TY - JOUR
T1 - Electrochemistry of redox active centres encapsulated by non-covalent methods
AU - Gadde, Suresh
AU - Batchelor, Elizabeth K.
AU - Kaifer, Angel E.
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - This manuscript presents a summary of recent research work on the electrochemical behaviour of redox active guests fully or almost fully encapsulated by suitable molecular receptors or molecular capsules. From the standpoint of their voltammetric behaviour the cyclodextrins have been shown to be very dynamic hosts, which hamper the observation of direct electron transfer to/from their inclusion complexes. Therefore, this Review is essentially concerned with research work on cucurbituril and cavitand-type hosts, which was mostly done in the author's laboratory. In general terms, the observed voltammetric behaviour for encapsulated guests covers a wide range of possibilities. Cucurbituril and cavitand-type hosts afford more kinetically stable complexes, whose direct electrochemical behaviour is observable and tends to be kinetically slower than that of the free guests. However, the degree of kinetic attenuation varies over a wide range and, in some cases, challenges our ability to rationalize the data. Clearly, more variation in the host structures and more research work are required to improve our understanding of encapsulation effects on these electron transfer reactions.
AB - This manuscript presents a summary of recent research work on the electrochemical behaviour of redox active guests fully or almost fully encapsulated by suitable molecular receptors or molecular capsules. From the standpoint of their voltammetric behaviour the cyclodextrins have been shown to be very dynamic hosts, which hamper the observation of direct electron transfer to/from their inclusion complexes. Therefore, this Review is essentially concerned with research work on cucurbituril and cavitand-type hosts, which was mostly done in the author's laboratory. In general terms, the observed voltammetric behaviour for encapsulated guests covers a wide range of possibilities. Cucurbituril and cavitand-type hosts afford more kinetically stable complexes, whose direct electrochemical behaviour is observable and tends to be kinetically slower than that of the free guests. However, the degree of kinetic attenuation varies over a wide range and, in some cases, challenges our ability to rationalize the data. Clearly, more variation in the host structures and more research work are required to improve our understanding of encapsulation effects on these electron transfer reactions.
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U2 - 10.1071/CH09390
DO - 10.1071/CH09390
M3 - Article
AN - SCOPUS:77649321334
VL - 63
SP - 184
EP - 194
JO - Australian Journal of Chemistry
JF - Australian Journal of Chemistry
SN - 0004-9425
IS - 2
ER -