Ferrocene-Donor and 4,5-Dicyanoimidazole-Acceptor Moieties in Charge- Transfer Chromophores with p Linkers Tailored for Second-Order Nonlinear Optics

Kód výsledku v IS VaVaI

RIV/00216275:25310/13:39896116 - isvavai.cz

Výsledek na webu

http://dx.doi.org/10.1002/asia.201200963

DOI - Digital Object Identifier

10.1002/asia.201200963

Jazyk výsledku

angličtina

Název v původním jazyce

Ferrocene-Donor and 4,5-Dicyanoimidazole-Acceptor Moieties in Charge- Transfer Chromophores with p Linkers Tailored for Second-Order Nonlinear Optics

Popis výsledku v původním jazyce

A series of new nonlinear optical chromophores (1?15) that were comprised of ferrocene-donor and 4,5-dicyanoimidazole-acceptor moieties and various p linkers of different length were synthesized. Support for the presence of significant DA interactions inthese NLO-phores was obtained from the evaluation of the quinoid character of the 1,4-phenylene moieties and their electronic absorption spectra, which featured intense high-energy (HE) bands that were accompanied by less-intense low-energy (LE) bands.The redox behavior of these compounds was investigated by cyclic voltammetry (CV) and by rotating-disc voltammetry (RDV); their electrochemical gaps decreased steadily from 2.64 to 2.09 V. In addition to the experimentally obtained data, DFT calculationsof their absorption spectra, HOMO/LUMO levels, and secondorder polarizabilities (b) (2w,w,w) were performed. A structure?property relationship study that was performed by systematically altering the p linker revealed that the intramolecu

Název v anglickém jazyce

Ferrocene-Donor and 4,5-Dicyanoimidazole-Acceptor Moieties in Charge- Transfer Chromophores with p Linkers Tailored for Second-Order Nonlinear Optics

Popis výsledku anglicky

A series of new nonlinear optical chromophores (1?15) that were comprised of ferrocene-donor and 4,5-dicyanoimidazole-acceptor moieties and various p linkers of different length were synthesized. Support for the presence of significant DA interactions inthese NLO-phores was obtained from the evaluation of the quinoid character of the 1,4-phenylene moieties and their electronic absorption spectra, which featured intense high-energy (HE) bands that were accompanied by less-intense low-energy (LE) bands.The redox behavior of these compounds was investigated by cyclic voltammetry (CV) and by rotating-disc voltammetry (RDV); their electrochemical gaps decreased steadily from 2.64 to 2.09 V. In addition to the experimentally obtained data, DFT calculationsof their absorption spectra, HOMO/LUMO levels, and secondorder polarizabilities (b) (2w,w,w) were performed. A structure?property relationship study that was performed by systematically altering the p linker revealed that the intramolecu

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CC - Organická chemie

OECD FORD obor

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Projekt

GAP106/12/0392: Vliv struktury organických dipolárních chromoforů na jejich nelineárně optické vlastnosti.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chemistry - An Asian Journal

ISSN

1861-4728

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

465-475

Kód UT WoS článku

000314177300019

EID výsledku v databázi Scopus

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