain. The results are substantiated by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and dynamic light scattering (DLS) studies. Such tunable self-assembled nanostructures seem promising for material and biological applications.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b06225

DOI: 10.1021/acs.jpcc.7b06225

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