Dye-Sensitized Photoelectrochemical Cell Using a Nanocomposite SiO2/Poly(Ethylene Glycol) Thin Film as Electrolyte Support. Characterization by Time-Resolved Luminescence and Conductivity Measurements

2001 ◽  
Vol 105 (17) ◽  
pp. 3486-3492 ◽  
Author(s):  
Elias Stathatos ◽  
Panagiotis Lianos ◽  
Christophoros Krontiras
Keyword(s):  
Thin Film ◽  
Ethylene Glycol ◽  
Photoelectrochemical Cell ◽  
Conductivity Measurements ◽  
Poly Ethylene Glycol ◽  
Time Resolved ◽  
Dye Sensitized ◽  
Poly Ethylene

Control the Surface Wettability of Thermo-Responsive Poly(Ethylene Glycol Methyl Ether methacrylate-co-Triethylene Glycol Methyl Ether Methacrylate) Thin Film by Varying Temperature

2021 ◽  
Vol 873 ◽  
pp. 53-58
Author(s):  
Yang Yi Chen ◽  
Min Pan ◽  
Shan Hong Hu ◽  
Qi Huan ◽  
Chu Yang Zhang
Keyword(s):  
Thin Film ◽  
Ethylene Glycol ◽  
Methyl Ether ◽  
Triethylene Glycol ◽  
Surface Wettability ◽  
Molar Ratio ◽  
Poly Ethylene Glycol ◽  
Vis Spectroscopy ◽  
Poly Ethylene ◽  
Glycol Methyl Ether

The surface wettability of thermo-responsive random poly (ethylene glycol methyl ether methacrylate-co-triethylene glycol methyl ether methacrylate), abbreviated as P(MEOMA-co-MEO3MA), was investigated in thin film. UV-Vis spectroscopy shows that the LCST of P(MEOMA-co-MEO3MA) with molar ratios of 0:20, 6:14 and 9:11 were 43°C, 32 oC and 25 oC, respectively. LCST shifts towards lower temperature when molar ratio of MEOMA increases. ATR-FTIR indicates that P(MEOMA-co-MEO3MA) thin film experienced a collapse when the temperature passes its LCST. The contact angle of the paraffin oil on the film decreases 15o when the temperature is above its LCST, which confirms the surface wettability can be controlled. Atomic force microscopy shows the surface of the swollen thin film becomes rougher when above it LCST.

A novel polymer electrolyte based on oligo(ethylene glycol) 600, K2PdCl4, and K3Fe(CN)6

1997 ◽  
Vol 12 (12) ◽  
pp. 3393-3403 ◽  
Author(s):  
Vito Di Noto
Keyword(s):  
Ethylene Glycol ◽  
Analytical Data ◽  
Conductivity Measurements ◽  
Poly Ethylene Glycol ◽  
Ir Studies ◽  
Structure Morphology ◽  
Different Temperatures ◽  
Ft Ir ◽  
Poly Ethylene ◽  
Peg 600

New electrolytic systems were prepared by reacting K3Fe(CN)6 and K2PdCl4 in a mixture of water and poly(ethylene glycol) 600 (PEG). The reaction occurs in two steps: first a gel is formed, which then shrinks, releasing the solvent. The product thus obtained has the consistency of a smooth, solid plastic paste and is very stable. The influence of the reaction mixture on the structure, morphology, and conductivity of the products was investigated carrying out three preparations (I, II, III) at increasing ratio PEG 600/H2O. By FT-IR studies and analytical data it was concluded that these materials are inorganic-organic networks containing CN bridges between Fe and Pd atoms and PEG 600 bridges between Pd atoms. Scanning electron microscopy studies revealed that the morphology of polymers I, II, and III is significantly influenced by the conditions of the synthesis. Conductivity measurements made at different temperatures showed that polymers I, II, and III conduct ionically. The conductivity of polymer I, which was synthesized with the highest water/PEG 600 ratio, is on the order of 1.4 · 10−3 Sycm at 25 °C.

scholarly journals THE EFFECT OF POLY (ETHYLENE GLYCOL) ON THE PHOTOLUMINESCENCE PROPERTIES OF CARBON DOTS FROM CASSAVA PEELS SYNTHESIZED BY HYDROTHERMAL METHODS

2019 ◽  
Vol 4 (1) ◽  
pp. 11-20 ◽  
Author(s):  
Permono Adi Putro ◽  
Liszulfah Roza ◽  
Isnaeni Isnaeni
Keyword(s):  
Ethylene Glycol ◽  
Carbon Dots ◽  
Time Decay ◽  
Poly Ethylene Glycol ◽  
Peak Wavelength ◽  
Time Resolved ◽  
Before And After ◽  
Pl Intensity ◽  
Poly Ethylene ◽  
Cassava Peels

Carbon dots (C-dots) have been successfully synthesized from cassava peels using the hydrothermal method. The C-dots are further passivated using poly (ethylene glycol) (PEG) with a variation of the volume of 0.5 ml, 1.0 ml, and 1.5 ml. The properties of photoluminescence C-dots before and after PEG were characterized using photoluminescence (PL) and time-resolved photoluminescence (TRPL) spectrophotometers. PEG succeeded in influencing PL C-dots properties, such as peak wavelength, PL intensity, and electron time decay. The addition of 0.5 ml of PEG to C-dots is the optimum condition and best with the peak wavelength, the PL intensity and, time decay electron is 507.52 nm, 5302 a.u, and 3.794031133 ns, respectively.

scholarly journals Surface Carbon Shell-Functionalized ZrO2 as Nanofiller in Polymer Gel Electrolyte-Based Dye-Sensitized Solar Cells

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1418 ◽  
Author(s):  
Lim ◽  
Moon ◽  
Choi ◽  
Baek ◽  
Lim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Ethylene Glycol ◽  
Dye Sensitized Solar Cells ◽  
Carbon Shell ◽  
Polymer Gel ◽  
Poly Ethylene Glycol ◽  
Surface Carbon ◽  
Dye Sensitized ◽  
Poly Ethylene ◽  
Sensitized Solar Cells

We prepare dye-sensitized solar cells (DSSCs) fabricated with a poly (ethylene glycol) based polymer gel electrolytes (PGEs) incorporating surface carbon shell-functionalized ZrO2 nanoparticles (ZrO2-C) as nanofillers (NFs). ZrO2 are polymerized via atom transfer radical polymerization (ATRP) using poly (ethylene glycol) methyl ether methacrylate (POEM) as a scaffold to prepare the ZrO2-C through carbonization. The power conversion efficiency of DSSC with 12 wt% ZrO2-C/PGEs is 5.6%, exceeding that with PGEs (4.4%). The enhanced efficiency is attributed to Lewis acid-base interactions of ZrO2-C and poly (ethylene glycol), catalytic effect of the carbon shells of ZrO2-C, which results in reduced crystallinity, enhanced ion conductivity of electrolytes, decreased counterelectrode/electrolyte interfacial resistance, and improved charge transfer rate. These results demonstrate that ZrO2-C introduction to PGEs effectively improves the performance of DSSCs.

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