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@ARTICLE{Kuttner:844300,
      author       = {Kuttner, Christian and Mayer, Martin and Dulle, Martin and
                      Moscoso, Ana Isabel and López-Romero, Juan Manuel and
                      Förster, Stephan and Fery, Andreas and Perez-Juste, Jorge
                      and Contreras-Caceres, Rafael},
      title        = {{S}eeded {G}rowth {S}ynthesis of {G}old {N}anotriangles:
                      {S}ize {C}ontrol, {SAXS} {A}nalysis, and {SERS}
                      {P}erformance},
      journal      = {ACS applied materials $\&$ interfaces},
      volume       = {10},
      number       = {13},
      issn         = {1944-8252},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2018-01737},
      pages        = {11152–11163},
      year         = {2018},
      abstract     = {We studied the controlled growth of triangular prismatic Au
                      nanoparticles with different beveled sides for
                      surface-enhanced Raman spectroscopy (SERS) applications.
                      First, in a seedless synthesis using 3-butenoic acid (3BA)
                      and benzyldimethylammonium chloride (BDAC), gold
                      nanotriangles (AuNTs) were synthesized in a mixture with
                      gold nanooctahedra (AuNOCs) and separated by
                      depletion-induced flocculation. Here, the influence of
                      temperature, pH, and reducing agent on the reaction kinetics
                      was initially investigated by UV–vis and correlated to the
                      size and yield of AuNT seeds. In a second step, the AuNT
                      size was increased by seed-mediated overgrowth with Au. We
                      show for the first time that preformed 3BA-synthesized AuNT
                      seeds can be overgrown up to a final edge length of 175 nm
                      and a thickness of 80 nm while maintaining their triangular
                      shape and tip sharpness. The NT morphology, including edge
                      length, thickness, and tip rounding, was precisely
                      characterized in dispersion by small-angle X-ray scattering
                      and in dry state by transmission electron microscopy and
                      field-emission scanning electron microscopy. For sensor
                      purposes, we studied the size-dependent SERS performance of
                      AuNTs yielding analytical enhancement factors between 0.9 ×
                      104 and 5.6 × 104 and nanomolar limit of detection
                      (10–8–10–9 M) for 4-mercaptobenzoic acid and BDAC.
                      These results confirm that the 3BA approach allows the
                      fabrication of AuNTs in a whole range of sizes maintaining
                      the NT morphology. This enables tailoring of localized
                      surface plasmon resonances between 590 and 740 nm, even in
                      the near-infrared window of a biological tissue, for use as
                      colloidal SERS sensing agents or for optoelectronic
                      applications.},
      cin          = {Neutronenstreuung ; JCNS-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)JCNS-1-20110106},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551) /
                      6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6215 - Soft Matter, Health and Life Sciences (POF3-621)},
      pid          = {G:(DE-HGF)POF3-551 / G:(DE-HGF)POF3-6G4 /
                      G:(DE-HGF)POF3-6215},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:29498508},
      UT           = {WOS:000429625400060},
      doi          = {10.1021/acsami.7b19081},
      url          = {https://juser.fz-juelich.de/record/844300},
}