Synthesis and characterization of new polystyrenes containing tributyltin moieties linked to the aromatic ring through a methylenic spacer

Abstract

Novel polymeric derivatives bearing tributyltin carboxylate moieties in the side chain were synthesized. The coordination at tin in solution and in the solid state was investigated by both Sn-NMR and FT-IR: the metal atom appears completely tetracoordinated in chloroform solution, while in the solid state all polymeric products exhibit both tetra-and pentacoordination at tin, the latter increasing with the amount of tin containing units. No evidence of tin leaching by hydrolysis of the organometallic ester was observed for these materials.

Triorganotin 4-isopropylbenzoates as model transesterification catalysts for triorganotin carboxylates grafted to cross-linked polystyrene

“…These thermal transitions can be referred to melting and subsequent crystallization of crystalline domains induced by pentacoordinated tin, as previously reported [26,33]. The same pattern is present in a second heating cycle, with melting enthalpy close to the values found in the first one, evidencing the complete reversibility of the transition.…”

Functionalization of Polymers with High Precision by Dual Regio- and Stereoselective Enzymatic Reactions

“…All copolymers were prepared following a modified literature procedure . The degassed monomer mixture (3 mL) and freshly recrystallized AIBN (1% w/w) were dissolved in anhydrous THF (20 mL) in a sealed vial under nitrogen.…”

“…All copolymers were prepared following a modified literature procedure. 29 The degassed monomer mixture (3 mL) and freshly recrystallized AIBN (1% w/w) were dissolved in anhydrous THF (20 mL) in a sealed vial under nitrogen. The copolymers were prepared using differing ratios of MSA, SEA, or StHex to styrene to obtain a molar feed composition of 10%, 30%, or 40%.…”

Nanocarrier-Based Biological Fluorescent Probes for Simultaneous Detection of Ketamine and Amphetamine in Latent Fingermarks

“…The C¼O stretching vibration (1710 cm À1 Þ, O-H bending vibration (1400 cm À1 Þ and C-O stretching vibration (1190 cm À1 Þ indicate the presence of carboxyl groups modi¯ed on the surface of polystyrene nanoparticles. [16][17][18] As shown in Curves B and E of Fig. 3, the major functional groups of anti-ketamine antibody and antiamphetamine antibody are amide I band (1660 cm À1 ), due to C¼O stretching vibration, and amide II band (1530 cm À1 Þ, denoting a combination of N-H bending and C-N stretching.…”