Probing Triplet Excited States and Managing Blue Light Emission of Neutral Tetradentate Platinum(II) Complexes

Cong You; Fang Xia; Yue Zhao; Yin Zhang; Yongjian Sheng; Yipei Wu; Xiao Chun Hang; Fei Chen; Huili Ma; Kang Shen; Zhengyi Sun; Takahiro Ueba; Satoshi Kera; Cong Zhang; Honghai Zhang; Zhi Kuan Chen; Wei Huang

doi:10.1021/acs.jpclett.8b00797

Probing Triplet Excited States and Managing Blue Light Emission of Neutral Tetradentate Platinum(II) Complexes

Cong You, Fang Xia, Yue Zhao, Yin Zhang, Yongjian Sheng, Yipei Wu, Xiao Chun Hang, Fei Chen, Huili Ma, Kang Shen, Zhengyi Sun, Takahiro Ueba, Satoshi Kera, Cong Zhang, Honghai Zhang, Zhi Kuan Chen, Wei Huang

Research output: Journal Publication › Article › peer-review

32 Citations (Scopus)

Abstract

The structural and photophysical properties of tetradentate Pt(ppzOppz), Pt(ppzOpopy), Pt(ppzOczpy), and Pt(czpyOczpy) have been experimentally and theoretically explored. Single-crystal diffraction measurements provided accurate structural information. Electrochemical and photophysical characterizations revealed internal electronic energy levels in ground and excited states. (Time-dependent) Density functional theory calculation revealed electron distributions in transition processes of S₀ → S₁ and S₁ → T₁ → S₀. Electronic transition study indicated that Pt(ppzOppz) demonstrated mixed MLCT/LC states and Pt(czpyOczpy) showed MLCT-dominated states in S₁ and T₁. Both Pt(ppzOpopy) and Pt(ppzOczpy) presented strong delocalized spin transition (DST) during intersystem crossing. Upon frame modification of Pt(ppzOczpy), we found that their S₁ and T₁ can be independently manipulated. These blue emitters showed a tunable and narrow emission band (the narrowest fwhm was 19 nm) with luminescence efficiency as high as 86%. The findings of the DST transition mode in the neutral Pt(II) complexes provide guidance for rational design of novel phosphorescent materials.

Original language	English
Pages (from-to)	2285-2292
Number of pages	8
Journal	Journal of Physical Chemistry Letters
Volume	9
Issue number	9
DOIs	https://doi.org/10.1021/acs.jpclett.8b00797
Publication status	Published - 3 May 2018
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Physical and Theoretical Chemistry

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10.1021/acs.jpclett.8b00797

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You, C., Xia, F., Zhao, Y., Zhang, Y., Sheng, Y., Wu, Y., Hang, X. C., Chen, F., Ma, H., Shen, K., Sun, Z., Ueba, T., Kera, S., Zhang, C., Zhang, H., Chen, Z. K., & Huang, W. (2018). Probing Triplet Excited States and Managing Blue Light Emission of Neutral Tetradentate Platinum(II) Complexes. Journal of Physical Chemistry Letters, 9(9), 2285-2292. https://doi.org/10.1021/acs.jpclett.8b00797

@article{816c6e39e77b4826ba2a0b6b93bc947e,

title = "Probing Triplet Excited States and Managing Blue Light Emission of Neutral Tetradentate Platinum(II) Complexes",

abstract = "The structural and photophysical properties of tetradentate Pt(ppzOppz), Pt(ppzOpopy), Pt(ppzOczpy), and Pt(czpyOczpy) have been experimentally and theoretically explored. Single-crystal diffraction measurements provided accurate structural information. Electrochemical and photophysical characterizations revealed internal electronic energy levels in ground and excited states. (Time-dependent) Density functional theory calculation revealed electron distributions in transition processes of S0 → S1 and S1 → T1 → S0. Electronic transition study indicated that Pt(ppzOppz) demonstrated mixed MLCT/LC states and Pt(czpyOczpy) showed MLCT-dominated states in S1 and T1. Both Pt(ppzOpopy) and Pt(ppzOczpy) presented strong delocalized spin transition (DST) during intersystem crossing. Upon frame modification of Pt(ppzOczpy), we found that their S1 and T1 can be independently manipulated. These blue emitters showed a tunable and narrow emission band (the narrowest fwhm was 19 nm) with luminescence efficiency as high as 86%. The findings of the DST transition mode in the neutral Pt(II) complexes provide guidance for rational design of novel phosphorescent materials.",

