Facile Surface Modification of Hydroxylated Silicon Nanostructures Using Heterocyclic Silanes

Facile Surface Modification of Hydroxylated Silicon Nanostructures Using Heterocyclic Silanes

Heterocyclic silanes containing Si–N or Si–S bonds in the ring undergo a ring opening reaction with −OH groups at the surface of porous Si nanostructures to generate −SH or −NH functional surfaces, grafted via O–Si bonds. The reaction is substantially faster (0.5–2 h at 25 °C) and more efficient tha...

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Veröffentlicht in:Journal of the American Chemical Society 2016-11, Vol.138 (46), p.15106-15109
Hauptverfasser: Kim, Dokyoung, Zuidema, Jonathan M, Kang, Jinyoung, Pan, Youlin, Wu, Lianbin, Warther, David, Arkles, Barry, Sailor, Michael J
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container_end_page 15109
container_issue 46
container_start_page 15106
container_title Journal of the American Chemical Society
container_volume 138
creator Kim, Dokyoung
Zuidema, Jonathan M
Kang, Jinyoung
Pan, Youlin
Wu, Lianbin
Warther, David
Arkles, Barry
Sailor, Michael J
description Heterocyclic silanes containing Si–N or Si–S bonds in the ring undergo a ring opening reaction with −OH groups at the surface of porous Si nanostructures to generate −SH or −NH functional surfaces, grafted via O–Si bonds. The reaction is substantially faster (0.5–2 h at 25 °C) and more efficient than hydrolytic condensation of trialkoxysilanes on similar hydroxy-terminated surfaces, and the reaction retains the open pore structure and photoluminescence of the quantum-confined silicon nanostructures. The chemistry is sufficiently mild to allow trapping of the test protein lysozyme, which retains its enzymatic activity upon release from the modified porous nanostructure.
doi_str_mv 10.1021/jacs.6b08614
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title Facile Surface Modification of Hydroxylated Silicon Nanostructures Using Heterocyclic Silanes
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