Poly (L,4-Naphthylene Sulfide) Oligomers: Electronic And Vibrational Spectra Of The Pristine And Oxidized Forms

1993 ◽  
Vol 328 ◽  
Author(s):  
P. Piaggio ◽  
G. Petrillo ◽  
M. Novi ◽  
C. Dell'Erba
Keyword(s):  
Physical Properties ◽  
Vibrational Spectroscopy ◽  
Vibrational Spectra ◽  
Sulfur Compounds ◽  
Steric Effects ◽  
Regular Arrangement ◽  
Electronic And Vibrational Spectra ◽  
Charged Defects

ABSTRACTNew naphthalene-sulfur compounds, oligomers of poly (l,4-naphthylene sulfide), have been synthesized and studied by electronic and vibrational spectroscopy in both pristine and oxidized forms. It has been found that the charged defects induced on these molecules are Much More stable than in the corresponding 1,4-phenylene derivatives. Nevertheless their physical properties are strongly affected by steric effects which hinder a regular arrangement of the repeating units.

scholarly journals Complementary vibrational spectroscopy

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Kazuki Hashimoto ◽  
Venkata Ramaiah Badarla ◽  
Akira Kawai ◽  
Takuro Ideguchi
Keyword(s):  
Raman Scattering ◽  
Vibrational Spectroscopy ◽  
Infrared Absorption ◽  
Vibrational Spectra ◽  
Molecular Spectroscopy ◽  
High Spectral Resolution ◽  
Organic Liquids ◽  
Label Free ◽  
Molecular Fingerprint ◽  
Raman Scattering Spectroscopy

Abstract Vibrational spectroscopy, comprised of infrared absorption and Raman scattering spectroscopy, is widely used for label-free optical sensing and imaging in various scientific and industrial fields. The two molecular spectroscopy methods are sensitive to different types of vibrations and provide complementary vibrational spectra, but obtaining complete vibrational information with a single spectroscopic device is challenging due to the large wavelength discrepancy between the two methods. Here, we demonstrate simultaneous infrared absorption and Raman scattering spectroscopy that allows us to measure the complete broadband vibrational spectra in the molecular fingerprint region with a single instrument based on an ultrashort pulsed laser. The system is based on dual-modal Fourier-transform spectroscopy enabled by efficient use of nonlinear optical effects. Our proof-of-concept experiment demonstrates rapid, broadband and high spectral resolution measurements of complementary spectra of organic liquids for precise and accurate molecular analysis.

Metal defects in HKUST-1 MOF revealed by vibrational spectroscopy: a combined quantum mechanical and experimental study

2020 ◽  
Vol 8 (21) ◽  
pp. 10796-10812 ◽  
Author(s):  
Francesco Silvio Gentile ◽  
Marianna Pannico ◽  
Mauro Causà ◽  
Giuseppe Mensitieri ◽  
Giulio Di Palma ◽  
...  
Keyword(s):  
Experimental Study ◽  
Theoretical Analysis ◽  
Ab Initio ◽  
Raman Spectra ◽  
Vibrational Spectroscopy ◽  
Vibrational Spectra ◽  
Quantum Mechanical

This paper reports an interpretation of the FTIR and Raman spectra of the HKUST-1 MOF in light of an ab initio theoretical analysis of the vibrational spectra of the framework.

Sign in / Sign up

Export Citation Format

Share Document