Visible and near-infrared photoluminescence of a supramolecular complex constructed from a cycloparaphenylene nanoring and an erbium metallofullerene. Issue 26 (24th June 2022)

• Record Type: Journal Article
• Authors: Liang, Jiayi; Lu, Yuxi; Zhang, Jie; Qiu, Ling; Li, Wang; Zhang, Zhuxia; Wang, Chunru; Wang, Taishan
• Is Part Of: Dalton transactions. Volume 51:Issue 26(2022)
• Page Start: 10227
• Page End: 10233
• Publication Date: 2022-06-24
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d2dt00983h
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Host–guest interactions in supramolecular complexes of Er3 N@C80 ⊂[12]CPP modulate the near-infrared photoluminescence of Er3 N@C80 and the complexes have multiwavelength luminescence. Abstract : Erbium metallofullerenes exhibit near-infrared photoluminescence from the Er 3+ ions, which has potential applications in telecommunications, optical devices and bioscience. In this manuscript, we report the construction of a supramolecular complex of metallofullerene Er3 N@C80 and cycloparaphenylene [12]CPP to adjust the near-infrared photoluminescence of Er3 N@C80 through host–guest interactions. Moreover, this supramolecular complex shows a multiwavelength luminescence property. Mass spectrometry, electrochemical measurements and proton NMR spectroscopy were used to characterize the structure of Er3 N@C80 ⊂[12]CPP. The electrochemical results of Er3 N@C80 ⊂[12]CPP show the negatively shifted redox potentials compared to pristine Er3 N@C80 and the 1 H NMR signals of Er3 N@C80 ⊂[12]CPP shift upfield compared to pristine [12]CPP. More importantly, the photoluminescence spectra show that the [12]CPP nanoring can affect the near-infrared emission of encapsulated Er 3+ ions in Er3 N@C80, with the characteristic emission peak of Er 3+ at 1.5 μm being broadened and enhanced in the Er3 N@C80 ⊂[12]CPP complex, while the fluorescence lifetime of Er 3+ also becomes longer after assembly formation. Furthermore, the Er3 N@C80 guest also can influence the photoluminescence property of [12]CPP, whose emission peaks exhibit a slight blue-shift in the Er3 N@C80 ⊂[12]CPP complex. This study illustrates that the outer nanoring can be employed to adjust the photoluminescence of the encapsulated Er 3+ ion in Er3 N@C80 .