Univerzita Pardubice Fakulta chemicko- technologická

Univerzita Pardubice

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Publikace detail

Electron withdrawing properties of malonic acid derivatives: a comparative study.

Autoři: Klikar Milan | Bureš Filip

Rok: 2015

Druh publikace: ostatní - přednáška nebo poster

Strana od-do: nestránkováno

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	Srovnávací studie elektronakceptorních vlastností derivátů malonové kyseliny.	Celkem bylo připraveno 32 push-pull chromoforů, jež jsou složeny z donorní 2-(piperidin-1-yl)thiofenové části a rozmanitých akceptorních jednotek založených na kyselině malonové. Tato rozsáhlá skupina modelových molekul zaujímá buď lineární, nebo rozvětvené strukturální uspořádání. Důkladně byl porovnán vliv použité sady akceptorních jednotek na elektronické chování chromoforů.	push-pull chromofory, piperidin, thiofen, (ne)lineární optickě vlastnosti
eng	Electron withdrawing properties of malonic acid derivatives: a comparative study.	Organic molecules having push-pull arrangement are frequently used in many branches of optoelectronics and telecommunication devices. Their unique D--A structural arrangement results in peculiar properties that can further be utilized in (non)linear optics, fluorescence, semiconducting and photovoltaic devices (OLEDs, OFETs, DSSC, etc.). D-A interaction of the electron donor and acceptor moieties through a -conjugated system, so-called intramolecular charge transfer (ICT), accounts for the formation of new, low-energy molecular orbital with facile HOMO-LUMO excitation in the UV/Vis area. Hence, in push-pull molecules, the ICT is primarily responsible for the color and further (non)linear optical properties. In view of the popularity and wide use of electron withdrawing groups based on malonic acid such as dicyanovinyl and (thio)barbituric acid, we have synthesized a large family of model push-pull molecules 1 (linear) and 2 (branched) bearing 2-(piperidin-1-yl)thiophene (PIT) donor and various acceptor moieties based on malonic acid. In overall, 32 derivatives were synthesized and the electronic behaviors of the appended acceptors were critically compared.	push-pull chromophores, piperidine, thiophene, (non)linear optical properties