Dithienylethenes functionalized by triphenylethene and difluoroboron β-diketonate fragments: synthesis, optical switching behavior and fluorescent turn-on sensing for volatile organic amines

2021 ◽  
pp. 109422
Author(s):  
Ziyong Li ◽  
Xinyu Gao ◽  
Xiaoxiao Hu ◽  
Xiaoman Zhang ◽  
Chenlu Jia ◽  
...  
Keyword(s):  
Optical Switching ◽  
Switching Behavior ◽  
Turn On ◽  
Volatile Organic ◽  
Organic Amines

Experimental Studies of New GaAs Metal/Insulator/p-n+Switches Using Low Temperature Oxide

2002 ◽  
Vol 25 (3) ◽  
pp. 233-237
Author(s):  
K. F. Yarn
Keyword(s):  
Low Temperature ◽  
Negative Differential Resistance ◽  
Doping Concentration ◽  
Experimental Studies ◽  
Differential Resistance ◽  
Switching Behavior ◽  
Metal Insulator ◽  
Turn On ◽  
Temperature Oxide ◽  
Phase Chemical

First observation of switching behavior is reported in GaAs metal-insulator-p-n+structure, where the thin insulator is grown at low temperature by a liquid phase chemical-enhanced oxide (LPECO) with a thickness of 100 Å. A significant S-shaped negative differential resistance (NDR) is shown to occur that originates from the regenerative feedback in a tunnel metal/insulator/semiconductor (MIS) interface andp-n+junction. The influence of epitaxial doping concentration on the switching and holding voltages is investigated. The switching voltages are found to be decreased when increasing the epitaxial doping concentration, while the holding voltages are almost kept constant. A high turn-off/turn-on resistance ratio up to105has been obtained.

Optical Switching of Coherent VO2 Precipitates Embedded in Sapphire

1995 ◽  
Vol 396 ◽  
Author(s):  
L. A. Gea ◽  
L. A. Boatner ◽  
J. D. Budai ◽  
R. A. Zuhr
Keyword(s):  
Phase Transition ◽  
Vanadium Dioxide ◽  
Thermal Processing ◽  
Optical Switching ◽  
Optical Transmission ◽  
Structural Phase ◽  
Switching Behavior ◽  
New Type ◽  
Single Crystal Sapphire ◽  
Smart Surface

AbstractIn this work, we report the formation of a new type of active or “smart” surface that is produced by ion implantation and thermal processing. By co-implanting vanadium and oxygen into a single-crystal sapphire substrate and annealing the system under appropriate conditions, it was possible to form buried precipitates of vanadium dioxide that were crystallographically oriented with respect to the host AI2O3 lattice. The implanted VO2 precipitate system undergoes a structural phase transition that is accompanied by large variations in the optical transmission which are comparable to those observed for thin films of VO2 deposited on sapphire. Co-implantation with oxygen was found to be necessary to ensure good optical switching behavior.

Nonressonant nonlinear optical switching behavior of Ag monometallic and Ag@Au bimetallic investigated by femtosecond Z-Scan measurements

2021 ◽  
Vol 142 ◽  
pp. 107247
Author(s):  
Sara D.G. Mariano ◽  
Naythalla A.M. Saraiva ◽  
Jean C.S. Costa ◽  
Claudevan A. Sousa ◽  
Nefe J.B. Silva ◽  
...  
Keyword(s):  
Optical Switching ◽  
Nonlinear Optical ◽  
Switching Behavior

Supramolecular Self-Assembly of Nitro-incorporated Quinoxaline Framework: Insights into the Origin of Fluorescence Turn-on Response towards Benzene group of VOCs

The Analyst ◽  
2021 ◽  
Author(s):  
Megha Basak ◽  
Gopal Das
Keyword(s):  
Volatile Organic Compounds ◽  
Human Health ◽  
Organic Compounds ◽  
Self Assembly ◽  
Turn On ◽  
Volatile Organic ◽  
Fluorescence Turn On

Hazardous volatile organic compounds (VOCs) can significantly impact human health and the environment. Hence, the detection of VOCs has become foremost important. Quinoxaline-based fluorimetric probe (1) unveils a notable “Turn-On”...

scholarly journals Chloro- and BF2bdk-substituted dithienylethene: Synthesis, photophysical properties, and optical switching behavior

2020 ◽  
pp. 174751982095141
Author(s):  
Zhiqiang Lu ◽  
Wenbo Yang ◽  
Yanhui Bai ◽  
Mo Wang ◽  
Zixu Li ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Optical Switching ◽  
High Resolution Mass Spectrometry ◽  
Photophysical Properties ◽  
Red Light ◽  
Switching Behavior ◽  
Polar Solvents ◽  
H Nmr ◽  
Resolution Mass ◽  
C Nmr

A novel chloro- and BF2bdk-substituted dithienylethene derivative, in which a chlorine atom and a difluoroboron β-diketonate (BF2bdk) group are appended at the termini of the dithienylethene core, is developed. The structure was confirmed by 1H NMR, 13C NMR, and high-resolution mass spectrometry (electrospray ionization). It displayed solvent-dependent photophysical properties, and blue/red light-triggered optical switching behavior in nonpolar or less polar solvents.

Turn-on fluorimetric sensor for water dispersed volatile organic compounds - A nanosponge approach

2020 ◽  
Vol 311 ◽  
pp. 127904 ◽  
Author(s):  
Anna Kisiel ◽  
Barbara Baniak ◽  
Krzysztof Maksymiuk ◽  
Agata Michalska
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Turn On ◽  
Volatile Organic
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