a new cesium ion selective pvc membrane based on parent calix [4] arene was developed for potentiometric determination of cesium in environmental samples. the electrode based on p-5,11,17,23tetra(tertbutyl) 25,26,27,28-tetrahydroxy calix[4]arene(thc) as ionophor ,dibutyl phthalate (dbp)as plasticizer ,sodium tetra phenyl borate(natpb)and oleic acid as lipophilic salt and additive showed the bes...

Planar chiral h6-arene chromium(0) complexes are finding increasing application in the synthesis of enantioenriched compounds by serving as enantiopure starting materials or ligands for catalytic asymmetric processes.[1,2] Whereas early methods of generating enantiopure 1,2-disubstituted h6-arene chromium(0) complexes relied on resolution of racemates,[3] many methods have been developed recent...

The mononuclear g-cyclopentadienyl complexes [(g-C5H5)Ru(PPh3)2Cl], [(g-C5H5)Os(PPh3)2Br] and pentamethylcyclopentadienyl complex [(g-C Me )Ru(PPh ) Cl] react in the presence of 1 eq. of the 5 is(2-py g-C5H 3)(bppC5Me5)R xes [(g e of NH 6 ([4]P rC6H4M ion wit ]BF4 ([8 en cha r struct ies and tetradentate N,N0-chelating ligand 3,5-b to afford the mononuclear complexes [( H)]PF6 ([2]PF6) and [(g-...

Tris-(N-phenylureido)-calix[6]arene derivatives are heteroditopic non-symmetric molecular hosts that can form pseudorotaxane complexes with 4,4'-bipyridinium-type guests. Owing to the unique structural features and recognition properties of the calix[6]arene wheel, these systems are of interest for the design and synthesis of novel molecular devices and machines. We envisaged that the incorpora...

Surface organic ligands are critical for the formation and properties of atomically precise metal nanoclusters. In contrast to the conventionally used protective ligands such as thiolates and phosphines, thiacalix[4]arene has been used in the synthesis of a silver nanocluster, [Ag35(H2L)2(L)(C≡CBu(t))16](SbF6)3, (H4L, p-tert-butylthiacalix[4]-arene). This is the first structurally determined ca...

A new water-soluble pillar[5]arene containing ten imidazolium groups was prepared. It can be used as a stabilizer to fabricate gold nanoparticles smaller than 6 nm in water.

A UV-responsive supra-amphiphile based on a water-soluble pillar[6]arene was constructed. Its self-assembly and application in dispersion of multi-walled carbon nanotubes in water were studied.