Two Thin Film Polymorphs of the Singlet Fission Compound 1,3-Diphenylisobenzofuran

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F14%3A00429925" target="_blank" >RIV/61388963:_____/14:00429925 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/jp502122d" target="_blank" >http://dx.doi.org/10.1021/jp502122d</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/jp502122d" target="_blank" >10.1021/jp502122d</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Two Thin Film Polymorphs of the Singlet Fission Compound 1,3-Diphenylisobenzofuran

Popis výsledku v původním jazyce

Polycrystalline thin films of 1,3-diphenylisobenzofuran (1) with a morphology referred to here as alpha exhibit highly efficient singlet fission, producing two triplet states for every absorbed photon at 77 K, and about 1.4 triplet states per absorbed photon at room temperature. However, the triplet yield depends strongly on the specific crystalline form of 1, and for the morphology referred to as beta the triplet yields are roughly an order of magnitude smaller. In this study, alpha, beta, and mixed alpha/beta films of 1 are prepared by thermal evaporation and solution drop-casting, and the structural and photophysical differences that may account for the very different triplet quantum yields are explored. The crystallites of 1 in thin films have beenidentified with two bulk crystal polymorphs grown from solution and structurally characterized. Analysis of absorption spectra of the films reveals a 600 cm(-1) blue shift in the onset and a unique spectral profile for the form alpha cry

Název v anglickém jazyce

Two Thin Film Polymorphs of the Singlet Fission Compound 1,3-Diphenylisobenzofuran

Popis výsledku anglicky

Polycrystalline thin films of 1,3-diphenylisobenzofuran (1) with a morphology referred to here as alpha exhibit highly efficient singlet fission, producing two triplet states for every absorbed photon at 77 K, and about 1.4 triplet states per absorbed photon at room temperature. However, the triplet yield depends strongly on the specific crystalline form of 1, and for the morphology referred to as beta the triplet yields are roughly an order of magnitude smaller. In this study, alpha, beta, and mixed alpha/beta films of 1 are prepared by thermal evaporation and solution drop-casting, and the structural and photophysical differences that may account for the very different triplet quantum yields are explored. The crystallites of 1 in thin films have beenidentified with two bulk crystal polymorphs grown from solution and structurally characterized. Analysis of absorption spectra of the films reveals a 600 cm(-1) blue shift in the onset and a unique spectral profile for the form alpha cry

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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

—

Svazek periodika

118

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

12121-12132

Kód UT WoS článku

000337497400006

EID výsledku v databázi Scopus

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