scholarly journals Matrix-assisted pulsed-laser evaporation of DOPA-modified poly(ethylene glycol) thin films

2007 ◽  
Vol 21 (3-4) ◽  
pp. 287-299 ◽  
Author(s):  
A. Doraiswamy ◽  
C. Dinu ◽  
R. Cristescu ◽  
P. B. Messersmith ◽  
B. J. Chisholm ◽  
...  
Keyword(s):  
Thin Films ◽  
Ethylene Glycol ◽  
Pulsed Laser ◽  
Laser Evaporation ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

FABRICATION OF QCM TYPE SMOTHER DETECTION SENSOR BY PLASMA POLYMERIZING SnOx ORGANIC-LIKE FILMS AND SPIN COATING WITH POLY ETHYLENE GLYCOL

2012 ◽  
Vol 24 (02) ◽  
pp. 179-183
Author(s):  
Ko-Shao Chen ◽  
Shu-Chuan Liao ◽  
Hsin-Ming Wu ◽  
Yu-Chia Tsao ◽  
Hong-Ru Lin
Keyword(s):  
Thin Films ◽  
Ethylene Glycol ◽  
Spin Coating ◽  
Room Temperature ◽  
Plasma Deposition ◽  
Post Treatment ◽  
Detection Sensitivity ◽  
Poly Ethylene Glycol ◽  
Frequency Drop ◽  
Poly Ethylene

Quartz crystal microbalances (QCM) are transducers for chemical and biochemical sensing. The oscillation frequency of QCM is affected by the adsorbed mass on the surface. In this work, a new room temperature type gas sensor device fabricated by organically hybridized plasma deposition of tetramethyltin (TMT) and oxygen. Post treatment with poly ethylene glycol (PEG) was developed to detect the ambient environmental smother, and the responses of the fabricated sensor to smother detection were investigated. SnO x C y thin films on the sensor electrodes were obtained by plasma deposition from TMT and O 2 gas mixtures at room temperature. A spin coating post treatment on the SnO x C y thin films turns into hydrophilic property. The response of the QCM sensor to the smother detection shows a frequency drop during the burning of candle and has good detection sensitivity with Δf equal to 2400 Hz. Repeated smother testing with the QCM type smother detection sensor also indicates the stability of the fabricated sensor.

Effects of poly(ethylene glycol) additive molecular weight on the microstructure and properties of sol-gel-derived lead zirconate titanate thin films

2003 ◽  
Vol 18 (3) ◽  
pp. 737-741 ◽  
Author(s):  
Shuhui Yu ◽  
Kui Yao ◽  
Santiranjan Shannigrahi ◽  
Francis Tay Eng Hock
Keyword(s):  
Thin Films ◽  
Molecular Weight ◽  
Ethylene Glycol ◽  
Lead Zirconate Titanate ◽  
Sol Gel ◽  
Lead Zirconate ◽  
Poly Ethylene Glycol ◽  
Molecular Weights ◽  
Zirconate Titanate ◽  
Poly Ethylene

Poly(ethylene glycol) (PEG) additives with different molecular weights were used to modify sol-gel precursor solutions for preparing lead zirconate titanate (PZT) thin films. The morphology, crystalline structure, and mechanical and electrical properties of the films were characterized. The relationship between the characteristics of the films and the molecular weight of PEG was investigated. It was observed that the PEG eliminated cracking of the films during multiple pyrolysis treatments. However, with the increase of the PEG molecular weight, the films became less dense, which led to decreased Young's modulus and dielectric constant and increased coercive field. Our experiments showed that films prepared from sols modified by PEG with a molecular weight of 200 exhibited a dense morphology and excellent mechanical and electric properties without cracking.

The Swelling and Transition Behavior of Thermo-Responsive Poly(2-(2-Methoxyethoxy) Ethoxyethyl Methacrylate-co-Poly(Ethylene Glycol) Methyl Ether Methacrylate) Thin Films

2021 ◽  
Vol 873 ◽  
pp. 59-64
Author(s):  
Yang Yi Chen ◽  
Wen Jing Wen ◽  
Zhi Qin Su ◽  
Qi Huan ◽  
Chu Yang Zhang
Keyword(s):  
Thin Films ◽  
Ethylene Glycol ◽  
Methyl Ether ◽  
Random Copolymer ◽  
Molar Ratio ◽  
Poly Ethylene Glycol ◽  
H Nmr ◽  
Poly Ethylene ◽  
Copolymer Poly ◽  
Glycol Methyl Ether

Thermo-responsive random copolymer poly (2-(2-methoxyethoxy) ethoxyethyl methacrylate-co-poly (ethylene glycol) methyl ether methacrylate), abbreviated as P(MEO2MA-co-OEGMA300) was synthesized by 2-(2-methoxyethoxy) ethoxyethyl methacrylate (MEO2MA) and poly (ethylene glycol) methyl ether methacrylate (OEGMA300) with a molar ratio of 1:1 via atom transfer radical polymerization (ATRP). The structure of P(MEO2MA-co-OEGMA300) was confirmed by 1H NMR and GPC. The transition behaviors of P(MEO2MA-co-OEGMA300) in aqueous solution were investigated by UV-Vis and DLS. While the transition behaviors of P(MEO2MA-co-OEGMA300) thin films were probed by white light interferometry. Compared to the P(MEO2MA-co-OEGMA300) in solution, it shows a much broader transition region, which is a promising candidate for the slow release of drug in the field of medicine.

Surface Modification of Gadolinium Oxide Thin Films and Nanoparticles using Poly(ethylene glycol)-Phosphate

Langmuir ◽  
2011 ◽  
Vol 28 (1) ◽  
pp. 774-782 ◽  
Author(s):  
Andrée-Anne Guay-Bégin ◽  
Pascale Chevallier ◽  
Luc Faucher ◽  
Stéphane Turgeon ◽  
Marc-André Fortin
Keyword(s):  
Thin Films ◽  
Surface Modification ◽  
Ethylene Glycol ◽  
Gadolinium Oxide ◽  
Poly Ethylene Glycol ◽  
Oxide Thin Films ◽  
Poly Ethylene
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