Bright blue phosphorescence from cationic bis-cyclometalated iridium(III) isocyanide complexes

Research output: Contribution to journalArticlepeer-review

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Bright blue phosphorescence from cationic bis-cyclometalated iridium(III) isocyanide complexes. / Shavaleev, Nail M.; Monti, Filippo; Costa, Rubén D.; Scopelliti, Rosario; Bolink, Henk J.; Ortí, Enrique; Accorsi, Gianluca; Armaroli, Nicola; Baranoff, Etienne; Grätzel, Michael; Nazeeruddin, Mohammad K.

In: Inorganic Chemistry, Vol. 51, No. 4, 20.02.2012, p. 2263-2271.

Research output: Contribution to journalArticlepeer-review

Harvard

Shavaleev, NM, Monti, F, Costa, RD, Scopelliti, R, Bolink, HJ, Ortí, E, Accorsi, G, Armaroli, N, Baranoff, E, Grätzel, M & Nazeeruddin, MK 2012, 'Bright blue phosphorescence from cationic bis-cyclometalated iridium(III) isocyanide complexes', Inorganic Chemistry, vol. 51, no. 4, pp. 2263-2271. https://doi.org/10.1021/ic202297h

APA

Shavaleev, N. M., Monti, F., Costa, R. D., Scopelliti, R., Bolink, H. J., Ortí, E., Accorsi, G., Armaroli, N., Baranoff, E., Grätzel, M., & Nazeeruddin, M. K. (2012). Bright blue phosphorescence from cationic bis-cyclometalated iridium(III) isocyanide complexes. Inorganic Chemistry, 51(4), 2263-2271. https://doi.org/10.1021/ic202297h

Vancouver

Shavaleev NM, Monti F, Costa RD, Scopelliti R, Bolink HJ, Ortí E et al. Bright blue phosphorescence from cationic bis-cyclometalated iridium(III) isocyanide complexes. Inorganic Chemistry. 2012 Feb 20;51(4):2263-2271. https://doi.org/10.1021/ic202297h

Author

Shavaleev, Nail M. ; Monti, Filippo ; Costa, Rubén D. ; Scopelliti, Rosario ; Bolink, Henk J. ; Ortí, Enrique ; Accorsi, Gianluca ; Armaroli, Nicola ; Baranoff, Etienne ; Grätzel, Michael ; Nazeeruddin, Mohammad K. / Bright blue phosphorescence from cationic bis-cyclometalated iridium(III) isocyanide complexes. In: Inorganic Chemistry. 2012 ; Vol. 51, No. 4. pp. 2263-2271.

Bibtex

@article{9836afe0e43449c1bedf73f1a06b3e06,
title = "Bright blue phosphorescence from cationic bis-cyclometalated iridium(III) isocyanide complexes",
abstract = "We report new bis-cyclometalated cationic iridium(III) complexes [(CN) 2Ir(CN-tert-Bu) 2](CF 3SO 3) that have tert-butyl isocyanides as neutral auxiliary ligands and 2-phenylpyridine or 2-(4'- fluorophenyl)-R-pyridines (where R is 4-methoxy, 4-tert-butyl, or 5-trifluoromethyl) as CN ligands. The complexes are white or pale yellow solids that show irreversible reduction and oxidation processes and have a large electrochemical gap of 3.58-3.83 V. They emit blue or bluegreen phosphorescence in liquid/solid solutions from a cyclometalatingligand- centered excited state. Their emission spectra show vibronic structure with the highest-energy luminescence peak at 440-459 nm. The corresponding quantum yields and observed excitedstate lifetimes are up to 76% and 46 μs, respectively, and the calculated radiative lifetimes are in the range of 46-82 μs. In solution, the photophysical properties of the complexes are solvent-independent, and their emission color is tuned by variation of the substituents in the cyclometalating ligand. For most of the complexes, an emission color red shift occurs in going from solution to neat solids. However, the shift is minimal for the complexes with bulky tert-butyl or trifluoromethyl groups on the cyclometalating ligands that prevent aggregation. We report the first example of an iridium(III) isocyanide complex that emits blue phosphorescence not only in solution but also as a neat solid.",
author = "Shavaleev, {Nail M.} and Filippo Monti and Costa, {Rub{\'e}n D.} and Rosario Scopelliti and Bolink, {Henk J.} and Enrique Ort{\'i} and Gianluca Accorsi and Nicola Armaroli and Etienne Baranoff and Michael Gr{\"a}tzel and Nazeeruddin, {Mohammad K.}",
year = "2012",
month = feb,
day = "20",
doi = "10.1021/ic202297h",
language = "English",
volume = "51",
pages = "2263--2271",
journal = "Inorganic Chemistry",
issn = "0020-1669",
publisher = "American Chemical Society",
number = "4",

