Preparation of a temperature-responsive block copolymer-anchored graphene oxide@ZnS NPs luminescent nanocomposite for selective detection of 2,4,6-trinitrotoluene

2018 ◽  
Vol 42 (12) ◽  
pp. 9598-9605 ◽  
Author(s):  
Yajiao Song ◽  
Haichao Duan ◽  
Siyao Zhu ◽  
Jianhua Lü ◽  
Changli Lü
Keyword(s):  
Graphene Oxide ◽  
Block Copolymer ◽  
Selective Detection ◽  
Stacking Interaction ◽  
Fluorescent Sensing ◽  
Temperature Responsive ◽  
Π Stacking ◽  
Sensing Platform ◽  
Π Stacking Interaction

Thermo-sensitive block copolymer decorated GO@ZnS NPs nanocomposite was constructed via π–π stacking interaction as a robust fluorescent sensing platform for the selective detection of TNT.

Temperature responsive polymer brushes grafted from graphene oxide: an efficient fluorescent sensing platform for 2,4,6-trinitrophenol

2016 ◽  
Vol 4 (29) ◽  
pp. 7083-7092 ◽  
Author(s):  
Yajiao Song ◽  
Jianhua Lü ◽  
Bingxin Liu ◽  
Changli Lü
Keyword(s):  
Graphene Oxide ◽  
Polymer Brushes ◽  
Raft Polymerization ◽  
Selective Detection ◽  
Fluorescent Sensing ◽  
Temperature Responsive ◽  
Sensing Platform ◽  
Responsive Polymer ◽  
Responsive Behavior ◽  
Copolymer Brushes

The block copolymer brushes of PNIPAM-b-P(MQ-co-GMA) were grafted from GO by RAFT polymerization. The resulting luminescent hybrid containing Alq3exhibited a robust temperature-responsive behavior and could be used as a nano-platform for the sensitive and selective detection of TNP.

Direct supramolecular interacted graphene oxide assembly on graphene as an active and defect-free functional platform

2017 ◽  
Vol 53 (12) ◽  
pp. 1949-1952 ◽  
Author(s):  
Peng Xiao ◽  
Nianxiang Qiu ◽  
Jincui Gu ◽  
Shuai Wang ◽  
Jiang He ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Microcontact Printing ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Stacking Interaction ◽  
Layer Graphene ◽  
Π Stacking ◽  
Π Stacking Interaction ◽  
Non Destructive

Graphene oxide (GO) is employed to have a non-destructive and selectively asymmetrical activation of single layer graphene via microcontact-printing induced π–π stacking interaction.

scholarly journals Graphene Oxide Membrane Immobilized Aptamer as a Highly Selective Hormone Removal

Membranes ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 229 ◽  
Author(s):  
Siham Chergui ◽  
Khaled Rhili ◽  
Sujittra Poorahong ◽  
Mohamed Siaj
Keyword(s):  
Graphene Oxide ◽  
Three Dimensional ◽  
High Sensitivity ◽  
Stacking Interaction ◽  
Π Stacking ◽  
Reduced Graphene ◽  
Oxide Concentration ◽  
Selective Membrane ◽  
Π Stacking Interaction ◽  
Hormone Analogs

Three-dimensional (3D) reduced graphene oxide (rGO) modified by polyethyleneimine (PEI) was prepared and functionalized by fluorophore-labeled dexamethasone-aptamer (Flu-DEX-apt) via π–π stacking interaction. The rGO/PEI/Flu-DEX-apt was used as a selective membrane for dexamethasone hormone removal from water. The prepared rGO/PEI/Flu-DEX-apt membranes were stable, insoluble, and easily removable from liquid media. The membrane was characterized by Raman spectroscopy, scanning electron spectroscopy, and FTIR spectroscopy. The rGO/PEI/Flu-DEX-apt membrane showed high sensitivity and specificity toward the dexamethasone hormone in the presence of other steroid hormone analogs, such as progesterone, estrone, estradiol, and 19-norethindrone. The fluorescence and UV–visible spectroscopy were used to confirm the membranes performance and the quantification of hormones removal. The resulting data clearly show that the graphene oxide concentration influence the aptamers and analytes interaction (π–π stacking interaction). It was found that by varying the graphene oxide concentration yields to different porosities of rGO/PEI/Flu-DEX-apt membranes affects the adsorption recovery rate, as well as the specificity and selectivity toward the dexamethasone hormone.

Non-covalent hydrophilization of reduced graphene oxide used as a paclitaxel vehicle

RSC Advances ◽  
2016 ◽  
Vol 6 (36) ◽  
pp. 30184-30193 ◽  
Author(s):  
Yu Liu ◽  
Han Zhong ◽  
Yu Qin ◽  
Yan Zhang ◽  
Xinfeng Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Stacking Interaction ◽  
Water Dispersible ◽  
Π Stacking ◽  
Reduced Graphene ◽  
Π Stacking Interaction

Phosphorylcholine oligomer grafted perylene (Perylene-PCn) was synthesized. By π–π stacking interaction of reduced graphene oxide (RGO) and perylene moiety, water dispersible RGO/Perylene-PCn composites were prepared and used as paclitaxel vehicle.

Synthesis and characterization of a linked, π-π stacked organotin compound of 2-mercapto-6-nitrobenzothiazolyl diphenyltin chloride with 2-ethoxyl-6-nitrobenzothiazole

2003 ◽  
Vol 81 (7) ◽  
pp. 825-831 ◽  
Author(s):  
Chunlin Ma ◽  
Qin Jiang ◽  
Rufen Zhang
Keyword(s):  
Title Compound ◽  
Organotin Compound ◽  
X Ray Diffraction ◽  
X Ray ◽  
Stacking Interaction ◽  
X Ray Crystallography ◽  
H Nmr ◽  
Π Stacking ◽  
Π Stacking Interaction ◽  
Molecular Components

The new organotin compound, Ph2Sn(Cl)[S(C7H3N2O2S)]·[(C7H3N2O2S)OEt], assembled by an intermolecular aromatic benzothiazole–benzothiazole π-π stacking interaction, has been synthesized by the reaction of diphenyltin dichloride with 2-mercapto-6-nitrobenzothiazole. The title compound was characterized by elemental, IR, 1H NMR, and X-ray crystallography analyses. Single-crystal X-ray diffraction data reveals that the title compound has two different molecular components. The component Ph2Sn(Cl)[S(C7H3N2O2S)] has a pentacoordinate tin, which further forms an infinite one-dimensional chain by intermolecular non-bonded Cl···S interactions, resulting in an intercalation lattice that holds (C7H3N2O2S)OEt molecules. The formation of the molecule (C7H3N2O2S)OEt as well as its intercalated mechanism has also been discussed.Key words: organotin, assemble, π-π stacking interaction, 2-mercapto-6-nitrobenzothiazole, non-bonded interaction, crystal structure.

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