scholarly journals The construction of a two-dimensional supramolecular organic framework with parallelogram pores and stepwise fluorescence enhancement

2015 ◽  
Vol 51 (91) ◽  
pp. 16417-16420 ◽  
Author(s):  
Shun-Qi Xu ◽  
Xiang Zhang ◽  
Cheng-Bin Nie ◽  
Zhong-Fu Pang ◽  
Xiao-Na Xu ◽  
...  
Keyword(s):  
Fluorescence Enhancement ◽  
Fluorescence Emission ◽  
Single Layer ◽  
Two Dimensional ◽  
Emission Enhancement ◽  
Organic Framework

A novel single-layer two-dimensional (2D) supramolecular organic framework (SOF) with parallelogram pores has been assembled and a stepwise fluorescence emission enhancement was observed.

scholarly journals Fluorescence enhancement through the formation of a single-layer two-dimensional supramolecular organic framework and its application in highly selective recognition of picric acid

2016 ◽  
Vol 52 (48) ◽  
pp. 7588-7591 ◽  
Author(s):  
Ying Zhang ◽  
Tian-Guang Zhan ◽  
Tian-You Zhou ◽  
Qiao-Yan Qi ◽  
Xiao-Na Xu ◽  
...  
Keyword(s):  
High Selectivity ◽  
Fluorescence Enhancement ◽  
Picric Acid ◽  
Single Layer ◽  
Fluorescent Chemosensor ◽  
Selective Recognition ◽  
Two Dimensional ◽  
Organic Framework

A novel two-dimensional (2D) supramolecular organic framework (SOF) has been assembled, which was further used as a fluorescent chemosensor to detect picric acid with high selectivity and sensitivity.

Fluorescence enhancement novel green analytical method for paraquat herbicide quantification based on immobilization on clay

The Analyst ◽  
2019 ◽  
Vol 144 (10) ◽  
pp. 3357-3363 ◽  
Author(s):  
Marina A. Dominguez ◽  
Matías Insausti ◽  
Romina Ilari ◽  
Graciela P. Zanini
Keyword(s):  
Analytical Method ◽  
Fluorescence Enhancement ◽  
Fluorescence Emission ◽  
Promising Tool ◽  
Emission Enhancement

Fluorescence emission enhancement by adsorption as a promising tool for the development of future green sensors.

Toward a Single-Layer Two-Dimensional Honeycomb Supramolecular Organic Framework in Water

2013 ◽  
Vol 135 (47) ◽  
pp. 17913-17918 ◽  
Author(s):  
Kang-Da Zhang ◽  
Jia Tian ◽  
David Hanifi ◽  
Yuebiao Zhang ◽  
Andrew Chi-Hau Sue ◽  
...  
Keyword(s):  
Single Layer ◽  
Two Dimensional ◽  
Organic Framework

A two-dimensional single-layer supramolecular organic framework that is driven by viologen radical cation dimerization and further promoted by cucurbit[8]uril

2014 ◽  
Vol 5 (16) ◽  
pp. 4715-4721 ◽  
Author(s):  
Liang Zhang ◽  
Tian-You Zhou ◽  
Jia Tian ◽  
Hui Wang ◽  
Dan-Wei Zhang ◽  
...  
Keyword(s):  
Radical Cation ◽  
Single Layer ◽  
Two Dimensional ◽  
Organic Framework

Without or with the assistance of CB[8], a triangular radical monomer can self-assemble into 2D supramolecular organic frameworks in water.

scholarly journals Emission Enhancement of Fluorescent Molecules by Antireflective Arrays

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Hongbo Xu ◽  
Lingxiao Liu ◽  
Fei Teng ◽  
Nan Lu
Keyword(s):  
Energy Dissipation ◽  
Fluorescence Enhancement ◽  
Fluorescence Emission ◽  
Effective Strategy ◽  
Emission Enhancement ◽  
New Strategy ◽  
Fluorescent Molecules

Traditional fluorescence enhancement based on a match of the maximum excitation or emission of fluorescence molecule with the spectra of the nanostructure can hardly enhance blue and red fluorescent molecules. Here, an enhanced method which is a new strategy based on the antireflective array has been developed to enhance the emission of blue and red fluorescent molecules. The fluorescence emission is enhanced by increasing the absorption at excitation wavelengths of the fluorescent molecules and reducing the fluorescent energy dissipation with an antireflective array. By introducing the antireflective arrays, the emission enhancement of blue and red fluorescent molecules is, respectively, up to 14 and 18 fold. It is a universal and effective strategy for enhancing fluorescence emission, which could be applied to enhance the intensity of organic LED and imaging.

High-temperature driven inter-valley carrier transfer and significant fluorescence enhancement in multilayer WS2

2018 ◽  
Vol 3 (6) ◽  
pp. 598-605 ◽  
Author(s):  
Heyu Chen ◽  
Yuanzheng Li ◽  
Weizhen Liu ◽  
Haiyang Xu ◽  
Guochun Yang ◽  
...  
Keyword(s):  
High Temperature ◽  
Transfer Process ◽  
Fluorescence Enhancement ◽  
Fluorescence Emission ◽  
Carrier Transfer ◽  
Emission Enhancement

A high-temperature driven carrier transfer process of multilayer WS2 is proposed and demonstrated for significant fluorescence emission enhancement.

