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 ◽  
...  

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

The Analyst ◽  
2019 ◽  
Vol 144 (10) ◽  
pp. 3357-3363 ◽  
Author(s):  
Marina A. Dominguez ◽  
Matías Insausti ◽  
Romina Ilari ◽  
Graciela P. Zanini

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


2015 ◽  
Vol 51 (91) ◽  
pp. 16417-16420 ◽  
Author(s):  
Shun-Qi Xu ◽  
Xiang Zhang ◽  
Cheng-Bin Nie ◽  
Zhong-Fu Pang ◽  
Xiao-Na Xu ◽  
...  

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.


Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Hongbo Xu ◽  
Lingxiao Liu ◽  
Fei Teng ◽  
Nan Lu

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.


2020 ◽  
Vol 17 (6) ◽  
pp. 472-478
Author(s):  
Wei-tao Gong ◽  
Wei-dong Qu ◽  
Guiling Ning

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.


2020 ◽  
Vol 8 (44) ◽  
pp. 15622-15625
Author(s):  
Hao Guo ◽  
Xin Yan ◽  
Bing Lu ◽  
Jin Wang ◽  
Xiaolei Yuan ◽  
...  

Two-step sequential fluorescence emission enhanced supramolecular nanoparticles are constructed from pillar[5]arene based host–guest interaction and a linear amphiphile. These supramolecular nanoparticles can be applied in mitochondria-targeted live cell imaging.


2013 ◽  
Vol 634-638 ◽  
pp. 2462-2465
Author(s):  
Wen Xian Li ◽  
Bo Yang Ao ◽  
Jing Zhang

A novel ligand with double sulfinyl groups, bis(benzylsulfinyl)methane L, was synthesized by a new method. Its novel ternary complex, has been synthesized [using L as the first ligand, and dipyridyl L' as the second ligand]. In order to study the effect of the second ligand on the fluorescence properties of rare-earth sulfoxide complex, a novel binary europium complex has been synthesized. Photoluminescent measurement showed that the first ligand L could efficiently transfer the energy to Eu (III) ions in the complex. Furthermore, the detailed luminescence analyses on the rare earth complexes indicated that the ternary Eu (III) complex manifested stronger fluorescence intensities, longer lifetimes, and higher fluorescence quantum efficiencies than the binary Eu (III) materials. The fluorescence emission intensities and fluorescence lifetimes of the ternary complex enhanced more obviously than the binary complex.


2005 ◽  
Vol 22 (10) ◽  
pp. 2134 ◽  
Author(s):  
Tao Feng ◽  
Jianlin Shi ◽  
Jiyang Chen ◽  
Danyu Jiang

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