%0 Journal Article %1 Hofkens2003 %A Hofkens, J %A Cotlet, M %A Vosch, T %A Tinnefeld, P %A Weston, KD %A Ego, C %A Grimsdale, A %A Mullen, K %A Beljonne, D %A Bredas, JL %A Jordens, S %A Schweitzer, G %A Sauer, M %A Schryver, F De %C 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA %D 2003 %I NATL ACAD SCIENCES %J PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA %K sauer %N 23 %P 13146-13151 %T Revealing competitive Forster-type resonance energy-transfer pathways in single bichromophoric molecules %U http://dx.doi.org/10.1073/pnas.2235805100 %V 100 %X We demonstrate measurements of the efficiency of competing Forster-type energy-transfer pathways in single bichromophoric systems by monitoring simultaneously the fluorescence intensity, fluorescence lifetime, and the number of independent emitters with time. Peryleneimide end-capped fluorene trimers, hexamers, and polymers with interchromophore distances of 3.4, 5.9, and on average 42 nm, respectively, served as bichromophoric systems. Because of different energy-transfer efficiencies, variations in the interchromophore distance enable the switching between homo-energy transfer (energy hopping), singlet-singlet annihilation, and singlet-triplet annihilation. The data suggest that similar energy-transfer pathways have to be considered in the analysis of single-molecule trajectories of donor/acceptor pairs as well as in natural and synthetic multichromophoric systems such as light-harvesting antennas, oligomeric fluorescent proteins, and dendrimers. Here we report selectively visualization of different energy-transfer pathways taking place between identical fluorophores in individual bichromophoric molecules.

@article{Hofkens2003, abstract = {We demonstrate measurements of the efficiency of competing Forster-type energy-transfer pathways in single bichromophoric systems by monitoring simultaneously the fluorescence intensity, fluorescence lifetime, and the number of independent emitters with time. Peryleneimide end-capped fluorene trimers, hexamers, and polymers with interchromophore distances of 3.4, 5.9, and on average 42 nm, respectively, served as bichromophoric systems. Because of different energy-transfer efficiencies, variations in the interchromophore distance enable the switching between homo-energy transfer (energy hopping), singlet-singlet annihilation, and singlet-triplet annihilation. The data suggest that similar energy-transfer pathways have to be considered in the analysis of single-molecule trajectories of donor/acceptor pairs as well as in natural and synthetic multichromophoric systems such as light-harvesting antennas, oligomeric fluorescent proteins, and dendrimers. Here we report selectively visualization of different energy-transfer pathways taking place between identical fluorophores in individual bichromophoric molecules.}, added-at = {2011-03-01T10:57:13.000+0100}, address = {2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA}, affiliation = {Hofkens, J (Reprint Author), Katholieke Univ Leuven, Dept Chem, Lab Photochem \& Spect, Celestijnenlaan 200F, B-3001 Heverlee, Belgium. Katholieke Univ Leuven, Dept Chem, Lab Photochem \& Spect, B-3001 Heverlee, Belgium. Univ Heidelberg, Inst Phys Chem, D-69120 Heidelberg, Germany. Max Planck Inst Polymer Res, D-55128 Mainz, Germany. Univ Mons, B-7000 Mons, Belgium. Univ Arizona, Dept Chem, Tucson, AZ 85721 USA.