Measurement of broadband absorbers in the near-infrared region based on Wavelength Modulation United Absorption Spectroscopy

2021 ◽  
Vol 247 ◽  
pp. 119127
Author(s):  
Shaomin Li ◽  
Liqun Sun
Keyword(s):  
Absorption Spectroscopy ◽  
Near Infrared ◽  
Infrared Region ◽  
Wavelength Modulation ◽  
Near Infrared Region

Spectroscopic Investigation of the High Pressure Ethylene Polymerization

1984 ◽  
Vol 39 (4) ◽  
pp. 399-411 ◽  
Author(s):  
M. Buback
Keyword(s):  
High Pressure ◽  
Absorption Spectroscopy ◽  
Spectroscopic Investigation ◽  
Ethylene Polymerization ◽  
Near Infrared ◽  
Infrared Region ◽  
Rate Equations ◽  
Near Infrared Region ◽  
Maximum Temperatures ◽  
Quantitative Absorption

Quantitative absorption spectroscopy in the infrared and near-infrared region enables kinetic and thermodynamic investigations to be performed on systems at high temperatures and pressures. The technique is illustrated for the ethylene polymerization. From spectroscopic experiments up to 3 kbar at maximum temperatures of 250 °C, the rate equations of the thermally, of the photochemically, and of the chemically initiated polymerization are determined.

Ligand Influence Versus Electronic Configuration of d-metal Ion in Determining the Fate of NIR Emission from LnIII Ions: A Case Study with CuII, NiII and ZnII Complexes.

2021 ◽  
Author(s):  
Abhineet Verma ◽  
Sk Saddam Hossain ◽  
Sailaja S Sunkari ◽  
Joseph Reibenspies ◽  
Satyen Saha
Keyword(s):  
Metal Ion ◽  
Selection Rule ◽  
Near Infrared ◽  
Electronic Configuration ◽  
Infrared Region ◽  
Direct Excitation ◽  
Characteristic Emission ◽  
Nir Emission ◽  
Near Infrared Region

Lanthanides (LnIII) are well known for their characteristic emission in the Near-Infrared Region (NIR). However, direct excitation of lanthanides is not feasible as described by Laporte’s parity selection rule. Here,...

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