Stimuli-responsive room-temperature phosphorescence regulation based on molecular packing mode conversion

Zhou, Yuhang; Song, Jinming; Hu, Ying; Cao, Jingyu; Fu, Yanyan; Ma, Xiang

doi:10.1016/j.dyepig.2023.111272

“…External stimuli-responsive fluorescent materials are of great interest because of their promising utilization in optoelectronic devices, sensors, photopatterning, biomedical delivery, and therapy systems [1][2][3][4][5][6][7][8][9][10][11][12][13]. A number of studies have been reported on the design of organic, inorganic, and organic-inorganic hybrid systems that respond to external or internal stimuli such as light, heat, force, magnet, electricity, specific chemicals, etc [5,[14][15][16][17][18][19][20][21][22]. For instance, chemical combination of photochromic compounds and organic fluorophores can be extended to the development of photoluminescent organic materials capable of responding to various stimuli (such as light wavelength, temperature, etc) [23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Pyrene-Substituted Azobenzene Derivatives and Their Assembly into Flat Structures for Stimuli-Induced Switching

Thu,

Han

2023

J. Photopol. Sci. Technol.

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We report the design of pyrene-substituted azobenzene chromophores and their assembly into flat aggregates capable of repeated switching of their absorption and emission properties in response to light and heat. The introduction of a relatively longer butoxy linker between the pyrene and azobenzene (AzBuPy) resulted in the production of more than 90% of cisazobenzene at the photostationary state of ultraviolet (UV) light, as determined by UV-visible absorption and 1 H NMR spectral data. Flat petal-shaped micrometer-sized structures formed in highly polar DMF-H2O mixtures did not experience severe disassembly even after sufficient UV light irradiation, and showed excellent photoswitching performance. In addition, we investigated light and heat responses of DPA@AzBuPy aggregates assembled from hydrophobic fluorophore (9,10-diphenylanthracene: DPA) and AzBuPy mixtures.

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Achieving Efficient Dark Blue Room‐Temperature Phosphorescence with Ultra‐Wide Range Tunable‐Lifetime

Zhou,

Song,

He

et al. 2024

Angewandte Chemie

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Tunable‐lifetime room‐temperature phosphorescence (RTP) materials have been widely studied due to their broad applications. However, only few reports have achieved wide‐range lifetime modulation. In this work, ultra‐wide range tunable‐lifetime efficient dark blue RTP materials were realized by doping methyl benzoate derivatives into polyvinyl alcohol (PVA) matrix. The phosphorescence lifetimes of the doped film can be increased from 32.8 ms to 1925.8 ms. Such wide range of phosphorescence lifetime modulation is extremely rare in current reports. Moreover, the phosphorescence emission of the methyl 4‐hydroxybenzoate‐doped film is located in the dark blue region and the phosphorescence quantum yield reaches as high as 15.4%, which broadens their applications in organic optoelectronic information. Further studies demonstrated that the reason for the tunable lifetime was that the magnitude of the electron‐donating ability of the substituent group modulates the HOMO‐LUMO and singlet‐triplet energy gap of methyl benzoate derivatives, as well as the ability to non‐covalent interactions with PVA. Moreover, the potential applications of luminescent displays and optical anti‐counterfeiting of these high‐performance dark blue RTP materials have been conducted.

show abstract

Achieving Efficient Dark Blue Room‐Temperature Phosphorescence with Ultra‐Wide Range Tunable‐Lifetime

Zhou,

Song,

He

et al. 2024

Self Cite

View full text Add to dashboard Cite

Tunable‐lifetime room‐temperature phosphorescence (RTP) materials have been widely studied due to their broad applications. However, only few reports have achieved wide‐range lifetime modulation. In this work, ultra‐wide range tunable‐lifetime efficient dark blue RTP materials were realized by doping methyl benzoate derivatives into polyvinyl alcohol (PVA) matrix. The phosphorescence lifetimes of the doped film can be increased from 32.8 ms to 1925.8 ms. Such wide range of phosphorescence lifetime modulation is extremely rare in current reports. Moreover, the phosphorescence emission of the methyl 4‐hydroxybenzoate‐doped film is located in the dark blue region and the phosphorescence quantum yield reaches as high as 15.4%, which broadens their applications in organic optoelectronic information. Further studies demonstrated that the reason for the tunable lifetime was that the magnitude of the electron‐donating ability of the substituent group modulates the HOMO‐LUMO and singlet‐triplet energy gap of methyl benzoate derivatives, as well as the ability to non‐covalent interactions with PVA. Moreover, the potential applications of luminescent displays and optical anti‐counterfeiting of these high‐performance dark blue RTP materials have been conducted.

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Stimuli-responsive room-temperature phosphorescence regulation based on molecular packing mode conversion

Cited by 6 publications

References 57 publications

Synthesis of Pyrene-Substituted Azobenzene Derivatives and Their Assembly into Flat Structures for Stimuli-Induced Switching

Synthesis of Pyrene-Substituted Azobenzene Derivatives and Their Assembly into Flat Structures for Stimuli-Induced Switching

Achieving Efficient Dark Blue Room‐Temperature Phosphorescence with Ultra‐Wide Range Tunable‐Lifetime

Achieving Efficient Dark Blue Room‐Temperature Phosphorescence with Ultra‐Wide Range Tunable‐Lifetime

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