@article{KarGehrigAllampallyetal.2016,
  author    = {Kar, Haridas and Gehrig, Dominik W. and Allampally, Naveen Kumar and Fern{\´a}ndez, Gustavo and Laquai, Fr{\´e}d{\´e}ric and Ghosh, Suhrit},
  title     = {Cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties},
  series = {Chemical Science},
  volume    = {7},
  journal   = {Chemical Science},
  number    = {2},
  doi       = {10.1039/c5sc03462k},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-191459},
  pages     = {1115-1120},
  year      = {2016},
  abstract  = {A donor-acceptor-donor (D-A-D) type naphthalene-diimide (NDI-H) chromophore exhibits highly cooperative J-aggregation leading to nanotubular self-assembly and gelation in n-decane, as demonstrated by UV/Vis, FT-IR, photoluminescence and microscopy studies. Analysis of temperature-dependent UV/Vis spectra using the nucleation-elongation model and FT-IR data reveals the molecular origin of the cooperative nature of the self-assembly. The supramolecular polymerization is initiated by H-bonding up to a degree of polymerization similar to 20-25, which in a subsequent elongation step promotes J-aggregation in orthogonal direction leading to possibly a sheet-like structure that eventually produces nanotubes. Time-resolved fluorescence and absorption measurements demonstrate that such a tubular assembly enables very effective delocalization of excited states resulting in a remarkably prolonged excited state lifetime.},
  language  = {en}
}
@article{BaeumerKarthaAllampallyetal.2019,
  author    = {B{\"a}umer, Nils and Kartha, Kalathil K. and Allampally, Naveen Kumar and Yagai, Shiki and Albuquerque, Rodrigo Q. and Fern{\´a}ndez, Gustavo},
  title     = {Kontrolle {\"u}ber Selbstassemblierung durch Ausnutzung von Koordinationsisomerie},
  series = {Angewandte Chemie},
  volume    = {131},
  journal   = {Angewandte Chemie},
  number    = {44},
  doi       = {10.1002/ange.201908002},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-212176},
  pages     = {15772 -- 15776},
  year      = {2019},
  abstract  = {Hierin wird die inh{\"a}rente geometrische Isomerie eines PtII Komplexes als neues Werkzeug zur Kontrolle von supramolekularen Assemblierungsprozessen ausgenutzt. Bestrahlung mit UV-Licht sowie die sorgf{\"a}ltige Auswahl des verwendeten L{\"o}sungsmittels, der Temperatur und Konzentration f{\"u}hren zu einer regelbaren Koordinationsisomerie. Dies erm{\"o}glicht ein vollst{\"a}ndig reversibles Schalten zwischen zwei definierten aggregierten Spezies (1D Fasern ↔ 2D Lamellen) mit unterschiedlichem photoresponsivem Verhalten. Unsere Erkenntnisse erweitern nicht nur die Reichweite von Koordinationsisomerie, sondern er{\"o}ffnen auch aufregende M{\"o}glichkeiten zur Entwicklung neuartiger stimuliresponsiver Materialien.},
  language  = {de}
}