New Materials Directions for the Realization of Ultra-High Performance 3rd Order Non-Linear Optical Organics

2015 ◽  
Author(s):  
Paras N. Prasad
Keyword(s):  
High Performance ◽  
New Materials ◽  
Non Linear ◽  
Linear Optical

scholarly journals Push-Pull Tricyanovinyl-Substituted Thienylpyrroles: Synthesis, Solvatochromic and Electrochemical Properties

2006 ◽  
Vol 514-516 ◽  
pp. 98-102 ◽  
Author(s):  
M. Manuela M. Raposo ◽  
Ana M. R. C. Sousa ◽  
António Maurício C. Fonseca ◽  
Gilbert Kirsch
Keyword(s):  
Optical Properties ◽  
Electrochemical Properties ◽  
Band Gaps ◽  
Electrochemical Studies ◽  
New Materials ◽  
Alkyl Aryl ◽  
Non Linear ◽  
Linear Optical Properties ◽  
Linear Optical ◽  
New Compounds

New tricyanovinyl- derivatives 1 of 1-(alkyl)aryl-2-(2´-thienyl)pyrroles 2 have been synthesized and characterized. Compounds 1 display dramatic reductions in both their optical and electrochemical band gaps in comparison to thienylpyrroles 2. The solvatochomic behavior of tricyanovinyl- derivatives 1 was investigated in a variety of solvents. In agreement with the solvatochromic and the electrochemical studies for push-pull derivatives 1 the new compounds prepared, can find application for manufacturing new materials with notable non-linear optical properties.

scholarly journals Recent advances and applications of nonlinear optical microscopy: perspectives in cancer imaging

2018 ◽  
Author(s):  
A S M Waliullah
Keyword(s):  
Harmonic Generation ◽  
Cancer Diagnosis ◽  
High Performance ◽  
Second Harmonic ◽  
Cancer Imaging ◽  
Non Linear ◽  
Linear Optical ◽  
Third Harmonic Generation Microscopy ◽  
Anti Stokes ◽  
Microscopic Techniques

Background: Biomedical imaging is one of the important investigation processes for human diseases, especially in cancer diagnosis. Along with conventional light microscopic techniques, there are some high performance imaging systems are being used for cancer diagnosis, such as phase contrast microscopy, Optical coherence tomography, magnetic resonance imaging. But still these imaging modalities suffer from several limitations and medical facilities, research institutions started to use more specific and advanced microscopic techniques like, multi-photon fluorescence microscopy, Coherent anti-Stokes Raman scattering microscopy, second harmonic generation microscopy, third harmonic generation microscopy, etc. which are referred as non-linear optical microscopy.Methods: Literature searches from PubMed and google scholar related to recent development of non-linear optical microscopies and their applications on cancer diagnosis were chosen in this review.Results: After reviewing 93 related article, it was found that non-linear optical microscopies are playing a key role in the precise, rapid diagnosis, staging of different types of cancer. Conclusions: Non-linear optical microscopic modalities are not only limited to image the cancerous tissues, but also have the potential for commercialized non-invasive, real time endoscopic and laparoscopic diagnosis of cancer. If so, the physician could use these modalities for early diagnosis, surgery, and treatment. Thus way non-linear optical microscopic techniques could pioneer in cancer imaging area.

Discovery of High-Performance Organic Non-Linear Optical Molecules by Systematic ‘Smart Material’ Design Strategies

2010 ◽  
Vol 123-125 ◽  
pp. 959-962 ◽  
Author(s):  
Jacqueline M. Cole ◽  
Ze F. Weng
Keyword(s):  
High Performance ◽  
Chemical Space ◽  
Active Material ◽  
Material Design ◽  
Search Strategies ◽  
Search Method ◽  
Smart Material ◽  
Non Linear ◽  
Nlo Materials ◽  
Linear Optical

This paper presents the discovery of a range of high-performance organic non-linear optical (NLO) materials, that arises from ‘smart material’ design and systematic search strategies. This systematization circumvents the previous use of iterative discovery methods, which can only ever afford incremental improvements to currently known NLO materials, and they have no capacity to reveal entirely new classes of suitable NLO materials. This new approach employs data-mining, using the world’s repository of all published organic crystal structures as a representative set of chemical space. Two independent search strategies are implemented, each predicting the best organic NLO materials. The first search method relies on the concept of ‘molecular lego’, taking particular types of molecular fragments that are known to be important constituents of an NLO active material (the ‘lego’), and searching for these through chemical space, with the assistance of graph theory algorithms and systematic enumeration and classification. The second search method uses quantum- mechanical calculations to evaluate the molecular hyperpolarizability, β, of every organic molecule in the aforementioned database. Since β affords the intrinsic measure of NLO output, all organic molecules listed in descending order of  values reflects a ranked list of their NLO potential. The NLO properties of selected materials that are highly-ranked in these two lists were then tested experimentally, using Hyper-Rayleigh Scattering (HRS). The predictions are shown to be borne out by such experiments: HRS results show β0 (static hyperpolarizability) values that are up to 10 x greater than those for the industrial reference Disperse Red 1. Due to the commercial potential of these results, four new classes of NLO materials identified by this study have recently been patented.

