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Linear and Star‐Shaped Extended Di‐ and Tristyrylbenzenes: Synthesis, Characterization and Optical Response to Acid and Metal Ions
Author(s) -
Zhang Hao,
Kotlear Eugen A.,
Kushida Soh,
Maier Steffen,
Rominger Frank,
Freudenberg Jan,
Bunz Uwe H. F.
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202000893
Subject(s) - metal ions in aqueous solution , ion , metal , chemistry , pyridine , fluorescence , spectral line , characterization (materials science) , redshift , crystallography , materials science , physics , medicinal chemistry , nanotechnology , organic chemistry , optics , astrophysics , astronomy , galaxy
Two linear 1,4‐distyrylbenzenes and five star‐shaped 1,3,5‐tristyrylbenzene derivatives ( L 2a and L 2b , Y 0 –Y 3 and Y NBu ) were synthesized and spectroscopically characterized. The photophysical properties, optical response to acid and metal ions were investigated. Upon backbone extension of linear distyrylbenzenes or the introduction of dibutylanilines, the electronic spectra are redshifted. Incorporation of electron‐deficient pyridyl units does not significantly affect the optical properties. Variation of the number of pyridine rings and substitution pattern tune the fluorescence response to acids and metal ions. The novel arenes discriminate Al 3+ , Mn 2+ , Fe 3+ , Fe 2+ , Cd 2+ , Ag + and Hg 2+ .