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[Sensors Actuators: B. Chem.] A water-soluble near-infrared (NIR) fluorescence activation probe for efficient detection of dissolved carbon dioxide
.A near-infrared (NIR)
fluorescent “turn-on” probe is presented for dissolved carbon dioxide (dCO2)
detection in aqueous medium. This
probe is based on perylene
bisimide-functionalized hyperbranched polyethylenimine (PBI-HPEI) polymer,
which exhibits typical NIR fluorescence
due to the excimer emission of π-π
stacked PBI fluorophores.
Both UV-Vis absorption and fluorescent spectroscopy studies...
http://www.polymer.cn//ss/chentaogroup/publicationsshow_10068.html |
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Ethanol modified supercritical carbon dioxide extraction of flavonoids from Momordica charantia L. and its antioxidant activity
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http://www.polymer.cn//ss/jhxiencu/publicationsshow_10053.html |
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Rational design of a novel indole-based microporous organic polymer: enhanced carbon dioxide uptake via local dipole–π interactions
An indole-based microporous organic polymer (PINK) has been obtained by the condensation polymerization of 1,3,5-tris-(4-fluorobenzoyl)benzene with 3,30-diindolylmethane via a catalyst-free nucleophilic substitution reaction. Due to the local dipole–p interactions between indole and carbon dioxide (CO2), the uptake capacity for CO2 reaches up to 16.0 wt% (1.0 bar, 273 K), and the high (CO2/N2),...
http://www.polymer.cn//ss/changguanjun/publicationsshow_9978.html |
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Room-temperature nitrogen -dioxide sensors based on ZnO1?x coatings deposited by solution precursor plasma spray
The stoichiometric ZnO has a bandgap greater than 2.6 eV and has no or weak response to visible light, which greatly suppresses its applications. We report here that a process of solution precursor plasma spray (SPPS) can effectively narrow the bandgap and extend the absorption of ZnO to visible light region, which mainly results from highly concentrated oxygen vacancies generated during SPPS proc...
http://www.polymer.cn//ss/zhangchao/publicationsshow_9925.html |
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Carbon dioxide adsorption on poly(vinylidene chloride)-based carbons with ultrahigh microporosities prepared by facile carbonization
Poly(vinylidene chloride) (PVDC)-based carbon with high microporosity was prepared via facile carbonization, and further moderate KOH activation can widen micropore size with higher surface area and larger pore volume. A superior CO2 capture uptake at 1 bar of up to 5.87 mmol/g at 0 °C and 3.98 mmol/g at 25 °C is obtained for pristine carbon and the isosteric heat of CO2 adsorption is in the ran...
http://www.polymer.cn//ss/zhaoxuebo/publicationsshow_9840.html |
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Copolymerization of Carbon Dioxide and Cyclohexene Oxide Catalyzed by Chromium Complexes Bearing Semirigid [ONSO]-Type Ligands
Chromium complexes supported by tetradentate dianionic imine-thioether-bridged bis(phenol) ligands were prepared and employed in the synthesis of poly(cyclohexene carbonate) via the copolymerization of CO2 and cyclohexene oxide. The catalytic activity, product selectivity, and kinetic behaviors of these [ONSO]CrIII complexes have been systematically investigated. Results indicate the presence of...
http://www.polymer.cn//ss/BinyuanLiu/publicationsshow_9318.html |
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Chromium complexes containing a tetradentate [OSSO]-type bisphenolate ligand as a novel family of catalysts for the copolymerization of carbon dioxide and 4-vinylcyclohexene oxide
This work reports the synthesis of polycarbonates from 4-vinylcyclohexene oxide (VCHO)/carbon dioxide copolymerization catalyzed by new homogeneous chromium complexes with an [OSSO]-type bis(phenolato) dianionic ligand. Through the structural design, the ethylene-bridged ligands of the chromium complex exhibit the highest activity with the same axial anion Cl. The catalytic activity and product ...
http://www.polymer.cn//ss/BinyuanLiu/publicationsshow_9316.html |
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Fixation of carbon dioxide concurrently or in tandem with free radical polymerization for highly transparent polyacrylates with specific UV absorption
It is still a challenging issue to combine the coupling reaction and free radical polymerization (FRP) for well-controlled and efficient synthesis of polyacrylates bearing the cyclic carbonate group from carbon dioxide (CO2) and vinyl epoxides. This work describes the efficient catalytic synthesis of poly(2-oxo-1,3-dioxolane-4-yl)methyl methacrylate (PDOMA) from CO2 and glycidyl methac...
http://www.polymer.cn//ss/xhzhang/publicationsshow_9291.html |
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Rigid linked Dinuclear Salph-co(III) catalyst for Carbon Dioxide/Epoxides Copolymerization
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http://www.polymer.cn//ss/gaobo/publicationsshow_9011.html |
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Synthesis of fully alternating polycarbonate with low Tg from carbon dioxide and bio-based fatty acid
The selective copolymerization of CO2 and an epoxide to form fully alternating polycarbonates is a great challenge via catalysis with the zinc–cobalt(III) double metal cyanide complex [Zn–Co(III) DMCC]. We describe the first perfectly alternating copolymerization of CO2 with a bio-based epoxide. The resultant polycarbonate had a low Tgs of 38 to 44 C and two end hydroxyl grou...
http://www.polymer.cn//ss/xhzhang/publicationsshow_8333.html |
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