Ultrafast Dynamics of the Transoid‐ cis Isomer Formed in Photochromic Reaction from 3 H ‐Naphthopyran

ChemPhysChem ◽  
2020 ◽  
Vol 21 (13) ◽  
pp. 1402-1407 ◽  
Author(s):  
Sabina Brazevic ◽  
Mikołaj Baranowski ◽  
Marek Sikorski ◽  
Michał F. Rode ◽  
Gotard Burdziński
Keyword(s):  
Ultrafast Dynamics ◽  
Photochromic Reaction ◽  
Cis Isomer

Perylene and perinone pigments

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Robert Christie ◽  
Adrian Abel
Keyword(s):  
High Performance ◽  
Heat Stability ◽  
High Heat ◽  
Structural Features ◽  
Fastness Properties ◽  
Tetracarboxylic Acid ◽  
Organic Pigments ◽  
Orange Color ◽  
Cis Isomer ◽  
Chemical Class

Abstract Perylenes and perinones are separate groups of pigments categorized within the carbonyl chemical class. The two pigment groups show similarities, for example, in their chemical structural features and, to an extent, in their technical and application properties as high-performance organic pigments. Perylenes constitute a series of firmly established high-performance pigments, offering red and violet colors, and also extending to black. Synthetically, they are derived from perylene-1,4,5,8-tetracarboxylic acid. The perylenes tend to be quite expensive pigments, but their high levels of fastness properties mean that they are suitable for highly demanding applications. In particular, they offer very high heat stability. Two perinone pigments are used commercially. In their synthesis from naphthalene-1,4,5,8-tetracarboxylic acid, they are formed as mixtures of the two isomers, which can be separated. The trans isomer, CI Pigment Orange 43, is a highly important commercial pigment, especially for plastics, while the cis isomer, CI Pigment Red 194, is bordeaux in color and is of much lesser importance. The perinone, CI Pigment Orange 43, provides a brilliant orange color and has very good fastness properties. Its commercial manufacture involves a challenging multistage procedure and consequently it is one of the most expensive organic pigments on the market.

scholarly journals Element-specific investigations of ultrafast dynamics in photoexcited Cu2ZnSnS4 nanoparticles in solution

2021 ◽  
Vol 8 (2) ◽  
pp. 024501
Author(s):  
Christian Rein ◽  
Jens Uhlig ◽  
David Carrasco-Busturia ◽  
Khadijeh Khalili ◽  
Anders S. Gertsen ◽  
...  
Keyword(s):  
Ultrafast Dynamics

scholarly journals Ultrafast dynamics of the surface photovoltage in potassium-doped black phosphorus

2021 ◽  
Vol 104 (3) ◽  
Author(s):  
G. Kremer ◽  
M. Rumo ◽  
C. Yue ◽  
A. Pulkkinen ◽  
C. W. Nicholson ◽  
...  
Keyword(s):  
Black Phosphorus ◽  
Surface Photovoltage ◽  
Ultrafast Dynamics

Spiral hexatrienes. The hindered cis isomer of mini-carotene-3 and hexakis-(2,2′,4,4′,6,6′-trifluoromethyl)stilbene

1994 ◽  
Vol 35 (39) ◽  
pp. 7177-7180 ◽  
Author(s):  
Rongliang Chen ◽  
Leticia U. Colmenares ◽  
J.R. Thiel ◽  
Robert S.H. Liu
Keyword(s):  
Cis Isomer
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