Enhancement of Negative Photochromic Properties of Naphthalene‐Bridged Phenoxyl‐Imidazolyl Radical Complex

ChemPhysChem ◽  
2020 ◽  
Vol 21 (14) ◽  
pp. 1578-1586
Author(s):  
Hiroki Ito ◽  
Katsuya Mutoh ◽  
Jiro Abe
Keyword(s):  
Photochromic Properties ◽  
Radical Complex

scholarly journals Structurally and electronically modulated spin interaction of transient biradicals in two photon-gated stepwise photochromism

2018 ◽  
Vol 17 (3) ◽  
pp. 290-301 ◽  
Author(s):  
Izumi Yonekawa ◽  
Katsuya Mutoh ◽  
Yoichi Kobayashi ◽  
Jiro Abe
Keyword(s):  
Spin Interaction ◽  
Photochromic Properties ◽  
Photochromic Compounds ◽  
Two Photon ◽  
Radical Complex

Bi-photochromic compounds composed of two photochromic phenoxyl-imidazolyl radical complex units are developed. The stepwise photochromic properties can be regulated by control of the central bridging part.

Yttrium Oxyhydrides for Photochromic Applications: Correlating Composition and Optical Response

2018 ◽  
Author(s):  
Dmitrii Moldarev ◽  
Elbruz M. Baba ◽  
Marcos V. Moro ◽  
Chang C. You ◽  
Smagul Zh. Karazhanov ◽  
...  
Keyword(s):  
Medical Devices ◽  
Ternary Diagram ◽  
Optical And Electrical Properties ◽  
Ambient Conditions ◽  
Elastic Recoil ◽  
Elastic Recoil Detection Analysis ◽  
Photochromic Properties ◽  
Smart Windows ◽  
Elastic Recoil Detection ◽  
Detection Analysis

It has been recently demonstrated that yttrium oxyhydride(YHO) films can exhibit reversible photochromic properties when exposed to illumination at ambient conditions. This switchable optical propertyenables their utilization in many technological applications, such as smart windows, sensors, goggles, medical devices, etc. However, how the composition of the films affects their optical properties is not fully clear and therefore demands a straightforward investigation. In this work, the composition of YHO films manufactured by reactive magnetron sputtering under different conditions is deduced in a ternary diagram from Time-of-Flight Elastic Recoil Detection Analysis (ToF-ERDA). The results suggest that stable compounds are formed with a specificchemical formula – YH<sub>2-δ</sub>O<sub>δ</sub>. In addition, optical and electrical properties of the films are investigated, and a correlation with their compositions is established. The corresponding photochromic response is found in a specific oxygen concentration range (0.45 < δ < 1.5) with maximum and minimum of magnitude on the lower and higher border, respectively.

Spectral and kinetic manifestations of chain flexibility and polarity in reversible photoisomerization of spironaphthoxazine-based acrylic copolymers

2021 ◽  
Author(s):  
Vahid Hamrang ◽  
Ali Reza Mahdavian
Keyword(s):  
Photochromic Properties ◽  
Chain Flexibility ◽  
Acrylic Copolymers

Future advances of photoresponsive materials essentially depend on our knowledge about how the substrates, and typically their Tg and polarity, affect photochromic properties. Here, these were followed in two separate...

Study of the Photochromic Properties of Amorphous MoO3 Films Using Raman Microscopy

1995 ◽  
Vol 99 (44) ◽  
pp. 16383-16388 ◽  
Author(s):  
K. Ajito ◽  
L. A. Nagahara ◽  
D. A. Tryk ◽  
K. Hashimoto ◽  
A. Fujishima
Keyword(s):  
Raman Microscopy ◽  
Photochromic Properties

The water–hydroxyl radical complex: A matrix isolation study

2003 ◽  
Vol 118 (17) ◽  
pp. 7797-7802 ◽  
Author(s):  
Anders Engdahl ◽  
Gunnar Karlström ◽  
Bengt Nelander
Keyword(s):  
Hydroxyl Radical ◽  
Matrix Isolation ◽  
Radical Complex

Photochromic Dihetarylethenes. Part 17. Synthesis and Photochromic Properties of Dithienylethenes Containing New Heterocyclic Bridging Fragments.

ChemInform ◽  
2003 ◽  
Vol 34 (15) ◽  
Author(s):  
M. M. Krayushkin ◽  
S. N. Ivanov ◽  
A. Yu. Martynkin ◽  
B. V. Lichitsky ◽  
A. A. Dudinov ◽  
...  
Keyword(s):  
Photochromic Properties
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