尽管铝是生态系统中无处不在的金属,在医学和生物学领域都发挥着重要作用,但人类的日常生活正受到其各种有害影响的严重威胁。因此,通过 快速灵敏和选择性识别方法跟踪铝的含量非常重要。基于此,新型荧光化学传感器4,4'-(propane-2,2-diyl)bis(2-(((-2-hydroxybenzylidene)hydrazineylidene)-methyl)phenol) (BFASA)能够识别Al 3+通过含双酚 A 的分子与水杨醛之间的简单席夫碱反应,在介质中构建。BFASA的金属结合研究显示显着增强的发射,颜色从无色变为绿色,确立了BFASA对监测 Al 3+和仅 Cu 2+ /Al 3+的效用,分别显着增强了探针溶液在 433 和 406 处的吸光度强度。它选择性地检测 Al 3+的能力证明了对 Al 3+的“开启”荧光响应,具有 0.56 μM 的低检测限 (LOD) 和良好的选择性以及
NOVEL BIS(FORMYLPHENYL)ALKANE AND NOVEL POLYNUCLEAR PHENOL DERIVED FROM THE SAME
申请人:Yoshitomo Akira
公开号:US20100016633A1
公开(公告)日:2010-01-21
Manufacture a novel bis(formylphenyl)alkane according to General Formula (1), as well as a novel polynuclear phenol derived therefrom, by causing a bis(hydroxymethyl-hydroxyphenyl)alkane to react with hexamethylene tetramine in the presence of an acid and hydrolyzing the reaction product, and then using the obtained bis(hydroxy-formylphenyl)alkane as a direct material and causing this material to react with halogenated alkoxycarbonyl hydrocarbon in the presence of a base.
Fast and Reversible “Turn on” Fluorescent Sensors Based on Bisphenol-a for Zn2+ in Aqueous Solution
作者:Begum Tabakci、Hayder Mahdi Ahmed Ahmed、Serkan Erdemir
DOI:10.1007/s10895-019-02419-8
日期:2019.9
Two novel bisphenol-A derivatives (R1 and R2) linked pyrene and napthylthiazole moieties were synthesized via condensation reaction, and positively applied for the selective recognition of Zn2+ ion in EtOH/H2O. Their optical properties were observed by using UV-vis and fluorescence measurements. R1 and R2 exhibited high selectivity and sensitivity towards Zn2+ over other metal ions. This fluorescence selectivity may be owing to inhibited excited-state intramolecular proton transfer (ESIPT) and photoinduced electron transfer (PET). The fluorescence titration analysis indicated detection limits of R1 and R2 for Zn2+ at 17.5 nM and 0.94 μM, respectively. Moreover, R1 and R2 were successfully applied to the detection of Zn2+ with different concentrations in water samples.
Ratiometric sensing of sulfite/bisulfite ions and its applications in food samples and living cells
作者:Gomathi Asaithambi、Viswanathamurthi Periasamy
DOI:10.1016/j.jphotochem.2019.112214
日期:2020.2
The detection limit of DFIN and BPIN for sulfite ions were 1.8 nM and 2.1 nM which is lower than the maximum acceptable limit of sulfite ion in food samples by United States Environmental Protection Agency (USEPA). Furthermore, the novel ratiometric fluorescent sensors DFIN and BPIN could be used for recognition of sulfite ions in food samples in addition to living cells.
synthesized and its sensing behavior was tested towards various ionic species. The chemo-sensing behavior of BHMP has been established through absorption, fluorescence, NMR, and mass spectroscopic techniques. The probe BHMP selectively detects zincions over other metal ions and the resulting BHMP + Zn2+ ensemble serves as a secondary probe for the detection of pyrophosphate (PPi) anion specifically over