Photophysical properties of CdSe quantum dot self-assemblies with zinc phthalocyanines and azaphthalocyanines

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F13%3A00392059" target="_blank" >RIV/61388955:_____/13:00392059 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/13:00392059 RIV/00216208:11160/13:10144201 RIV/61989100:27200/13:86086012

Výsledek na webu

<a href="http://dx.doi.org/10.1039/C2PP25348H" target="_blank" >http://dx.doi.org/10.1039/C2PP25348H</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/C2PP25348H" target="_blank" >10.1039/C2PP25348H</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photophysical properties of CdSe quantum dot self-assemblies with zinc phthalocyanines and azaphthalocyanines

Popis výsledku v původním jazyce

The formation of self-assemblies between CdSe quantum dots (QDs) and Zn phthalocyanines (Pc) and azaphthalocyanines (AzaPc) bearing alkylsulfanyl substituents and the photophysical properties of these assemblies were studied using both steady-state and time-resolved luminescence/absorption spectroscopy. The formation of the self-assemblies was accompanied by a blue shift of the Q band of the dyes and by a quenching of the CdSe QDs luminescence. The largest spectral shift of the Q-band was approximately7 nm and was observed for pentan-3-ylsulfanyl-functionalised phthalocyanine (3). Assuming a 1 : 1 stoichiometry, the calculated binding constant was 4 104 M1. Pc substituted with the bulky tert-butylsulfanyl groups (1) exhibited a smaller shift of the Qband. The quenching of the CdSe QDs luminescence by 1 was more effective than that observed for 3. The results indicated that the luminescence quenching may be due to a photoinduced charge transfer between 1 or 3 and the CdSe QDs. In cont

Název v anglickém jazyce

Photophysical properties of CdSe quantum dot self-assemblies with zinc phthalocyanines and azaphthalocyanines

Popis výsledku anglicky

The formation of self-assemblies between CdSe quantum dots (QDs) and Zn phthalocyanines (Pc) and azaphthalocyanines (AzaPc) bearing alkylsulfanyl substituents and the photophysical properties of these assemblies were studied using both steady-state and time-resolved luminescence/absorption spectroscopy. The formation of the self-assemblies was accompanied by a blue shift of the Q band of the dyes and by a quenching of the CdSe QDs luminescence. The largest spectral shift of the Q-band was approximately7 nm and was observed for pentan-3-ylsulfanyl-functionalised phthalocyanine (3). Assuming a 1 : 1 stoichiometry, the calculated binding constant was 4 104 M1. Pc substituted with the bulky tert-butylsulfanyl groups (1) exhibited a smaller shift of the Qband. The quenching of the CdSe QDs luminescence by 1 was more effective than that observed for 3. The results indicated that the luminescence quenching may be due to a photoinduced charge transfer between 1 or 3 and the CdSe QDs. In cont

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP208%2F10%2F1678" target="_blank" >GAP208/10/1678: Fotofyzika a fotochemie samoorganizovaných nanostruktur</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Photochemical & Photobiological Sciences

ISSN

1474-905X

e-ISSN

—

Svazek periodika

12

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

8

Strana od-do

743-750

Kód UT WoS článku

000318027200005

EID výsledku v databázi Scopus

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