Two pairs of chiral Yb^III enantiomers presenting distinct NIR luminescence and circularly polarized luminescence performances with giant differences in second-harmonic generation responses

Abstract

We demonstrate that chiral mononuclear YbIII enantiomers have better NIR-PL, CPL and SHG performances than chiral cocrystal ones.

1D Cu(i)-based chiral organic–inorganic hybrid material with second harmonic generation and circular polarized luminescence

“…[18][19][20][21][22] Due to the intrinsic noncentrosymmetric symmetry of chiral organic-inorganic hybrid materials, they typically exhibit unique optical properties such as SHG, circular dichroism (CD), and circularly polarized luminescence (CPL). [23][24][25][26][27][28] Many hybrid metal halides based on different metals such as Pb(II), 29 Sn(II), 30 Cd(II), 31 and Bi(III) 32 have been developed for SHG effects. Their distinctive structures and tunable properties make them well-suited for applications in NLO.…”

Two chiral lanthanide PrIII and HoIII complexes: NIR luminescence and nonlinear optical properties

“…It is well recognized that β-diketones are ideal 'antenna' ligands for sensitizing the emissions of Pr III and Ho III ions in the NIR region. [12][13][14][15][16] In particular, introducing chirality into luminescent Ln III complexes enables them to show some additional unique properties, such as circularly polarized luminescence, [18][19][20][21][22][23][24][25][26] ferroelectricity 27,28 and secondharmonic generation (SHG), 24,25 which are only observed in noncentrosymmetric (NCS) molecular assemblies. However, the reported chiral Ln III complexes with NIR luminescence are still limited mainly due to the fact that Ln III ions often have high coordination numbers (usually 7-10), which increases the difficulty of chiral control in such an emission system, and the use of enantiopure chiral ligands has proven to be the most effective strategy for acquiring chiral Ln III complexes.…”

“…[46][47][48][49][50][51][52] In contrast, the known Ln III complexes with SHG and THG responses are unexpectedly insufficient, [53][54][55][56][57][58][59][60][61][62] especially for NIR-luminescent Ln III counterparts. 24,25 As far as we know, there is no report on Pr III and Ho III complexes displaying NIR luminescence properties and presenting SHG and THG responses simultaneously.…”