نتایج جستجو برای: fluorescent properties

تعداد نتایج: 949634  

Journal: :Bioconjugate chemistry 2010
Sónia Pérez-Rentero Nicola Kielland Montserrat Terrazas Rodolfo Lavilla Ramon Eritja

Oligonucleotides carrying novel fluorescent compounds with a dipolar isoquinoline imidazo[1,2-a]azine core were prepared. Analysis of the melting curves demonstrates that DNA duplexes carrying these fluorescent labels at their ends have a slight increase in DNA duplex stability. The UV absorption and fluorescent properties of the oligonucleotide conjugates were analyzed. The fluorescent label i...

Journal: :Biomedical optics express 2018
Qiqi Sun Zhongya Qin Wanjie Wu Yue Lin Congping Chen Sicong He Xuesong Li Zhenguo Wu Yi Luo Jianan Y Qu

Femtosecond laser microsurgery has become an advanced method for clinical procedures and biological research. The tissue treated by femtosecond laser can become highly fluorescent, indicating the formation of new fluorescent compounds that can naturally label the treated tissue site. We systematically characterized the fluorescence signals produced by femtosecond laser ablation in biological ti...

2014
Ellen M. Sletten Timothy M. Swager

"Fluoro" refers to both fluorescent and fluorinated compounds. Despite the shared prefix, there are very few fluorescent molecules that are soluble in perfluorinated solvents. This paucity is surprising, given that optical microscopy is a ubiquitous technique throughout the physical sciences and the orthogonality of fluorous materials is a commonly exploited strategy in synthetic chemistry, mat...

Objective(s): First, 10-bromodecanoic acid was covalently attached to all available surface primary amines of PPI G2 and G3 to increase their lipophilicity. In the subsequent step, PPIs were conjugated to the alkylcarboxylate groups of alkylcarboxylate-PPI derivatives to increase the number of surface primary amines. Physicochemical properties of modified PPIs were determined. Transfection expe...

Journal: :Chemistry 2009
Mikhail Y Berezin Jeff Kao Samuel Achilefu

An imidazole moiety is often found as an integral part of fluorophores in a variety of fluorescent proteins and many such proteins display pH-dependent light emission. In contrast, synthetic fluorescent compounds with incorporated imidazoles are rare and have not been studied as pH probes. In this report, the richness of imidazole optical properties, including pH sensitivity, was demonstrated b...

Journal: :The journal of physical chemistry. B 2005
Tong-Ing Ho Arumugasamy Elangovan Hsien-Yi Hsu Shu-Wen Yang

A new family of aryl-pi-donor-aryl molecules has been synthesized and studied with respect to their photophysical properties and electrogenerated chemiluminscence (ECL) for the first time. Anthracene, phenanthrene, naphthalene, biphenyl, and fluorene were coupled with N,N-dimethylanilino moiety via a C-C triple bond (1-7). Introduction of such a strong electron-donating moiety as N,N-dimethylan...

Journal: :Journal of the American Oil Chemists' Society 1974
S P Koltun H K Gardner F G Dollear E T Rayner

The density and aflatoxin content of individual cateye fluorescent cottonseeds have been investigated. In general, higher average levels of aflatoxin contamination were found among the lower density seeds. However, significant amounts of aflatoxins were detected in a few of the higher density seeds. Subjective evaluation of color and texture of dissected kernels indicated a predominance of poor...

Journal: :Biochemical Society transactions 2013
Martin Cottet Orestis Faklaris Amadine Falco Eric Trinquet Jean-Philippe Pin Bernard Mouillac Thierry Durroux

Fluorescent ligands for GPCRs (G-protein-coupled receptors) have been synthesized for a long time but their use was usually restricted to receptor localization in the cell by fluorescent imaging microscopy. During the last two decades, the emergence of new fluorescence-based strategies and the concomitant development of fluorescent measurement apparatus have dramatically widened the use of fluo...

Journal: :Organic & biomolecular chemistry 2013
Kristmann Gislason Dnyaneshwar B Gophane Snorri Th Sigurdsson

Nine fluorescent 5'-6-locked nucleosides were synthesized by condensation of various 1,2-diketones with 5-amino-2'-deoxycytidine. The nucleosides have different substituents on the pyrazine core structure, ranging from two methyl groups to polyaromatic rings. The photophysical properties of each nucleoside were determined, with the nucleosides displaying diverse absorption and emission maxima, ...

2016
A. N. Dagang E. I. Ismail Z. Zakaria

This paper presents the analysis on the performance of monopole antenna with fluorescent tubes. In this research, the simulation and experimental approach is conducted. The fluorescent tube with different length and size is designed using Computer Simulation Technology (CST) software and the characteristics of antenna parameter are simulated throughout the software. CST was used to simulate ant...

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