scholarly journals Near-infrared absorbing organic materials

2004 ◽  
Vol 76 (7-8) ◽  
pp. 1435-1443 ◽  
Author(s):  
Z. Y. Wang ◽  
J. Zhang ◽  
X. Wu ◽  
Maria Birau ◽  
Guomin Yu ◽  
...  
Keyword(s):  
Metal Complexes ◽  
Near Infrared ◽  
Organic Materials ◽  
Mixed Valence ◽  
Radical Anions ◽  
Absorbing Materials ◽  
Dinuclear Metal Complexes ◽  
Sandwich Type ◽  
Optical Attenuators ◽  
Variable Optical Attenuators

Organic solids and polymers that absorb in the near-infrared (NIR) region (1000–2000 nm) represent a class of emerging materials and show a great potential for use in photonics and telecommunications. The radical anions of stacked aromatic imides, fused phorphyrin arrays, polythiophenes, sandwich-type lanthanide bisphthalocyanines, semiquinones, and mixed-valence dinuclear metal complexes are a few known examples of NIR-absorbing organic materials. Most of these NIR-absorbing materials are also electro- chemically active or electrochromic (EC). This brief review covers several types of NIR-absorbing organic materials and discusses their potential for applications in EC variable optical attenuators (VOAs).

Orthogonal electronic coupling in multicentre arylamine mixed-valence compounds based on a dibenzofulvene–thiophene conjugated bridge

2017 ◽  
Vol 53 (64) ◽  
pp. 8960-8963 ◽  
Author(s):  
A. Beneduci ◽  
G. A. Corrente ◽  
E. Fabiano ◽  
V. Maltese ◽  
S. Cospito ◽  
...  
Keyword(s):  
Near Infrared ◽  
Mixed Valence ◽  
Infrared Region ◽  
Optical Modulation ◽  
Electronic Coupling ◽  
Voltage Dependent ◽  
Near Infrared Region ◽  
Mixed Valence Compounds

Novel H-shaped tetrarylamine mixed valence compounds showing orthogonal electronic coupling generate voltage-dependent electro-optical modulation in the near infrared region.

The Rise of Near-Infrared Emitters: Organic Dyes, Porphyrinoids, and Transition Metal Complexes

2016 ◽  
Vol 374 (4) ◽  
Author(s):  
Andrea Barbieri ◽  
Elisa Bandini ◽  
Filippo Monti ◽  
Vakayil K. Praveen ◽  
Nicola Armaroli
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Near Infrared ◽  
Organic Dyes ◽  
Infrared Emitters

scholarly journals Mid and Near-Infrared Reflection Spectral Database of Natural Organic Materials in the Cultural Heritage Field

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Claudia Invernizzi ◽  
Tommaso Rovetta ◽  
Maurizio Licchelli ◽  
Marco Malagodi
Keyword(s):  
Near Infrared ◽  
Organic Materials ◽  
Protective Coatings ◽  
Total Reflection ◽  
Reflection Mode ◽  
Novel Approach ◽  
Infrared Reflection ◽  
Detailed Interpretation ◽  
Materials Used ◽  
Spectral Database

This study presents mid and near-infrared (7500-375 cm−1) total reflection mode spectra of several natural organic materials used in artworks as binding media, consolidants, adhesives, or protective coatings. A novel approach to describe and interpret reflectance bands as well as calculated absorbance after Kramers-Kronig transformation (KKT) is proposed. Transflection mode spectra have represented a valuable support both to study the distorted reflectance bands and to validate the applicability and usefulness of the KK correction. The aim of this paper is to make available to scientists and conservators a comprehensive infrared reflection spectral database, together with its detailed interpretation, as a tool for the noninvasive identification of proteins, lipids, polysaccharides, and resins by means of portable noncontact FTIR spectrometers.

Sign in / Sign up

Export Citation Format

Share Document