Chemical Changes and Photoluminescence Properties of UV Modified Polypyrrole

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10132707" target="_blank" >RIV/00216208:11320/13:10132707 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/13:00423720

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Chemical Changes and Photoluminescence Properties of UV Modified Polypyrrole

Original language description

Effects of ultraviolet light (325 nm) irradiation on polypyrrole (PPy) properties were studied by time-resolved, standard photoluminescence (PL), optical absorption, and X-ray photoelectron (XPS) spectroscopies. PPy samples were prepared in thin films ongold, quartz, and H-terminated monocrystalline diamond (MCD) substrates by electrochemical and chemical oxidation. After the UV irradiation, all PPy samples converged to the same PL spectrum independent of initial preparation methods or substrates. We observed formation of a new, highly intensive PL band at 540 nm accompanied with few per cent increase in transmittance and structural and chemical changes of the PPy chains. The changes occurred only when the light intensity was from 0.1 to 10 W/cm2. Theeffect was reduced in vacuum. Thermal annealing had no influence. We explain the effect by chemical and structural modifications of PPy that lead to a permanent increase in quantum yield of intrachain exciton recombination.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BH - Optics, masers and lasers

OECD FORD branch

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Project

<a href="/en/project/GBP108%2F12%2FG108" target="_blank" >GBP108/12/G108: Preparation, modification and characterization of materials by radiation</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2013

Confidentiality

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

Name of the periodical

International Journal of Electrochemical Science

ISSN

1452-3981

e-ISSN

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Volume of the periodical

8

Issue of the periodical within the volume

1

Country of publishing house

RS - THE REPUBLIC OF SERBIA

Number of pages

14

Pages from-to

57-70

UT code for WoS article

000316562800005

EID of the result in the Scopus database

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