Detail publikace

Green, red and infrared emitting polymorphs of sterically hindered push-pull substituted stilbenes

PAUK, K. LUŇÁK, S. RŮŽIČKA, A. MARKOVÁ, A. MAUSOVÁ, A. KRATOCHVÍL, M. MELÁNOVÁ, K. WEITER, M. IMRAMOVSKÝ, A. VALA, M.

Originální název

Green, red and infrared emitting polymorphs of sterically hindered push-pull substituted stilbenes

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The synthesis, XRD single crystal structure, powder XRD and solid-state fluorescence of two DPA-DPS-EWG derivatives (DPA = diphenylamino, DPS = 2,5-diphenylstilbene, EWG = carbaldehyde or dicyanovinylene) is described. Absorption and fluorescence maxima in solvents of various polarity show bathochromic shift with respect to parent DPA-stilbene-EWGs. Electronic coupling in dimers and potential twist elasticity of monomers were studied by density functional theory. Both polymorphs of CHO derivative emit green fluorescence (527 and 550 nm) of moderate intensity (10 % and 5 %) in polycrystalline powder form. Moderate (5 %) red (672 nm) monomer-like emission was also observed for the first polymorph of DCV derivative, while more intense (32 %) infrared (733 nm) emission of the second polymorph was ascribed to the excimer fluorescence.

Klíčová slova

Donor-acceptor systems; Fluorescence; Density functional calculations; Crystal engineering, Polymorphism

Autoři

PAUK, K.; LUŇÁK, S.; RŮŽIČKA, A.; MARKOVÁ, A.; MAUSOVÁ, A.; KRATOCHVÍL, M.; MELÁNOVÁ, K.; WEITER, M.; IMRAMOVSKÝ, A.; VALA, M.

Vydáno

29. 10. 2020

Nakladatel

Chemistry - A European Journal, Wiley-VCH

Místo

Weinheim, Germany

ISSN

1521-3765

Periodikum

Chemistry - A European Journal

Ročník

26

Číslo

2020

Stát

Spolková republika Německo

Strany od

4341

Strany do

4348

Strany počet

9

URL

https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/chem.202004419

BibTex

@article{BUT165737,
  author="PAUK, K. and LUŇÁK, S. and RŮŽIČKA, A. and MARKOVÁ, A. and MAUSOVÁ, A. and KRATOCHVÍL, M. and MELÁNOVÁ, K. and WEITER, M. and IMRAMOVSKÝ, A. and VALA, M.",
  title="Green, red and infrared emitting polymorphs of sterically hindered push-pull substituted stilbenes",
  journal="Chemistry - A European Journal",
  year="2020",
  volume="26",
  number="2020",
  pages="4341--4348",
  doi="10.1002/chem.202004419",
  issn="1521-3765",
  url="https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/chem.202004419"
}