}

RIS

TY - JOUR

T1 - Bright blue phosphorescence from cationic bis-cyclometalated iridium(III) isocyanide complexes

AU - Shavaleev, Nail M.

AU - Monti, Filippo

AU - Costa, Rubén D.

AU - Scopelliti, Rosario

AU - Bolink, Henk J.

AU - Ortí, Enrique

AU - Accorsi, Gianluca

AU - Armaroli, Nicola

AU - Baranoff, Etienne

AU - Grätzel, Michael

AU - Nazeeruddin, Mohammad K.

PY - 2012/2/20

Y1 - 2012/2/20

N2 - We report new bis-cyclometalated cationic iridium(III) complexes [(CN) 2Ir(CN-tert-Bu) 2](CF 3SO 3) that have tert-butyl isocyanides as neutral auxiliary ligands and 2-phenylpyridine or 2-(4'- fluorophenyl)-R-pyridines (where R is 4-methoxy, 4-tert-butyl, or 5-trifluoromethyl) as CN ligands. The complexes are white or pale yellow solids that show irreversible reduction and oxidation processes and have a large electrochemical gap of 3.58-3.83 V. They emit blue or bluegreen phosphorescence in liquid/solid solutions from a cyclometalatingligand- centered excited state. Their emission spectra show vibronic structure with the highest-energy luminescence peak at 440-459 nm. The corresponding quantum yields and observed excitedstate lifetimes are up to 76% and 46 μs, respectively, and the calculated radiative lifetimes are in the range of 46-82 μs. In solution, the photophysical properties of the complexes are solvent-independent, and their emission color is tuned by variation of the substituents in the cyclometalating ligand. For most of the complexes, an emission color red shift occurs in going from solution to neat solids. However, the shift is minimal for the complexes with bulky tert-butyl or trifluoromethyl groups on the cyclometalating ligands that prevent aggregation. We report the first example of an iridium(III) isocyanide complex that emits blue phosphorescence not only in solution but also as a neat solid.

AB - We report new bis-cyclometalated cationic iridium(III) complexes [(CN) 2Ir(CN-tert-Bu) 2](CF 3SO 3) that have tert-butyl isocyanides as neutral auxiliary ligands and 2-phenylpyridine or 2-(4'- fluorophenyl)-R-pyridines (where R is 4-methoxy, 4-tert-butyl, or 5-trifluoromethyl) as CN ligands. The complexes are white or pale yellow solids that show irreversible reduction and oxidation processes and have a large electrochemical gap of 3.58-3.83 V. They emit blue or bluegreen phosphorescence in liquid/solid solutions from a cyclometalatingligand- centered excited state. Their emission spectra show vibronic structure with the highest-energy luminescence peak at 440-459 nm. The corresponding quantum yields and observed excitedstate lifetimes are up to 76% and 46 μs, respectively, and the calculated radiative lifetimes are in the range of 46-82 μs. In solution, the photophysical properties of the complexes are solvent-independent, and their emission color is tuned by variation of the substituents in the cyclometalating ligand. For most of the complexes, an emission color red shift occurs in going from solution to neat solids. However, the shift is minimal for the complexes with bulky tert-butyl or trifluoromethyl groups on the cyclometalating ligands that prevent aggregation. We report the first example of an iridium(III) isocyanide complex that emits blue phosphorescence not only in solution but also as a neat solid.

UR - http://www.scopus.com/inward/record.url?scp=84857711879&partnerID=8YFLogxK

U2 - 10.1021/ic202297h

DO - 10.1021/ic202297h

M3 - Article

AN - SCOPUS:84857711879

VL - 51

SP - 2263

EP - 2271

JO - Inorganic Chemistry

JF - Inorganic Chemistry

SN - 0020-1669

IS - 4

ER -