Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Thiazole Boron Difluoride Dyes with Large Stokes Shift, Solid State Emission and Room-Temperature Phosphorescence
 
research article

Thiazole Boron Difluoride Dyes with Large Stokes Shift, Solid State Emission and Room-Temperature Phosphorescence

Wang, Wei
•
Tong, Shuo
•
Wang, Qi-Qiang
Show more
September 19, 2022
Chemistry-A European Journal

The small Stokes shift and weak emission in the solid state are two main shortcomings associated with the boron-dipyrromethene (BODIPY) family of dyes. This study presents the design, synthesis and luminescent properties of boron difluoro complexes of 2-aryl-5-alkylamino-4-alkylaminocarbonylthiazoles. These dyes display Stokes shifts (Delta lambda, 77-101 nm) with quantum yields (phi(FL)) up to 64.9 and 34.7 % in toluene solution and in solid state, respectively. Some of these compounds exhibit dual fluorescence and room-temperature phosphorescence (RTP) emission properties with modulable phosphorescence quantum yields (phi(PL)) and lifetime (tau(p) up to 251 mu s). The presence of intramolecular H-bonds and negligible pi-pi stacking revealed by X-ray crystal structure might account for the observed large Stokes shift and significant solid-state emission of these fluorophores, while the enhanced spin-orbit coupling (SOC) of iodine and the self-assembly driven by halogen bonding, pi-pi and C-H center dot center dot center dot pi interactions could be responsible for the observed RTP of iodine containing phosphors.

  • Details
  • Metrics
Type
research article
DOI
10.1002/chem.202202507
Web of Science ID

WOS:000859163100001

Author(s)
Wang, Wei
Tong, Shuo
Wang, Qi-Qiang
Ao, Yu-Fei
Wang, De-Xian
Zhu, Jieping  
Date Issued

2022-09-19

Publisher

WILEY-V C H VERLAG GMBH

Published in
Chemistry-A European Journal
Article Number

e202202507

Subjects

Chemistry, Multidisciplinary

•

Chemistry

•

boron complex

•

dyes

•

halogen bonding

•

room-temperature phosphorescence

•

solid state emission

•

aggregation-induced emission

•

facile synthesis

•

excited-state

•

dual-emission

•

aza-bodipy

•

complexes

•

design

•

ligands

•

fluorophores

•

luminophores

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

Available on Infoscience
October 10, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/191377
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés