Progress in host–guest macrocycle/pesticide research: Recognition, detection, release and application

Stimuli‐Responsive Complexation Based on Twisted Cucurbit[14]uril and p‐Diaminoazobenzene

“…Cucurbit[ n ]urils (Q[ n ]s) are a relatively new class of macrocycle that have exhibited great potential in the construction of advanced chemical systems through host–guest interactions [21‐28] . Kim and co‐workers designed and made a molecular device based on pseudorotaxane that could reversibly form a molecular loop by an intramolecular pairing of viologen radical cation units inside CB[8] in response to electrochemical and photochemical stimuli [29] .…”

Selected Tricyclic Fused Systems: Host Behavior in the Presence of Mixed Xylenes and Ethylbenzene

“…8,9 A myriad of advantageous applications of host−guest chemistry have been reported. For example, cyclodextrins feature prominently in pharmaceuticals where they function as efficient drug active carriers and stabilizers; 10 additionally, certain host compounds possess the ability to reduce the toxicity of pesticides, 11 while others behave as chemosensors in certain conditions. 12 A brief search of the literature on the employment of host− guest chemistry as an alternative separation protocol for difficult-to-separate mixtures such as xylenes and ethylbenzene resulted in an overwhelming number of review and research articles, in addition to encyclopedias and book chapters.…”

“…Host–guest chemistry, one category within the supramolecular chemistry realm, describes the event in which one molecule, normally the larger of the two (the host compound) encapsulates a guest species (typically the smaller of the two) within interstitial spaces in the host crystal. , A myriad of advantageous applications of host–guest chemistry have been reported. For example, cyclodextrins feature prominently in pharmaceuticals where they function as efficient drug active carriers and stabilizers; additionally, certain host compounds possess the ability to reduce the toxicity of pesticides, while others behave as chemosensors in certain conditions …”

Host–guest inclusion complexes formed between a symmetrical tetrasubstituted cucurbit[6]uril and glycine

“…12 In turn, this is leading to new methods of detection, sensing and delivery of the encapsulated guests. 13 In this area, the detection of amino acids (and peptides and proteins) has attracted attention, 14 and a number of early studies reported thermodynamic data using techniques such as calorimetric titrations and spectroscopic methods. 15,16 Results revealed the potential for the sensing of specific peptides, as well as an ability to discriminate amino acids from amine.…”