Facile synthesis of colloidal photoluminescent BiPO4:Ln (Eu,Tb) nanoparticles well-dispersed in polar solvents

CrystEngComm ◽  
2019 ◽  
Vol 21 (2) ◽  
pp. 278-282 ◽  
Author(s):  
Maozhan Huang ◽  
Zhou Xu ◽  
Cheng Hou ◽  
Hai-lang Jia ◽  
Jianhua Sun ◽  
...  
Keyword(s):  
Uv Irradiation ◽  
Facile Synthesis ◽  
Polar Solvents

Colloidal photoluminescence BiPO4:Ln (Eu,Tb) nanoparticles well-dispersed in polar solvents have been prepared, which exhibit organic-red and green colours under UV irradiation.

Facile synthesis of Ag/ZnO heterostructures assisted by UV irradiation: Highly photocatalytic property and enhanced photostability

2011 ◽  
Vol 46 (10) ◽  
pp. 1625-1631 ◽  
Author(s):  
Zhongmei Yang ◽  
Ping Zhang ◽  
Yanhuai Ding ◽  
Yong Jiang ◽  
Zhilin Long ◽  
...  
Keyword(s):  
Uv Irradiation ◽  
Photocatalytic Property ◽  
Facile Synthesis ◽  
Enhanced Photostability

Photo-Induced Fluorescence Enhancement of BOPIM–dma in Moderate Polar Solvents

2014 ◽  
Vol 488-489 ◽  
pp. 193-196
Author(s):  
Jin Dong Gong ◽  
Wei Zhang ◽  
Ping Shen ◽  
Ming Xun Yan ◽  
Chang Ying Yang
Keyword(s):  
Charge Transfer ◽  
Uv Irradiation ◽  
Emission Intensity ◽  
Fluorescence Enhancement ◽  
Polar Solvent ◽  
Intramolecular Charge Transfer ◽  
Fluorescence Emission ◽  
Polar Solvents ◽  
Quenching Process ◽  
Fluorescence Emission Intensity

The photo-induced fluorescence enhancement for a BOPIM derivate, which was found weak or no fluorescence in solvents due to twisted intramolecular charge transfer (TICT) was investigated. The quenching process because of TICT state is substantially removed and fluorescence emission intensity increased remarkably, induced by UV-irradiation. This phenomenon could only found in moderate polar solvent, such as CHCl3, THF and 1, 4-dioxane (DIOX), but not in more polarity solvent, such as CH3CN, CH3OH. It is indicated that the transformation from TICT to ICT state take place easily in moderate polar solvents.

Photophysical and Photochemical Properties of Polyurethane Coumarin Studied by Means of Electronic Spectra

2017 ◽  
Vol 68 (7) ◽  
pp. 1568-1572 ◽  
Author(s):  
Mitachi Strat ◽  
Emil Buruiana ◽  
Dan Dumitriu ◽  
Andrei Victor Sandu ◽  
Silviu Gurlui
Keyword(s):  
Uv Irradiation ◽  
Fluorescence Spectra ◽  
Fluorescence Emission ◽  
Dimethyl Formamide ◽  
Polar Solvents ◽  
Spectra Analysis ◽  
Photon Excitation ◽  
Exciting Beam ◽  
Photochemical Properties ◽  
Fluorescence Wavelength

The spectroscopic and photochemical properties of polyurethane coumarine (PUC) in dimethyl sulf-oxide (DMSO), thetra hydro furan (THF), dimethyl formamide (DMF) and film state were investigated at room temperature under one photon excitation. Photodimer products were formed via UV irradiation. Syn head-to-head and syn head-to-tail photodimers were formed under one-photon (broadband UV) irradiation in polar solvents. The spectral investigation of the photochemical products of PUC revealed efficient fluorescence emission in the spectral region 300�400 nm, attributed to the syn-head-to-tail dimers of PUC. The results show that under irradiation of l ] 310 nm photodimerization process are increased and under UV irradiation with l [ 260 nm, photocleavage degree have been evidenced, too. Fluorescence spectra analysis of PUC in polar and film-based solvents reveals another very important result. The 375nm fluorescence wavelength of the PUC (exciting beam 310 nm) is about 30 times more intense than the same maximum in THF and in DMF. This result indicates a new method to confirm that PUC film photodimerisation occurs especially at its surface.

Diazene sulphonate as a cross-linking agent for polymers with pendant triarylamine hole-conducting units

2016 ◽  
Vol 70 (9) ◽  
Author(s):  
Eva Baranovicova ◽  
Andrej Stasko ◽  
Oskar Nuyken
Keyword(s):  
Uv Irradiation ◽  
Aromatic Amines ◽  
Cross Linking ◽  
Polar Solvents ◽  
Light Emitting ◽  
Organic Light ◽  
Ionic Intermediates ◽  
Diazene Sulphonate

AbstractDiazene sulphonates are readily available compounds which are soluble in water and polar solvents. They strongly absorb the UV-VIS light and they decompose under UV irradiation via radical or ionic intermediates. These properties render them valuable, e.g. for analytical purposes and for photo-printing. In this presentation, it will be demonstrated that polymers with a pendant diazene sulphonate function as cross-linking agents and with pendant aromatic amines as hole-transporters can be considered as useful materials for organic light-emitting device (OLED) technology.

A Facile Synthesis of Cu/Ta@SBA composite for the degradation of Methyl Orange under UV irradiation

2016 ◽  
Vol 3 (6) ◽  
pp. 2501-2508 ◽  
Author(s):  
M.R. Madhusudhan ◽  
S.S. Prasath ◽  
K. Chennakesavulu ◽  
J. Sreeramulu
Keyword(s):  
Methyl Orange ◽  
Uv Irradiation ◽  
Facile Synthesis ◽  
Degradation Of Methyl Orange

scholarly journals Dispersible cobalt chromite nanoparticles: facile synthesis and size driven collapse of magnetism

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107659-107668 ◽  
Author(s):  
D. Zakutna ◽  
I. Matulkova ◽  
E. Kentzinger ◽  
R. Medlin ◽  
Y. Su ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Acid System ◽  
Facile Synthesis ◽  
Hydrothermal Route ◽  
Polar Solvents ◽  
System P ◽  
Water Alcohol

Uniform nanoparticles of multiferoic CoCr2O4 dispersible in non-polar solvents were prepared by hydrothermal route in water–alcohol–oleic acid system.

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