(Co)polymers containing boron difluoride 3-cyanoformazanate complexes: emission enhancement via random copolymerization

Abstract

Synthesis and photophysical characterization of (co)polymers containing an asymmetrically substituted BF2complex of a 3-cyanoformazanate ligand are reported.

Random copolymerization of l‐lactide and ε‐caprolactone by aluminum alkoxide complexes supported by N2O2 bis(phenolate)‐amine ligands

“…Glass transition temperature ( T g ) and melting temperature ( T m ) of the copolymers are very dependent on the monomer distribution in the polymer chains. For instance, a block copolymer usually has two T g , while a random copolymer has only one T g which can be predicted by the Fox equation . The variations on copolymer compositions from LA: ε‐CL of 10:90 to 90:10 were carried out as shown in Table .…”

Reactivity of Two-Electron-Reduced Boron Formazanate Compounds with Electrophiles: Facile N–H/N–C Bond Homolysis Due to the Formation of Stable Ligand Radicals

“…Concurrent with our work, the Gilroy group and others have reported related complexes with formazanate ligands and studied the properties of these compounds 30 , 31 and materials derived thereof. 32 Previously, we studied ligand-based reductions in boron formazanate compounds and showed that both one- and two-electron-reduced products can be obtained ( Scheme 1 ). 33 For the boron difluoride derivative, two-electron reduction leads to the elimination of 2 equiv of F – and the formation of a boron carbenoid intermediate, the fate of which is ultimately a series of B 3 N 3 heterocyclic products that incorporate the boron formazanate fragment ( Scheme 1 ).…”

Structure and bonding in reduced boron and aluminium complexes with formazanate ligands

“…[5][6][7][8] Taking inspiration from this work, our group has explored the coordination chemistry, redox behavior and reactivity of complexes with formazanate ligands. [9][10][11][12][13][14][15][16] Along with our work, the Gilroy group [17][18][19][20][21][22][23][24][25][26] and others [27][28][29] have been involved in the synthesis and application of new molecular complexes with formazanate ligands. Previously, we showed that the ligands in boron and aluminum compounds with formazanate ligands could be sequentially reduced by 1-and 2-electrons at moderate reduction potentials (Scheme 1).…”