Sky-blue thermally activated delayed fluorescence (TADF) based on Ag(i) complexes: Strong solvation-induced emission enhancement

Alexander V. Artem'ev; Marsel Z. Shafikov; Alexander Schinabeck; Olga V. Antonova; Alexey S. Berezin; Irina Yu Bagryanskaya; Pavel E. Plusnin; Hartmut Yersin

doi:10.1039/c9qi01069f

Sky-blue thermally activated delayed fluorescence (TADF) based on Ag(i) complexes: Strong solvation-induced emission enhancement

Alexander V. Artem'ev, Marsel Z. Shafikov, Alexander Schinabeck, Olga V. Antonova, Alexey S. Berezin, Irina Yu Bagryanskaya, Pavel E. Plusnin, Hartmut Yersin

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

17 Цитирования (Scopus)

Аннотация

A new Ag(i) complex based on tris(2-pyridyl)phosphine (Py₃P), [Ag₂(Py₃P)₃(SCN)₂], has been synthesized and chemically characterized. Theoretical calculations and photophysical investigations reveal thermally activated delayed fluorescence (TADF) coupled with outstanding solvato- A nd vapor-luminescent behavior. The parent complex [Ag₂(Py₃P)₃(SCN)₂] shows sky-blue TADF (λ_max = 469 nm) at ambient temperature with a quantum yield of Φ_PL = 16% and an emission decay time of 2.2 μs. Upon exposing the complex to CH₂Cl₂ or CHCl₃ vapors, [Ag₂(Py₃P)₃(SCN)₂]·0.66CH₂Cl₂ and [Ag₂(Py₃P)₃(SCN)₂]·CHCl₃ solvates are formed. This process is accompanied by a strong enhancement of the luminescence intensity. Both solvates also emit sky-blue TADF (λ_max = 478-483 nm), but the emission quantum yield reaches Φ_PL ≈ 70% at an emission decay time of 9-12 μs, depending on the solvent. According to DFT/TD-DFT computations, the observed TADF originates from a ¹(M + X)LCT excited state. The experimentally determined ΔE(S₁-T₁) gap for [Ag₂(Py₃P)₃(SCN)₂]·0.66CH₂Cl₂ is relatively large and amounts to 1040 cm^-1 (≈129 meV).

Язык оригинала	английский
Страницы (с-по)	3168-3176
Число страниц	9
Журнал	Inorganic Chemistry Frontiers
Том	6
Номер выпуска	11
DOI	https://doi.org/10.1039/c9qi01069f
Состояние	Опубликовано - 1 ноя 2019

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10.1039/c9qi01069f

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Artem'ev, Alexander V. ; Shafikov, Marsel Z. ; Schinabeck, Alexander ; Antonova, Olga V. ; Berezin, Alexey S. ; Bagryanskaya, Irina Yu ; Plusnin, Pavel E. ; Yersin, Hartmut. / Sky-blue thermally activated delayed fluorescence (TADF) based on Ag(i) complexes : Strong solvation-induced emission enhancement. В: Inorganic Chemistry Frontiers. 2019 ; Том 6, № 11. стр. 3168-3176.

@article{8cf3175bbd3f4db69d605e072840f60f,

title = "Sky-blue thermally activated delayed fluorescence (TADF) based on Ag(i) complexes: Strong solvation-induced emission enhancement",

abstract = "A new Ag(i) complex based on tris(2-pyridyl)phosphine (Py3P), [Ag2(Py3P)3(SCN)2], has been synthesized and chemically characterized. Theoretical calculations and photophysical investigations reveal thermally activated delayed fluorescence (TADF) coupled with outstanding solvato- A nd vapor-luminescent behavior. The parent complex [Ag2(Py3P)3(SCN)2] shows sky-blue TADF (λmax = 469 nm) at ambient temperature with a quantum yield of ΦPL = 16% and an emission decay time of 2.2 μs. Upon exposing the complex to CH2Cl2 or CHCl3 vapors, [Ag2(Py3P)3(SCN)2]·0.66CH2Cl2 and [Ag2(Py3P)3(SCN)2]·CHCl3 solvates are formed. This process is accompanied by a strong enhancement of the luminescence intensity. Both solvates also emit sky-blue TADF (λmax = 478-483 nm), but the emission quantum yield reaches ΦPL ≈ 70% at an emission decay time of 9-12 μs, depending on the solvent. According to DFT/TD-DFT computations, the observed TADF originates from a 1(M + X)LCT excited state. The experimentally determined ΔE(S1-T1) gap for [Ag2(Py3P)3(SCN)2]·0.66CH2Cl2 is relatively large and amounts to 1040 cm-1 (≈129 meV).",

keywords = "LIGHT-EMITTING-DIODES, CU(I) COMPLEXES, PHOTOLUMINESCENCE PROPERTIES, COORDINATION POLYMERS, SILVER(I) COMPLEXES, TRIPLET EMITTERS, DESIGN STRATEGY, BASIS-SETS, CU-I, LUMINESCENCE",

