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Solvatochromism of new tetraphenylethene luminogens: integration of aggregation-induced emission and conjugation-induced rigidity for emitting strongly in both solid and solution state

Research Authors
Abdelreheem A Saddik, Ahmed AK Mohammed, Satish K Talloj, Adel M Kamal El-Dean, Osama Younis
Research Abstract

In this study, we synthesized and characterized four tetraphenylethene (TPE) analogs, investigated their photophysical properties, and conducted quantum chemical calculations. Some molecules exhibited aggregation-induced emission enhancement behavior and showed efficient emission in both solid and solution states. Solvatochromism was observed in particular derivatives, with solvent polarity influencing either a bathochromic or hypsochromic shift, indicating the occurrence of photoinduced intramolecular charge transfer (ICT) processes. Quantum chemical calculations confirmed that variations in molecular packing and rigidity among the TPE analogs contributed to their diverse behavior. The study showcases aggregation in luminophores without significant impact on the excited state and highlights how minor alterations in terminal substituents can lead to unconventional behavior. These findings have implications for the development of luminescent materials. Furthermore, the synthesized compounds exhibited biocompatibility, suggesting their potential for cell imaging applications.

Research Date
Research Department
Research Journal
RSC Advances
Research Publisher
Royal Society of Chemistry
Research Rank
Q2
Research Vol
14
Research Website
https://pubs.rsc.org/en/content/articlehtml/2024/ra/d4ra00719k
Research Year
2024
Research Pages
6072-6084