73171-36-5Relevant academic research and scientific papers
Computational and experimental characterization of a fluorescent dye for detection of potassium ion concentration
Tanha, Matteus,Chakraborty, Subhasish K.,Gabris, Beth,Waggoner, Alan S.,Salama, Guy,Yaron, David
, p. 9837 - 9843 (2015/02/19)
The fluorescence of the SKC-513 ((E)-N-(9-(4-(1,4,7,10,13-pentaoxa-16-azacyclooctadecan-16-yl)phenyl)-6-(butyl(3-sulfopropyl)amino)-3H-xanthen-3-ylidene)-N-(3-sulfopropyl)butan-1-aminium) dye is shown experimentally to have high sensitivity to binding of
On the ion-pair recognition and indication features of a fluorescent heteroditopic host based on a BODIPY core
Gotor, Raul,Costero, Ana M.,Gil, Salvador,Gavina, Pablo,Rurack, Knut
, p. 4005 - 4013 (2014/07/08)
A fluorescent heteroditopic host for ion pairs and zwitterionic species has been synthesized. Its affinity towards a series of anions, cations and ion pairs in acetonitrile has been assessed, and the spectroscopic response has been evaluated. Solid-liquid extraction experiments of inorganic salts, α-amino acids and γ-aminobutyric acid (GABA) into acetonitrile solutions were performed, and the resulting complexes were analyzed by UV/Vis absorption, fluorescence and 1H NMR spectroscopy. The discrimination patterns observed have been rationalized in terms of the molecular topologies of the host and guests. Catching two balls: A BODIPY derivative bearing two independent yet complimentary hosts for anions and cations displays distinct absorption and fluorescence signalling patterns for different alkali metal halides. The compound also recognizes zwitterionic compounds such as amino acids and γ-aminobutyric acid (GABA). Copyright
Aggregation induced emission in the rotatable molecules: The essential role of molecular interaction
Yu, Zhipeng,Duan, Yaya,Cheng, Longhuai,Han, Zhili,Zheng, Zheng,Zhou, Hongping,Wu, Jieying,Tian, Yupeng
, p. 16927 - 16932 (2012/11/07)
Aggregation-induced emission (AIE) compounds, dye2 and dye3, with a rotatable N-N single bond and aza-crown-ether, have been synthesized. The fluorescence intensities of both dyes are very weak in THF, while become extraordinarily strong in a mixture of H2O-THF (v/v 95%). They are increased by 88.9 and 70.7 times, respectively, indicating enhanced blue-green fluorescence emissions. The λem of these two compounds in different states has been well studied. Besides this, dye1 and dye2 were characterized by single crystal X-ray structural determination. The results show that molecular interactions are formed in the particles, which considerably restrict the intramolecular vibration and rotation. The Royal Society of Chemistry 2012.
Buffering heavy metal ions with photoactive CrownCast cages
Mbatia, Hannah W.,Kennedy, Daniel P.,Camire, Casey E.,Incarvito, Christopher D.,Burdette, Shawn C.
experimental part, p. 5069 - 5078 (2011/02/17)
Historically, caged compounds have been used to interrogate the biological activity of organic molecules by using light; however, R. Tsien and others have developed methodologies over the last three decades for using nitrobenzyl-derived caged complexes to
N-Methylbenzoazacrown ethers with the nitrogen atom conjugated with the benzene ring: The improved synthesis and the reasons for the high stability of complexes with metal and ammonium cations
Gromov, Sergey P.,Dmitrieva, Svetlana N.,Vedernikov, Artem I.,Kurchavov, Nikolay A.,Kuz'Mina, Lyudmila G.,Strelenko, Yuri A.,Alfimov, Michael V.,Howard, Judith A. K.
scheme or table, p. 823 - 833 (2010/06/16)
An improved method for the synthesis of formyl derivatives of N - Methylbenzoazacrown ethers is proposed. They are prepared in up to 68% yields over fewer steps and with a much shorter time required for the last step. The stability constants of complexes formed by N-methylbenzoazacrown ethers and their structural analogs with alkali metal, alkaline - Earth metal and ammonium cations were determined by 1H NMR titration in CD3CN. High stability of complexes of N-methyl derivatives of benzoazacrown ethers is demonstrated, comparable with or even exceeding the stability of benzocrown-ether complexes and markedly exceeding the stability of complexes of phenylazacrown ethers with the same macrocycle size. The structures of azacrown ethers and their complexes with Ba(ClO4)2 were studied by X-ray diffraction. A high degree of pre-organization of N - Methylbenzoazacrown ethers toward the formation of complexes with metal and ammonium cations was noted, which is due to the clear-cut pyramidal geometry of the nitrogen atom and the orientation of the lone electron pairs (LEPs) of most heteroatoms towards the centre of the macroheterocycle. Copyright
Ligand Structure and Complexation, L. Ion-selective Crown Ether Dyes
Dix, Johannes Peter,Voegtle, Fritz
, p. 457 - 470 (2007/10/02)
New dyes with an ion-selective crown ether system, the complexation of which with cations influences the ground and excited states of the chromophore to a different extent, have been synthesized.Different types of alkali/alkaline earth metal ions cause different colour changes, significant effects being normally observed with cations fitting selectively into the crown ether units with cromophores of azo dyes (1-3, 8a, b, 22, 24), naphthol blue (10), phenol blue (11), stilbene dyes (14a, b), (mero)cyanines (16, 17a, b), and of Koenig's salt (19, 20).Chromophores bound to open chain oligoethylene glycol ethers are also described.The remarkable changes of light absorption in the course of complexation of some of the dyes are discussed in terms of donor participation of the auxochrome or antiauxochrome.