}, author = {Hofkens, J and Cotlet, M and Vosch, T and Tinnefeld, P and Weston, KD and Ego, C and Grimsdale, A and Mullen, K and Beljonne, D and Bredas, JL and Jordens, S and Schweitzer, G and Sauer, M and Schryver, F De}, author-email = {johan.hofkens@chem.kuleuven frans.deschryver@chem.kuleuven.ac.be}, biburl = {https://www.bibsonomy.org/bibtex/25a12be8db6df0eefae7b36690531154b/reichert}, cited-references = {ALOISI GG, 1992, J CHEM SOC FARADAY T, V88, P2139. ANDREWS DL, 1999, RESONANCE ENERGY TRA. BELJONNE D, 2000, J CHEM PHYS, V112, P4749. BERGLUND AJ, 2002, PHYS REV LETT, V89, UNSP 0681011-0681014. BOPP MA, 1997, P NATL ACAD SCI USA, V94, P10630. CARMICHAEL I, 1986, J PHYS CHEM REF DATA, V15, P1. COTLET M, 2001, P NATL ACAD SCI USA, V98, P14398. DAHAN M, 1999, CHEM PHYS, V247, P85. DEBELDER G, 2001, CHEMPHYSCHEM, V2, P49. EGO C, 2003, J AM CHEM SOC, V125, P437, DOI 10.1021/ja0205784. FORSTER T, 1959, DISCURSS FARRADAY SO, V278, P7. GRONHEID R, 2002, J AM CHEM SOC, V124, P2418. GRUNWELL JR, 2001, J AM CHEM SOC, V123, P4295. HANBURYBROWN R, 1956, NATURE, V177, P27. HOFKENS J, 1998, MACROMOLECULES, V31, P4493. HOFKENS J, 2000, J AM CHEM SOC, V122, P9278. HOFKENS J, 2001, SPECTROCHIM ACTA A, V57, P2093. HU DH, 2000, NATURE, V405, P1030. HUBNER CG, 2003, PHYS REV LETT, V91, ARTN 093903. JACKEL F, 2002, CHEM PHYS LETT, V362, P534. KOHN F, 2002, CHEMPHYSCHEM, V3, P1005. LOUNIS B, 2000, NATURE, V407, P491. MAUS M, 2001, J AM CHEM SOC, V123, P7668. SELVIN PR, 2000, NAT STRUCT BIOL, V7, P730. TINNEFELD P, 2001, CHEM PHYS LETT, V345, P252. TINNEFELD P, 2001, J PHYS CHEM A, V105, P7989. TINNEFELD P, 2002, J AM CHEM SOC, V124, P14310, DOI 10.1021/ja027343c. TINNEFELD P, 2003, J PHYS CHEM A, V107, P323, DOI 10.1021/jp026565u. VANDENBOUT DA, 1997, SCIENCE, V277, P1074. VANOIJEN AM, 1999, SCIENCE, V285, P400. VOSCH T, 2001, ANGEW CHEM INT EDIT, V40, P4643. VOSCH T, 2003, J PHYS CHEM A, V107, P6920, DOI 10.1021/jp034906d. WESTON KD, 2002, ANAL CHEM, V74, P5342, DOI 10.1021/ac025730z. YU J, 2000, SCIENCE, V289, P1327. ZHUANG XW, 2002, SCIENCE, V296, P1473.}, doc-delivery-number = {743LR}, groups = {public}, interhash = {9cd9c6a0cfc6bd60e4680b2600e107fc}, intrahash = {5a12be8db6df0eefae7b36690531154b}, issn = {0027-8424}, journal = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA}, journal-iso = {Proc. Natl. Acad. Sci. U. S. A.}, keywords = {sauer}, keywords-plus = {CONJUGATED POLYMERS; DENDRITIC SYSTEM; FLUORESCENCE; SPECTROSCOPY; TRIPLET; DENDRIMERS; DYNAMICS; IDENTIFICATION; CHROMOPHORES; COMPLEXES}, language = {English}, month = {NOV 11}, number = 23, number-of-cited-references = {35}, pages = {13146-13151}, publisher = {NATL ACAD SCIENCES}, subject-category = {Multidisciplinary Sciences}, times-cited = {68}, timestamp = {2011-03-09T14:16:18.000+0100}, title = {Revealing competitive Forster-type resonance energy-transfer pathways in single bichromophoric molecules}, type = {Article}, unique-id = {ISI:000186573700008}, url = {http://dx.doi.org/10.1073/pnas.2235805100}, username = {reichert}, volume = 100, year = 2003 }