Fluorescence emission modulation in cyanido-bridged Fe(II) spin crossover coordination polymers

Xue Ru Wu; Zhi Kun Liu; Min Zeng; Ming Xing Chen; Jun Tao; Shu Qi Wu; Hui Zhong Kou

doi:10.1007/s11426-022-1294-8

Fluorescence emission modulation in cyanido-bridged Fe(II) spin crossover coordination polymers

Xue Ru Wu, Zhi Kun Liu, Min Zeng, Ming Xing Chen, Jun Tao, Shu Qi Wu^*, Hui Zhong Kou^*

^*此作品的通讯作者

化学与化工学院

科研成果: 期刊稿件 › 文章 › 同行评审

16 引用（Scopus）

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Synergistic fluorescent spin crossover (SCO) bifunctional molecular materials have novel applications in the molecule-based magneto-optical switches. Herein, we report two novel three-dimensional (3D) Hofmann-type fluorescent SCO complexes [Fe^II-(tppe)M^I(CN)₂]ClO₄·nSolv (tppe = tetra-(4-pyridylphenyl)ethene, M = Ag (tppe-Ag), Au (tppe-Au)). Both complexes show one-step abrupt SCO with the transition temperature of 230 K for tppe-Ag, and 245 K for tppe-Au accompanied by a color change from red to light yellow. The SCO process is confirmed by the variable-temperature single-crystal X-ray diffraction analysis on tppe-Ag. For the first time, the abnormal increase in emission intensity and concomitant large bathochromic shifts in the fluorescence spectra during the SCO process are realized in the 3D Hofmann-type coordination polymers expanded by the tetradentate tppe ligand. Moreover, tppe-Ag exhibits the unprecedented fluorescence emission from green to the edge of yellow.[Figure not available: see fulltext.]

源语言	英语
页（从-至）	1569-1576
页数	8
期刊	Science China Chemistry
卷	65
期	8
DOI	https://doi.org/10.1007/s11426-022-1294-8
出版状态	已出版 - 8月 2022

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title = "Fluorescence emission modulation in cyanido-bridged Fe(II) spin crossover coordination polymers",

abstract = "Synergistic fluorescent spin crossover (SCO) bifunctional molecular materials have novel applications in the molecule-based magneto-optical switches. Herein, we report two novel three-dimensional (3D) Hofmann-type fluorescent SCO complexes [FeII-(tppe)MI(CN)2]ClO4·nSolv (tppe = tetra-(4-pyridylphenyl)ethene, M = Ag (tppe-Ag), Au (tppe-Au)). Both complexes show one-step abrupt SCO with the transition temperature of 230 K for tppe-Ag, and 245 K for tppe-Au accompanied by a color change from red to light yellow. The SCO process is confirmed by the variable-temperature single-crystal X-ray diffraction analysis on tppe-Ag. For the first time, the abnormal increase in emission intensity and concomitant large bathochromic shifts in the fluorescence spectra during the SCO process are realized in the 3D Hofmann-type coordination polymers expanded by the tetradentate tppe ligand. Moreover, tppe-Ag exhibits the unprecedented fluorescence emission from green to the edge of yellow.[Figure not available: see fulltext.]",

keywords = "coordination polymers, fluorescence, multifunctional materials, spin crossover, synergetic effect",

author = "Wu, {Xue Ru} and Liu, {Zhi Kun} and Min Zeng and Chen, {Ming Xing} and Jun Tao and Wu, {Shu Qi} and Kou, {Hui Zhong}",

note = "Publisher Copyright: {\textcopyright} 2022, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.",

year = "2022",

month = aug,

doi = "10.1007/s11426-022-1294-8",

language = "English",

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TY - JOUR

T1 - Fluorescence emission modulation in cyanido-bridged Fe(II) spin crossover coordination polymers

AU - Wu, Xue Ru

AU - Liu, Zhi Kun

AU - Zeng, Min

AU - Chen, Ming Xing

AU - Tao, Jun

AU - Wu, Shu Qi

AU - Kou, Hui Zhong

PY - 2022/8

Y1 - 2022/8

N2 - Synergistic fluorescent spin crossover (SCO) bifunctional molecular materials have novel applications in the molecule-based magneto-optical switches. Herein, we report two novel three-dimensional (3D) Hofmann-type fluorescent SCO complexes [FeII-(tppe)MI(CN)2]ClO4·nSolv (tppe = tetra-(4-pyridylphenyl)ethene, M = Ag (tppe-Ag), Au (tppe-Au)). Both complexes show one-step abrupt SCO with the transition temperature of 230 K for tppe-Ag, and 245 K for tppe-Au accompanied by a color change from red to light yellow. The SCO process is confirmed by the variable-temperature single-crystal X-ray diffraction analysis on tppe-Ag. For the first time, the abnormal increase in emission intensity and concomitant large bathochromic shifts in the fluorescence spectra during the SCO process are realized in the 3D Hofmann-type coordination polymers expanded by the tetradentate tppe ligand. Moreover, tppe-Ag exhibits the unprecedented fluorescence emission from green to the edge of yellow.[Figure not available: see fulltext.]

AB - Synergistic fluorescent spin crossover (SCO) bifunctional molecular materials have novel applications in the molecule-based magneto-optical switches. Herein, we report two novel three-dimensional (3D) Hofmann-type fluorescent SCO complexes [FeII-(tppe)MI(CN)2]ClO4·nSolv (tppe = tetra-(4-pyridylphenyl)ethene, M = Ag (tppe-Ag), Au (tppe-Au)). Both complexes show one-step abrupt SCO with the transition temperature of 230 K for tppe-Ag, and 245 K for tppe-Au accompanied by a color change from red to light yellow. The SCO process is confirmed by the variable-temperature single-crystal X-ray diffraction analysis on tppe-Ag. For the first time, the abnormal increase in emission intensity and concomitant large bathochromic shifts in the fluorescence spectra during the SCO process are realized in the 3D Hofmann-type coordination polymers expanded by the tetradentate tppe ligand. Moreover, tppe-Ag exhibits the unprecedented fluorescence emission from green to the edge of yellow.[Figure not available: see fulltext.]

KW - coordination polymers

KW - fluorescence

KW - multifunctional materials

KW - spin crossover

KW - synergetic effect

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Fluorescence emission modulation in cyanido-bridged Fe(II) spin crossover coordination polymers

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