Efficient near-infrared circularly polarised luminescence (CPL) between 1400 and 1600 nm of four enantiomer pairs of homo- and heteroleptic complexes has been successfully measured. Utilising inexpensive optics and a commercial fluorimeter, discrimination of the left and right circularly polarised components was achieved, yielding remarkably high dissymmetry values in emission (g(lum)). Most notably, homoleptic complexes CsEr(hfbc)(4) (hfbc = 3-heptafluorobutylyrylcamphorate) and [TMG-H+](3)Er(BINOLate)(3) (TMG = 1,1,3,3-tetramethylguanidine; BINOLate = 1,1 '-bi-2-naphtholate) show maximal |g(lum)| values of 0.83 (at 1510 nm) and 0.29 (at 1545 nm) respectively, with the former complex possessing the strongest CPL within the NIR to date.
Intense 1400-1600 nm circularly polarised luminescence from homo- and heteroleptic chiral erbium complexes / Willis, Og; Pucci, A; Cavalli, E; Zinna, F; Di Bari, L. - In: JOURNAL OF MATERIALS CHEMISTRY. C. - ISSN 2050-7526. - 11:16(2023), pp. 5290-5296. [10.1039/d3tc00034f]
Intense 1400-1600 nm circularly polarised luminescence from homo- and heteroleptic chiral erbium complexes
Cavalli, E;
2023-01-01
Abstract
Efficient near-infrared circularly polarised luminescence (CPL) between 1400 and 1600 nm of four enantiomer pairs of homo- and heteroleptic complexes has been successfully measured. Utilising inexpensive optics and a commercial fluorimeter, discrimination of the left and right circularly polarised components was achieved, yielding remarkably high dissymmetry values in emission (g(lum)). Most notably, homoleptic complexes CsEr(hfbc)(4) (hfbc = 3-heptafluorobutylyrylcamphorate) and [TMG-H+](3)Er(BINOLate)(3) (TMG = 1,1,3,3-tetramethylguanidine; BINOLate = 1,1 '-bi-2-naphtholate) show maximal |g(lum)| values of 0.83 (at 1510 nm) and 0.29 (at 1545 nm) respectively, with the former complex possessing the strongest CPL within the NIR to date.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
