A water-soluble AIE-gen for organic-solvent-free detection and wash-free imaging of Al3+ ions and subsequent sensing of F− ions and DNA tracking

2019 ◽  
Vol 43 (13) ◽  
pp. 5219-5227 ◽  
Author(s):  
Sharanabasava D. Hiremath ◽  
Ram U. Gawas ◽  
Starlaine C. Mascarenhas ◽  
Anasuya Ganguly ◽  
Mainak Banerjee ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Cell Imaging ◽  
Free Cell ◽  
Solvent Free ◽  
Water Soluble

A water-soluble TPE-based AIEgen (TPE-diBuS) was developed for organic-solvent-free detection of Al3+ ions and its wash-free cell imaging. The TPE-diBuS-Al ensemble was used for the detection of F− ions and DNA tracking.

scholarly journals Green Organic Solvent-Free Oxidation of Alkylarenes with tert-Butyl Hydroperoxide Catalyzed by Water-Soluble Copper Complex

2020 ◽  
Vol 18 (1) ◽  
pp. 165-174 ◽  
Author(s):  
Abdelaziz Nait Ajjou ◽  
Ateeq Rahman
Keyword(s):  
Organic Solvent ◽  
Catalytic System ◽  
Solvent Free ◽  
Water Soluble ◽  
Catalytic Systems ◽  
Butyl Hydroperoxide ◽  
Benzylic Alcohols ◽  
Tert Butyl Hydroperoxide ◽  
Solvent Free Conditions ◽  
High Yields

AbstractDifferent benzylic compounds were efficiently oxidized to the corresponding ketones with aqueous 70% tert-butyl hydroperoxide (TBHP) and the catalytic system composed of CuCl2.2H2O and 2,2’-biquinoline-4,4’-dicarboxylic acid dipotassium salt (BQC). The catalytic system CuCl2/BQC/TBHP allows obtaining high yields at room temperature under organic solvent-free conditions. The interest of this system lies in its cost effectiveness and its benign nature towards the environment. Benzylic tertbutylperoxy ethers and benzylic alcohols were observed and suggested as the reaction intermediates. Analysis of organic products by atomic absorption did not show any contamination with copper metal. In terms of efficiency, CuCl2/BQC system is comparable or superior to the most of the catalytic systems described in the literature and which are based on toxic organic solvent.

Dual crosslinked polyamidoxime/alginate sponge for robust and efficient uranium adsorption from aqueous solution

2020 ◽  
Vol 44 (45) ◽  
pp. 19445-19449
Author(s):  
Caina Han ◽  
Yaru Yue ◽  
Xin Xu ◽  
Dong Cai ◽  
Zhongjie Liu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Organic Solvent ◽  
Low Cost ◽  
Solvent Free ◽  
Water Soluble ◽  
Uranium Adsorption ◽  
Highly Efficient ◽  
Efficient Extraction ◽  
Uranium From Seawater

A facile, low-cost, organic solvent-free fabrication strategy is developed to prepare a seawater-stable sponge adsorbent from a water-soluble precursor for highly efficient extraction of uranium from seawater and uranium-containing wastewater.

Organic Solvent-Free Reworkable Photocrosslinking System

2007 ◽  
Vol 2 (2) ◽  
pp. 303-306
Author(s):  
Haruyuki Okamura ◽  
Yoshimi Tajima ◽  
Tadahiro Ohba ◽  
Kanji Suyama ◽  
Masamitsu Shirai
Keyword(s):  
Organic Solvent ◽  
Solvent Free

Nitrogen and Sulfur Co-doped Fluorescent Carbon Dots for the Detection of Morin and Cell Imaging

2018 ◽  
Vol 15 (1) ◽  
pp. 47-55
Author(s):  
Xuebing Li ◽  
Haifen Yang ◽  
Ning Wang ◽  
Tijian Sun ◽  
Wei Bian ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Fluorescent Probe ◽  
Fluorescence Intensity ◽  
Carbon Dots ◽  
Cell Imaging ◽  
Water Soluble ◽  
Heating Process ◽  
X Ray ◽  
Doped Carbon Dots ◽  
Co Doped

Background: Morin has many pharmacological functions including antioxidant, anticancer, anti-inflammatory, and antibacterial effects. It is commonly used in the treatment of antiviral infection, gastropathy, coronary heart disease and hepatitis B in clinic. However, researches have shown that morin is likely to show prooxidative effects on the cells when the amount of treatment is at high dose, leading to the decrease of intracellular ATP levels and the increase of necrosis process. Therefore, it is necessary to determine the concentration of morin in biologic samples. Method: Novel water-soluble and green nitrogen and sulfur co-doped carbon dots (NSCDs) were prepared by a microwave heating process with citric acid and L-cysteine. The fluorescence spectra were collected at an excitation wavelength of 350 nm when solutions of NSCDs were mixed with various concentrations of morin. Results: The as-prepared NSCDs were characterized by transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The fluorescence intensity of NSCDs decreased significantly with the increase of morin concentration. The fluorescence intensity of NSCDs displayed a linear response to morin in the concentration 0.10-30 μM with a low detection limit of 56 nM. The proposed fluorescent probe was applied to analysis of morin in human body fluids with recoveries of 98.0-102%. Conclusion: NSCDs were prepared by a microwave heating process. The present analytical method is sensitive to morin. The quenching process between NSCDs and morin is attributed to the static quenching. In addition, the cellular toxicity on HeLa cells indicated that the as-prepared NSCDs fluorescent probe does not show obvious cytotoxicity in cell imaging. Our proposed method possibly opens up a rapid and nontoxic way for preparing heteroatom doped carbon dots with a broad application prospect.

