An aggregation-induced emission star polymer with pH and metal ion responsive fluorescence

2016 ◽  
Vol 7 (42) ◽  
pp. 6513-6520 ◽  
Author(s):  
Yuming Zhao ◽  
Wen Zhu ◽  
Ying Wu ◽  
Lin Qu ◽  
Zhengping Liu ◽  
...  
Keyword(s):  
Metal Ions ◽  
Ring Opening ◽  
Metal Ion ◽  
Star Polymers ◽  
Star Polymer ◽  
One Pot ◽  
Active Star ◽  
Metathesis Polymerization ◽  
Aggregation Induced Emission ◽  
Emission Star

A one-pot strategy from ring-opening metathesis polymerization was employed to prepare AIE-active star polymers, which were designed to have multi-responsive fluorescence to varied stimuli including pH, CO2, and metal ions.

One-Pot Tandem Ring-Opening and Ring-Closing Metathesis Polymerization of Disubstituted Cyclopentenes Featuring a Terminal Alkyne Functionality

2020 ◽  
Vol 53 (11) ◽  
pp. 4330-4337
Author(s):  
Santhosh Kumar Podiyanachari ◽  
Salvador Moncho ◽  
Edward N. Brothers ◽  
Saeed Al-Meer ◽  
Mohammed Al-Hashimi ◽  
...  
Keyword(s):  
Ring Opening ◽  
Terminal Alkyne ◽  
Ring Closing Metathesis ◽  
One Pot ◽  
Metathesis Polymerization

scholarly journals A multicolor and ratiometric fluorescent sensing platform for metal ions based on arene–metal-ion contact

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Anna Kanegae ◽  
Yusuke Takata ◽  
Ippei Takashima ◽  
Shohei Uchinomiya ◽  
Ryosuke Kawagoe ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Near Infrared ◽  
Molecular Design ◽  
Theoretical Calculations ◽  
Probe Design ◽  
One Pot ◽  
Fluorescent Sensing ◽  
Sensing Platform ◽  
Ratiometric Detection

AbstractDespite continuous and active development of fluorescent metal-ion probes, their molecular design for ratiometric detection is restricted by the limited choice of available sensing mechanisms. Here we present a multicolor and ratiometric fluorescent sensing platform for metal ions based on the interaction between the metal ion and the aromatic ring of a fluorophore (arene–metal-ion, AM, coordination). Our molecular design provided the probes possessing a 1,9-bis(2′-pyridyl)-2,5,8-triazanonane as a flexible metal ion binding unit attached to a tricyclic fluorophore. This architecture allows to sense various metal ions, such as Zn(II), Cu(II), Cd(II), Ag(I), and Hg(II) with emission red-shifts. We showed that this probe design is applicable to a series of tricyclic fluorophores, which allow ratiometric detection of the metal ions from the blue to the near-infrared wavelengths. X-ray crystallography and theoretical calculations indicate that the coordinated metal ion has van der Waals contact with the fluorophore, perturbing the dye’s electronic structure and ring conformation to induce the emission red-shift. A set of the probes was useful for the differential sensing of eight metal ions in a one-pot single titration via principal component analysis. We also demonstrate that a xanthene fluorophore is applicable to the ratiometric imaging of metal ions under live-cell conditions.

One-pot synthesis of N-substituted-3-hydroxy-4-pyridinone chelate complexes of aluminum, gallium, and indium

1989 ◽  
Vol 67 (11) ◽  
pp. 1708-1710 ◽  
Author(s):  
Zaihui Zhang ◽  
T. L. Thomas Hui ◽  
Chris Orvig
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Nucleophilic Attack ◽  
Electronic Effects ◽  
One Pot ◽  
Group 13 ◽  
Pyrone Ring ◽  
One Pot Synthesis ◽  
Ring Nitrogen ◽  
Ring Nitrogen Atom

A series of tris(3-hydroxy-2-methyl-4-pyridinonato)metal(III) and tris(3-hydroxy-6-hydroxymethyl-4-pyridinonato)metal(III) complexes have been prepared in water by one-pot synthesis directly from maltol and kojic acid, respectively, and the metal ion (M = Al, Ga, In) with an appropriate amine. The pyridinones have substituents at the ring nitrogen atom (CH3, C2H5). The tris(3-hydroxy-4-pyronato)metal(III) complexes are formed insitu and these undergo nucleophilic attack by the primary amine; the appropriate tris(3-hydroxy-4-pyridinonato)metal(III) complexes are obtained. This method bypasses the sequential syntheses of ligand and metal complex, and has improved the yields of the tris(ligand)metal complexes, in particular by making them much more easily accessible. The electronic effects of binding the pyrone to the metal ions and of the substituents on the pyrone ring on the reactivity are discussed. Keywords: 3-hydroxy-4 pyridinone complexes, group 13 metal ions, one-pot synthesis.

scholarly journals Arene–Metal-Ion Contact: A Multicolor and Ratiometric Fluorescence Sensing Platform for Metal Ions

2020 ◽  
Author(s):  
Anna Kanegae ◽  
Yusuke Takata ◽  
Ippei Takashima ◽  
Shohei Uchinomiya ◽  
Ryosuke Kawagoe ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Near Infrared ◽  
Wavelength Region ◽  
Probe Design ◽  
Molecular Architecture ◽  
One Pot ◽  
Dual Emission ◽  
Sensing Platform ◽  
Ratiometric Detection

Abstract Despite continuous active development of fluorescent probes for metal-ions, their molecular design for ratiometric detection is limited owing to a narrow choice of available sensing mechanisms. We present herein a dual-emission sensing platform for metal ions based on contact interaction between a coordinated metal ion and the aromatic ring of a fluorophore (i.e., arene–metal-ion contact). Our structure-based ligand design provided a new probe possessing BPTN as the metal ion binding unit, which was flexibly concatenated to a tricyclic fluorophore. This molecular architecture allowed us to fluorescently sense various metal ions such as Zn(II), Cu(II), Cd(II), Ag(I), and Hg(II) with the red-shifted emissions. This probe design was applicable to a series of tricyclic fluorophores, enabling ratiometric detection of the metal ions across the blue to near-infrared wavelength region. X-ray crystallography and theoretical computational calculation indicated that the coordinated metal ion has van der Waals contact with the fluorophore, which perturbs its electronic structure and ring conformation to induce the emission red-shift. A set of the arene–metal-ion contact probes was used for the differential sensing of eight metal ions in a one-pot single titration via PCA analysis. Furthermore, the probe was applicable to the ratio imaging of metal ions under live-cell conditions.

Ring-opening metathesis polymerization-induced self-assembly (ROMPISA) of a cisplatin analogue for high drug-loaded nanoparticles

2019 ◽  
Vol 10 (23) ◽  
pp. 2996-3000 ◽  
Author(s):  
Daniel B. Wright ◽  
Maria T. Proetto ◽  
Mollie A. Touve ◽  
Nathan C. Gianneschi
Keyword(s):  
Aqueous Phase ◽  
Self Assembly ◽  
Ring Opening ◽  
Ring Opening Metathesis Polymerization ◽  
One Pot ◽  
Phase Synthesis ◽  
High Drug ◽  
Metathesis Polymerization ◽  
The One ◽  
Micellar Nanoparticles

We report the one-pot aqueous phase synthesis of cisplatin drug loaded micellar nanoparticles using Ring-Opening Metathesis Polymerization-Induced Self-Assembly (ROMPISA).

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