A temperature-dependent tricoloured mechanochromic fluorescence material with polymorphic structures

Zhang, Xinghong; Yuan, Shuang; Lu, Yunxiang; Lan, Haichuang; Xiao, Shuzhang; Yi, Tao

doi:10.1039/d2tc02717h

Cited by 6 publications

(1 citation statement)

References 58 publications

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“…This heightened ICT effectively suppresses the occurrence of the ESIPT process . By comparing the fluorescence spectra of the crystal at room temperature and 77 K, it was found that a distinct shoulder peak around 460 nm related to the vibrational structure of compound 1 was observed at 77 K. The blue shift of the fluorescence at 77 K may be attributed to the rotation of the molecule that is suppressed in the crystalline state at low temperature, resulting in more expression of the LE emission. − …”

Section: Resultsmentioning

confidence: 94%

Low-Temperature-Resistant Elastic Organic Crystals with Variable Amplified Spontaneous Emissions

Di,

Zhang

2023

J. Phys. Chem. C

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In recent times, multitudes of organic crystals exhibiting temperature-dependent emissions have been reported, as temperature influences the electron transition process and/or molecular packing structures. However, exploration of the properties and applications of organic crystals at low temperatures remains scarce. By utilizing an organic crystal possessing a simple molecular structure, remarkable flexibility, and amplified spontaneous emission (ASE) characteristics, we present herein an elastic organic crystalline material capable of serving as a color-changing lasing medium at different temperatures, both in the straight and in the bent states. Moreover, at low temperatures, even in liquid nitrogen, the crystal exhibits favorable optical waveguide properties, rendering it a promising optical transmission medium for cryogenic engineering. The successful realization of a flexible organic tunable laser, along with an optical transmission medium, broadens the range of organic crystals available for extreme temperature conditions.

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Section: Resultsmentioning

confidence: 94%

Low-Temperature-Resistant Elastic Organic Crystals with Variable Amplified Spontaneous Emissions

Di,

Zhang

2023

J. Phys. Chem. C

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Near‐infrared Piezochromic Materials at High Pressure

Ouyang

et al. 2023

ChemPhysChem

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The study of piezochromic materials (PCMs) has become an attractive field and numerous scholars have reported various material structures and phenomena. PCMs incorporating near‐infrared (NIR) emission have led to a broader range of applications due to the strong penetration and interference resistance of longer wavelength light sources. However, NIR PCMs are still rare due to difficulties in tuning molecular configuration, conformation and stacking structure. In this review, organic compounds are classified according to their types and structures, and recent advances in NIR PCMs are comprehensively summarized and described. The various factors affecting the piezochromic properties from the perspective of the compound structure are shown. The effects of pressure on the photophysical changes of different compounds are discussed. It is expected to provide ideas for subsequent NIR PCMs, from structural design to predicting their photophysical properties under pressure.

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Vinyl-dependent multicolor solid-state emission and different mechanofluorochromic activity on 1,2,4,5-tetraarylimidazole series

Jia

Gao

et al. 2023

Dyes and Pigments

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A temperature-dependent tricoloured mechanochromic fluorescence material with polymorphic structures

Abstract: High-contrast mechanochromic fluorescent materials are highly appealing due to their potential applications in security, anti-counterfeiting and memory. Considering that polymorphic molecules usually exhibit reversible mechanochromism, we adopted Polymorph Prediction to...

Cited by 6 publications

References 58 publications

Low-Temperature-Resistant Elastic Organic Crystals with Variable Amplified Spontaneous Emissions

Low-Temperature-Resistant Elastic Organic Crystals with Variable Amplified Spontaneous Emissions

Near‐infrared Piezochromic Materials at High Pressure

Vinyl-dependent multicolor solid-state emission and different mechanofluorochromic activity on 1,2,4,5-tetraarylimidazole series

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