@article{TiseanuParvulescuKumkeetal.2009,
  author    = {Tiseanu, Carmen and P{\^a}rvulescu, Victor I. and Kumke, Michael Uwe and Dobroiu, Svako and Geßner, Andr{\´e} and Simon, Simion},
  title     = {Effects of support and ligand on the photoluminescence properties of siliceous grafted europium complexes},
  issn      = {1932-7447},
  doi       = {10.1021/Jp808411e},
  year      = {2009},
  abstract  = {Europium ions were introduced in SiO2 and MCM-41 via two different pathways: (1) grafting the europium complexes with two alkoxide structures, 3-(2-imidazolin-1-yl)-propyl-triethoxysilane (IPTES) and aminopropyltrimethoxysilane (APTMS), and (2) functionalization of the SiO2 support with silicon 4- carboxylbutyltriethoxide followed by subsequent addition of the europium ions. The new materials were characterized using nitrogen adsorption isotherms at -196 degrees C, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, powder X-ray diffraction, Fourier transform infrared, NMR, DR-UV-vis, steady-state emission and excitation, and time-resolved photoluminescence spectroscopy. Spectral changes found in the time-resolved photoluminscence spectra strongly point to the distribution of europium ions on a range of environments in both SiO2 and MCM-41 supports. The average europium photoluminescence lifetimes decrease within the order: Eu3+-IPTES/SiO2 (550 mu s) > Eu3+-APTMS/SiO2 (425 mu s) > Eu3+-APTMS/MCM-41 (370 mu s) > Eu3+-IPTES/MCM-41 (320 mu s) > Eu3+-CABES/SiO2 (240 mu s). The photoluminescence quantum efficiency has the largest value, of 22\%, for Eu3+-IPTES/SiO2, while the most reduced value, of 9\%, was measured for Eu3+-CABES/SiO2.},
  language  = {en}
}
@article{WessigBehrendsKumkeetal.2016,
  author    = {Wessig, Pablo and Behrends, Nicole and Kumke, Michael Uwe and Eisold, Ursula},
  title     = {FRET Pairs with Fixed Relative Orientation of Chromophores},
  series = {European journal of organic chemistry},
  volume    = {145},
  journal   = {European journal of organic chemistry},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {1434-193X},
  doi       = {10.1002/ejoc.201600489},
  pages     = {4476 -- 4486},
  year      = {2016},
  abstract  = {Synthetic routes to different oligospirothioketal (OSTK) Forster resonance energy transfer (FRET) constructs are described and the photophysics of these constructs were explored in different solvents. The FRET efficiencies were determined from the experimental data and compared with theoretical values. The influence of the outstanding rigidity of the novel OSTK compounds on the FRET is discussed.},
  language  = {en}
}
@article{WessigBehrendsKumkeetal.2016,
  author    = {Wessig, Pablo and Behrends, Nicole and Kumke, Michael Uwe and Eisold, Ursula and Meiling, Til and Hille, Carsten},
  title     = {Two-photon FRET pairs based on coumarin and DBD dyes},
  series = {RSC Advances},
  volume    = {6},
  journal   = {RSC Advances},
  publisher = {Royal Society of Chemistry},
  address   = {Cambridge},
  issn      = {2046-2069},
  doi       = {10.1039/c6ra03983a},
  pages     = {33510 -- 33513},
  year      = {2016},
  abstract  = {The synthesis and photophysical properties of two new FRET pairs based on coumarin as a donor and DBD dye as an acceptor are described. The introduction of a bromo atom dramatically increases the two-photon excitation (2PE) cross section providing a 2PE-FRET system, which is also suitable for 2PE-FLIM.},
  language  = {en}
}
@misc{WessigHilleKumkeetal.2016,
  author    = {Wessig, Pablo and Hille, Carsten and Kumke, Michael Uwe and Meiling, Till Thomas and Behrends, Nicole and Eisold, Ursula},
  title     = {Two-photon FRET pairs based on coumarin and DBD dyes},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-394445},
  pages     = {33510 -- 33513},
  year      = {2016},
  abstract  = {The synthesis and photophysical properties of two new FRET pairs based on coumarin as a donor and DBD dye as an acceptor are described. The introduction of a bromo atom dramatically increases the two-photon excitation (2PE) cross section providing a 2PE-FRET system, which is also suitable for 2PE-FLIM.},
  language  = {en}
}
@article{XieXuGessneretal.2012,
  author    = {Xie, Zai-Lai and Xu, Hai-Bing and Gessner, Andre and Kumke, Michael Uwe and Priebe, Magdalena and Fromm, Katharina M. and Taubert, Andreas},
  title     = {A transparent, flexible, ion conductive, and luminescent PMMA ionogel based on a Pt/Eu bimetallic complex and the ionic liquid [Bmim][N(Tf)(2)]},
  series = {Journal of materials chemistry},
  volume    = {22},
  journal   = {Journal of materials chemistry},
  number    = {16},
  publisher = {Royal Society of Chemistry},
  address   = {Cambridge},
  issn      = {0959-9428},
  doi       = {10.1039/c2jm15862k},
  pages     = {8110 -- 8116},
  year      = {2012},
  abstract  = {Transparent, ion-conducting, luminescent, and flexible ionogels based on the room temperature ionic liquid (IL) 1-butyl-3-methylimidazolium bis(trifluoromethane sulfonyl) imide [Bmim][N(Tf)(2)], a PtEu2 chromophore, and poly(methylmethacrylate) (PMMA) have been prepared. The thermal stability of the PMMA significantly increases with IL incorporation. In particular, the onset weight loss observed at ca. 229 degrees C for pure PMMA increases to 305 degrees C with IL addition. The ionogel has a high ionic conductivity of 10(-3) S cm(-1) at 373 K and exhibits a strong emission in the red with a long average luminescence decay time of tau = 890 mu s. The resulting material is a new type of soft hybrid material featuring useful thermal, optical, and ion transport properties.},
  language  = {en}
}
@article{YinSchubertStilleretal.2008,
  author    = {Yin, Chunhong and Schubert, Marcel and Stiller, Burkhard and Castellani, Mauro and Neher, Dieter and Kumke, Michael Uwe and H{\"o}rhold, Hans-Heinrich},
  title     = {Tuning of the excited-state properties and photovoltaic performance in PPV-based polymer blends},
  doi       = {10.1021/Jp803977k},
  year      = {2008},
  language  = {en}
}