Full-color and white circularly polarized luminescence from CdSe/ZnS quantum dots by chiral templates of cellulose nanocrystals

Abstract

Circularly polarized luminescence with high dissymmetry factors can be realized by introducing fluorescent materials into intrinsic chiral nematic mesostructure of cellulose nanocrystals. In particular, semiconductor quantum nanocrystals with optical activity...

Circularly polarized organic room temperature phosphorescence activated by liquid crystalline polymer networks

“…19 Thus, the supramolecular self-assemblies of organic molecules as excellent CPL materials show high g lum values and luminescence efficiency. 20 The current research on CPL properties is mainly focused on fluorescent organic luminescent groups, but achieving long-lived organic room-temperature phosphorescent (RTP) materials with CPL remains a great challenge.…”

Polymer‐Based Circularly Polarized Luminescent Materials

“…Very recently, Zuo et al fabricated full-color and white right-handed CNCs-based CPL films by integrating CdSe/ ZnS quantum dots into self-assembled CNCs templates. [159] The g lum value of the obtained films could up to the order of 10 −1 . Wang et al prepared CNCs/silicon quantum dots hybrid nanoarchitecture films by integrating silicon quantum dots into CNCs template through electrostatic attraction, as illustrated in Figure 12B.…”

“…Cellulose nanocrystals (CNCs), due to their intriguing hierarchical chirality, especially that derived from self-assembled cholesteric structures, are considered as powerful chiral nanomaterials to manufacture CPL-active platform. [43,[147][148][149][150][151][152][153] The hydroxyl and charged groups on the CNCs surface can form non-covalent bonds with achiral luminophores, such as organic luminophores, [16,149,[154][155][156][157] quantum dots, [158][159][160] carbon dots (CDs), [161][162][163][164][165] upconverting nanoparticles, [166] and so on. [167,168] The CPL performance of CNCs-based materials is summarized in Table 3.…”

“…[176] This strategy could achieve the generation of CPLactive polyfluorene aggregate by completely removing dialkylpolysilane. The authors found that the resulting heteroaggregates might be composed of one polyfluorene chain and two Fluorescent organic dyes Solid film -0.68 [16] Fluorescent organic dyes Solid film -0.28 [157] Polyacetylene Solid film -0.65 [155] Quinine sulfate Solid film 38% 0.58 [149] Quinine sulfate dihydrate Solid film -0.51 [154] PEI Solid film -0.025 [156] CdSe/CdS quantum rods Solid film -0.45 [148] ZnS/CdSe quantum dots Solid film -0.48 [158] ZnS/CdSe quantum dots Solid film -0.84 [159] Silicon quantum dots Solid film -0.25 [160] Carbon dots Solid film 30.22% 0.74 [161] Carbon dots Aqueous dispersions -0.2 [162] Carbon dots Solid film 5.2% 0.27 [163] Carbon dots Solid film 2.8% 0.66 [164] Carbon dots Solid film -1.47 [165] Upconverting nanoparticles Solid film -0.156 [166] Lanthanide complexes Solid film 66.7% 0.36 [167] Perovskite nanocrystals Solid film 43.1% 0.057 [168] Gold nanoclusters Solid film -0.287 [172] Silver nanoclusters Solid film 15.96% 0.12 [173] NaGdF4Yb 3+ , Er 3+ @ Carbon dots Solid film -0.84 [152] polysilanes chains. Wei et al described the preparation of polyether-based cholesteric liquid crystalline copolymers containing chiral cholesteryl, cross-linkable allyl, as well as, cyano-biphenyl mesogenic groups moieties by anionic ring-opening polymerization.…”

“…fabricated full‐color and white right‐handed CNCs‐based CPL films by integrating CdSe/ZnS quantum dots into self‐assembled CNCs templates. [ 159 ] The g lum value of the obtained films could up to the order of 10 −1 . Wang et al.…”