scholarly journals Palladium-Catalyzed Direct Mono- and Diarylation of Diphenydithienylethenes: A Useful Method for Enhancing Fluorescence Intensity and Aggregation-Induced Emission

Molbank ◽  
10.3390/m1210 ◽  
2021 ◽  
Vol 2021 (2) ◽  
pp. M1210
Author(s):  
Thanh Thanh Le ◽  
Son Thai Phan ◽  
Hai Thi Hong Le ◽  
Hien Nguyen ◽  
Tung Thanh Dang ◽  
...  
Keyword(s):  
Organic Solvents ◽  
Fluorescence Intensity ◽  
Efficient Method ◽  
Luminescent Properties ◽  
Aggregation Induced Emission ◽  
Palladium Catalyzed

In this study we report efficient method for the syntheses of mono- and diarylated diphenyldithienylethene (DPDTE) via a palladium-catalyzed C–H arylation reaction. These new derivatives showed amplified luminescent properties thanks to a change in polarity, particularly in the presence of an electron-withdrawing groups (EWG). Moreover, the arylated DPDTEs showed dual-emissive phenomena, including fluorescence in organic solvents and aggregation-induced emission.

ChemInform Abstract: An Efficient Method for the Preparation of Tertiary Esters by Palladium-Catalyzed Alkoxycarbonylation of Aryl Bromides.

ChemInform ◽  
2012 ◽  
Vol 43 (19) ◽  
pp. no-no
Author(s):  
Zhuo Xin ◽  
Thomas M. Goegsig ◽  
Anders T. Lindhardt ◽  
Troels Skrydstrup
Keyword(s):  
Efficient Method ◽  
Aryl Bromides ◽  
Palladium Catalyzed

Flexible construction of cellulose photonic crystal optical sensing nano-materials detecting organic solvents

The Analyst ◽  
2019 ◽  
Vol 144 (6) ◽  
pp. 1892-1897 ◽  
Author(s):  
Dan Yan ◽  
Renbin Li ◽  
Wei Lu ◽  
Chunmei Piao ◽  
Lili Qiu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Polymethyl Methacrylate ◽  
Organic Solvents ◽  
Efficient Method ◽  
Carboxymethyl Cellulose ◽  
Optical Sensing ◽  
Inverse Opal ◽  
Nano Materials ◽  
Crystal Films ◽  
Colloidal Arrays

We developed a simple and efficient method to construct 3D and 2D opal and inverse opal cellulose photonic crystal films (CPCF) by embedding 3D or 2D polymethyl methacrylate (PMMA) colloidal arrays into carboxymethyl cellulose (CMC), respectively.

Diversity-Oriented Synthesis of Substituted Furo[2,3-b]pyrazines

2009 ◽  
Vol 62 (1) ◽  
pp. 27 ◽  
Author(s):  
Vaibhav P. Mehta ◽  
Sachin G. Modha ◽  
Denis Ermolat'ev ◽  
Kristof Van Hecke ◽  
Luc Van Meervelt ◽  
...  
Keyword(s):  
Efficient Method ◽  
Electrophilic Cyclization ◽  
Diversity Oriented Synthesis ◽  
Highly Efficient ◽  
Palladium Catalyzed ◽  
Catalyzed Reactions

A highly efficient method for the synthesis of diversely substituted furo[2,3-b]pyrazines has been elaborated. The Ag+- or iodine-mediated electrophilic cyclization of readily generated 5-chloro-3-substituted ethynyl-1-(4-methoxybenzyl)-pyrazin-2(1H)-ones affords substituted furo[2,3-b]pyrazines, which undergo various palladium catalyzed reactions to generate a library of difficult to attain diversely substituted furo[2,3-b]pyrazines.

