Hydrogen-bonded supramolecular network triggers high-efficiency blue room-temperature phosphorescence

Sen Wu; Tao Wang; Eli Zysman-Colman

doi:10.31635/ccschem.024.202404623

Hydrogen-bonded supramolecular network triggers high-efficiency blue room-temperature phosphorescence

Sen Wu, Tao Wang^*, Eli Zysman-Colman^*

^*Corresponding author for this work

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

Abstract

Hydrogen bonding has been employed to suppress nonradiative decay in organic compounds that show room-temperature phosphorescence (RTP); however, the small number of structurally diverse examples makes it unclear how general this strategy is to turn on RTP. In this study, we report highly efficient blue RTP from 4,4′,4′′-nitrilotribenzoic acid ( TPA-CO₂H) in five structurally and chemically distinct hydrogen-bonded supramolecular networks. In doped films in poly(vinyl alcohol) (PVA), the phosphorescence quantum yield and lifetime (Φ_Ph and τ_Ph) reach 52% and 275 ms. Boric acid can also be used to turn on RTP, and the performance changes significantly when the sample is heated beyond the dehydration temperature of this host where there is a 14-fold enhancement in the Φ_Ph after heat treatment. Blue RTP similar to that observed in PVA was also observed using granulated sugar, gelatine, and paper as host matrices. This work elucidates for the first time the role and the generality of hydrogen bonding in activating efficient blue RTP and examines how the choice of hydrogen bonding host influences RTP performance. We further demonstrate how the emission color can be tuned by codoping the films with Rhodamine 6G.

Original language	English
Number of pages	14
Journal	CCS Chemistry
Early online date	19 Sept 2024
DOIs	https://doi.org/10.31635/ccschem.024.202404623
Publication status	E-pub ahead of print - 19 Sept 2024

Keywords

Room-temperature phosphorescence
Blue phosphorescence
4,4',4''-nitrilotribenzoic acid
Hydrogen bonding
Supramolecular networks

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Copyright © 2024 Chinese Chemical Society. Open Access: This article is published under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported license (CC BY-NC 3.0) (https://creativecommons.org/licenses/by-nc/3.0/). This license allows you, along with others to remix, tweak, and build upon your article non-commercially, as long as attribution to the original CCS publication is included.
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1 Finished
1 Active

Allan Watson Programme Grant: Boron: Beyond the Reagent
Watson, A. J. B. (PI), Morris, R. E. (CoI), Smith, A. D. (CoI) & Zysman-Colman, E. (CoI)
UK Research and Innovation
1/05/23 → 30/04/28
Project: Standard
H2020 MSCA IF 2019 AIE-RTP-PLED: H2020-MSCA-IF-2019 AIE-RTP-PLED
Zysman-Colman, E. (PI)
European Commission
20/06/20 → 19/06/22
Project: Fellowship

Hydrogen-Bonded Supramolecular Network Triggers High-Efficiency Blue Room- Temperature Phosphorescence (dataset)
Wu, S. (Creator), Wang, T. (Creator) & Zysman-Colman, E. (Creator), University of St Andrews, 14 Oct 2024
DOI: 10.17630/b9a99748-2ba4-4e7b-bbab-2838e7e929db
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Cite this

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title = "Hydrogen-bonded supramolecular network triggers high-efficiency blue room-temperature phosphorescence",

abstract = "Hydrogen bonding has been employed to suppress nonradiative decay in organic compounds that show room-temperature phosphorescence (RTP); however, the small number of structurally diverse examples makes it unclear how general this strategy is to turn on RTP. In this study, we report highly efficient blue RTP from 4,4′,4′′-nitrilotribenzoic acid ( TPA-CO2H) in five structurally and chemically distinct hydrogen-bonded supramolecular networks. In doped films in poly(vinyl alcohol) (PVA), the phosphorescence quantum yield and lifetime (ΦPh and τPh) reach 52% and 275 ms. Boric acid can also be used to turn on RTP, and the performance changes significantly when the sample is heated beyond the dehydration temperature of this host where there is a 14-fold enhancement in the ΦPh after heat treatment. Blue RTP similar to that observed in PVA was also observed using granulated sugar, gelatine, and paper as host matrices. This work elucidates for the first time the role and the generality of hydrogen bonding in activating efficient blue RTP and examines how the choice of hydrogen bonding host influences RTP performance. We further demonstrate how the emission color can be tuned by codoping the films with Rhodamine 6G.",

