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Title: Green grinding-coassembly engineering toward intrinsically luminescent tetracene in cocrystals
Authors: Huang, Yinjuan
Gong, Qiuyu
Ge, Jing
Tang, Pengpeng
Yu, Fei
Xiao, Lian
Wang, Zongrui
Sun, Handong
Yu, Jing
Li, Dong-Sheng
Xiong, Qihua
Zhang, Qichun
Keywords: Engineering::Materials
Issue Date: 2020
Source: Huang, Y., Gong, Q., Ge, J., Tang, P., Yu, F., Xiao, L., Wang, Z., Sun, H., Yu, J., Li, D., Xiong, Q. & Zhang, Q. (2020). Green grinding-coassembly engineering toward intrinsically luminescent tetracene in cocrystals. ACS Nano, 14(11), 15962-15972.
Project: RG 111/17
RG 2/17
RG 114/16
RG 8/16
MOE 2017-T2-1-021
MOE 2018-T 2-1-070
Journal: ACS Nano
Abstract: Developing an effective and green method toward organic functional cocrystals based on the solubility-mismatched coformers is highly desirable and very important. Herein, we applied a green two-step liquid-assisted-grinding coassembly (LAGC) in fabricating tetracene-octafluoronaphthalene (TC-OFN) cocrystals from solubility-mismatched pairs of tetracene (TC, poorly soluble, 0.2 mg mL-1) and octafluoronaphthalene (OFN, highly soluble, 0.2 × 104 mg mL-1). Such cocrystals are extremely difficult to prepare through the common solution-processing strategies. More importantly, this two-step LAGC process could allow us to efficiently prepare TC-OFN cocrystals in gram scale. The as-prepared cocrystals displayed the intrinsic green emission of TC with much higher photoluminescence quantum yield (13.75%) comparing with the pure solid TC with the almost-quenched emission (0.41%, aggregation-caused quenching (ACQ)). The ultrafast spectra study on these cocrystals verifies the successful barrier function of OFN molecules in interrupting the well-known singlet fission (SF) in TC solids. Furthermore, this method can allow us to easily fabricate fluorescent TC-OFN water inks, which can be employed to prepare luminescent paintings or highly emissive ultratransparent/flexible films.
ISSN: 1936-0851
DOI: 10.1021/acsnano.0c07416
DOI (Related Dataset): 10.21979/N9/PQ9GQC
Schools: School of Materials Science and Engineering 
School of Physical and Mathematical Sciences 
Organisations: City University of Hong Kong
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles
SPMS Journal Articles

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