Mineral/microfibrillated cellulose composite materials: High performance products, applications, and product forms

TAPPI Journal ◽  
2018 ◽  
Vol 17 (09) ◽  
pp. 507-515 ◽  
Author(s):  
David Skuse ◽  
Mark Windebank ◽  
Tafadzwa Motsi ◽  
Guillaume Tellier
Keyword(s):  
Composite Materials ◽  
High Performance ◽  
Aqueous Suspension ◽  
Production Capacity ◽  
Cost Savings ◽  
Cost Effective ◽  
New Materials ◽  
Wet Strength ◽  
Product Forms ◽  
Cellulose Composite

When pulp and minerals are co-processed in aqueous suspension, the mineral acts as a grinding aid, facilitating the cost-effective production of fibrils. Furthermore, this processing allows the utilization of robust industrial milling equipment. There are 40000 dry metric tons of mineral/microfbrillated (MFC) cellulose composite production capacity in operation across three continents. These mineral/MFC products have been cleared by the FDA for use as a dry and wet strength agent in coated and uncoated food contact paper and paperboard applications. We have previously reported that use of these mineral/MFC composite materials in fiber-based applications allows generally improved wet and dry mechanical properties with concomitant opportunities for cost savings, property improvements, or grade developments and that the materials can be prepared using a range of fibers and minerals. Here, we: (1) report the development of new products that offer improved performance, (2) compare the performance of these new materials with that of a range of other nanocellulosic material types, (3) illustrate the performance of these new materials in reinforcement (paper and board) and viscosification applications, and (4) discuss product form requirements for different applications.

Experimental and Theoretical (ab initio and DFT) Analysis of UV-Vis Spectra, Thermodynamic Functions and Non-linear Optical Properties of 2-Chloro-3,4-Dimethoxybenzaldehyde

2015 ◽  
Vol 8 (2) ◽  
pp. 2122-2134
Author(s):  
Sarvendra Kumar ◽  
Rajesh Kumar ◽  
Jayant Teotia ◽  
M. K. Yadav
Keyword(s):  
Thermodynamic Functions ◽  
Title Compound ◽  
Density Functional ◽  
Structural Characteristics ◽  
Basis Sets ◽  
Ultraviolet Absorption Spectrum ◽  
Non Linear ◽  
Different Temperatures ◽  
Linear Optical Properties ◽  
Linear Optical

In the present work, UV- Visible spectra of 2-Chloro-3,4-Dimethoxybenzaldehyde (2,3,4-CDMB) compound  have been carried out experimentally and theoretically. The ultraviolet absorption spectrum of title compound in three solvents (Acetone, Diethyl Ether, CCl4) of different polarity were examined in the range of 200–500 nm. The structure of the molecule was optimized and the structural characteristics were determined by HF and DFT (B3LYP) methods with 6-31+G(d,p) and 6-311++G(d,p) as basis sets. The excitation energy, wavelength corresponds to absorption maxima () and oscillator strength (f) are calculated by Time-Dependent Density Functional Theory (TD-DFT) using B3LYP/6-31+G(d,p) and B3LYP/6-311++G(d,p) as basis sets. The electric dipole moment (μ), polarizability (α) and the first hyperpolarizability (β ) have been computed to evaluate the non-linear optical (NLO) response of the investigated compound by HF and DFT (B3LYP) with already mentioned basis sets. Thermodynamic functions of the title compound at different temperatures were also calculated.

Synthesis of 3-(Cyclohexylamino)-2-arylimidazo[1,2-a]pyridine-8- carboxylic Acids Via an Efficient Three-component Condensation Reaction between Cyclohexylisocyanide and 2-Aminopyridine-3-carboxylic Acid in the Presence of Aromatic Aldehyde

2018 ◽  
Vol 21 (4) ◽  
pp. 298-301 ◽  
Author(s):  
Ghasem Marandi
Keyword(s):  
Biological Sciences ◽  
Carboxylic Acid ◽  
Carboxylic Acids ◽  
High Performance ◽  
Condensation Reaction ◽  
Aromatic Aldehydes ◽  
New Materials ◽  
One Pot ◽  
High Yields ◽  
Benzaldehyde Derivatives

Aim and Objective: The reaction of cyclohexylisocyanide and 2-aminopyridine-3- carboxylic acid in the presence of benzaldehyde derivatives in ethanol led to 3-(cyclohexylamino)-2- arylimidazo[1,2-a]pyridine-8-carboxylic acids in high yields. In a three component condensation reaction, isocyanide reacts with 2-aminopyridine-3-carboxylic acid and aromatic aldehydes without any prior activation. Material and Methods: The synthesized products have stable structures which have been characterized by IR, 1H, 13C and Mass spectroscopy as well as CHN-O analysis. Results: In continuation of our attempts to develop simple one-pot routes for the synthesis of 3- (cyclohexylamino)-2-arylimidazo[1,2-a]pyridine-8-carboxylic acids, aromatic aldehydes with divers substituted show a high performance. Conclusion: In conclusion, this study introduces the art of combinatorial chemistry using a simple one-pot procedure for the synthesis of new materials which are interesting compounds in medicinal and biological sciences.

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