Navigation überspringen
Universitätsbibliothek Heidelberg
Status: Bibliographieeintrag

Verfügbarkeit
Standort: ---
Exemplare: ---
heiBIB
 Online-Ressource
Verfasst von:Belyaev, Andrei [VerfasserIn]   i
 Chen, Yi-Ting [VerfasserIn]   i
 Liu, Zong-Ying [VerfasserIn]   i
 Hindenberg, Philip [VerfasserIn]   i
 Wu, Cheng-Ham [VerfasserIn]   i
 Chou, Pi‐Tai [VerfasserIn]   i
 Romero-Nieto, Carlos [VerfasserIn]   i
 Koshevoy, Igor O. [VerfasserIn]   i
Titel:Intramolecular phosphacyclization
Titelzusatz:polyaromatic phosphonium p-heterocycles with wide-tuning optical properties
Verf.angabe:Andrey Belyaev, Yi-Ting Chen, Zong-Ying Liu, Philip Hindenberg, Cheng-Ham Wu, Pi-Tai Chou, Carlos Romero‐Nieto, and Igor O. Koshevoy
E-Jahr:2019
Jahr:21 February 2019
Umfang:10 S.
Fussnoten:Gesehen am 16.10.2019
Titel Quelle:Enthalten in: Chemistry - a European journal
Ort Quelle:Weinheim : Wiley-VCH, 1995
Jahr Quelle:2019
Band/Heft Quelle:25(2019), 25, Seite 6332-6341
ISSN Quelle:1521-3765
Abstract:Rationally designed cationic phospha-polyaromatic fluorophores were prepared through intramolecular cyclization of the tertiary ortho-(acene)phenylene-phosphines mediated by CuII triflate. As a result of phosphorus quaternization, heterocyclic phosphonium salts 1 c-3 c, derived from naphthalene, phenanthrene, and anthracene cores, exhibited very intense blue to green fluorescence (Φem=0.38-0.99) and high photostability in aqueous medium. The structure-emission relationship was further investigated by tailoring the electron-donating functions to the anthracene moiety to give dyes 4 c-6 c with charge-transfer character. The latter significantly decreases the emission energy to reach near-IR region. Thus, the intramolecular phosphacyclization renders an ultra-wide tuning of fluorescence from 420 nm (1 c) to 780 nm (6 c) in solution, extended to 825 nm for 6 c in the solid state with quantum efficiency of approximately 0.07. The physical behavior of these new dyes was studied spectroscopically, crystallographically, and electrochemically, whereas computational analysis was used to correlate the experimental data with molecular electronic structures. The excellent stability, water solubility, and attractive photophysical characteristics make these phosphonium heterocycles powerful tools in cell imaging.
DOI:doi:10.1002/chem.201900136
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: https://doi.org/10.1002/chem.201900136
 Volltext: https://www.onlinelibrary.wiley.com/doi/abs/10.1002/chem.201900136
 DOI: https://doi.org/10.1002/chem.201900136
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:cyclization
 dyes
 imaging
 optoelectronic properties
 phosphorus heterocycles
K10plus-PPN:1679015761
Verknüpfungen:→ Zeitschrift

Permanenter Link auf diesen Titel (bookmarkfähig):  https://katalog.ub.uni-heidelberg.de/titel/68441173   QR-Code
zum Seitenanfang