Impact of alkoxy side chains on morphology and excitonic coupling in PPE-PPV copolymer thin films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F18%3AN0000063" target="_blank" >RIV/00177016:_____/18:N0000063 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jlumin.2018.06.084" target="_blank" >http://dx.doi.org/10.1016/j.jlumin.2018.06.084</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jlumin.2018.06.084" target="_blank" >10.1016/j.jlumin.2018.06.084</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of alkoxy side chains on morphology and excitonic coupling in PPE-PPV copolymer thin films

Popis výsledku v původním jazyce

We investigate the role of the alkoxy side chains, of a series of five poly (p-phenyleneethylene)-alt-poly (p-phenylene-vinylene)s (PPE-PPVs) polymers as thin films, on the photophysics properties and the type of electronic coupling. By steady-state and time-resolved photoluminescence (PL) spectroscopy, we identify the different emissive species in all PPE-PPVs thin films. We show that the polymers with symmetrical and partial dissymmetrical side chains present emission from unaggregated and aggregated chain segments, while the polymer with total dissymmetrical side chains presents emission from aggregated chain segments. Excimer emission is also observed in the polymer with symmetrical long alkoxy side chains grafted on the PPE section. Here, we identify the types of electronic coupling in these different emissive species. Implementing Franck-Condon (FC) analysis, we analyze the PL spectra and we show that there is a Förster energy transfer between unaggregated and aggregated chain segments. We show that the polymer with symmetrical long alkoxy side chains grafted on the PPE section is characterized by a high energy transfer from unaggregated chain segments to aggregated chain segments.

Název v anglickém jazyce

Impact of alkoxy side chains on morphology and excitonic coupling in PPE-PPV copolymer thin films

Popis výsledku anglicky

We investigate the role of the alkoxy side chains, of a series of five poly (p-phenyleneethylene)-alt-poly (p-phenylene-vinylene)s (PPE-PPVs) polymers as thin films, on the photophysics properties and the type of electronic coupling. By steady-state and time-resolved photoluminescence (PL) spectroscopy, we identify the different emissive species in all PPE-PPVs thin films. We show that the polymers with symmetrical and partial dissymmetrical side chains present emission from unaggregated and aggregated chain segments, while the polymer with total dissymmetrical side chains presents emission from aggregated chain segments. Excimer emission is also observed in the polymer with symmetrical long alkoxy side chains grafted on the PPE section. Here, we identify the types of electronic coupling in these different emissive species. Implementing Franck-Condon (FC) analysis, we analyze the PL spectra and we show that there is a Förster energy transfer between unaggregated and aggregated chain segments. We show that the polymer with symmetrical long alkoxy side chains grafted on the PPE section is characterized by a high energy transfer from unaggregated chain segments to aggregated chain segments.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10401 - Organic chemistry

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of Luminescence

ISSN

00222313

e-ISSN

—

Svazek periodika

203

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

447-454

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85049421697