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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10401 - Organic chemistry

Project

—

Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2018

Confidentiality

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

Name of the periodical

Journal of Luminescence

ISSN

00222313

e-ISSN

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Volume of the periodical

203

Issue of the periodical within the volume

1

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

447-454

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85049421697