Ultrasonic cavitation driven fabrication of organic solvent free lignin/prochloraz nano capsules to promote resistance to photolysis and rain wash, and provide extended release performance

Holzforschung ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jingtian Chen ◽  
Miao Wang ◽  
Yong Qian ◽  
Shanyuan Tan ◽  
Huan Wang ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Uv Irradiation ◽  
Encapsulation Efficiency ◽  
Extended Release ◽  
Ultrasonic Cavitation ◽  
Solvent Free ◽  
Loading Capacity ◽  
One Pot ◽  
Continuous Release ◽  
Mango Leaves

Abstract Lignin is a natural macromolecular sun blocker and provides an ideal protection material for pesticides that have poor photostability. In this study, alkali lignin/prochloraz capsules (AL-P) were prepared via one-pot ultrasonic cavitation. The results demonstrated that the produced AL-P were uniform spheres with sizes of 170–375 nm. The prochloraz encapsulation efficiency (EE) and loading capacity (LC) reached as high as 91.8 and 98.5%, respectively. Adding a small of surfactant reduced the size of the capsules, but both EE and LC were decreased. AL-P exhibited excellent extended release performance. The cumulative release of AL-P in the first 45 h was 76.1% and continuous release was maintained after 96 h. The resulting AL-P have improved photostability under UV irradiation radiation. Finally, AL-P capsules were sprayed on the mango leaves and bananas to act as preservatives, AL-P capsules had stronger rain wash resistance and were better preserved demonstrating their industrial applicability. Together, organic solvent free AL-P capsules demonstrate a method to improve the efficiency of photosensitive pesticides.

Organic Solvent-Free Preparation of Chitosan Nanofibers with High Specific Surface Charge and Their Application in Biomaterials

2021 ◽  
Vol 13 (10) ◽  
pp. 12347-12358
Author(s):  
Sihan Zhang ◽  
Guanglei Zhao ◽  
Jiming Wang ◽  
Chong Xie ◽  
Wenquan Liang ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Specific Surface ◽  
Surface Charge ◽  
Solvent Free

One-step, ultrasonication-mobilized, solvent-free extraction/synthesis of nanocurcumin from turmeric

RSC Advances ◽  
2015 ◽  
Vol 5 (60) ◽  
pp. 48391-48398 ◽  
Author(s):  
Judy Gopal ◽  
Manikandan Muthu ◽  
Se-Chul Chun
Keyword(s):  
Solvent Free ◽  
Water Soluble ◽  
One Step

One step ultrasonication for direct recovery of water soluble nanocurcumin from turmeric.

Organic-solvent-free electromembrane extraction based on semi-interpenetrating polymer networks

2021 ◽  
Author(s):  
Hang Mei ◽  
Huajing Liu ◽  
Qianqian Shang ◽  
Ying Dong ◽  
Stig Pedersen-Bjergaard ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Polymer Networks ◽  
Interpenetrating Polymer Networks ◽  
Solvent Free ◽  
Electromembrane Extraction ◽  
Acidic Analytes

A versatile organic-solvent-free electromembrane extraction (EME) system, which could be successfully used for the extraction of both basic and acidic analytes, is proposed based on semi-interpenetrating polymer networks.

Facile fractionation of bamboo hydrolysate and characterization of isolated lignin and lignin-carbohydrate complexes

Holzforschung ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Xiaodi Wang ◽  
Yongchao Zhang ◽  
Luyao Wang ◽  
Xiaoju Wang ◽  
Qingxi Hou ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Organic Solvent ◽  
Extraction Process ◽  
Water Soluble ◽  
Organic Solvent Extraction ◽  
Glycoside Linkage ◽  
Potential Applications ◽  
Tremendous Amount ◽  
Main Components ◽  
Hemicellulosic Sugars

AbstractAn efficient separation technology for hydrolysates towards a full valorization of bamboo is still a tough challenge, especially regarding the lignin and lignin-carbohydrate complexes (LCCs). The present study aimed to develop a facile approach using organic solvent extraction for efficiently fractionating the main components of bamboo hydrolysates. The high-purity lignin with only a trace of carbohydrates was first obtained by precipitation of the bamboo hydrolysate. The water-soluble lignin (WSL) fraction was extracted in organic solvent through a three-stage organic solvent extraction process, and the hemicellulosic sugars with increased purity were also collected. Furthermore, a thorough characterization including various NMR techniques (31P, 13C, and 2D-HSQC), GPC, and GC-MS was conducted to the obtained lignin-rich-fractions. It was found that the WSL fraction contained abundant functional groups and tremendous amount of LCC structures. As compared to native LCC of bamboo, the WSL fraction exhibited more typical LCC linkages, i.e. phenyl glycoside linkage, which is the main type of chemical linkage between lignin and carbohydrate in both LCC samples. The results demonstrate that organic phase extraction is a highly efficient protocol for the fractionation of hydrolysate and the isolation of LCC-rich streams possessing great potential applications.

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