SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Ming Liu,Jinglan Kan,Yuqing Yao,Yunqian Zhang,Bing Bian,Zhu Tao,Qianjiang Zhu,Xin Xiao
Herein, we report the facile preparation of two solid luminescent materials made from cucurbit[10]uril-based porous supramolecular assemblies , from simple precipitation of cucurbit[10]uril (Q[10]) in HCl solution (A) or HNO3 solution (B). Loading Q[10]-based porous supramolecular assemblies A or B with various fluorophore guests ( FG s), including dyes and fused ring compounds, to yield solid luminescent materials ( FG @ A s and FG @ B s) that exhibited fluorescence enhancement or colour changing fluorescence emission . Moreover, these solid luminescent materials could respond to certain volatile organic compounds, demonstrating promise as solid sensors.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 6
·1597-1603
·
IF 6.641
Ming Liu,Meixiang Yang,Yuqing Yao,Yingjie Zhang,Yunqian Zhang,Zhu Tao,Qianjiang Zhu,Gang Wei,Bing Bian,Xin Xiao
We report herein a cucurbit[10]uril-based porous supramolecular assembly (A) that is readily obtained in the presence of [ZnCl4]2− as a structure-directing agent in HCl solution. Loading the Q[10]-based porous supramolecular assembly A with various fluorophore guests, including various dyes and fused-ring compounds, yielded solid luminescent materials showing fluorescence enhancement or quenching or emission color change. Moreover, these solid luminescent materials could respond to certain volatile organic compounds. In particular, the assembly obtained by loading A with 1,8-diaminonaphthalene exhibited a distinct response to formaldehyde and could be used as a solid sensor.
研究领域:
化学
·
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 43
·期 18
·7028-7034
·
IF 3.069
Weitao Xu,Ming Liu,Mary Clare Escaño,Carl Redshaw,Bing Bian,Ying Fan,Zhu Tao,Xin Xiao
The interaction between cucuribit[10]uril (Q[10]) and a series of 4-pyrrolidinopyridinium salts bearing aliphatic substituents at the pyridinium nitrogen, namely 4-(C4H8N)C5H5NRBr, where R = Et (g1), n-butyl (g2), n-pentyl (g3), n-hexyl (g4), n-octyl (g5), n-dodecyl (g6), has been studied in aqueous solution by 1H NMR spectroscopy, electronic absorption spectroscopy and mass spectrometry. The results revealed that the guests g1–g5 are located completely inside the cavity differing only in the orientation of g1, g4 and g5 which are aligned with the portal, whilst g2 and g3 are perpendicular to it. For g6, the tetrahydropyrrole moiety remains outside of the portal. DFT calculations confirm the stability of the guests in the Q[10] and the possibility of their curved structure inside the Q[10].
研究领域:
化学
·
分子生物学
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2020
·
IF 4.613
Wei Zhang,Yang Luo,Yang Zhou,Ming Liu,Weitao Xu,Bing Bian,Zhu Tao,Xin Xiao
A new fluorescent probe composed of cucurbit[10]uril (Q[10]) and a water-soluble derivative of pyrene, aminopropyl-1-pyrenebutanamide (PBA), is designated. 1 H NMR spectroscopy reveals that PBA is encapsulated into Q[10] in an aqueous solution to form a stable 1:1 host-guest inclusion complex of PBA@Q[10]. This complex behaves as a highly selective fluorescence quenching probe for Fe 3+ in aqueous solutions that may be attributed to the efficient absorption of Fe 3+ , which hindering absorption of PBA@Q[10] probe at the excitation wavelength of 332 nm, and competitive experiments for the coexistence of Fe 3+ with one or all of the other metal ions (37 metal ions) reveals that the selectivity of PBA@Q[10] to Fe 3+ is not disturbed by the addition of 50.0 equiv. of the other metal ions. The limits of detection of Fe 3+ was determined to be 0.55 mM. Furthermore, the fluorescence enhancing effect of PBA@Q[10] for Ag + is detected at the above wavelength. According to the mechanistic studies, the fluorescence enhancing route involves interaction of Ag + ions with the probe, mainly under an internal charge transfer between Ag + and the probe. Outcomes of this study suggest that PBA@Q[10] probably functions as a potential and promising fluorescence sensor for monitoring of different polluting metal ions in waste waters.
研究领域:
分析化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）