Tetraphenylethene decorated with disulfide-functionalized hyperbranched poly(amido amine)s as metal/organic solvent-free turn-on AIE probes for biothiol determination

2019 ◽  
Vol 7 (24) ◽  
pp. 3846-3855 ◽  
Author(s):  
Bin Wang ◽  
Cheng Li ◽  
Lijun Yang ◽  
Congrou Zhang ◽  
Li-Juan Liu ◽  
...  
Keyword(s):  
Organic Solvent ◽  
Solvent Free ◽  
Turn On ◽  
Hyperbranched Poly ◽  
Metal Organic

Novel hyperbranched poly(amido amine)s AIE probes were developed for organic solvent-free biothiol sensing.

scholarly journals Design of Engineered Cyclodextrin Derivatives for Spontaneous Coating of Highly Porous Metal-Organic Framework Nanoparticles in Aqueous Media

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1103 ◽  
Author(s):  
Cutrone ◽  
Li ◽  
Casas-Solvas ◽  
Menendez-Miranda ◽  
Qiu ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Organic Solvent ◽  
Metal Organic Framework ◽  
Aqueous Media ◽  
Mannose Receptor ◽  
Building Blocks ◽  
Solvent Free ◽  
Tetraethylene Glycol ◽  
Metal Organic ◽  
Highly Porous

Nanosized metal-organic frameworks (nanoMOFs) MIL-100(Fe) are highly porous and biodegradable materials that have emerged as promising drug nanocarriers. A challenging issue concerns their surface functionalization in order to evade the immune system and to provide molecular recognition ability, so that they can be used for specific targeting. A convenient method for their coating with tetraethylene glycol, polyethylene glycol, and mannose residues is reported herein. The method consists of the organic solvent-free self-assembly on the nanoMOFs of building blocks based on β-cyclodextrin facially derivatized with the referred functional moieties, and multiple phosphate groups to anchor to the nanoparticles’ surface. The coating of nanoMOFs with cyclodextrin phosphate without further functional groups led to a significant decrease of macrophage uptake, slightly improved by polyethylene glycol or mannose-containing cyclodextrin phosphate coating. More notably, nanoMOFs modified with tetraethylene glycol-containing cyclodextrin phosphate displayed the most efficient “stealth” effect. Mannose-coated nanoMOFs displayed a remarkably enhanced binding affinity towards a specific mannose receptor, such as Concanavalin A, due to the multivalent display of the monosaccharide, as well as reduced macrophage internalization. Coating with tetraethylente glycol of nanoMOFs after loading with doxorubicin is also described. Therefore, phosphorylated cyclodextrins offer a versatile platform to coat nanoMOFs in an organic solvent-free, one step manner, providing them with new biorecognition and/or “stealth” properties.

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

A Solvent Free Synthetic Route for Cerium(IV) Metal-Organic Frame-works with UiO-66 Architecture and Their Photocatalytic Application

2019 ◽  
Author(s):  
Matteo Campanelli ◽  
Tiziana Del Giacco ◽  
Filippo De Angelis ◽  
Edoardo Mosconi ◽  
Marco Taddei ◽  
...  
Keyword(s):  
Density Functional ◽  
Chemical Oxidation ◽  
Solvent Free ◽  
Cerium Ammonium Nitrate ◽  
Benzylic Alcohols ◽  
Near Ultraviolet ◽  
Photocatalytic Application ◽  
Activity Density ◽  
Ultraviolet Light Irradiation ◽  
Metal Organic

<div> <p>A novel solvent-free synthesis for Ce-UiO-66 metal-organic frameworks (MOFs) is presented. The MOFs are obtained by simply grinding the reagents, cerium ammonium nitrate (CAN) and the carboxylic linkers, in a mortar for few minutes with the addition of a small amount of acetic acid (AcOH) as modulator (1.75 eq, o.1 ml). The slurry is then transferred into a 1 ml vial and heated at 120°C for 1 day. The MOFs have been characterized for their composition, crystallinity and porosity and employed as heterogenous catalysts for the photo-oxidation reaction of substituted benzylic alcohols to benzaldaldehydes under near ultraviolet light irradiation. The catalytic performances, such as yield, conversion and kinetics, exceed those of similar systems studied by chemical oxidation and using Ce-MOF as catalyst. Moreover, the MOFs were found to be reusable up to three cycles without loss of activity. Density functional theory (DFT) calculations gave an estimation of the band-gap shift due to the different nature of the linkers used and provide useful information on the catalytic activity experimentally observed.</p> </div>

A direct solvent-free conversion approach to prepare mixed-metal metal–organic frameworks from doped metal oxides

2021 ◽  
Vol 57 (29) ◽  
pp. 3587-3590
Author(s):  
Beili Yi ◽  
Haojie Zhao ◽  
Yue Zhang ◽  
Xiaomeng Si ◽  
Guanqun Zhang ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Metal Organic Frameworks ◽  
Solvent Free ◽  
Mixed Metal ◽  
Synthesis Strategy ◽  
Metal Metal ◽  
Metal Organic

We propose a novel solvent-free conversion strategy of Pt–ZnO to Pt-ZIF-8. This synthesis strategy may facilitate the discovery of MMOFs that have not been reported previously.

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.

N-Functionality Actuated Largely Improved CO2 Adsorption and Nanomolar Turn-on Detection of Organo-Toxins with Guest-Induced Fluorescence Modulation in Isostructural Diamondoid Frameworks

2021 ◽  
Author(s):  
Manpreet Singh ◽  
Athulya S. Palakkal ◽  
Renjith S. Pillai ◽  
Subhadip Neogi
Keyword(s):  
Carbon Dioxide ◽  
Functional Group ◽  
Co2 Adsorption ◽  
Metal Organic Frameworks ◽  
Turn On ◽  
Metal Organic ◽  
Fluorescence Modulation

Metal-organic frameworks (MOFs) have surfaced as incipient class of multifaceted materials for selective carbon dioxide (CO2) adsorption and luminescent detection of assorted classes of lethal organo-aromatics, where functional group assisted...

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
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