Competitive induction of circularly polarized luminescence of CdSe/ZnS quantum dots in a nucleotide–amino acid hydrogel

Abstract

CdSe/ZnS quantum dots with circularly polarized luminescence in a nucleotide–amino acid hydrogel.

Bioinspired Amino Acid Based Materials in Bionanotechnology: From Minimalistic Building Blocks and Assembly Mechanism to Applications

“…However, when K ions were added into the coassembly of Fmoc-Glu/dG/QDs, only negative CPL signals of QDs were observed, in which the formation of G-quadruplex determined the CPL activity (Figure 5g). 230 A recent study has shown that metal ions can also mediate the formation of amino acid based assemblies with CPL activity. Xuan et al reported that the assembly of a chiral D/L-tert-butyl prolinate with manganese(II) chloride could form 1D structures in which the linear chains of face-sharing MnCl 6 octahedra were surrounded by proline cations.…”

“…Specifically, complexation with TCNQ resulted in a bathochromic shift of absorbance in the NIR region, leading to the Cotton effects beyond 800 nm (NIR-I region) that shows the difference in absorbance between left-handed and right-handed CPL (Figure f) . Wen et al doped water-soluble achiral CdSe/ZnS QDs into two-component hydrogels composed of Fmoc-Glu and dG . The results demonstrated that the hydrogels incorporating with QDs exhibited significant CPL signals.…”

“…In the absence of K ions, the generated CPL of the QDs was dependent on the supramolecular chirality of Fmoc-Glu assemblies. However, when K ions were added into the coassembly of Fmoc-Glu/dG/QDs, only negative CPL signals of QDs were observed, in which the formation of G-quadruplex determined the CPL activity (Figure g) …”

Biomolecule‐Based Circularly Polarized Luminescent Materials: Construction, Progress, and Applications

“…Nucleobases and their derivatives are used in the design of CPL‐active materials. To investigate the competitive chirality transfer of multicomponent systems, Liu and his co‐workers combined N ‐[(9 H ‐fluoren‐9‐ylmethoxy) carbonyl]‐glutamanic acid and deoxyguanosine into two‐component hydrogels with helical structures and then introduced CdSe/ZnS quantum dots to make non‐chiral quantum dots emit CPL signals [82] . Asanuma et al.…”

Biomolecule‐Based Circularly Polarized Luminescent Materials: Construction, Progress, and Applications

“…To investigate the competitive chirality transfer of multicomponent systems, Liu and his co-workers combined N-[(9Hfluoren-9-ylmethoxy) carbonyl]-glutamanic acid and deoxyguanosine into two-component hydrogels with helical structures and then introduced CdSe/ZnS quantum dots to make non-chiral quantum dots emit CPL signals. [82] Asanuma et al developed CPL probes that can respond to nucleic acid chirality. The hybridization of symmetric serinol nucleic acid containing pyrene-modified residues generated non-chiral nanowires, and chirality was induced by complementary chiral oligomers.…”