Volume 61, Issue 45 e202206825
Research Article

Regulating Crystal Packing by Terminal tert-Butylation for Enhanced Solid-State Emission and Efficacious Charge Transport in an Anthracene-Based Molecular Crystal

Dr. Jie Li

Dr. Jie Li

Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072 China

These authors contributed equally to this work.

Contribution: Data curation (lead), ​Investigation (lead), Methodology (lead), Writing - original draft (equal)

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Dr. Zhengsheng Qin

Dr. Zhengsheng Qin

Beijing National Laboratory for Molecular Sciences, Key laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

These authors contributed equally to this work.

Contribution: Data curation (equal), ​Investigation (equal), Methodology (equal)

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Dr. Yajing Sun

Dr. Yajing Sun

Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072 China

These authors contributed equally to this work.

Contribution: Data curation (supporting), Formal analysis (equal), Software (lead)

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Prof. Yonggang Zhen

Prof. Yonggang Zhen

Beijing National Laboratory for Molecular Sciences, Key laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

These authors contributed equally to this work.

Contribution: Data curation (supporting), Formal analysis (supporting)

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Prof. Jie Liu

Prof. Jie Liu

Beijing National Laboratory for Molecular Sciences, Key laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

Contribution: Methodology (supporting), Resources (supporting)

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Prof. Ye Zou

Prof. Ye Zou

Beijing National Laboratory for Molecular Sciences, Key laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

Contribution: Data curation (supporting), Methodology (supporting)

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Dr. Chunlei Li

Dr. Chunlei Li

Beijing National Laboratory for Molecular Sciences, Key laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

Contribution: Data curation (supporting), Validation (supporting)

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Xueying Lu

Xueying Lu

Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072 China

Contribution: Methodology (supporting), Software (supporting)

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Prof. Lang Jiang

Prof. Lang Jiang

Beijing National Laboratory for Molecular Sciences, Key laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

Contribution: Methodology (supporting), Validation (supporting)

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Prof. Xiaotao Zhang

Prof. Xiaotao Zhang

Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072 China

Contribution: Validation (supporting)

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Prof. Deyang Ji

Prof. Deyang Ji

Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072 China

Contribution: Validation (supporting)

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Prof. Liqiang Li

Prof. Liqiang Li

Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072 China

Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207 China

Contribution: Conceptualization (lead), Funding acquisition (lead), Supervision (lead), Writing - original draft (lead)

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Prof. Huanli Dong

Prof. Huanli Dong

Beijing National Laboratory for Molecular Sciences, Key laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 China

Contribution: Conceptualization (lead), Funding acquisition (lead), Project administration (lead), Supervision (lead), Writing - original draft (lead)

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Prof. Wenping Hu

Corresponding Author

Prof. Wenping Hu

Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072 China

Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207 China

Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192 China

Contribution: Conceptualization (lead), Funding acquisition (lead), Project administration (lead), Supervision (lead), Writing - original draft (lead), Writing - review & editing (lead)

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First published: 21 August 2022
Citations: 17

Minor changes have been made to this paper since its publication in Early View.

Graphical Abstract

An anthracene-based molecular crystal with a unique “slipped herringbone” packing motif has been developed by delicate crystal engineering through terminal tert-butylation. Appropriate exciton-exciton coupling/electron-phonon coupling originating from the unique crystal packing induces a remarkably strong solid-state emission (photoluminescence quantum efficiency, ΦF=74.9 %) and efficacious charge transport (carrier mobility, μ=5.0 cm2 V−1 s−1).

Abstract

Organic semiconductors with combinative high carrier mobility and efficient solid-state emission are full of challenges but urgently pursued for developing new emerging optoelectronics. Herein, by delicately regulating the crystal packing of an anthracene-based molecular crystal via terminal tert-butylation, we developed a superior high mobility emissive molecule, 2,6-di(6-tert-butylnaphthyl)anthracene (TBU-DNA). The unique “slipped herringbone” packing motif of TBU-DNA enables its appropriate exciton-exciton coupling and electron-phonon coupling, thus resulting in remarkably high solid-state emission (photoluminescence quantum yield, ΦF≈74.9 %) and efficacious charge transport (carrier mobility, μ=5.0 cm2 V−1 s−1). Furthermore, OLETs based on TBU-DNA show an external quantum efficiency (EQE) of 1.8 %, which is among the highest EQE values for single component OLETs reported till now. This work presents a crystal engineering strategy via exquisite molecular design to realize high mobility emissive organic semiconductors.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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