New conductive molecular composites: aniline derivatives as guest molecules encapsulated and polymerized within the channels of the host 3D-coordination polymers [(Me3E)3Fe(CN)6]∞ whereE=Sn or Pb

1998 ◽  
Vol 8 (4) ◽  
pp. 841-846 ◽  
Author(s):  
Amany M. A. Ibrahim
Keyword(s):  
Coordination Polymers ◽  
Guest Molecules ◽  
Aniline Derivatives ◽  
Molecular Composites

scholarly journals Structural diversity induced by ligand geometry: From two-dimensional to three-dimensional coordination polymers with pyridine

2020 ◽  
pp. 174751982096816
Author(s):  
Fang-Kuo Wang ◽  
Shi-Yao Yang ◽  
Hua-Ze Dong
Keyword(s):  
Coordination Polymers ◽  
Three Dimensional ◽  
Structural Diversity ◽  
Dimensional Structure ◽  
Layer By Layer ◽  
Two Dimensional ◽  
Guest Molecules ◽  
X Ray ◽  
Benzenedicarboxylic Acid ◽  
Benzenetricarboxylic Acid

Two coordination polymers with two-dimensional and three-dimensional structures are, {[Zn3(bdc)3(py)2]·2NMP}n (1) (H2bdc = 1,4-benzenedicarboxylic acid) and [Zn2(NO3−)(btc)(nmp)2(py)]n (2) (H3btc = 1,3,5-benzenetricarboxylic acid), synthesized by hot-solution reactions of Zn(NO3)2·6H2O, pyridine (py) and two different ligands in N-methylpyrrolidone (NMP). {[Zn3(bdc)3(py)2]·2NMP}n exhibits two-dimensional networks with trizinc subunits [Zn3(COO)6py2] stacking with a layer-by-layer alignment, and there are strong π–π interactions involving py from adjacent layers. [Zn2(NO3−)(btc)(nmp)2(py)]n has a three-dimensional structure containing two independent zinc ions, tetrahedral ZnO4 and octahedral ZnNO5. Based on X-ray studies, the coordination polymers {[Zn3(bdc)3(py)2]·2NMP}n (1) have a porous structure with NMP guest molecules. In contrast, X-ray studies revealed that coordination polymer [Zn2(NO3−)(btc)(nmp)2(py)]n (2) had a larger void that was inhabited by coordinated py and NMP. In addition, the form of the two coordination polymers changed from two-dimensional to three-dimensional with transformation of the ligand geometry.

Homochiral coordination polymers with nanotubular channels for enantioselective sorption of chiral guest molecules

2014 ◽  
Vol 38 (3) ◽  
pp. 880 ◽  
Author(s):  
Koichi Tanaka ◽  
Yuki Kikumoto ◽  
Naoki Hota ◽  
Hiroki Takahashi
Keyword(s):  
Coordination Polymers ◽  
Guest Molecules

scholarly journals Disappeared supramolecular isomer reappears with perylene guest

IUCrJ ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 324-330
Author(s):  
In-Hyeok Park ◽  
Atanu Dey ◽  
Kenta Sasaki ◽  
Masaaki Ohba ◽  
Shim Sung Lee ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Guest Molecule ◽  
Metal Organic Frameworks ◽  
Guest Molecules ◽  
Supramolecular Isomerism ◽  
The World ◽  
Different Types ◽  
Metal Organic ◽  
The Disappeared ◽  
Kinetic Form

Among different types of polymorphism, disappearing polymorphism deals with the metastable kinetic form which can not be reproduced after its first isolation. In the world of coordination polymers (CPs) and metal–organic frameworks (MOFs), despite the fact that many types of supramolecular isomerism exist, we are unaware of disappearing supramolecular isomerism akin to disappearing polymorphism. This work reports a MOF with dia topology that could not be reproduced, but subsequent synthesis yielded another supramolecular isomer, a double-pillared-layer MOF. When perylene was added in the same reaction, the disappeared dia MOF reappeared with perylene as a guest in the channels. Interestingly, the photoluminescence of the dia MOF with a perylene guest is dominated by the emission of the guest molecule. The influence of guest molecules on the stabilization of the supramolecular isomers of a MOF opens up a strategy to access MOFs with different structures.

Reorientational dynamics of organic cations in perovskite-like coordination polymers

2018 ◽  
Vol 47 (48) ◽  
pp. 17329-17341 ◽  
Author(s):  
M. Rok ◽  
G. Bator ◽  
W. Medycki ◽  
M. Zamponi ◽  
S. Balčiūnas ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Organic Cations ◽  
Guest Molecules ◽  
Reorientational Dynamics

Here we report the dynamics of organic cations as guest molecules in a perovskite host-framework.

The Formation of Molecular Composites by a Modified Solgel Process

1989 ◽  
Vol 155 ◽  
Author(s):  
Ronald B. Lessard ◽  
Mary M. Wallacet ◽  
W. Anthony Oertling ◽  
Chi K. Chang ◽  
Kris A. Berglund ◽  
...  
Keyword(s):  
Sol Gel ◽  
Hydrogen Ion ◽  
Processing Conditions ◽  
Guest Molecules ◽  
Molecular Composites ◽  
Sol Gel Synthesis ◽  
Gel Processing ◽  
Molecular And Electronic Structure ◽  
State Luminescence ◽  
Ceramic Matrices

ABSTRACTStandard sol-gel procedures have been modified to permit sol-gel synthesis to be performed at varying hydrogen ion concentrations and in a variety of organic solvents. These modifications greatly expand the variety of guest molecules that can be incorporated into nondense glassy environments. Processing conditions can be controlled such that the guest compounds generally retain their solution properties thereby allowing new molecular composites to be formed. Reported herein is the incorporation of both porphyrins and metalloporphyrins into silica matrices. Electronic absorption, vibrational, and excited state luminescence properties of the resulting composites clearly demonstrate that the molecular and electronic structure of the porphyrins and metalloporphyrins are preserved during sol-gel processing and in the ceramic matrices. This retention of properties has been shown for guest molecules doped into monoliths as well as films.

Coordination Polymers of Silver(I) with the Flexible Tritopic Ligand 1,3,5-Tri(4-cyanophenoxy)benzene: Guest Inclusion and Luminescent Properties

2013 ◽  
Vol 66 (4) ◽  
pp. 436 ◽  
Author(s):  
Sandipan Roy ◽  
Kumar Biradha
Keyword(s):  
Crystal Structures ◽  
Coordination Polymers ◽  
Three Dimensional ◽  
Luminescent Properties ◽  
Guest Molecules ◽  
Space Group ◽  
Centrosymmetric Space Group ◽  
Aromatic Guest

A new flexible tritopic ligand, 1,3,5-tri(4-cyanophenoxy)benzene (1), was synthesised by the reaction of phloroglucinol and para-fluorobenzonitrile. Compound 1 crystallises in the non-centrosymmetric space group Pna21. The reaction of ligand 1 with AgBF4 in the presence of different aromatic guest molecules was found to result in coordination polymers, namely, {[Ag3(1)2(BF4)3(H2O)2]·2C7H8·2CH2Cl2}n (2), {[Ag3(1)2(BF4)3(H2O)2]·2C6H6·2CH2Cl2}n (3). The crystal structures of 2 and 3 reveal that ligand 1 is linked by AgI ions into three-dimensional networks containing channels that are occupied by dichloromethane and aromatic guest molecules. The luminescent properties of crystalline 1 and 3 differ significantly.

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