Influencing the optoelectronic properties of a heteroleptic iridium complex by second-sphere H-bonding interactions

Barbora Balónová; Diego Rota Martir; Ewan Clark; Helena Shepherd; Eli Zysman-Colman; Barry Blight

doi:10.1021/acs.inorgchem.8b01326

Influencing the optoelectronic properties of a heteroleptic iridium complex by second-sphere H-bonding interactions

Barbora Balónová, Diego Rota Martir, Ewan Clark, Helena Shepherd, Eli Zysman-Colman, Barry Blight

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

Abstract

The use of a new second-sphere coordination methodology for emission color tuning of iridium complexes is presented. We demonstrate that a complimentary H-bonding guest molecule binding through contiguous triple H-bonding interactions can induce a shift in the emission of the iridium complex from green to blue without the need to alter the ligand structure around the metal centre, while simultaneously increasing the photoluminescence quantum yield in solution. The association constant for this host-guest interaction was determined to be K_a = 4.3 x 10³ M^-1 in a solution of 2% dimethylsulfoxide in chloroform by UV-Vis titration analysis and the impact of the hydrogen bonding interaction further probed by photoluminescence, electrochemical, and computational methods. Our findings suggest that directed self-assemblies are an effective approach to influencing emission properties of phosphorescent iridium (III) complexes.

Original language	English
Journal	Inorganic Chemistry
Volume	In press
Early online date	3 Jul 2018
DOIs	https://doi.org/10.1021/acs.inorgchem.8b01326
Publication status	E-pub ahead of print - 3 Jul 2018

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10.1021/acs.inorgchem.8b01326

BBlight-PrePrint-FullPaper-Feb-2018
Copyright © 2018 American Chemical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1021/acs.inorgchem.8b01326
Accepted author manuscript, 1.52 MB

Blue-Emitting Phospors: Blue-emitting Phosphors for Solid State Lighting Applications
Zysman-Colman, E. (PI)
EPSRC
1/06/15 → 30/09/19
Project: Standard

Influencing the Optoelectronic Properties of a Heteroleptic Iridium Complex by Second-Sphere H-Bonding Interactions (dataset)
Balónová, B. (Creator), Rota Martir, D. (Creator), Clark, E. R. (Creator), Shepherd, H. J. (Creator), Zysman-Colman, E. (Creator) & Blight, B. A. (Creator), Dataverse, 20 Jun 2018
DOI: 10.25545/YB60PU
Dataset
Influencing the Optoelectronic Properties of a Heteroleptic Iridium Complex by Second-Sphere H-Bonding Interactions (dataset 2)
Balónová, B. (Creator), Rota Martir, D. (Creator), Clark, E. R. (Creator), Shepherd, H. J. (Creator), Zysman-Colman, E. (Creator) & Blight, B. A. (Creator), Cambridge Crystallographic Data Centre, 2018
https://dx.doi.org/10.5517/ccdc.csd.cc1z5kc2
Dataset

Cite this

@article{332386484bee4ac9a48a79d60c3bdc85,

title = "Influencing the optoelectronic properties of a heteroleptic iridium complex by second-sphere H-bonding interactions",

abstract = "The use of a new second-sphere coordination methodology for emission color tuning of iridium complexes is presented. We demonstrate that a complimentary H-bonding guest molecule binding through contiguous triple H-bonding interactions can induce a shift in the emission of the iridium complex from green to blue without the need to alter the ligand structure around the metal centre, while simultaneously increasing the photoluminescence quantum yield in solution. The association constant for this host-guest interaction was determined to be Ka = 4.3 x 103 M-1 in a solution of 2% dimethylsulfoxide in chloroform by UV-Vis titration analysis and the impact of the hydrogen bonding interaction further probed by photoluminescence, electrochemical, and computational methods. Our findings suggest that directed self-assemblies are an effective approach to influencing emission properties of phosphorescent iridium (III) complexes.",

author = "Barbora Bal{\'o}nov{\'a} and {Rota Martir}, Diego and Ewan Clark and Helena Shepherd and Eli Zysman-Colman and Barry Blight",

note = "BAB is grateful for financial support from University of Kent, University of New Brunswick and New Brunswick Foundation for Innovation. EZ-C thanks the University of St Andrews and EPSRC (EP/M02105X/1) for financial support.",

year = "2018",

month = jul,

day = "3",

doi = "10.1021/acs.inorgchem.8b01326",

language = "English",

volume = "In press",

journal = "Inorganic Chemistry",

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TY - JOUR

T1 - Influencing the optoelectronic properties of a heteroleptic iridium complex by second-sphere H-bonding interactions

AU - Balónová, Barbora

AU - Rota Martir, Diego

AU - Clark, Ewan

AU - Shepherd, Helena

AU - Zysman-Colman, Eli

AU - Blight, Barry

N1 - BAB is grateful for financial support from University of Kent, University of New Brunswick and New Brunswick Foundation for Innovation. EZ-C thanks the University of St Andrews and EPSRC (EP/M02105X/1) for financial support.

PY - 2018/7/3

Y1 - 2018/7/3

N2 - The use of a new second-sphere coordination methodology for emission color tuning of iridium complexes is presented. We demonstrate that a complimentary H-bonding guest molecule binding through contiguous triple H-bonding interactions can induce a shift in the emission of the iridium complex from green to blue without the need to alter the ligand structure around the metal centre, while simultaneously increasing the photoluminescence quantum yield in solution. The association constant for this host-guest interaction was determined to be Ka = 4.3 x 103 M-1 in a solution of 2% dimethylsulfoxide in chloroform by UV-Vis titration analysis and the impact of the hydrogen bonding interaction further probed by photoluminescence, electrochemical, and computational methods. Our findings suggest that directed self-assemblies are an effective approach to influencing emission properties of phosphorescent iridium (III) complexes.

AB - The use of a new second-sphere coordination methodology for emission color tuning of iridium complexes is presented. We demonstrate that a complimentary H-bonding guest molecule binding through contiguous triple H-bonding interactions can induce a shift in the emission of the iridium complex from green to blue without the need to alter the ligand structure around the metal centre, while simultaneously increasing the photoluminescence quantum yield in solution. The association constant for this host-guest interaction was determined to be Ka = 4.3 x 103 M-1 in a solution of 2% dimethylsulfoxide in chloroform by UV-Vis titration analysis and the impact of the hydrogen bonding interaction further probed by photoluminescence, electrochemical, and computational methods. Our findings suggest that directed self-assemblies are an effective approach to influencing emission properties of phosphorescent iridium (III) complexes.

U2 - 10.1021/acs.inorgchem.8b01326

DO - 10.1021/acs.inorgchem.8b01326

M3 - Article

SN - 0020-1669

VL - In press

JO - Inorganic Chemistry

JF - Inorganic Chemistry

ER -

Influencing the optoelectronic properties of a heteroleptic iridium complex by second-sphere H-bonding interactions

Abstract

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Projects

Blue-Emitting Phospors: Blue-emitting Phosphors for Solid State Lighting Applications

Datasets

Influencing the Optoelectronic Properties of a Heteroleptic Iridium Complex by Second-Sphere H-Bonding Interactions (dataset)

Influencing the Optoelectronic Properties of a Heteroleptic Iridium Complex by Second-Sphere H-Bonding Interactions (dataset 2)

Cite this