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3 article(s) from Luo, Guangyan

Host–guest interaction and properties of cucurbit[8]uril with chloramphenicol

Lin Zhang,
Jun Zheng,
Guangyan Luo,
Xiaoyue Li,
Yunqian Zhang,
Zhu Tao and
Qianjun Zhang

Beilstein J. Org. Chem. 2021, 17, 2832–2839, doi:10.3762/bjoc.17.194

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Figure 1: The structures of chloramphenicol (A) and cucurbit[n]urils (B).

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Figure 2: (A) CPE and Q[8] structural model diagram, (B) interaction between CPE and Q[8], (C) CPE@Q[8] stack...

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Figure 3: UV–vis absorption spectra of CPE with Q[8] in aqueous solution (A) or hydrochloric acid solution (C...

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Figure 4: ITC data obtained for the binding of Q[8] with CPE in an aqueous solution at 25 °C.

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Figure 5: ¹H NMR spectra of CPE, CPE@Q[8] and Q[8] (V_D2O/V_DCl = 3:2).

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Figure 6: IR spectra recorded for Q[8] (a), CPE (b), a physical mixture of Q[8] and CPE (c), and the CPE@Q[8]...

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Figure 7: UV absorption intensity of CPE and CPE@Q[8] changes with time in the artificial gastrointestinal ju...

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Figure 8: Release curve of CPE and CPE@Q[8] in artificial gastrointestinal juice (pH 1.2, pH 6.8).

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Published 03 Dec 2021

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The fluorescence of a mercury probe based on osthol

Guangyan Luo,
Zhishu Zeng,
Lin Zhang,
Zhu Tao and
Qianjun Zhang

Beilstein J. Org. Chem. 2021, 17, 22–27, doi:10.3762/bjoc.17.3

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Figure 1: (A) Fluorescence spectra of OST (c = 3.0 × 10⁻⁵ mol∙L⁻¹) upon the addition of various metal ions. (...

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Figure 2: Metal ion selectivity of OST–Hg²⁺ (c = 3.0 × 10⁻⁵ mol∙L⁻¹) in the presence of 1.2 × 10⁻⁴ mol∙L⁻¹ of...

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Figure 3: Fluorescence spectra of OST (c = 3 × 10⁻⁵ mol∙L⁻¹) in H₂O/CH₃OH 97:3, v/v in the presence of an inc...

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Figure 4: The standard Job curve of mercury ions to OST (c = 3.0 × 10⁻⁵ mol∙L⁻¹) at 406 nm (pH 7.0, H₂O/CH₃OH...

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Figure 5: Mass spectrum of the probe with Hg²⁺.

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Figure 6: ¹H NMR titration spectra recorded for OST (c = 5 × 10⁻⁴ mol∙L⁻¹) during the addition of different m...

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Figure 7: The binding mode of OST and Hg²⁺.

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Published 05 Jan 2021

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Host–guest interaction of cucurbit[8]uril with oroxin A and its effect on the properties of oroxin A

Zhishu Zeng,
Jun Xie,
Guangyan Luo,
Zhu Tao and
Qianjun Zhang

Beilstein J. Org. Chem. 2020, 16, 2332–2337, doi:10.3762/bjoc.16.194

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Figure 1: The molecular structure of OA (A) and Q[8] (B).

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Figure 2: ¹H NMR titration of OA with Q[8] were performed in D₂O containing 10% DMSO by volume, OA (500 μmol·L...

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Figure 3: (A) The UV–vis absorption spectra recorded for OA in the presence of Q[8] (c(Q[8]), labeled a–k: 0,...

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Figure 4: IR spectra recorded for (a) Q[8], (b) OA, (c) a physical mixture of Q[8] and OA, and (d) the OA@Q[8...

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Figure 5: The possible interaction mode for OA@Q[8].

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Figure 6: The phase-solubility graph obtained for OA in a Q[8] aqueous solution at λ = 275 nm.

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Figure 7: The clearance rate curve of ABTS^+• upon increasing the concentration of OA and the OA@Q[8] inclusio...

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Figure 8: The release curves of OA and OA@Q[8].

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Published 22 Sep 2020

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