Synthesis of mono-substituted 2,2′-bipyridinesElectronic supplementary information (ESI) available: experimental details and full characterization of new compounds. See http://www.rsc.org/suppdata/cc/b2/b203595b/
Synthesis of mono-substituted 2,2′-bipyridinesElectronic supplementary information (ESI) available: experimental details and full characterization of new compounds. See http://www.rsc.org/suppdata/cc/b2/b203595b/
A bis-terpyridine monomer includes a first terpyridyl substituent (A), a second terpyridyl substituent (B), and a spacer that contains at least one benzene ring and links the first terpyridyl substituent (A) and the second terpyridyl substituent (B). The bis-terpyridine monomer is represented by the following formula (10):
where X
1
is a halogen; and R
1
, R
2
, R
3
and R
4
are each independently a halogen atom, an aryl group or an alkyl group.
New solid-state Eu(<scp>iii</scp>)-containing metallo-supramolecular polymers: morphology control and optical wave-guiding properties
作者:Andre Duerrbeck、Sergey Gorelik、Jonathan Hobley、Anna Marie Yong、Gomathy Sandhya Subramanian、Andy Hor、Nicholas Long
DOI:10.1039/c5tc01703c
日期:——
Herein, we report the solution phase self-assembly between Eu(III) and a rigid ditopic tridentate terpyridine ligand which results in the formation of supramolecular metallo-networks in the solid state. Depending on the ligand to metal ratio used for the initial self-assembly process, the morphology of these materials can be altered from one-dimensional micron-sized fibres to a three-dimensional coordination
A detailed description is provided for a new general approach that allows production of amplified amounts of effective noncovalent binders from pools of compounds that can exist in a dynamic equilibrium. This approach involves a) selective binding of the effective pool components by the immobilized target compound; b) equilibration of the pool remaining after selection, and thereby regeneration of the effective components; c) repetition of the selection-equilibration cycles. It represents a new automated, implementation of a genetic algorithm/mechanism in a chemical system. Application of the approach to the generation of arginine binders involved the synthesis and screening of eight compounds, each of which was capable of forming a pool of three isomers (trans,trans, trans,cis, and cis,cis) that could be interconverted by photoisomerization. These compounds were screened for their affinity for, or selectivity of binding to, guanidinium derivatives. The most promising compound was then used in our method to generate an amplified amount of the cis,cis isomer, the strongest binder from the equilibrating pool. The receptors were selected using an arginine derivative immobilized on the modified silica gel support, which had been found to possess binding affinity and selectivity similar to those of guanidinium salts in solution. Mathematical models of the approach were developed that allowed us to evaluate the importance of various experimental parameters and to assess the applicability of the method to larger combinatorial pools.
Supramolecular architectures constructed through self-assembly of a chalcone and substituted diazo-β-diketones
Organic compounds namely pyridyl chalcone viz. 3-[4-(3-oxo-3-pyridin-2-yl-propenyl)-phenyl]-1-pyridin-2-yl-propenone (L-1), p-cliolorophenyldiazopentane-2,4-dione (L-2) and p-methyl phenyidiazopentane-2,4-dione (L-3) have been characterized by their single-crystal X-ray crystallographic studies. Several structural motifs resulting upon their self-association through probable non-covalent interactions have been discussed. The studies of related motifs found in Cambridge Structural Database are performed and the results are related to the structural data obtained for crystal structures reported here in. (C) 2007 Elsevier B.V. All rights reserved.
Convenient Synthesis of<i>bis</i>-Bipyridines and<i>bis</i>-Terpyridines Bridged by Phenyl and Biphenyl Tethers
作者:Aaron I. Baba、Wei Wang、Wong Yong Kim、Laura Strong、Russell H. Schmehl
DOI:10.1080/00397919408020779
日期:1994.4
A simple three step Preparation of phenyl bridged bis-2,2'-bipyridine and bis- 2,2':6',2''-terpyridine from readily available reagents is described. The compounds have the potential to serve as rigid bridging ligands for the preparation of redox and photoactive supramolecular complexes of transition metals.