Sublimation not an innocent technique: A case of bis-cyclometalated iridium emitter for OLED

Etienne Baranoff; Stéphane Suàrez; Philippe Bugnon; Claudia Barolo; Roberto Buscaino; Rosario Scopelliti; Libero Zuppiroli; Michael Graetzel; Md K. Nazeeruddin; Etienne Baranoff

doi:10.1021/ic800747t

Sublimation not an innocent technique: A case of bis-cyclometalated iridium emitter for OLED

Etienne Baranoff, Stéphane Suàrez, Philippe Bugnon, Claudia Barolo, Roberto Buscaino, Rosario Scopelliti, Libero Zuppiroli, Michael Graetzel, Md K. Nazeeruddin, Etienne Baranoff

Chemistry

Research output: Contribution to journal › Article › peer-review

72 Citations (Scopus)

Abstract

Isomerization of a neutral bis-cyclometalated iridium(III) complex has been observed for the first time during the preparation of vacuum-processed organic light-emitting devices (OLEDs) and reproduced in solution. Isolation of the isomer revealed a cis organization of the two pyridine rings of the cyclometalating ligands. Photophysical studies show very similar emission properties of the two isomers. However, due to in situ isomerization, it is only possible to prepare vacuum-processed OLED devices having a mixture of isomers.

Original language	English
Pages (from-to)	6575-6577
Number of pages	3
Journal	Inorganic Chemistry
Volume	47
Issue number	15
DOIs	https://doi.org/10.1021/ic800747t
Publication status	Published - 4 Aug 2008

ASJC Scopus subject areas

Inorganic Chemistry

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title = "Sublimation not an innocent technique: A case of bis-cyclometalated iridium emitter for OLED",

abstract = "Isomerization of a neutral bis-cyclometalated iridium(III) complex has been observed for the first time during the preparation of vacuum-processed organic light-emitting devices (OLEDs) and reproduced in solution. Isolation of the isomer revealed a cis organization of the two pyridine rings of the cyclometalating ligands. Photophysical studies show very similar emission properties of the two isomers. However, due to in situ isomerization, it is only possible to prepare vacuum-processed OLED devices having a mixture of isomers.",

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T1 - Sublimation not an innocent technique

T2 - A case of bis-cyclometalated iridium emitter for OLED

AU - Baranoff, Etienne

AU - Suàrez, Stéphane

AU - Bugnon, Philippe

AU - Barolo, Claudia

AU - Buscaino, Roberto

AU - Scopelliti, Rosario

AU - Zuppiroli, Libero

AU - Graetzel, Michael

AU - Nazeeruddin, Md K.

AU - Baranoff, Etienne

PY - 2008/8/4

Y1 - 2008/8/4

N2 - Isomerization of a neutral bis-cyclometalated iridium(III) complex has been observed for the first time during the preparation of vacuum-processed organic light-emitting devices (OLEDs) and reproduced in solution. Isolation of the isomer revealed a cis organization of the two pyridine rings of the cyclometalating ligands. Photophysical studies show very similar emission properties of the two isomers. However, due to in situ isomerization, it is only possible to prepare vacuum-processed OLED devices having a mixture of isomers.

AB - Isomerization of a neutral bis-cyclometalated iridium(III) complex has been observed for the first time during the preparation of vacuum-processed organic light-emitting devices (OLEDs) and reproduced in solution. Isolation of the isomer revealed a cis organization of the two pyridine rings of the cyclometalating ligands. Photophysical studies show very similar emission properties of the two isomers. However, due to in situ isomerization, it is only possible to prepare vacuum-processed OLED devices having a mixture of isomers.

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U2 - 10.1021/ic800747t

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SP - 6575

EP - 6577

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 15

ER -

Sublimation not an innocent technique: A case of bis-cyclometalated iridium emitter for OLED

Abstract

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