Synthesis, Crystal Structures and Fluorescence Properties of Two d10 Metal Coordination Polymers with Flexible Bis(benzimidazolyl)alkane Ligands

Abstract

Two d 10 metal coordination polymers with bis-benzimidazole ligands, [(Ag(L 1 have been synthesized hydrothermally and characterized by elemental analysis, IR spectroscopy, thermogravimetric (TG) analysis and single-crystal X-ray diffraction. Compound 1 features a ribbon-like chain structure bridged by L 1 ligands, and is ultimately extended into a 2D supramolecular network through two kinds of π-π stacking interactions. Compound 2 displays a (6,3) wave-like layer in which [Cu 6 (µ-CN) 6 (L 2 ) 2 ] n double chains are interconnected by pairs of L 2 bridges. The fluorescence properties of the compounds in the solid state at room temperature were investigated.

Engineered biosynthesis of natural products in heterologous hosts

“…The highest conversion rate and yield of 10-DT from 7-XDT reached 92% and 764 mg L À1 , respectively. 51 A xylosidase from Enterobacter sp. was discovered and heterologously expressed in yeast.…”

Advances in exploring alternative Taxol sources

“…M207,130) (PCT/CN2,008/000,618), and Enterobacter sp. (CGMCC 2,487), 32 have been reported to have the ability to convert XDT to DT. However, these strains generated low yields of DT (ranged from 0.23-0.76 mg mL À1 ), 32,33 which is probably due to the ubiquitously low enzyme levels in the native organisms.…”

“…(CGMCC 2,487), 32 have been reported to have the ability to convert XDT to DT. However, these strains generated low yields of DT (ranged from 0.23-0.76 mg mL À1 ), 32,33 which is probably due to the ubiquitously low enzyme levels in the native organisms. Recently, we have discovered and cloned the specic b-xylosidase genes from the fungus of Lentinula edodes, and the genes have been introduced into the yeast host Pichia pastoris.…”