Molecular Orientation Distributions in Uniaxially Oriented Poly(l-lactic acid) Films Determined by Polarized Raman Spectroscopy

2006 ◽  
Vol 39 (9) ◽  
pp. 3312-3321 ◽  
Author(s):  
Masakazu Tanaka ◽  
Robert J. Young
Keyword(s):  
Raman Spectroscopy ◽  
Lactic Acid ◽  
Molecular Orientation ◽  
Orientation Distributions ◽  
Polarized Raman Spectroscopy ◽  
Polarized Raman

Angle-Dependent Polarized Raman Spectroscopy of TIPS Pentacene Single-Crystalline Domains Deposited on Au-Striped Substrates

2015 ◽  
Vol 1799 ◽  
pp. 1-6
Author(s):  
Norio Onojima ◽  
Ayato Nakamura ◽  
Hiroki Saito ◽  
Norihiro Daicho
Keyword(s):  
Raman Spectroscopy ◽  
Molecular Orientation ◽  
Spray Deposition ◽  
Single Crystalline ◽  
Electrostatic Spray Deposition ◽  
Si Substrates ◽  
Polarized Raman Spectroscopy ◽  
Polarized Raman ◽  
Crystalline Domains ◽  
Electrostatic Spray

ABSTRACT6,13-bis(triisopropylsilylethynyl) pentacene (TIPS pentacene) was deposited on SiO2/Si substrates with Au stripes using electrostatic spray deposition (ESD). We observed that crystalline domains on the substrates were preferentially oriented. To elucidate this phenomenon, the correlation between the orientation direction and stripe direction was investigated by angle-dependent polarized Raman spectroscopy. Since the acene planes in TIPS pentacene take an edge-on orientation on the substrates, C-C ring stretch modes can be used to probe the in-plane orientation. We found that the long molecular axis of acene planes is inclined at about 50° or 110° from the stripe direction. This result suggests that the molecular orientation of the crystalline domains can be controlled by the stripes.

Molecular Orientation of High-Density Polyethylene Fibers Characterized by Polarized Raman Spectroscopy

1995 ◽  
Vol 28 (11) ◽  
pp. 4007-4012 ◽  
Author(s):  
Mario J. Citra ◽  
D. Bruce Chase ◽  
Richard M. Ikeda ◽  
Kenncorwin H. Gardner
Keyword(s):  
Raman Spectroscopy ◽  
High Density Polyethylene ◽  
Molecular Orientation ◽  
High Density ◽  
Polarized Raman Spectroscopy ◽  
Polarized Raman ◽  
Polyethylene Fibers
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