Quantum dots articles within Nature Chemistry

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  • Article |

    Hybrid structures made up of quantum dots functionalized with molecules are highly tunable platforms for light-driven applications; however, the interaction between their components is often weak. Now it has been shown that by connecting molecules to silicon quantum dots via p-conjugated tethers, strongly coupled exciton states can be generated that prove advantageous for photon upconversion.

    • Kefu Wang
    • , R. Peyton Cline
    •  & Ming Lee Tang

  • Article |

    Quantum dots functionalized with energy-accepting dyes hold promise for converting low-energy photons into higher-energy visible light for bioimaging, catalysis and solar energy harvesting. Now, it has been shown that non-toxic silicon quantum dots can be used in these systems; the transfer of spin-triplet excitons to molecules at their surface has been observed.

    • Pan Xia
    • , Emily K. Raulerson
    •  & Sean T. Roberts

  • Article |

    Tuning the selectivity for [2+2] photocycloadditions remains challenging. Now, triplet–triplet energy transfer from CdSe quantum dots enables the homo- and heterocouplings of 4-vinylbenzoic acid derivatives via [2+2] photocycloaddition. Preorganization of substrates on the quantum dots reverses intrinsic stereoelectronic preferences to yield cyclobutane products with unprecedented diastereo- and regioselectivity.

    • Yishu Jiang
    • , Chen Wang
    •  & Emily A. Weiss

  • Article |

    The ability to merge the photophysical properties of semiconductor quantum dots with those of well-understood and inexpensive molecular chromophores is important for the development of various emerging photonic and optoelectronic technologies. Now, 1-pyrenecarboxylic acid-functionalized CdSe quantum dots have been shown to undergo thermally activated delayed photoluminescence and display tunable photophysical properties.

    • Cédric Mongin
    • , Pavel Moroz
    •  & Felix N. Castellano

  • Article |

    Intracellular biothiols can degrade nanoparticle monolayers, compromising the function of these potentially promising tools. Here, we describe a label-free method for quantifying the intracellular stability of quantum dot monolayers, using laser desorption/ionization mass spectrometry coupled with inductively coupled plasma mass spectrometry.

    • Zheng-Jiang Zhu
    • , Yi-Cheun Yeh
    •  & Vincent M. Rotello

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