A study of the effect of organic solvents on the fluorescence signal in a sequential injection analysis system

2014 ◽  
Vol 6 (23) ◽  
pp. 9392-9396
Author(s):  
P. Bolinová ◽  
I. Šrámková ◽  
H. Sklenářová ◽  
C. C. Acebal ◽  
B. S. Fernández Band ◽  
...  
Keyword(s):  
Organic Solvents ◽  
Fluorescence Intensity ◽  
Sequential Injection Analysis ◽  
Fluorescence Signal ◽  
Sequential Injection ◽  
Ph Adjustment ◽  
Metsulfuron Methyl ◽  
System P ◽  
Analysis System ◽  
Uv Decomposition

Effects of different solvents, pH adjustment and UV decomposition on the metsulfuron methyl fluorescence intensity were studied in a sequential injection analysis (SIA) system.

Microwave-assisted palladium mediated efficient synthesis of pyrazolo[3,4-b]pyridines, pyrazolo[3,4-b]quinolines, pyrazolo[1,5-a]pyrimidines and pyrazolo[1,5-a]quinazolines

RSC Advances ◽  
2014 ◽  
Vol 4 (46) ◽  
pp. 24001-24006 ◽  
Author(s):  
Kommuri Shekarrao ◽  
Partha Pratim Kaishap ◽  
Venkateshwarlu Saddanapu ◽  
Anthony Addlagatta ◽  
Sanjib Gogoi ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Efficient Method ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
Aryl Aldehydes ◽  
Microwave Assisted ◽  
Fused Heterocycles ◽  
Palladium Catalyzed ◽  
Solvent Free Reaction

An efficient method was developed for the synthesis of pyrazole fused heterocycles via the palladium-catalyzed solvent free reaction of β-halovinyl/aryl aldehydes and 3-aminopyrazoles/5-aminopyrazoles under microwave irradiation in good yields.

Infrared and Luminescent Properties of Mg (II) Fluorescence Materials

2011 ◽  
Vol 322 ◽  
pp. 412-415
Author(s):  
Li Hua Wang
Keyword(s):  
Infrared Spectrum ◽  
Organic Solvents ◽  
Luminescent Properties ◽  
Emission Peak ◽  
Luminous Intensity ◽  
Blue Luminescence ◽  
Luminescent Material ◽  
Fluorescent Material

A new luminescent material, 1-acetyl-2-naphthol-4, 4'-diaminodiphenyl ether Mg (II) has been designed, synthesized and characterized. The infrared spectrum and luminescent properties of Mg (II) material have been investigated. The results indicate that the Mg (II) fluorescent material emits blue luminescence with an emission peak at 455 nm when excited at 327 nm, and the effect of organic solvents on the luminous intensity of Mg (II) fluorescent material was arranged in the order CH3CH2OH > DMSO > solid> CH3OH.

A fluorescent “glue” of water triggered by hydrogen-bonding cross-linking

2016 ◽  
Vol 4 (47) ◽  
pp. 11050-11054 ◽  
Author(s):  
Dejia Wang ◽  
Hongwei Zhao ◽  
Hongjuan Li ◽  
Shiguo Sun ◽  
Yongqian Xu
Keyword(s):  
Hydrogen Bonding ◽  
Organic Solvents ◽  
Organic Molecule ◽  
Linear Range ◽  
Cross Linking ◽  
The Novel ◽  
Aggregation Induced Emission ◽  
Small Organic Molecule ◽  
Wide Linear Range ◽  
Trace Water

As a “glue” of water, a small organic molecule with the novel hydrogen-bonding cross-linked aggregation-induced emission (AIE) property was designed to detect trace water, displaying a wide linear range (0–40%, v/v) in most of the organic solvents.

Synthesis of 1H-indole-3-sulfonates via palladium-catalyzed tandem reactions of 2-alkynyl arylazides with sulfonic acids

2017 ◽  
Vol 15 (29) ◽  
pp. 6080-6083 ◽  
Author(s):  
Xiaoxiang Zhang ◽  
Ping Li ◽  
Chang Lyu ◽  
Wanxiong Yong ◽  
Jing Li ◽  
...  
Keyword(s):  
Efficient Method ◽  
Tandem Reactions ◽  
Sulfonic Acids ◽  
Palladium Catalyzed

An efficient method for the synthesis of 1H-indole-3-sulfonates via palladium-catalyzed tandem reactions of 2-alkynyl arylazides with sulfonic acids has been developed.

Sign in / Sign up

Export Citation Format

Share Document