In:
Journal of the Chinese Chemical Society, Wiley, Vol. 65, No. 1 ( 2018-01), p. 141-148
Abstract:
Two structurally simple Pt(II)‐directed self‐assembly loop complexes were prepared by reactions of cis ‐(PEt 3 ) 2 Pt(OTf) 2 and the corresponding pyridylamide‐functionalized pyridyl ligands. Both Pt(II)‐based complexes exhibit singlet fluorescence, indicating that the platinum metal serves only as a structural, rather than a direct photophysical role within the loop framework. The crystal structure of complex 1 shows a distorted loop conformation with a hydrophobic pocket defined by the bridging ligands. The anion binding affinities of these two complexes were investigated with a range of anions. Such studies using UV–vis absorption, fluorescence, and 1 H NMR titrations showed that complex 1 exhibits excellent binding sensitivity and selectivity for benzoate over acetate in solution via a combination of electrostatic, hydrogen‐bonding, and π–π interactions, whereas complex 2 shows comparable binding affinities toward acetate and benzoate due to the lack of favorable aromatic π–π interaction.
Type of Medium:
Online Resource
ISSN:
0009-4536
,
2192-6549
DOI:
10.1002/jccs.2018.65.issue-1
DOI:
10.1002/jccs.201700275
Language:
English
Publisher:
Wiley
Publication Date:
2018
detail.hit.zdb_id:
138220-2
detail.hit.zdb_id:
2029538-8