Publication detail

Colour-tuneable solid-state fluorescence of crystalline powders formed from push-pull substituted 2,5-diphenyl-stilbenes

PAUK, K. LUŇÁK, S. RŮŽIČKA, A. MARKOVÁ, A. TEICHMANOVÁ, K. MAUSOVÁ, A. KRATOCHVÍL, M. SMOLKA, R. MIKYSEK, T. WEITER, M. IMRAMOVSKÝ, A. VALA, M.

Original Title

Colour-tuneable solid-state fluorescence of crystalline powders formed from push-pull substituted 2,5-diphenyl-stilbenes

Type

journal article in Web of Science

Language

English

Original Abstract

The solid-state fluorescence (SSF) of eight DPA-DPS-EWG derivatives (DPA = diphenylamino, DPS = 2,5-diphenyl-stilbene building block, EWG = electron withdrawing group) was studied. Varying the strength of the EWG enabled the tuning of the LUMO energy within a range broader than 1 eV, while the simultaneous changes of HOMO energy were less than 0.1 eV, according to cyclic voltammetry. The fluorescence maxima in dichloromethane laid between 483 and 752 nm and exhibited monoexponential decay and a photoluminescence quantum yield (PLQY) always higher than 35%. Six derivatives with a SSF PLQY higher than 10% in polycrystalline powder form continuously covered the range from 475 to 733 nm. Three components of SSF multiexponential decay, obtained by time-resolved fluorescence spectroscopy, were ascribed to exciton migration to nonfluorescent traps, and monomer-like and aggregate fluorescence. The character of the emitting aggregates was evaluated by quantum chemical modelling based on time-dependent density functional theory computations, carried out on the dimer arrangements obtained by X-ray diffractometry of the single crystals.

Keywords

organic dyes, diphenyl-stilbene, solid state fluorescence, NIR fluorescence

Authors

PAUK, K.; LUŇÁK, S.; RŮŽIČKA, A.; MARKOVÁ, A.; TEICHMANOVÁ, K.; MAUSOVÁ, A.; KRATOCHVÍL, M.; SMOLKA, R.; MIKYSEK, T.; WEITER, M.; IMRAMOVSKÝ, A.; VALA, M.

Released

8. 12. 2022

Publisher

ROYAL SOC CHEMISTRY

Location

CAMBRIDGE

ISBN

2046-2069

Periodical

RSC Advances

Year of study

54

Number

December

State

United Kingdom of Great Britain and Northern Ireland

Pages from

34797

Pages to

34807

Pages count

11

URL

https://pubs.rsc.org/en/content/articlepdf/2022/ra/d2ra05593g

BibTex

@article{BUT181372,
  author="PAUK, K. and LUŇÁK, S. and RŮŽIČKA, A. and MARKOVÁ, A. and TEICHMANOVÁ, K. and MAUSOVÁ, A. and KRATOCHVÍL, M. and SMOLKA, R. and MIKYSEK, T. and WEITER, M. and IMRAMOVSKÝ, A. and VALA, M.",
  title="Colour-tuneable solid-state fluorescence of crystalline powders formed from push-pull substituted 2,5-diphenyl-stilbenes",
  journal="RSC Advances",
  year="2022",
  volume="54",
  number="December",
  pages="34797--34807",
  doi="10.1039/d2ra05593g",
  issn="2046-2069",
  url="https://pubs.rsc.org/en/content/articlepdf/2022/ra/d2ra05593g"
}