Spectroelectrochemical analysis of electrochromic materials
Aplikace | 2023 | MetrohmInstrumentace
V poslednich letech se samoopravne vodive polimery staly klicovym materialem v oblasti senzoriky antistatickych povlaku a elektrochromie zejmena pro smart okna. Nastavitelne opticke a elektricke vlastnosti umoznuji presne rizeni propustnosti svetla a sledovani oxidacnich stavu.
Studie se zameruje na analizu tenkych filmu PEDOT metodami Ramanove a UV Vis spektroelectrochemie. Cilem je ziskat detailni informace o oxidacnim stavu polymeru a prozkoumat jeho elektrochromni chovani prubehem potencialovych cyklu.
Rozsirit metodiku na nove vodive polimery a nanomaterialy. Integrace do miniaturizovanych systemu a online monitoring. Vyuzit strojove ucení pro analyzu komplexnich dat. Realne casove sledovani degradace a funkce povlaku.
Spektroelectrochemie se ukazuje jako efektivni a flexibilni nastroj pro charakterizaci elektrochromnich materialu Metody Ramanove i UV Vis doplnuji elektrochemicke pristupy a nabizi uceleny pohled na oxidacni stavy a opticke vlastnosti PEDOT filmu
1. Feng ZQ Wu J Cho W et al Highly Aligned Poly(3 4 Ethylenedioxythiophene) PEDOT Nano a Microscale Fibers and Tubes Polymer 2013 54 702 708
2. Garreau S Louarn G Froyer G et al Spectroelectrochemical Studies of the C14 Alkyl Derivative of Poly(3 4 Ethylenedioxythiophene) PEDT Electrochimica Acta 2001 46 1207 1214
3. Tran Van F Garreau S Louarn G et al Fully Undoped and Soluble Oligo(3 4 Ethylenedioxythiophene)s Spectroscopic Study and Electrochemical Characterization Journal of Materials Chemistry 2001 11 1378 1382
Elektrochemie
ZaměřeníPrůmysl a chemie, Materiálová analýza
VýrobceMetrohm
Souhrn
Význam tématu
V poslednich letech se samoopravne vodive polimery staly klicovym materialem v oblasti senzoriky antistatickych povlaku a elektrochromie zejmena pro smart okna. Nastavitelne opticke a elektricke vlastnosti umoznuji presne rizeni propustnosti svetla a sledovani oxidacnich stavu.
Cile a prehled studie
Studie se zameruje na analizu tenkych filmu PEDOT metodami Ramanove a UV Vis spektroelectrochemie. Cilem je ziskat detailni informace o oxidacnim stavu polymeru a prozkoumat jeho elektrochromni chovani prubehem potencialovych cyklu.
Pouzita metodika a instrumentace
- Ramanova spektroelectrochemie na pristroji SPELEC RAMAN s laserem 785 nm a Raman sondou pro screen printed elektrody
- UV Vis spektroelectrochemie na pristroji SPELEC v odbici s reflecnim probe a reflexnimi celami pro tisknute elektrody
- Pozlatene gold SPE 220AT modifikovane filmy PEDOT v 0.1 mol L roztoku LiClO4
- Software DropView SPELEC pro synchronizaci elektrochemickych a spektroskopickych dat
Hlavni vysledky a diskuse
- Ramanova spektra neutralniho a p dopovaneho PEDOT ukazala posun vibracnich mod v oblasti 1100 az 1600 cm-1 a objev inter-ringoveho rezonu pri 1293 cm-1 jen v dopovane forme
- UV Vis spektroelectrochemie odhalila absorpcni pasmo pri 525 nm: v dopovane forme polymer bezbarvy a v neutralni forme zbarveny
- Cyclic voltametrie neprokázala zrejme elektrochemicke vrcholy zmeny oxidacniho stavu, ale soubezne mereni absorbance potvrdilo stabilni a reverzni chovani filmu pres dva cykly
- Derivative voltabsorptogram (dAbs/dt vs potencial) jasne dokumentuje dopovani a dedopovani polymeru
Prinose a prakticke vyuziti metody
- Multiodpovidajici pristup poskytuje soubezne elektrochemicke a opticke informace
- Umoznuje presne urceni oxidacniho stavu polymeru a sledovani stability povlaku
- Vhodne pro vyvoj elektrochromnich zarizeni jako smart okna, senzory ci aplikace QA QC
Budouci trendy a moznosti vyuziti
Rozsirit metodiku na nove vodive polimery a nanomaterialy. Integrace do miniaturizovanych systemu a online monitoring. Vyuzit strojove ucení pro analyzu komplexnich dat. Realne casove sledovani degradace a funkce povlaku.
Zaver
Spektroelectrochemie se ukazuje jako efektivni a flexibilni nastroj pro charakterizaci elektrochromnich materialu Metody Ramanove i UV Vis doplnuji elektrochemicke pristupy a nabizi uceleny pohled na oxidacni stavy a opticke vlastnosti PEDOT filmu
Reference
1. Feng ZQ Wu J Cho W et al Highly Aligned Poly(3 4 Ethylenedioxythiophene) PEDOT Nano a Microscale Fibers and Tubes Polymer 2013 54 702 708
2. Garreau S Louarn G Froyer G et al Spectroelectrochemical Studies of the C14 Alkyl Derivative of Poly(3 4 Ethylenedioxythiophene) PEDT Electrochimica Acta 2001 46 1207 1214
3. Tran Van F Garreau S Louarn G et al Fully Undoped and Soluble Oligo(3 4 Ethylenedioxythiophene)s Spectroscopic Study and Electrochemical Characterization Journal of Materials Chemistry 2001 11 1378 1382
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