Work

Thioflavin T Inspirations: On the Photophysical and Aggregation Properties of Fluorescent Difluoroborates Based on the Benzothiazole Core

Year: 2025

Type: article

Abstract: In this work, we investigated a novel series of fluorescent dyes based on benzothiazole core substituted with a palette of donor groups that differ in size, shape, and character (alkyl vs aromatic). These dyes exhibit an intramolecular charge transfer state in their electronic structure. The photophysical properties of the newly synthesized dyes were studied with an eye toward aggregation effects in solvents and mixtures of solvents differing in polarity. Moreover, multiphoton absorption studies were performed to determine the potential of the dyes in two-photon microscopy. The results of spectroscopic measurements were supported by electronic structure calculations using coupled-cluster theory. Overall, the results provide an indication regarding the optimal substituents to achieve bright emission in various media and how these properties are related to aggregation effects.

Source: The Journal of Physical Chemistry A

DOI: 10.1021/acs.jpca.5c01254

Authors: Patryk Rybczyński, Agata Hajda, Robert Zaleśny, Borys Ośmiałowski, Joanna Olesiak-Bańska

Institutions: Nicolaus Copernicus University, Wrocław University of Science and Technology

Language: English

Topic: Luminescence and Fluorescent Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Funder: Narodowe Centrum Nauki

Award: G3154317926