Structural investigation on water-induced phase transitions of poly(ethylene imine), Part IV: Changes of intra- and intermolecular hydrogen bonds in the hydration processes as revealed by time-resolved Raman spectral measurements

Polymer ◽  
2007 ◽  
Vol 48 (26) ◽  
pp. 7614-7622 ◽  
Author(s):  
Tomoko Hashida ◽  
Kohji Tashiro
Keyword(s):  
Phase Transitions ◽  
Hydrogen Bonds ◽  
Structural Investigation ◽  
Spectral Measurements ◽  
Ethylene Imine ◽  
Intermolecular Hydrogen Bonds ◽  
Time Resolved ◽  
Poly Ethylene ◽  
Raman Spectral

Conformational Analysis of Poly(ethylene imine) and Its Model Compounds:  Rotational and Inversional Isomerizations and Intramolecular and Intermolecular Hydrogen Bonds

2004 ◽  
Vol 37 (24) ◽  
pp. 9169-9183 ◽  
Author(s):  
Yuji Sasanuma ◽  
Satoshi Hattori ◽  
Shinichi Imazu ◽  
Satoshi Ikeda ◽  
Tomoyoshi Kaizuka ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Conformational Analysis ◽  
Model Compounds ◽  
Ethylene Imine ◽  
Intermolecular Hydrogen Bonds ◽  
Poly Ethylene

Calcium phosphate mineralization with linear poly(ethylene imine): a time-resolved study

2011 ◽  
Vol 289 (8) ◽  
pp. 881-888 ◽  
Author(s):  
Andriy Shkilnyy ◽  
Stefanie Schöne ◽  
Claudia Rumplasch ◽  
Annett Uhlmann ◽  
Annett Hedderich ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Ethylene Imine ◽  
Time Resolved ◽  
Phosphate Mineralization ◽  
Linear Poly ◽  
Poly Ethylene

Multiple phase transitions investigated by high-speed TEM

1990 ◽  
Vol 48 (4) ◽  
pp. 550-551
Author(s):  
Oleg Bostanjoglo ◽  
Peter Thomsen-Schmidt
Keyword(s):  
Phase Transitions ◽  
High Speed ◽  
Short Exposure ◽  
Semiconductor Film ◽  
Time Resolved ◽  
Short Exposure Time ◽  
Multiple Phase ◽  
Model Substance ◽  
History Of ◽  
Electron Image

Thin GexTe1-x (x = 0.15-0.8) were studied as a model substance of a composite semiconductor film, in addition being of interest for optical storage material. Two complementary modes of time-resolved TEM were used to trace the phase transitions, induced by an attached Q-switched (50 ns FWHM) and frequency doubled (532 nm) Nd:YAG laser. The laser radiation was focused onto the specimen within the TEM to a 20 μm spot (FWHM). Discrete intermediate states were visualized by short-exposure time doubleframe imaging /1,2/. The full history of a transformation was gained by tracking the electron image intensity with photomultiplier and storage oscilloscopes (space/time resolution 100 nm/3 ns) /3/. In order to avoid radiation damage by the probing electron beam to detector and specimen, the beam is pulsed in this continuous mode of time-resolved TEM,too.Short events ( <2 μs) are followed by illuminating with an extended single electron pulse (fig. 1c)

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