keywords = "Room-temperature phosphorescence, Blue phosphorescence, 4,4',4''-nitrilotribenzoic acid, Hydrogen bonding, Supramolecular networks",

author = "Sen Wu and Tao Wang and Eli Zysman-Colman",

note = "Funding: S.W. thanks the China Scholarship Council (grant no. 201906250199) for support. This project has received funding from the European Union{\textquoteright}s Horizon 2020 research and innovation programme under the Marie Sk{\l}odowska-Curie grant agreement No. 897098 (AIE- RTP-PLED). T. Wang acknowledges support from the Marie Sk{\l}odowska-Curie Individual Fellowship. The authors also thank the United Kingdom{\textquoteright}s Engineering and Physical Sciences Research Council for support (grant no. EP/ W007517/1).",

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AU - Wu, Sen

AU - Wang, Tao

AU - Zysman-Colman, Eli

N1 - Funding: S.W. thanks the China Scholarship Council (grant no. 201906250199) for support. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 897098 (AIE- RTP-PLED). T. Wang acknowledges support from the Marie Skłodowska-Curie Individual Fellowship. The authors also thank the United Kingdom’s Engineering and Physical Sciences Research Council for support (grant no. EP/ W007517/1).

PY - 2024/9/19

Y1 - 2024/9/19

N2 - Hydrogen bonding has been employed to suppress nonradiative decay in organic compounds that show room-temperature phosphorescence (RTP); however, the small number of structurally diverse examples makes it unclear how general this strategy is to turn on RTP. In this study, we report highly efficient blue RTP from 4,4′,4′′-nitrilotribenzoic acid ( TPA-CO2H) in five structurally and chemically distinct hydrogen-bonded supramolecular networks. In doped films in poly(vinyl alcohol) (PVA), the phosphorescence quantum yield and lifetime (ΦPh and τPh) reach 52% and 275 ms. Boric acid can also be used to turn on RTP, and the performance changes significantly when the sample is heated beyond the dehydration temperature of this host where there is a 14-fold enhancement in the ΦPh after heat treatment. Blue RTP similar to that observed in PVA was also observed using granulated sugar, gelatine, and paper as host matrices. This work elucidates for the first time the role and the generality of hydrogen bonding in activating efficient blue RTP and examines how the choice of hydrogen bonding host influences RTP performance. We further demonstrate how the emission color can be tuned by codoping the films with Rhodamine 6G.

AB - Hydrogen bonding has been employed to suppress nonradiative decay in organic compounds that show room-temperature phosphorescence (RTP); however, the small number of structurally diverse examples makes it unclear how general this strategy is to turn on RTP. In this study, we report highly efficient blue RTP from 4,4′,4′′-nitrilotribenzoic acid ( TPA-CO2H) in five structurally and chemically distinct hydrogen-bonded supramolecular networks. In doped films in poly(vinyl alcohol) (PVA), the phosphorescence quantum yield and lifetime (ΦPh and τPh) reach 52% and 275 ms. Boric acid can also be used to turn on RTP, and the performance changes significantly when the sample is heated beyond the dehydration temperature of this host where there is a 14-fold enhancement in the ΦPh after heat treatment. Blue RTP similar to that observed in PVA was also observed using granulated sugar, gelatine, and paper as host matrices. This work elucidates for the first time the role and the generality of hydrogen bonding in activating efficient blue RTP and examines how the choice of hydrogen bonding host influences RTP performance. We further demonstrate how the emission color can be tuned by codoping the films with Rhodamine 6G.

KW - Room-temperature phosphorescence

KW - Blue phosphorescence

KW - 4,4',4''-nitrilotribenzoic acid

KW - Hydrogen bonding

KW - Supramolecular networks

U2 - 10.31635/ccschem.024.202404623

DO - 10.31635/ccschem.024.202404623

M3 - Article

SN - 2096-5745

JO - CCS Chemistry

JF - CCS Chemistry

ER -

Hydrogen-bonded supramolecular network triggers high-efficiency blue room-temperature phosphorescence

Abstract

Keywords

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Projects

Allan Watson Programme Grant: Boron: Beyond the Reagent

H2020 MSCA IF 2019 AIE-RTP-PLED: H2020-MSCA-IF-2019 AIE-RTP-PLED

Datasets

Hydrogen-Bonded Supramolecular Network Triggers High-Efficiency Blue Room- Temperature Phosphorescence (dataset)

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