Observation and Mechanism of Photo-Isomerisation Induced Rapid Photo-Degradation of Optical Nonlinearity in Guest-Host Type Poled Polymer

2004 ◽  
Vol 44 (3) ◽  
pp. 736 ◽  
Author(s):  
Ye Mingxin ◽  
Yan Jieyun ◽  
Liu Liying ◽  
Ji Liyong ◽  
Xu Lei ◽  
...  
Keyword(s):  
Optical Nonlinearity ◽  
Photo Degradation ◽  
Host Type ◽  
Poled Polymer

Experimental study of optical nonlinearity of stilbene-derivative-doped poled polymer

1998 ◽  
Author(s):  
Liying Liu ◽  
Zhanjia Hou ◽  
Lei Xu ◽  
Jie Chen ◽  
Zhiling Xu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Optical Nonlinearity ◽  
Stilbene Derivative ◽  
Poled Polymer

A relationship between the optical anisotropy and the optical nonlinearity of a poled polymer film

2005 ◽  
Author(s):  
Kazuya Takayama ◽  
Padraig A. Dunne ◽  
Kyoji Komatsu ◽  
Toshikuni Kaino
Keyword(s):  
Polymer Film ◽  
Optical Anisotropy ◽  
Optical Nonlinearity ◽  
Poled Polymer

Electric field response of second order optical nonlinearity in dye doped poled polymer

1996 ◽  
Vol 68 (2) ◽  
pp. 144-146 ◽  
Author(s):  
Takashi Sugihara ◽  
Hiroshi Haga ◽  
Sadahiko Yamamoto
Keyword(s):  
Electric Field ◽  
Optical Nonlinearity ◽  
Second Order ◽  
Poled Polymer ◽  
Field Response

Theoretical Framework of 1,3-Thiazolium-5-Thiolates Mesoionic Compounds: Exploring the Nature of Photophysical Properties and Molecular Nonlinearity

2020 ◽  
Author(s):  
Zeyu Liu ◽  
Shugui Hua ◽  
Tian Lu ◽  
Ziqi Tian
Keyword(s):  
Optical Properties ◽  
Rational Design ◽  
Rayleigh Scattering ◽  
Function Analysis ◽  
Theoretical Calculations ◽  
Photophysical Properties ◽  
Optical Nonlinearity ◽  
Nonlinear Properties ◽  
Photoelectric Performance ◽  
Wave Function Analysis

Inspired by a previous experimental study on the first-order hyperpolarizabilities of 1,3-thiazolium-5-thiolates mesoionic compounds using Hyper-Rayleigh scattering technique, we theoretically investigated the UV-Vis absorption spectra and every order polarizabilities of these mesoionic molecules. Based on the fact that the photophysical and nonlinear properties observed in the experiment can be perfectly replicated, our theoretical calculations explored the essential characteristics of the optical properties of the mesoionic compounds with different electron-donating groups at the level of electronic structures through various wave function analysis methods. The influence of the electron-donating ability of the donor on the optical properties of the molecules and the contribution of the mesoionic ring moiety to their optical nonlinearity are clarified, which have not been reported by any research so far. This work will help people understand the nature of optical properties of mesoionic-based molecules and provide guidance for the rational design of molecules with excellent photoelectric performance in the future.

Photo-degradation of monoazo dye blue 13 using advanced oxidation process

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Aqueous Solution ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
High Energy ◽  
Uv Exposure ◽  
H2o2 Concentration ◽  
Oxidizing Agent ◽  
Photo Degradation ◽  
High Energy Radiation ◽  
Uv Lamp

The high energy radiation overcome the bonding of solute in a solution and H2O2 acts as an oxidizing agent and generates a free radical in the solution which results in photo-degradation by converting the solute in to simple form and resultantly, colored substance under the effect of photo-degradation becomes colorless. The photo-degradation of monoazo dye Blue 13 in an aqueous solution was investigated using a laboratory scale UV lamp in the presence of H2O2 and for maximum degradation of dye, the independent parameter UV power, UV exposure time, pH and H2O2 concentration were optimized. It was found that neither UV in the presence of H2O2 is able to degrade Blue 13 under optimum condition. The results revealed that the use of both UV and H2O2 have pronounced effect on the discoloration of dyes which could be used for management of textile effluents contain waste dyes.

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