author = "Artem'ev, {Alexander V.} and Shafikov, {Marsel Z.} and Alexander Schinabeck and Antonova, {Olga V.} and Berezin, {Alexey S.} and Bagryanskaya, {Irina Yu} and Plusnin, {Pavel E.} and Hartmut Yersin",

year = "2019",

month = nov,

day = "1",

doi = "10.1039/c9qi01069f",

language = "English",

volume = "6",

pages = "3168--3176",

journal = "Inorganic Chemistry Frontiers",

issn = "2052-1545",

publisher = "Royal Society of Chemistry",

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Sky-blue thermally activated delayed fluorescence (TADF) based on Ag(i) complexes : Strong solvation-induced emission enhancement. / Artem'ev, Alexander V.; Shafikov, Marsel Z.; Schinabeck, Alexander; Antonova, Olga V.; Berezin, Alexey S.; Bagryanskaya, Irina Yu; Plusnin, Pavel E.; Yersin, Hartmut.

В: Inorganic Chemistry Frontiers, Том 6, № 11, 01.11.2019, стр. 3168-3176.

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

TY - JOUR

T1 - Sky-blue thermally activated delayed fluorescence (TADF) based on Ag(i) complexes

T2 - Strong solvation-induced emission enhancement

AU - Artem'ev, Alexander V.

AU - Shafikov, Marsel Z.

AU - Schinabeck, Alexander

AU - Antonova, Olga V.

AU - Berezin, Alexey S.

AU - Bagryanskaya, Irina Yu

AU - Plusnin, Pavel E.

AU - Yersin, Hartmut

PY - 2019/11/1

Y1 - 2019/11/1

N2 - A new Ag(i) complex based on tris(2-pyridyl)phosphine (Py3P), [Ag2(Py3P)3(SCN)2], has been synthesized and chemically characterized. Theoretical calculations and photophysical investigations reveal thermally activated delayed fluorescence (TADF) coupled with outstanding solvato- A nd vapor-luminescent behavior. The parent complex [Ag2(Py3P)3(SCN)2] shows sky-blue TADF (λmax = 469 nm) at ambient temperature with a quantum yield of ΦPL = 16% and an emission decay time of 2.2 μs. Upon exposing the complex to CH2Cl2 or CHCl3 vapors, [Ag2(Py3P)3(SCN)2]·0.66CH2Cl2 and [Ag2(Py3P)3(SCN)2]·CHCl3 solvates are formed. This process is accompanied by a strong enhancement of the luminescence intensity. Both solvates also emit sky-blue TADF (λmax = 478-483 nm), but the emission quantum yield reaches ΦPL ≈ 70% at an emission decay time of 9-12 μs, depending on the solvent. According to DFT/TD-DFT computations, the observed TADF originates from a 1(M + X)LCT excited state. The experimentally determined ΔE(S1-T1) gap for [Ag2(Py3P)3(SCN)2]·0.66CH2Cl2 is relatively large and amounts to 1040 cm-1 (≈129 meV).

AB - A new Ag(i) complex based on tris(2-pyridyl)phosphine (Py3P), [Ag2(Py3P)3(SCN)2], has been synthesized and chemically characterized. Theoretical calculations and photophysical investigations reveal thermally activated delayed fluorescence (TADF) coupled with outstanding solvato- A nd vapor-luminescent behavior. The parent complex [Ag2(Py3P)3(SCN)2] shows sky-blue TADF (λmax = 469 nm) at ambient temperature with a quantum yield of ΦPL = 16% and an emission decay time of 2.2 μs. Upon exposing the complex to CH2Cl2 or CHCl3 vapors, [Ag2(Py3P)3(SCN)2]·0.66CH2Cl2 and [Ag2(Py3P)3(SCN)2]·CHCl3 solvates are formed. This process is accompanied by a strong enhancement of the luminescence intensity. Both solvates also emit sky-blue TADF (λmax = 478-483 nm), but the emission quantum yield reaches ΦPL ≈ 70% at an emission decay time of 9-12 μs, depending on the solvent. According to DFT/TD-DFT computations, the observed TADF originates from a 1(M + X)LCT excited state. The experimentally determined ΔE(S1-T1) gap for [Ag2(Py3P)3(SCN)2]·0.66CH2Cl2 is relatively large and amounts to 1040 cm-1 (≈129 meV).

KW - LIGHT-EMITTING-DIODES

KW - CU(I) COMPLEXES

KW - PHOTOLUMINESCENCE PROPERTIES

KW - COORDINATION POLYMERS

KW - SILVER(I) COMPLEXES

KW - TRIPLET EMITTERS

KW - DESIGN STRATEGY

KW - BASIS-SETS

KW - CU-I

KW - LUMINESCENCE

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U2 - 10.1039/c9qi01069f

DO - 10.1039/c9qi01069f

M3 - Article

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VL - 6

SP - 3168

EP - 3176

JO - Inorganic Chemistry Frontiers

JF - Inorganic Chemistry Frontiers

SN - 2052-1545

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