Issue 32, 2023

Two phases of trans-stilbene in a polystyrene matrix


Variability in the spectral properties of solid conformations of stilbene under various external conditions still remains obscure. The photophysical properties of trans-stilbene solution in solid polystyrene glass have been studied by absorption and time-resolved fluorescence. Concentration-induced quenching has been observed for small concentrations of stilbene. At large concentrations, the spectroscopic characteristics become split between the two phases of the sample: single-molecule properties are responsible for absorption, while the micro-crystalline phase dominates in fluorescence. Ab initio and molecular dynamics analyses suggest permanent twisting of the stilbene molecular structure upon crystallization, which supports spectroscopic phase separation.

Graphical abstract: Two phases of trans-stilbene in a polystyrene matrix

Article information

Article type
27 Jun 2023
11 Jul 2023
First published
17 Jul 2023
This article is Open Access
Creative Commons BY license

Phys. Chem. Chem. Phys., 2023,25, 21183-21190

Two phases of trans-stilbene in a polystyrene matrix

R. Karpicz, G. Kareivaite, M. Macernis, D. Abramavicius and L. Valkunas, Phys. Chem. Chem. Phys., 2023, 25, 21183 DOI: 10.1039/D3CP03015F

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