14467-64-2Relevant academic research and scientific papers
One High-Nuclearity Cd(II)-Yb(III) Nanoring with Near-IR Luminescent Sensing to Antibiotics
Ma, Yanan,Yang, Xiaoping,Shi, Dongliang,Niu, Mengyu,Schipper, Desmond
, p. 16809 - 16813 (2020)
One 12-metal Cd(II)-Yb(III) nanoring, [Cd8Yb4L8(OAc)8]·4OH (1), with a size of 1.2 × 2.8 × 2.8 nm was obtained from a designed flexible salen-type ligand that has eight coordination sites (O and N atoms). The near-IR emission of Yb(III) at 983 nm was detected upon the excitation of ligand-central absorption at 386 nm. This Cd(II)-Yb(III) nanoring exhibits high sensitivity to nitrofuran antibiotics (NFAs) even in the presence of other antibiotics. The quenching constants and limits of detection of NFAs are 2.5 × 104-4.5 × 104 M-1 and 1.5-2.8 μM, respectively.
High-Nuclearity Cd(II)-Nd(III) Nanowheel with NIR Emission Sensing of Metal Cations and Nitro-Based Explosives
Ma, Yanan,Yang, Xiaoping,Niu, Mengyu,Hao, Wenxin,Shi, Dongliang,Schipper, Desmond
, p. 2821 - 2827 (2021)
One Cd-Nd nanowheel [Cd8Nd4L8(OAc)8]·4OH (1, molecular sizes: 1.2 × 2.8 × 2.8 nm) was obtained by using one designed flexible Schiff base ligand containing eight coordination sites. The Schiff base ligand exhibits a hexadentate η1:η2:η1:η1:η2:η1:μ4 coordination mode. The chromogenic Cd/L components are able to transfer energy to Nd(III), leading to the near-infrared (NIR) lanthanide emission of 1. The energy transfer efficiency (ηsens) is calculated to be 39.4%. 1 shows interesting luminescent sensing activity toward metal cations and nitro-based explosives, in particular to Cu(II), Fe(III), Co(II), and 2,4,6-trinitrophenol (TNP) with high sensitivity. The quenching constants of the complex toward Cu(II), Fe(III), Co(II), and TNP respectively are 8.6 × 104, 6.8 × 104, 6.5 × 104, and 2.1 × 105 M-1. The luminescent sensing of the nanowheel to metal cations is able to be explained by chelation enhancement of the quenching (CHEQ) effect, and its high selectivityto TNP is caused by the photoinduced electron transfer process and inner filter effect , even with the existence of other nitro-based explosives.
Facile one-pot synthesis of aliphatic bridged diaryloxy compounds, cyclic and crown ethers under mild conditions
Sakate, Sachin,Kamble, Sumit,Chikate, Rajiv,Rode, Chandrashekhar
, p. 462 - 470 (2017/03/27)
We report here the facile, room temperature, catalyst free, one pot synthesis of aliphatic bridged diaryloxy compounds, cyclic and crown ethers. Anhydrous potassium carbonate (K2CO3) as a mild base along with dimethyl sulfoxide gener
Synthesis, characterization, tautomerism and theoretical study of some new Schiff base derivatives
Türkolu, Gülen,Berber, Halil,Dal, Hakan,?retir, Cemil
scheme or table, p. 1573 - 1583 (2011/10/03)
New Schiff base derivatives were prepared by the condensation of 5-chloro and 5-bromo salicylaldehyde with bis(o-aminophenol)ethers. Five bis(o-nitrophenol)ether compounds were synthesized using some ditosylate, 1,3-dibromopropane and 1,4-dibromobuthane w
SYNTHESIS OF BAPTA-AM ANALOGUES CAPABLE OF ENHANCING THE VASCULAR PRODUCTION OF PROSTACYCLIN
Heilporn, S.,Broeders, F.,Daloze, D.,Braekman, J. C.,Boeynaems, J. M.
, p. 309 - 320 (2007/10/02)
About 30 analogues of BAPTA-AM, a potential antithrombotic agent, have been synthesized and tested for their effect on the production of prostacyclin.None of them was found to be a better enhancher of the production of prostacyclin by aortic endothelial cells than BAPTA-AM itself.The enhancing effect can be produced by compounds unable to chelate Ca2+, thus confirming that it is not related to their buffering capacity for free Ca2+.
Structural Effect on Chelation Selectivity of Alkaline Earth Metal Ions with Aminopolycarboxylate-Type Chelators
Kimura, Takahide,Maruyama, Tetsushi,Okamura, Mutsuo,Sugiyama, Takashi,Ando, Takashi,Ohno, Atsuyoshi
, p. 1615 - 1621 (2007/10/02)
Two derivatives of 1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (H4bapta), in which the distance between the chelating functions is changed, have been synthesized.The structure-interaction relationships of their complexation behavior with alka
Dipole Moments and UV Spectra of some Long-chain Molecules
Baliah, V.,Aparajithan, K.
, p. 255 - 259 (2007/10/02)
About one hundred compounds with long-chain molecular structure have been prepared (most of them are new).The dipole moments of four α,ω-bis(p-methoxyphenylthio)alkanes and five α,ω-bis(p-methoxyphenylsulphonyl)alkanes have been determined to find the effect of chain-length.In the case of sulphones, the observed values are compared with the values calculated for free rotation around all bonds intervening the end dipoles.The uv spectra of some 1,2-(distyrylsulphonyl)ethanes, and a number of α,ω-bis(arylsulphonyl)- and α,ω-bis(aryloxy)alkanes have been recorded to examine the applicability of the principle of chromophore additivity.
CHROMOGENIC CORONANDS. I. C-ARYLCROWN-FORMAZANS OF THE DO-, TRI-, TETRA-, PENTA-, HEXA-, HEPTA-, AND NONANEDECYNE AND DOCOSYNE SERIES
Ostrovskaya, V. M.,D'yakonova, I. A.,Poponova, R. V.,Kozlova, N. P.,Ryabokobylko, Yu. S.,Filatova, M. P.
, p. 1583 - 1588 (2007/10/02)
The 12- to 22-membered dibenzodi(oligo)oxatetraazacoronands containing a crown-ether fragment and an endocyclic C-arylformazan group (C-arylcrown-formazans) in the ring were obtained by template and nontemplate bisazocoupling of bisdiazotized bis(2-aminoa
