Unity fluorescent carbene–gold(i)–acetylide complexes with two-photon absorption and energy-efficient blue FOLEDs

Alexander C. Brannan; Hwan-Hee Cho; Jonathan Daniel; Amelia J. Harvey; Charles T. Smith; Nguyen Le Phuoc; Mikko Linnolahti; Mireille Blanchard-Desce; Neil C. Greenham; Alexander S. Romanov

doi:10.1039/D4TC02845G

Unity fluorescent carbene–gold(i)–acetylide complexes with two-photon absorption and energy-efficient blue FOLEDs

Alexander C. Brannan, Hwan-Hee Cho, Jonathan Daniel, Amelia J. Harvey, Charles T. Smith, Nguyen Le Phuoc, Mikko Linnolahti, Mireille Blanchard-Desce, Neil C. Greenham, Alexander S. Romanov

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Abstract

Two fluorescent organometallic “carbene-gold(i)-acetylide” (CMAc) complexes based on bicyclic alkyl(amino) carbene (BIC), 4-ethynyl-2,1,3-benzothiadiazole (Au1) and 4,7-diethynyl-2,1,3-benzothiadiazole (Au2) have been synthesized and characterized. Compounds Au1 and Au2 exhibit blue to yellow fluorescence with up to unity fluorescence quantum yields and radiative rates exceeding 10 ⁸ s ⁻¹. The dipolar Au1 complex exhibits a low two photon absorption cross-section (2PA σ ₂) of 0.8 GM, whereas the quadrupolar Au2 complex shows a high 2PA σ ₂ value of 90 GM. A fluorescent CMAc organic light emitting diode (OLED) emits blue electroluminescence with up to 4.7% external quantum efficiency.

Original language	English
Pages (from-to)	13545-13554
Number of pages	10
Journal	Journal of Materials Chemistry C
Volume	12
Issue number	34
Early online date	19 Jul 2024
DOIs	https://doi.org/10.1039/D4TC02845G
Publication status	Published - 14 Sept 2024

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10.1039/D4TC02845G

Manuscript_2PA_cleanAccepted author manuscript, 6.52 MBLicence: CC BY

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Brannan, A. C., Cho, H.-H., Daniel, J., Harvey, A. J., Smith, C. T., Phuoc, N. L., Linnolahti, M., Blanchard-Desce, M., Greenham, N. C., & Romanov, A. S. (2024). Unity fluorescent carbene–gold(i)–acetylide complexes with two-photon absorption and energy-efficient blue FOLEDs. Journal of Materials Chemistry C, 12(34), 13545-13554. https://doi.org/10.1039/D4TC02845G

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title = "Unity fluorescent carbene–gold(i)–acetylide complexes with two-photon absorption and energy-efficient blue FOLEDs",

abstract = "Two fluorescent organometallic “carbene-gold(i)-acetylide” (CMAc) complexes based on bicyclic alkyl(amino) carbene (BIC), 4-ethynyl-2,1,3-benzothiadiazole (Au1) and 4,7-diethynyl-2,1,3-benzothiadiazole (Au2) have been synthesized and characterized. Compounds Au1 and Au2 exhibit blue to yellow fluorescence with up to unity fluorescence quantum yields and radiative rates exceeding 10 8 s −1. The dipolar Au1 complex exhibits a low two photon absorption cross-section (2PA σ 2) of 0.8 GM, whereas the quadrupolar Au2 complex shows a high 2PA σ 2 value of 90 GM. A fluorescent CMAc organic light emitting diode (OLED) emits blue electroluminescence with up to 4.7% external quantum efficiency.",

author = "Brannan, {Alexander C.} and Hwan-Hee Cho and Jonathan Daniel and Harvey, {Amelia J.} and Smith, {Charles T.} and Phuoc, {Nguyen Le} and Mikko Linnolahti and Mireille Blanchard-Desce and Greenham, {Neil C.} and Romanov, {Alexander S.}",

year = "2024",

month = sep,

day = "14",

doi = "10.1039/D4TC02845G",

language = "English",

volume = "12",

pages = "13545--13554",

journal = "Journal of Materials Chemistry C",

issn = "2050-7526",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Unity fluorescent carbene–gold(i)–acetylide complexes with two-photon absorption and energy-efficient blue FOLEDs

AU - Brannan, Alexander C.

AU - Cho, Hwan-Hee

AU - Daniel, Jonathan

AU - Harvey, Amelia J.

AU - Smith, Charles T.

AU - Phuoc, Nguyen Le

AU - Linnolahti, Mikko

AU - Blanchard-Desce, Mireille

AU - Greenham, Neil C.

AU - Romanov, Alexander S.

PY - 2024/9/14

Y1 - 2024/9/14

N2 - Two fluorescent organometallic “carbene-gold(i)-acetylide” (CMAc) complexes based on bicyclic alkyl(amino) carbene (BIC), 4-ethynyl-2,1,3-benzothiadiazole (Au1) and 4,7-diethynyl-2,1,3-benzothiadiazole (Au2) have been synthesized and characterized. Compounds Au1 and Au2 exhibit blue to yellow fluorescence with up to unity fluorescence quantum yields and radiative rates exceeding 10 8 s −1. The dipolar Au1 complex exhibits a low two photon absorption cross-section (2PA σ 2) of 0.8 GM, whereas the quadrupolar Au2 complex shows a high 2PA σ 2 value of 90 GM. A fluorescent CMAc organic light emitting diode (OLED) emits blue electroluminescence with up to 4.7% external quantum efficiency.

AB - Two fluorescent organometallic “carbene-gold(i)-acetylide” (CMAc) complexes based on bicyclic alkyl(amino) carbene (BIC), 4-ethynyl-2,1,3-benzothiadiazole (Au1) and 4,7-diethynyl-2,1,3-benzothiadiazole (Au2) have been synthesized and characterized. Compounds Au1 and Au2 exhibit blue to yellow fluorescence with up to unity fluorescence quantum yields and radiative rates exceeding 10 8 s −1. The dipolar Au1 complex exhibits a low two photon absorption cross-section (2PA σ 2) of 0.8 GM, whereas the quadrupolar Au2 complex shows a high 2PA σ 2 value of 90 GM. A fluorescent CMAc organic light emitting diode (OLED) emits blue electroluminescence with up to 4.7% external quantum efficiency.

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U2 - 10.1039/D4TC02845G

DO - 10.1039/D4TC02845G

M3 - Article

SN - 2050-7526

VL - 12

SP - 13545

EP - 13554

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 34

ER -

Unity fluorescent carbene–gold(i)–acetylide complexes with two-photon absorption and energy-efficient blue FOLEDs

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Unity fluorescent carbene–gold(i)–acetylide complexes with two-photon absorption and energy-efficient blue FOLEDs

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