Recognizing chiral amino acids with a dual-optical-response system

Wang, Yaxin; Zhou, Yajie; Zhao, Shanshan; Zhang, Mingjiang; Li, Anqi; Li, Guangen; Guo, Qi; Guo, Xueru; Tong, Zhi; Li, Zeyi; Lin, Jing; Zhuang, Taotao

doi:10.1039/d3ta07645h

J. Mater. Chem. A

2024

DOI: 10.1039/d3ta07645h

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Recognizing chiral amino acids with a dual-optical-response system

Yaxin Wang,

Yajie Zhou,

Shanshan Zhao

et al.

Abstract: Chiral amino acids are crucial for humans, and their recognition can provide information for pharmaceutical quality and clinical diagnosis. Histidine (His) and tryptophan (Trp), for example, have a close association...

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Nanofluidic ion rectification sensor for enantioselective recognition and detection

Wang,

Xie,

Xia

et al. 2024

Chinese Chemical Letters

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Nanofluidic ion rectification sensor for enantioselective recognition and detection

Wang,

Xie,

Xia

et al. 2024

Chinese Chemical Letters

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Stereochemical Activity and Luminescence Mechanism in (C₄H₁₂N)₂SnCl₆ Doped with ns² Metal Ions

Ren,

Wang,

Zhang

et al. 2024

Inorg. Chem.

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Metal halide luminescent materials, particularly those doped with ns 2 ions, exhibit exceptional optical properties. However, the luminescent mechanisms associated with the stereochemical activity of lone-pair electrons remain insufficiently explored. In this study, zero-dimensional (0D) tin-based halide (C 4 H 12 N) 2 SnCl 6 is utilized as a model system to investigate the effects of lattice distortion and lone-pair electron expression on fluorescence emission characteristics by doping with 6s 2 and 5s 2 ions. The findings reveal that compared to 6s 2 ions, 5s 2 ion doping results in stronger electron−phonon coupling, causing significant octahedral lattice distortion and producing unique dual emissions along with a large Stokes shift of 317 nm. Remarkably, even at temperatures as high as 360 K, (C 4 H 12 N) 2 SnCl 6 :Sb maintains its dual emission due to insufficient thermal activation energy to promote electron transition from excited state 1 to excited state 2. In contrast, 6s 2 doping exhibits a single blue emission with a small Stokes shift of 101 nm. Additionally, calculations of the electron localization function reveal that 5s 2 lone pairs exhibit static stereochemical expression with specific spatial orientation, while 6s 2 lone pairs display dynamic behavior. These findings highlight the critical role of lone-pair stereochemistry in governing the photophysical properties of ns 2 -doped metal halides, offering new insights into their luminescent mechanisms.

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Recognizing chiral amino acids with a dual-optical-response system

Abstract: Chiral amino acids are crucial for humans, and their recognition can provide information for pharmaceutical quality and clinical diagnosis. Histidine (His) and tryptophan (Trp), for example, have a close association...

Cited by 2 publications

References 42 publications

Nanofluidic ion rectification sensor for enantioselective recognition and detection

Nanofluidic ion rectification sensor for enantioselective recognition and detection

Stereochemical Activity and Luminescence Mechanism in (C₄H₁₂N)₂SnCl₆ Doped with ns² Metal Ions

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About

Recognizing chiral amino acids with a dual-optical-response system

Abstract: Chiral amino acids are crucial for humans, and their recognition can provide information for pharmaceutical quality and clinical diagnosis. Histidine (His) and tryptophan (Trp), for example, have a close association...

Cited by 2 publications

References 42 publications

Nanofluidic ion rectification sensor for enantioselective recognition and detection

Nanofluidic ion rectification sensor for enantioselective recognition and detection

Stereochemical Activity and Luminescence Mechanism in (C4H12N)2SnCl6 Doped with ns2 Metal Ions

Contact Info

Product

Resources

About

Stereochemical Activity and Luminescence Mechanism in (C₄H₁₂N)₂SnCl₆ Doped with ns² Metal Ions