Spiro-functionalized ligand with supramolecular steric hindrance to control π-π interaction in the iridium complex for high-performance electrophosphorescent devices

Ling Hai Xie; Rui Zhu; Yan Qian; Ran Ran Liu; Shu Fen Chen; Jian Lin; Wei Huang

doi:10.1021/jz900105v

Spiro-functionalized ligand with supramolecular steric hindrance to control π-π interaction in the iridium complex for high-performance electrophosphorescent devices

Ling Hai Xie, Rui Zhu, Yan Qian, Ran Ran Liu, Shu Fen Chen, Jian Lin, Wei Huang

Nanjing University of Posts and Telecommunications

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

56 Scopus citations

Abstract

Supramolecular steric hindrance (SSH) originates from the combination of the sterichindrance effect of rigid and bulky three-dimensional (3D) moieties with a weak supramolecular interaction. Orthogonally bulky spirobifluorene as a π-π stacking SSH model was incorporated into a homoleptic Ir complex. Ir(SFP)₃ with SSH exhibits impressive higher quantum yields and spectral stability than that of its alkyl-substituted counterpart Ir(BFP)₃. The lower turn-on voltage and higher optimized dopant concentration for Ir(SFP)₃ were observed in the proof-in-concept phosphorescent organic light-emitting diodes (PHOLEDs) exhibiting a higher maximum brightness (L_max) of 35481 cd·m^-2, η_L of 44.3 cd·A^-1, and η_P of 34.8 lm·W^-1. The probable supramolecular architectures of dopant-dopant and host-guest interactions were proposed on the basis of molecular modeling.

Original language	English
Pages (from-to)	272-276
Number of pages	5
Journal	Journal of Physical Chemistry Letters
Volume	1
Issue number	1
DOIs	https://doi.org/10.1021/jz900105v
State	Published - Jan 2010
Externally published	Yes

Keywords

Macromolecules
Soft matter

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10.1021/jz900105v

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title = "Spiro-functionalized ligand with supramolecular steric hindrance to control π-π interaction in the iridium complex for high-performance electrophosphorescent devices",

abstract = "Supramolecular steric hindrance (SSH) originates from the combination of the sterichindrance effect of rigid and bulky three-dimensional (3D) moieties with a weak supramolecular interaction. Orthogonally bulky spirobifluorene as a π-π stacking SSH model was incorporated into a homoleptic Ir complex. Ir(SFP)3 with SSH exhibits impressive higher quantum yields and spectral stability than that of its alkyl-substituted counterpart Ir(BFP)3. The lower turn-on voltage and higher optimized dopant concentration for Ir(SFP)3 were observed in the proof-in-concept phosphorescent organic light-emitting diodes (PHOLEDs) exhibiting a higher maximum brightness (Lmax) of 35481 cd·m-2, ηL of 44.3 cd·A-1, and ηP of 34.8 lm·W-1. The probable supramolecular architectures of dopant-dopant and host-guest interactions were proposed on the basis of molecular modeling.",

keywords = "Macromolecules, Soft matter",

author = "Xie, {Ling Hai} and Rui Zhu and Yan Qian and Liu, {Ran Ran} and Chen, {Shu Fen} and Jian Lin and Wei Huang",

year = "2010",

month = jan,

doi = "10.1021/jz900105v",

language = "英语",

volume = "1",

pages = "272--276",

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T1 - Spiro-functionalized ligand with supramolecular steric hindrance to control π-π interaction in the iridium complex for high-performance electrophosphorescent devices

AU - Xie, Ling Hai

AU - Zhu, Rui

AU - Qian, Yan

AU - Liu, Ran Ran

AU - Chen, Shu Fen

AU - Lin, Jian

AU - Huang, Wei

PY - 2010/1

Y1 - 2010/1

N2 - Supramolecular steric hindrance (SSH) originates from the combination of the sterichindrance effect of rigid and bulky three-dimensional (3D) moieties with a weak supramolecular interaction. Orthogonally bulky spirobifluorene as a π-π stacking SSH model was incorporated into a homoleptic Ir complex. Ir(SFP)3 with SSH exhibits impressive higher quantum yields and spectral stability than that of its alkyl-substituted counterpart Ir(BFP)3. The lower turn-on voltage and higher optimized dopant concentration for Ir(SFP)3 were observed in the proof-in-concept phosphorescent organic light-emitting diodes (PHOLEDs) exhibiting a higher maximum brightness (Lmax) of 35481 cd·m-2, ηL of 44.3 cd·A-1, and ηP of 34.8 lm·W-1. The probable supramolecular architectures of dopant-dopant and host-guest interactions were proposed on the basis of molecular modeling.

AB - Supramolecular steric hindrance (SSH) originates from the combination of the sterichindrance effect of rigid and bulky three-dimensional (3D) moieties with a weak supramolecular interaction. Orthogonally bulky spirobifluorene as a π-π stacking SSH model was incorporated into a homoleptic Ir complex. Ir(SFP)3 with SSH exhibits impressive higher quantum yields and spectral stability than that of its alkyl-substituted counterpart Ir(BFP)3. The lower turn-on voltage and higher optimized dopant concentration for Ir(SFP)3 were observed in the proof-in-concept phosphorescent organic light-emitting diodes (PHOLEDs) exhibiting a higher maximum brightness (Lmax) of 35481 cd·m-2, ηL of 44.3 cd·A-1, and ηP of 34.8 lm·W-1. The probable supramolecular architectures of dopant-dopant and host-guest interactions were proposed on the basis of molecular modeling.

KW - Macromolecules

KW - Soft matter

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DO - 10.1021/jz900105v

M3 - 文章

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JF - Journal of Physical Chemistry Letters

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ER -

Spiro-functionalized ligand with supramolecular steric hindrance to control π-π interaction in the iridium complex for high-performance electrophosphorescent devices

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Keywords

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