Synthesis, photophysical and electrochemical properties of perylene dyes

Abstract

a b s t r a c t Perylene dyes comprising: (i) 4-alkoxyphenylamino moiety in the 9-position as a strong donating group, (ii) cyanoacrylic acid as electron acceptor and anchoring group and (iii) a triple bond as short and rigid linker between perylene core and the acceptor group have been successfully synthesized. Their photophysical (i.e. absorption and emission spectra, molar extinction coefficients, fluorescence quantum yields and lifetime measurements) and electrochemical properties were investigated. The dyes display intense absorption in the visible exhibit high molar absorption coefficients making them good light harvesting materials for ss-DSCs.

Zeonex microstructured polymer optical fiber: fabrication friendly fibers for high temperature and humidity insensitive Bragg grating sensing

“…This fact is a direct consequence of Zeonex greater molecular weight, which represents an average polymer chain length. The weight-average molecular weight (M w ) of Topas 5013 was measured to be 76400 g/mol [22] whereas the M w of Zeonex 480R is approximately 480000 g/mol [29], which is six times larger than that of Topas 5013. The melt flow index that is the flowability, of a thermoplastic material in general decreases with increasing M w [30].…”

Templated Chromophore Assembly on Peptide Scaffolds: A Structural Evolution

“…For the synthesis of Y-Per 8,aPd-catalyzedS uzuki cross-coupling was carriedout between bromo-perylene 6 [28] and 4,4'-biphenyldiboronic acid (bis)pinacol ester 7 in the presence of [Pd(PPh 3 ) 4 ]a nd K 2 CO 3 to afford the corresponding boronic ester in 72 %yield. The subsequentremoval of the pinacolprotectingg roup by oxidative cleavagew ith NaIO 4 and treatment with a1m aqueous solution of HCl, afforded the desired boronic acid Y-Per 8 in 90 %y ield (Scheme 1).…”

An Unsymmetrical Perylene Diimide Dye Modified Carbon Felt Electrode as A Novel Electrochemical Platform for Dopamine Detection

“…The other significant property of perylene derivatives is their high charge transfer properties which pave the way for enhanced electrochemical properties. [9] Modifying perylene and bay positions of perylene core with suitable reagents results with directing the optical and electrochemical properties. Especially functionalizing the peri part, outcome with the regulation of electrochemical and spectroscopic properties.…”

“…Especially functionalizing the peri part, outcome with the regulation of electrochemical and spectroscopic properties. [9] For this reason, suitable perylene derivatives can be produced depending on the application type.…”