The Difference in Sensing Properties Towards Anions between Two Pyridinium Amide-Based Receptors with a Subtle Change of H-Bond Position

2020 ◽  
Vol 17 (6) ◽  
pp. 472-478
Author(s):  
Wei-tao Gong ◽  
Wei-dong Qu ◽  
Guiling Ning
Keyword(s):  
Fluorescence Enhancement ◽  
Small Difference ◽  
Fluorescence Emission ◽  
Subtle Change ◽  
Sensing Properties ◽  
Naked Eye ◽  
Recognition Ability ◽  
The Difference ◽  
L1 And L2

Two pyridinium amide-based receptors L1 and L2 with a small difference of H-bond position of the amide have been synthesized and characterized. Interestingly, they exhibited a huge difference in sensing towards AcO- and H2PO4 -, respectively. Receptor L1 was found to be ‘naked-eye’ selective for AcO- anions, while receptor L2 showed clear fluorescence enhancement selective to H2PO4 - anion. The recognition ability has been established by fluorescence emission, UV-vis spectra, and 1HNMR titration.

Synthesis and Structure of a Clathrated Two-Dimensional Metal-Organic Framework: [Cd(4,4'-bpy)2(H2O)2](ClO4)2·(L)2·H2O (L = Bis(1-pyrazinylethylidene)hydrazine)

2008 ◽  
Vol 73 (1) ◽  
pp. 24-31
Author(s):  
Dayu Wu ◽  
Genhua Wu ◽  
Wei Huang ◽  
Zhuqing Wang
Keyword(s):  
Metal Organic Framework ◽  
Channel Structure ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Guest Molecules ◽  
X Ray ◽  
Square Planar ◽  
Metal Organic ◽  
Aqueous Meoh ◽  
Organic Framework

The compound [Cd(4,4'-bpy)2(H2O)2](ClO4)2·(L)2 was obtained by the reaction of Cd(ClO4)2, bis(1-pyrazinylethylidene)hydrazine (L) and 4,4'-bipyridine in aqueous MeOH. Single-crystal X-ray diffraction has revealed its two-dimensional metal-organic framework. The 2-D layers superpose on each other, giving a channel structure. The square planar grids consist of two pairs of shared edges with Cd(II) ion and a 4,4'-bipyridine molecule each vertex and side, respectively. The square cavity has a dimension of 11.817 × 11.781 Å. Two guest molecules of bis(1-pyrazinylethylidene)hydrazine are clathrated in every hydrophobic host cavity, being further stabilized by π-π stacking and hydrogen bonding. The results suggest that the hydrazine molecules present in the network serve as structure-directing templates in the formation of crystal structures.

Two-Dimensional Metal–Organic Framework Nanosheets as an Enzyme Inhibitor: Modulation of the α-Chymotrypsin Activity

2017 ◽  
Vol 139 (24) ◽  
pp. 8312-8319 ◽  
Author(s):  
Ming Xu ◽  
Shuai Yuan ◽  
Xin-Yu Chen ◽  
Yu-Jie Chang ◽  
Gregory Day ◽  
...  
Keyword(s):  
Enzyme Inhibitor ◽  
Metal Organic Framework ◽  
Two Dimensional ◽  
Chymotrypsin Activity ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Homogeneous 2D and 3D alignment of cardiomyocyte in dilated cardiomyopathy revealed by intravital heart imaging

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kiyoshi Masuyama ◽  
Tomoaki Higo ◽  
Jong-Kook Lee ◽  
Ryohei Matsuura ◽  
Ian Jones ◽  
...  
Keyword(s):  
Heart Failure ◽  
Dilated Cardiomyopathy ◽  
Cardiac Dysfunction ◽  
Three Dimensional ◽  
Single Layer ◽  
Specific Pattern ◽  
Two Dimensional ◽  
Heart Imaging ◽  
Novel Method ◽  
2D And 3D

AbstractIn contrast to hypertrophic cardiomyopathy, there has been reported no specific pattern of cardiomyocyte array in dilated cardiomyopathy (DCM), partially because lack of alignment assessment in a three-dimensional (3D) manner. Here we have established a novel method to evaluate cardiomyocyte alignment in 3D using intravital heart imaging and demonstrated homogeneous alignment in DCM mice. Whilst cardiomyocytes of control mice changed their alignment by every layer in 3D and position twistedly even in a single layer, termed myocyte twist, cardiomyocytes of DCM mice aligned homogeneously both in two-dimensional (2D) and in 3D and lost myocyte twist. Manipulation of cultured cardiomyocyte toward homogeneously aligned increased their contractility, suggesting that homogeneous alignment in DCM mice is due to a sort of alignment remodelling as a way to compensate cardiac dysfunction. Our findings provide the first intravital evidence of cardiomyocyte alignment and will bring new insights into understanding the mechanism of heart failure.

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