Macrocyclic versus acyclic preorganization in organoplatinum(II)-based host‒guest complexes

• Published in: Chinese chemical letters Vol. 30; no. 11; pp. 1927 - 1930
• Main Authors: Zhang, Xiaolong, Han, Yifei, Liu, Guangyao, Wang, Feng
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2019; CAS Key Laboratory of Soft Matter Chemistry, iChEM (Col aborative Innovation Center of Chemistry for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
• Subjects: Host‒guest recognition; Metal–metal interactions; Photosensitization; Preorganization; Supramolecular chemistry; Photosensitization; Host‒guest recognition; Preorganization; Supramolecular chemistry; Metal–metal interactions; Host-guest recognition; Metal-metal interactions
• ISSN: 1001-8417; 1878-5964
• DOI: 10.1016/j.cclet.2019.05.007

Two host-guest systems have been constructed, by employing structurally similar terpyridine platinum(II) macrocycle and molecular tweezer as the synthetic receptors. The macrocycle/guest complex displays low-energy emission signal, reinforced non-covalent binding affinity, and enhanced photosensitization capability than those of the molecular tweezer/guest one. The discrepancy between macrocyclic and acyclic preorganization modes originates from the different numbers of Pt(II)Pt(II) metal–metal bonds in host-guest complexation structures. [Display omitted] Two host-guest systems have been constructed, by employing structurally similar terpyridine platinum(II) macrocycle and molecular tweezer as the synthetic receptors. The macrocycle/guest complex displays low-energy emission signal, reinforced non-covalent binding affinity, and enhanced photosensitization capability than those of the molecular tweezer/guest one. The discrepancy between macrocyclic and acyclic preorganization modes originates from the different numbers of Pt(II)Pt(II) metal–metal bonds in host-guest complexation structures.