PH-controllable supramolecular systems
Publication in refereed journal


摘要This Focus Review surveys representative examples of pH-controllable supramolecular systems with interesting features and state-of-the-art applications such as 1) conformational changes within individual molecules; 2) folding/unfolding of polymers; 3) simultaneous binding of cations and anions; 4) logic function; 5) ON-OFF switchable colorimetric sensing; 6) translocation of macrocycle-in-rotaxane molecules; 7) large-scale movement within molecules; and 8) regulation of the substrate flow in nanocontainers. In particular, systems will be discussed that involve: pH-induced conformational changes of a resorcinarene cavitand and a bis(iron porphyrin) complex; pH control in assembly and disassembly of supramolecular systems stabilized with different major noncovalent interactions; pH-driven movements of interlocked molecules involving rotaxanes, molecular elevators, and molecular muscles; and, finally, multicomponent supramolecular systems immobilized on solid supports as pH-responsive nanovalves for the controlled release of specific substrates. Recent advances in the understanding of pH-controllable supramolecular systems have led to the construction of meaningful molecular machines for electronic and biological applications that are amenable to control by simple perturbation with acids and bases. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.
著者Leung K.C.-F., Chak C.-P., Lo C.-M., Wong W.-Y., Xuan S., Cheng C.H.K.
期刊名稱Chemistry - An Asian Journal
出版社Wiley - V C H Verlag GmbbH & Co.
頁次364 - 381
關鍵詞Catenanes, Protonation, Rotaxanes, Self-assembly, Supramolecular chemistry

上次更新時間 2021-18-01 於 01:22