@article{BommGuenterStumpe2012,
  author    = {Bomm, Jana and G{\"u}nter, Christina and Stumpe, Joachim},
  title     = {Synthesis and optical characterization of thermosensitive, luminescent gold nanodots},
  series = {The journal of physical chemistry : C, Nanomaterials and interfaces},
  volume    = {116},
  journal   = {The journal of physical chemistry : C, Nanomaterials and interfaces},
  number    = {1},
  publisher = {American Chemical Society},
  address   = {Washington},
  issn      = {1932-7447},
  doi       = {10.1021/jp206260r},
  pages     = {81 -- 85},
  year      = {2012},
  abstract  = {A facile one-pot synthesis for preparing thermosensitive, luminescent gold nanodots with diameters of 1-2 nm is presented. The influence of the alkyl chain length of the surface ligands (alkyl thiols) on the optical properties of the gold nanodots was investigated. The synthesized gold nanodots show strong thermosensitive photoluminescence. A photoluminescence quantum yield of 16.6\% was observed at room temperature, which could be improved to a value of 28.6\% when cooling the gold nanodot solutions to -7 degrees C. The synthesized thermosensitive, luminescent gold nanodots are interesting candidates for optoelectronic devices, medical imaging, sensing, or security labels.},
  language  = {en}
}
@article{BorgerKuliskovskaHubmannetal.2005,
  author    = {Borger, V. and Kuliskovska, O. and Hubmann, K. G. and Stumpe, Joachim and Huber, M. and Menzel, Henning},
  title     = {Novel polymers to study the influence of the azobenzene content on the photo-induced surface relief grating formation},
  issn      = {1022-1352},
  year      = {2005},
  abstract  = {The influence of the azobenzene concentration on the photo-induced surface relief grating (SRG) formation in polymer films was investigated. Two series of polymers with 4-alkoxy-4'-cyanoazobenzene side groups were synthesized. In series A, the degree of substitution was varied, while in series B, azobenzene and biphenyl groups were introduced in varying composition, but the concentration of non-reacted HEMA-groups was kept constant. Photo-induction of the dichroism and the SRG was studied as function of the azobenzene concentration. An optimum was found for the SRG formation (76\%), while the highest dichroism was induced at the lowest azobenzene concentration of 20\%. The restriction of rotational and translational molecular motions observed at higher azobenzene concentration was explained by pi-pi stacking of the azobenzene moieties and interaction of unreacted HEMA groups},
  language  = {en}
}
@article{DateFawcettGeueetal.1998,
  author    = {Date, R. W. and Fawcett, A. H. and Geue, Thomas and Haferkorn, J. and Malcolm, R. K. and Stumpe, Joachim},
  title     = {Self-ordering within thin films of poly(olefin sulfone)s.},
  year      = {1998},
  language  = {en}
}
@article{DoeringKolloscheRabeetal.2011,
  author    = {D{\"o}ring, Sebastian and Kollosche, Matthias and Rabe, Torsten and Stumpe, Joachim and Kofod, Guggi},
  title     = {Electrically tunable polymer DFB laser},
  series = {Advanced materials},
  volume    = {23},
  journal   = {Advanced materials},
  number    = {37},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {0935-9648},
  doi       = {10.1002/adma.201102465},
  pages     = {4265 -- 4269},
  year      = {2011},
  language  = {en}
}
@article{EckhardtRutlohStumpeetal.1998,
  author    = {Eckhardt, Th. and Rutloh, M. and Stumpe, Joachim and Kr{\"u}ger, Harald},
  title     = {Photo-Induced "Command Effects" in LC polymers by the combination of photoorientation and thermotropic self- organization},
  year      = {1998},
  language  = {en}
}
@article{EichhornBruceGuillonetal.2001,
  author    = {Eichhorn, Holger and Bruce, Duncan W. and Guillon, D. and Gallani, Jean Louis and Fischer, Thomas and Stumpe, Joachim and Geue, Thomas},
  title     = {Metal ion mediated mesomorphism and thin film behaviour of amphitropic tetraazaporphyrin complexes},
  year      = {2001},
  language  = {en}
}
@article{FritzSchoenhalsSapichetal.1998,
  author    = {Fritz, A. and Sch{\"o}nhals, A. and Sapich, B. and Rutloh, M. and Stumpe, Joachim},
  title     = {Dynamical and photochemical behavior of Amorphous copolymers containing photochromic azobenzene side groups},
  year      = {1998},
  language  = {en}
}
@article{GeuePietschHaferkornetal.1999,
  author    = {Geue, Thomas and Pietsch, Ullrich and Haferkorn, J. and Stumpe, Joachim and Date, R. W. and Fawcett, A. H.},
  title     = {Competition of alignment and aggregation? : Phenomena in constrained films of LC poly(olefin ulfone)s and maleic anhydride co- and terpolymers},
  year      = {1999},
  language  = {en}
}
@article{GeueStumpePietschetal.1995,
  author    = {Geue, Thomas and Stumpe, Joachim and Pietsch, Ullrich and Haak, M. and Kaupp, G.},
  title     = {Photochemically induced changes of optical anisotropy and surface of LB-multilayers built up by an amphiphilic and liquid crystalline copolymer conating azobenzene moieties},
  year      = {1995},
  language  = {en}
}
@article{GharagozlooHubmannKulikovskaBoergeretal.2009,
  author    = {Gharagozloo-Hubmann, Kati and Kulikovska, Olga and Boerger, Volker and Menzel, Henning and Stumpe, Joachim},
  title     = {Surface relief gratings in azobenzene-containing polymers with linear and star-branched architectures : a comparison},
  issn      = {1022-1352},
  doi       = {10.1002/macp.200900218},
  year      = {2009},
  abstract  = {The influence of molecular architecture on light-induced SRG formation was investigated. Polymers with different degree of branching were synthesized by ATRP and functionalized with azobenzene chromophores. The polymers differ only in their architecture - linear, 4-, 6-, or 12-arms stars. The photo-induced dichroism as well as the efficiency of SRG formation was similar for all polymers of this series. New consideration for the origin of the driving force was used to explain this behavior. The comparable SRG inscription rate in differently branched polymers can be rationalized by assuming that azobenzene acts as an internal molecular motor and can cause a non-turbulent motion on a scale smaller than that on which normal entanglement restriction forces act.},
  language  = {en}
}