Blue-green emissive cationic iridium(III) complexes using partially saturated strongly-donating guanidyl-pyridine/pyrazine ancillary ligands

Kamrul  Hasan; Amlan Kumar Pal; Thomas  Auvray; Eli Zysman-Colman; Garry S.  Hanan

doi:10.1039/C5CC04069H

Blue-green emissive cationic iridium(III) complexes using partially saturated strongly-donating guanidyl-pyridine/pyrazine ancillary ligands

Kamrul Hasan , Amlan Kumar Pal, Thomas Auvray, Eli Zysman-Colman, Garry S. Hanan

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

Abstract

A new class of cationic iridium(III) complexes of the form [(C^N)₂Ir(N^N)][PF₆] is reported, where C^N = cyclometallating 2-phenylpyridinato, ppy, or 2-(2,4-difluorophenyl)-5′-methylpyridinato, dFMeppy, and N^N = guanidyl-pyridine, gpy, or pyrazine, gpz, as the ancillary ligand. A large blue-shift in the emission coupled with a 7-to-9 fold enhancement in photoluminescence quantum yield and microsecond emission lifetimes were observed for the complexes containing the partially saturated gpy ligand as compared to the benchmark complex [(ppy)₂Ir(bpy)][PF₆], C1, where bpy is 2,2′-bipyridine.

Original language	English
Pages (from-to)	14060-14063
Journal	Chemical Communications
Volume	51
Issue number	74
Early online date	31 Jul 2015
DOIs	https://doi.org/10.1039/C5CC04069H
Publication status	Published - 25 Sept 2015

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Colman_2015_ChemComm_BlueGreen_CC
Copyright 2015 the Authors. This Open Access Article is licensed under a Creative Commons Attribution 3.0 Unported Licence (http://creativecommons.org/licenses/by/3.0/)
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@article{4561461e066e43348457e96182b75d32,

title = "Blue-green emissive cationic iridium(III) complexes using partially saturated strongly-donating guanidyl-pyridine/pyrazine ancillary ligands",

abstract = "A new class of cationic iridium(III) complexes of the form [(C^N)2Ir(N^N)][PF6] is reported, where C^N = cyclometallating 2-phenylpyridinato, ppy, or 2-(2,4-difluorophenyl)-5′-methylpyridinato, dFMeppy, and N^N = guanidyl-pyridine, gpy, or pyrazine, gpz, as the ancillary ligand. A large blue-shift in the emission coupled with a 7-to-9 fold enhancement in photoluminescence quantum yield and microsecond emission lifetimes were observed for the complexes containing the partially saturated gpy ligand as compared to the benchmark complex [(ppy)2Ir(bpy)][PF6], C1, where bpy is 2,2′-bipyridine.",

author = "Kamrul Hasan and Pal, {Amlan Kumar} and Thomas Auvray and Eli Zysman-Colman and Hanan, {Garry S.}",

note = "The authors are grateful to the Natural Sciences and Engineering Research Council (NSERC) of Canada, le Fonds qu{\'e}b{\'e}cois de la recherche sur la nature et les technologies (FRQNT), the Centre for Self Assembled Chemical Structures (CSACS), the Centre in Green Chemistry and Catalysis (CCVC), and the Universit{\'e} de Montr{\'e}al (UdeM) for financial support. EZ-C acknowledges the University of St Andrews for financial support. ",

year = "2015",

month = sep,

day = "25",

doi = "10.1039/C5CC04069H",

language = "English",

volume = "51",

pages = "14060--14063",

journal = "Chemical Communications",

issn = "1359-7345",

publisher = "Royal Society of Chemistry",

number = "74",

}

TY - JOUR

T1 - Blue-green emissive cationic iridium(III) complexes using partially saturated strongly-donating guanidyl-pyridine/pyrazine ancillary ligands

AU - Hasan , Kamrul

AU - Pal, Amlan Kumar

AU - Auvray, Thomas

AU - Zysman-Colman, Eli

AU - Hanan, Garry S.

N1 - The authors are grateful to the Natural Sciences and Engineering Research Council (NSERC) of Canada, le Fonds québécois de la recherche sur la nature et les technologies (FRQNT), the Centre for Self Assembled Chemical Structures (CSACS), the Centre in Green Chemistry and Catalysis (CCVC), and the Université de Montréal (UdeM) for financial support. EZ-C acknowledges the University of St Andrews for financial support.

PY - 2015/9/25

Y1 - 2015/9/25

N2 - A new class of cationic iridium(III) complexes of the form [(C^N)2Ir(N^N)][PF6] is reported, where C^N = cyclometallating 2-phenylpyridinato, ppy, or 2-(2,4-difluorophenyl)-5′-methylpyridinato, dFMeppy, and N^N = guanidyl-pyridine, gpy, or pyrazine, gpz, as the ancillary ligand. A large blue-shift in the emission coupled with a 7-to-9 fold enhancement in photoluminescence quantum yield and microsecond emission lifetimes were observed for the complexes containing the partially saturated gpy ligand as compared to the benchmark complex [(ppy)2Ir(bpy)][PF6], C1, where bpy is 2,2′-bipyridine.

AB - A new class of cationic iridium(III) complexes of the form [(C^N)2Ir(N^N)][PF6] is reported, where C^N = cyclometallating 2-phenylpyridinato, ppy, or 2-(2,4-difluorophenyl)-5′-methylpyridinato, dFMeppy, and N^N = guanidyl-pyridine, gpy, or pyrazine, gpz, as the ancillary ligand. A large blue-shift in the emission coupled with a 7-to-9 fold enhancement in photoluminescence quantum yield and microsecond emission lifetimes were observed for the complexes containing the partially saturated gpy ligand as compared to the benchmark complex [(ppy)2Ir(bpy)][PF6], C1, where bpy is 2,2′-bipyridine.

UR - http://www.rsc.org/suppdata/c5/cc/c5cc04069h/c5cc04069h1.pdf

UR - http://www.rsc.org/suppdata/c5/cc/c5cc04069h/c5cc04069h2.cif

U2 - 10.1039/C5CC04069H

DO - 10.1039/C5CC04069H

M3 - Article

SN - 1359-7345

VL - 51

SP - 14060

EP - 14063

JO - Chemical Communications

JF - Chemical Communications

IS - 74

ER -

Blue-green emissive cationic iridium(III) complexes using partially saturated strongly-donating guanidyl-pyridine/pyrazine ancillary ligands

Abstract

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