author = "Cong You and Fang Xia and Yue Zhao and Yin Zhang and Yongjian Sheng and Yipei Wu and Hang, {Xiao Chun} and Fei Chen and Huili Ma and Kang Shen and Zhengyi Sun and Takahiro Ueba and Satoshi Kera and Cong Zhang and Honghai Zhang and Chen, {Zhi Kuan} and Wei Huang",

note = "Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

year = "2018",

month = may,

day = "3",

doi = "10.1021/acs.jpclett.8b00797",

language = "English",

volume = "9",

pages = "2285--2292",

journal = "Journal of Physical Chemistry Letters",

issn = "1948-7185",

publisher = "American Chemical Society",

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You, C, Xia, F, Zhao, Y, Zhang, Y, Sheng, Y, Wu, Y, Hang, XC, Chen, F, Ma, H, Shen, K, Sun, Z, Ueba, T, Kera, S, Zhang, C, Zhang, H, Chen, ZK & Huang, W 2018, 'Probing Triplet Excited States and Managing Blue Light Emission of Neutral Tetradentate Platinum(II) Complexes', Journal of Physical Chemistry Letters, vol. 9, no. 9, pp. 2285-2292. https://doi.org/10.1021/acs.jpclett.8b00797

TY - JOUR

T1 - Probing Triplet Excited States and Managing Blue Light Emission of Neutral Tetradentate Platinum(II) Complexes

AU - You, Cong

AU - Xia, Fang

AU - Zhao, Yue

AU - Zhang, Yin

AU - Sheng, Yongjian

AU - Wu, Yipei

AU - Hang, Xiao Chun

AU - Chen, Fei

AU - Ma, Huili

AU - Shen, Kang

AU - Sun, Zhengyi

AU - Ueba, Takahiro

AU - Kera, Satoshi

AU - Zhang, Cong

AU - Zhang, Honghai

AU - Chen, Zhi Kuan

AU - Huang, Wei

PY - 2018/5/3

Y1 - 2018/5/3

N2 - The structural and photophysical properties of tetradentate Pt(ppzOppz), Pt(ppzOpopy), Pt(ppzOczpy), and Pt(czpyOczpy) have been experimentally and theoretically explored. Single-crystal diffraction measurements provided accurate structural information. Electrochemical and photophysical characterizations revealed internal electronic energy levels in ground and excited states. (Time-dependent) Density functional theory calculation revealed electron distributions in transition processes of S0 → S1 and S1 → T1 → S0. Electronic transition study indicated that Pt(ppzOppz) demonstrated mixed MLCT/LC states and Pt(czpyOczpy) showed MLCT-dominated states in S1 and T1. Both Pt(ppzOpopy) and Pt(ppzOczpy) presented strong delocalized spin transition (DST) during intersystem crossing. Upon frame modification of Pt(ppzOczpy), we found that their S1 and T1 can be independently manipulated. These blue emitters showed a tunable and narrow emission band (the narrowest fwhm was 19 nm) with luminescence efficiency as high as 86%. The findings of the DST transition mode in the neutral Pt(II) complexes provide guidance for rational design of novel phosphorescent materials.

AB - The structural and photophysical properties of tetradentate Pt(ppzOppz), Pt(ppzOpopy), Pt(ppzOczpy), and Pt(czpyOczpy) have been experimentally and theoretically explored. Single-crystal diffraction measurements provided accurate structural information. Electrochemical and photophysical characterizations revealed internal electronic energy levels in ground and excited states. (Time-dependent) Density functional theory calculation revealed electron distributions in transition processes of S0 → S1 and S1 → T1 → S0. Electronic transition study indicated that Pt(ppzOppz) demonstrated mixed MLCT/LC states and Pt(czpyOczpy) showed MLCT-dominated states in S1 and T1. Both Pt(ppzOpopy) and Pt(ppzOczpy) presented strong delocalized spin transition (DST) during intersystem crossing. Upon frame modification of Pt(ppzOczpy), we found that their S1 and T1 can be independently manipulated. These blue emitters showed a tunable and narrow emission band (the narrowest fwhm was 19 nm) with luminescence efficiency as high as 86%. The findings of the DST transition mode in the neutral Pt(II) complexes provide guidance for rational design of novel phosphorescent materials.

UR - http://www.scopus.com/inward/record.url?scp=85046548913&partnerID=8YFLogxK

U2 - 10.1021/acs.jpclett.8b00797

DO - 10.1021/acs.jpclett.8b00797

M3 - Article

AN - SCOPUS:85046548913

SN - 1948-7185

VL - 9

SP - 2285

EP - 2292

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 9

ER -

Probing Triplet Excited States and Managing Blue Light Emission of Neutral Tetradentate Platinum(II) Complexes

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