Blue-red emitting 2,12-disubstituted [5]helicenes for high fluorescence efficiency and sensing application

2021 ◽  
Vol 411 ◽  
pp. 113203
Author(s):  
Yadagiri B. ◽  
Prem Jyoti Singh Rana ◽  
Surya Prakash Singh
Keyword(s):  
Fluorescence Efficiency ◽  
Sensing Application ◽  
High Fluorescence

A quantitative description of photoluminescence efficiency of a carbazole-based thermally activated delayed fluorescence emitter

2019 ◽  
Vol 43 (15) ◽  
pp. 6032-6039
Author(s):  
Songyan Feng ◽  
Xugeng Guo ◽  
Jinglai Zhang
Keyword(s):  
Quantitative Description ◽  
Energy Difference ◽  
Delayed Fluorescence ◽  
Intersystem Crossing ◽  
Small Energy ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Fluorescence Efficiency ◽  
High Fluorescence ◽  
Photoluminescence Efficiency

The present results reveal that the dominant charge transfer characteristics in the S1 and T1 states produce a small energy difference between the two states, and consequently an efficient reverse intersystem crossing process and a high fluorescence efficiency.

Non-symmetric 9,10-diphenylanthracene-based deep-blue emitters with enhanced charge transport properties

2014 ◽  
Vol 16 (15) ◽  
pp. 7089-7101 ◽  
Author(s):  
Tomas Serevičius ◽  
Regimantas Komskis ◽  
Povilas Adomėnas ◽  
Ona Adomėnienė ◽  
Vygintas Jankauskas ◽  
...  
Keyword(s):  
Charge Transport ◽  
Transport Properties ◽  
Deep Blue ◽  
Film Forming ◽  
Fluorescence Efficiency ◽  
High Carrier ◽  
Blue Emitters ◽  
High Fluorescence

Realization of 9,10-diphenylanthracene based deep-blue emitters exhibiting high fluorescence efficiency, demonstrating good film forming properties and high carrier drift mobilities is presented.

scholarly journals γ-Radiation Enhanced Luminescence of Thiol-Capped Quantum Dots in Aqueous Solution

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 506 ◽  
Author(s):  
Shuquan Chang ◽  
Xian Wu ◽  
Jianzhang Lan ◽  
Zheng Li ◽  
Xiaohong Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Quantum Dots ◽  
Photoelectron Spectroscopy ◽  
Fluorescence Emission ◽  
High Energy ◽  
Γ Radiation ◽  
X Ray ◽  
Fluorescence Efficiency ◽  
High Fluorescence ◽  
Xrd Patterns

Quantum dots (QDs) have attracted great attention due to their unique optical properties. High fluorescence efficiency is very important for their practical application. In this study, we report a simple and efficient strategy to enhance the photoluminescence of water-dispersed thiol-capped QDs using γ-radiation. Three kinds of QDs with different surface ligands and cores (MPA-CdTe, MPA-CdSe and Cys-CdTe) were fabricated and irradiated by high-energy γ-ray in an aqueous solution. Their photoluminescence intensities were significantly enhanced after irradiation, which were closely related to the radiation dose and the structure of QDs. The positions of the fluorescence emission peaks did not shift obviously after irradiation. The mechanism of photoluminescence enhancement was discussed based on the results of photoluminescence (PL) spectra, UV-visible light absorption (UV-vis) spectra, transmission electron microscope (TEM), X-ray diffraction (XRD) patterns, Fourier transform infrared (FT-IR) spectra and X-ray photoelectron spectroscopy (XPS). This method can be employed to uniformly treat large batches of QDs at room temperature and without other chemicals.

scholarly journals Designing highly fluorescent, arylated poly(phenylene vinylene)s of intrinsic microporosity

2020 ◽  
Vol 8 (7) ◽  
pp. 2248-2257
Author(s):  
Ana Clara B. Rodrigues ◽  
Isabell S. Geisler ◽  
Patrick Klein ◽  
João Pina ◽  
Fabian J. H. Neuhaus ◽  
...  
Keyword(s):  
Phenylene Vinylene ◽  
Fluorescence Efficiency ◽  
High Fluorescence ◽  
Intrinsic Microporosity

The design of new arylated poly(phenylene vinylene) with high fluorescence efficiency (from AIE) and intrinsic microporosity (from SBET) is described.

Highly-emissive solution-grown furan/phenylene co-oligomer single crystals

RSC Advances ◽  
2016 ◽  
Vol 6 (95) ◽  
pp. 92325-92329 ◽  
Author(s):  
Maxim S. Kazantsev ◽  
Ekaterina S. Frantseva ◽  
Liudmila G. Kudriashova ◽  
Vladislav G. Konstantinov ◽  
Artur A. Mannanov ◽  
...  
Keyword(s):  
Charge Transport ◽  
Transport Properties ◽  
Single Crystals ◽  
Fluorescence Efficiency ◽  
Efficient Charge ◽  
High Fluorescence

Solution-grown single crystals of furan/phenylene co-oligomer combine efficient charge transport properties and high fluorescence efficiency.

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