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Supramolecular Host Materials

 Host-compounds recognize and incorporate specific molecules, atoms or ions (guests) into the molecules to form complexes. In the formation of these complexes, a variety of forces such as electrostatic interaction, hydrophobic interaction, hydrogen bonding, etc. are utilized to create high selectivity. Molecular sensors, synthetic enzymes, separation systems, etc. utilize the high guest selectivity of these host compounds. Synthesis of new host compounds with even higher selectivity are currently being developed.
 For example, Shinkai and co-workers have developed exciting purification techniques for fullerene C60 employing calixarene. According to these techniques, the stirring of crude fullerene and tert-butylcalix[8]arene in toluene causes only C60 to be incorporated in the calixarene to form and precipitate a complex. Filtration and subsequent stirring of the complex in chloroform cause it to decompose to yield C60 of high purity as a precipitate. This method has been reported to be an efficient purification technique in obtaining C60 compared with conventional column purification techniques.

Cycloparaphenylenes

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Pillararenes

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Thiacalixarenes

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Calixarenes

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Crown Ethers

A1323
1-Aza-15-crown 5-Ether
A1324
1-Aza-18-crown 6-Ether
A1404
4'-Aminobenzo-15-crown 5-Ether
A1552
1-Aza-12-crown 4-Ether
A1603
4'-Acetylbenzo-15-crown 5-Ether
A1604
4'-Acetylbenzo-18-crown 6-Ether
B1154
Benzo-15-crown 5-Ether
B1249
Benzo-12-crown 4-Ether
B1539
Benzo-18-crown 6-Ether
B2181
4'-Bromobenzo-18-crown 6-Ether
B2189
4'-Bromobenzo-15-crown 5-Ether
B2245
Bis(1,4-phenylene)-34-crown 10-Ether
C0858
12-Crown 4-Ether
C0859
15-Crown 5-Ether
C0860
18-Crown 6-Ether
C1713
4'-Carboxybenzo-15-crown 5-Ether
C1714
4'-Carboxybenzo-18-crown 6-Ether
C1736
24-Crown 8-Ether
C1942
15-Crown-4 [4-(2,4-Dinitrophenylazo)phenol]
C1943
18-Crown-5 [4-(2,4-Dinitrophenylazo)phenol]
D1533
Dibenzo-18-crown 6-Ether
D1668
Dicyclohexano-18-crown 6-Ether
D1830
Dibenzo-24-crown 8-Ether
D2321
N,N'-Dibenzyl-4,13-diaza-18-crown 6-Ether
D2323
4,13-Diaza-18-crown 6-Ether
D2684
Dibenzo-30-crown 10-Ether
D2743
4,10-Diaza-12-crown 4-Ether
D2744
4,10-Diaza-15-crown 5-Ether
D2877
Dibenzo-15-crown 5-Ether
D2878
Dibenzo-21-crown 7-Ether
F0448
4'-Formylbenzo-15-crown 5-Ether
F0451
4'-Formylbenzo-18-crown 6-Ether
H0932
4,7,13,16,21,24-Hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane
H0982
2-(Hydroxymethyl)-12-crown 4-Ether
H0983
2-(Hydroxymethyl)-15-crown 5-Ether
H0990
2-(Hydroxymethyl)-18-crown 6-Ether
H1215
1,4,7,10,13,16-Hexaazacyclooctadecane Hexahydrochloride
I1043
Icosafluoro-15-crown 5-Ether
N0561
4'-Nitrobenzo-15-crown 5-Ether
N0562
4'-Nitrobenzo-18-crown 6-Ether
P1143
N-Phenylaza-15-crown 5-Ether
T1426
1,4,7,10-Tetraazacyclododecane Tetrahydrochloride
T1597
1,4,8,11-Tetraazacyclotetradecane
T1600
1,4,7-Triazacyclononane Trihydrochloride
T1691
1,4,8,12-Tetraazacyclopentadecane
T1874
1,4,7,10-Tetraazacyclododecane
T1875
1,4,7,10-Tetraazacyclododecane-1,4,7,10-tetraacetic Acid
T1876
1,5,9-Triazacyclododecane
T1877
1,4,8,11-Tetramethyl-1,4,8,11-tetraazacyclotetradecane
T1878
1,4,7-Triazacyclononane
T1879
1,4,7-Trimethyl-1,4,7-triazacyclononane (stabilized with NaHCO3)
T1959
1,4,8,11-Tetrathiacyclotetradecane
T1972
1,4,7-Trithiacyclononane
T2540
Tetraethyl 1,4,8,11-Tetraazacyclotetradecane-1,4,8,11-tetraacetate
T2541
Tri-tert-butyl 1,4,7,10-Tetraazacyclododecane-1,4,7-triacetate
T2642
Tri-tert-butyl 1,4,7,10-Tetraazacyclododecane-1,4,7,10-tetraacetate
T3356
1,4,7,10-Tetrabenzyl-1,4,7,10-tetraazacyclododecane

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Cyclodextrins

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Cyclophanes

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