[EN] BORONIC ACID APPENDED NAPHTHYL-PYRIDINIUM FLUORESCENT SACCHARIDE SENSORS FOR EARLY DETECTION OF GASTROINTESTINAL DISEASES [FR] CAPTEURS DE SACCHARIDES FLUORESCENTS DE NAPHTYLE-PYRIDINIUM AJOUTÉS À L'ACIDE BORONIQUE POUR LA DÉTECTION PRÉCOCE DE MALADIES GASTRO-INTESTINALES
A new [2]catenane containing four Rh(III) porphyrins has been prepared following a three-step strategy: (i) Cu(I)-driven entwining of two free base porphyrin-bearing bidentate chelates, followed by (ii) insertion of rhodium in the porphyrin nuclei, and finally (iii) cyclisation via the formation of N–Rh coordination bonds. Direct metalation of porphyrinic compounds with [Rh(CO)2Cl]2 was not met with
Electrochromic compound, electrochromic composition, and display element
申请人:Sagisaka Toshiya
公开号:US10626133B2
公开(公告)日:2020-04-21
To provide an electrochromic compound, represented by the following general formula
where X1, X2, X3, X4, X5, X6, X7 and X8 are each independently a hydrogen atom or a monovalent substituent; R1 and R2 are each independently a monovalent substituent; A− and B− are each independently a monovalent anion; and Y is represented by the following general formula (II) or (III):
where X9, X10, X11, X12, X13, X14, X15, X16, X17, and X18 are each independently a hydrogen atom or a monovalent substituent.
Non covalent [2]catenanes were synthesized in high yield as kinetic products or as thermodynamic products after completion of an equilibrium. These sophisticated architectures were assembled in two steps, from an oblique bis-zinc(II) porphyrin and two different dipyridyl chelates, by using Cu(I)-N interactions to assemble acyclic complexes and Zn(II)-N interactions to generate rings. H-1 NMR including 2D COSY and ROESY experiments were used to characterize each compound. Spectrophotometric titrations highlight the influence of geometry in terms of distances and angles in non covalent coordinated assemblies. In fact, it was proved that a perfect fit leads to highly stable coordination chemistry-assembled species.
ELECTROCHROMIC COMPOUND, ELECTROCHROMIC COMPOSITION, AND DISPLAY ELEMENT
申请人:Ricoh Company, Ltd.
公开号:EP2914608B1
公开(公告)日:2017-01-04
BORONIC ACID APPENDED NAPHTHYL-PYRIDINIUM FLUORESCENT SACCHARIDE SENSORS FOR EARLY DETECTION OF GASTROINTESTINAL DISEASES
申请人:The Board of Trustees of the Leland Stanford Junior University
公开号:US20210364437A1
公开(公告)日:2021-11-25
The present disclosure relates to novel boronic acid receptor compounds and their use in methods of quantifying a saccharide appearing in a sample. Provided are methods of measuring the concentration of a saccharide in a sample as well as methods of measuring the concentration of a halogenated saccharide in a sample. In certain aspects the sample is abiological sample and the methods further include correlating the measured concentration of saccharide in the biological sample to the gastrointestinal permeability in the individual. Disclosed are also kits for performing the above methods.