PHOTOCHEMISTRY AND PHOTOBIOLOGY
·
2015
·Vol. 91
·期 4
·814-818
·
IF 2.266
Kai Zheng,Kai-Li Lou,Cheng-Hui Zeng,Sha-Sha Li,Zhi-Wen Nie,Shengliang Zhong
A new hybrid membrane was prepared by a facile method based on a highly luminescent lanthanide coordination polymer and agarose. The soft membrane was characterized by FT-IR, PXRD, SEM and luminescence. It is found that the soft membrane is a highly selective and sensitive sensor, among 19 metal ion solutions of Fe 3+ , Mg 2+ , Li + , Ca 2+ , Zn 2+ , Cu 2+ , Ba 2+ , Mn 2+ , Ru 3+ , Cr 3+ , Ag + , Sr 2+ , Cd 2+ , Na + , Ni 2+ , Pb 2+ , Fe 2+ , Hg 2+ and Ca 2+ , only Fe 3+ quench the luminescence. The sensing results can be distinguished by the naked eye in daylight or by irradiation of a portable UV light at the scene. Mechanism studies reveal the sensing is due to the decomposition of the coordination polymer 1 which induced by slow permeation of Fe 3+ . Further studies found anions of BO 3 − , CO 3 2 − , H 2 PO 4 − , Br − , Cl − , ClO 4 − , H 2 PO 4 − , I − , IO 3 − and NO 3 − will not quench the luminescence of the hybrid membrane, which imply that other anions in water would not disturb the detection result.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2012
·Vol. 42
·期 6
·2052-2061
·
IF 3.838
Cheng-Hui Zeng,Fu-Li Zhao,Yang-Yi Yang,Ming-Yuan Xie,Xue-Mei Ding,De-Jian Hou,Seik Weng Ng
A “basophilic method” for phenolic hydroxyl bridged lanthanide coordination polymers (CPs) was developed. With this method, eleven CPs with the general formula of [Ln(HL1)L1·H2O]n (Ln = Tb (1), Nd (2), Eu (3), Gd (4), La (5), Er (6), Y (7), H2L1 = 4-methyl salicylic acid) and [Ln(HL2)L2·2MeOH]n (Ln = Eu (8), Tb (9), Gd (10), La (11), H2L2 = 3-hydroxy-2-naphthoic acid) were synthesized based on two ligands, and five of them (1–4 and 8) were characterised by X-ray single crystal diffraction. The powder X-ray diffraction patterns (PXRD) of complexes showed that 1–7 are isostructural, 8–11 are isostructural. Furthermore, 1 was characterised by Fourier transform infrared (FT-IR), thermogravimetric analysis (TGA), differential thermal analysis (DTA), elemental analysis (EA), one and two photon luminescence were investigated in detail.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2014
·Vol. 640
·期 11
·2255-2260
·
IF 1.251
Zhi-Wen Nie,Sha-Sha Li,Cheng-Hui Zeng,Lei Wang,Yuan Li,Shun-Gao Yin,Sheng-Liang Zhong
[TbNa(4-msal) 4 (phen) 2 ] n ( 1 ) (4-msal = 4-methyl salicylic acid), a new hetero-metallic lanthanide coordination polymer (CP) involving sodium was synthesized. It crystallizes in the monoclinic space group P 2 1 / n , with a = 20.4809(9) Å, b = 9.8183(2) Å, c = 26.1987(11) Å, α = 90.00°, β = 112.922(5)°, γ = 90.00°, V = 4852.2(3) Å 3 , and Z = 4. The complex was characterized by single crystal and powder X-ray diffraction, elemental analysis (EA), and Fourier transform infrared (FT-IR) and luminescence spectroscopy. The luminescence properties of a powder sample of 1 were studied at room temperature and the luminescence lifetime and total quantum yield (QY) were determined.
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2018
·
IF 4.244
Xu’an Fang,Guosheng Chen,Junlang Qiu,Jianqiao Xu,Junhui Wang,Fang Zhu,Gangfeng Ouyang
In recent years, great concerns have been raised about salicylic acid (SA) and its derivatives as plant regulators. Therefore, precise determination of the distribution of SAs in the living plants is necessary for not only fundamental researches but also the regulating mechanisms. In this study, a custom-made solid phase microextraction (SPME) fiber based on diallyl dimethyl ammonium chloride-assembled graphene oxide-coated C18 composite (C18@GO@PDDA) was proposed for in vivo detection of salicylic acid, acetylsalicylic acid (ASA), 4-methyl salicylic acid（4-SA）and 3-methyl salicylic acid (3-SA) in aloe plants. Under the optimized conditions, the analytical performance evaluated in homogenized aloe plant tissues exhibited low detection limits (1.8–2.8 μg g −1 ), wide linear ranges (10–5000 μg g −1 ), and satisfactory reproducibility (relative standard deviations less than 8.4% and 9.3% for inter-fiber and intra-fiber assays, respectively). Under cadmium stress, the developed method was applied for the in vivo tracing of four salicylic acids in aloe plants. A 48-h in vivo tracing revealed that salicylic acids were involved in the pathway of cadmium stress tolerance. To our best knowledge, it is the first effort to realize the in vivo analysis of SA and its derivatives in plants, and it has a made a great step forward in the area of plant hormone analysis.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-10
·
IF 15.7
Lu Shuo,Liu Yashuang,Dong Jinfeng,Li Xuefeng
Here are described the dilution-driven gel-sol-gel-sol transitions in aromatic hydrotrope/zwitterionic surfactant bi-component aqueous mixtures. Long and entangled wormlike micelles (WLMs) of concentrated erucyl dimethyl amidopropyl betaine (EAPB) solutions sequentially transform into hexagonal liquid crystal phase (H 1 ), highly concentrated spherical micelles (HCSMs), and finally hexagonal close packed micellar phase (HCP) upon gradual introducing an aromatic hydrotrope, sodium salicylate (NaSal). The HCP then successively converts into HCSMs, WLMs, and spherical micelles (SMs) upon further dilution with water, corresponding to a gel-sol-gel-sol transition. This dilution-induced HCSMs to WLMs transition results in an interesting thickening process, which is caused by a slow kinetic process, from the agglomeration and recombination of SMs to long and rigid WLMs via the intermediately formed rodlike micelles. In this work, the sustained adjustment of the competitive self-sorting and co-assembly between hydrotropes and surfactants by dilution was identified, benefitting the creation and application of WLMs fluids with switchable viscosity.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）