Determination of the Förster Distance in Polymer Films by Fluorescence Decay for Donor Dyes with a Nonexponential Decay Profile

Felorzabihi, Neda; Froimowicz, Pablo; Haley, Jeffrey C.; Bardajee, Ghasem Rezanejade; Li, Binxin; Bovero, Enrico; Veggel, Frank C. J. M. van; Winnik, Mitchell A.

doi:10.1021/jp807637s

Cited by 32 publications

(22 citation statements)

References 40 publications

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“…Sometimes it is useful to characterize the fluorescence decay not only using exponential functions with discrete rate constants but with stretched exponential functions of the type of eq . For example, stretched exponential functions were used for measurements of Förster distance of dyes covalently bound to polymers

I (t) = I_{0} \exp [- {(t / τ)}^{β}] (0 \leq β \leq 1)

…”

Section: Resultsmentioning

confidence: 99%

Förster resonance energy transfer in poly(methyl methacrylates) copolymers bearing donor-acceptor 1,3-thiazole dyes

Pietsch

Schäfer

Menzel

et al. 2013

J. Polym. Sci. Part A: Polym. Chem.

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The F€ orster resonance energy transfer (FRET) properties in poly(methyl methacrylate) copolymers containing 2-(pyridine-2-yl) thiazole dyes were studied upon systematic variation of the donor-to-acceptor ratio. To this end, 2-(pyridine-2-yl) thiazole dyes specially designed for the usage as energy donor and acceptor molecules were incorporated within one polymer chain. Poly(methyl methacrylate) copolymers containing these donor and acceptor dyes were synthesized using the RAFT polymerization method. Copolymers with a molar mass (M n ) of nearly 10,000 g/mol were achieved with dispersity index values ( -D) under 1.3. The presented copolymers act as a model system for the FRET investigation. F€ orster resonance energy transfer properties of the copolymers are characterized by steady state as well as time resolved fluorescence spectroscopy. The results indicate that the energy transfer rates and the transfer efficiencies are tunable by variation of the donoracceptor-ratio. The use of alternative energy sources has become an important research topic as conventional organic fuels are to decline and global warming due to the greenhouse effect becomes increasingly recognized. A key aspect to prevent both global warming and the long-term lack of fuels is the conversion of sunlight into electrical and chemical energy. The importance of this aspect is reflected in numerous recent technical developments from applications of solar cells to photocatalytic devices. [1][2][3][4][5][6][7] In particular photosynthetic systems that emerged in plants and algae over millions of years are of interest in this context. Light harvesting has been perfected by evolution to a point, which is not reached until now by artificial systems. Artificial photosynthetic systems are designed to mimic natural photosynthetic systems in that they are made of lightharvesting units, a photoactive center and a catalytic center.

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I (t) = I_{0} \exp [- {(t / τ)}^{β}] (0 \leq β \leq 1)

…”

Section: Resultsmentioning

confidence: 99%

Förster resonance energy transfer in poly(methyl methacrylates) copolymers bearing donor-acceptor 1,3-thiazole dyes

Pietsch

Schäfer

Menzel

et al. 2013

J. Polym. Sci. Part A: Polym. Chem.

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“…20,21 Fluorescence microscopy of the nanofibers showed that emission color changed from blue to orange with increasing DCM content ( Figure 7). As the DCM/TPP molar ratio increased to 1: 0.02, white emission was observed with CIE coordinates of (0.321, 0.294), close to the coordinates for pure white light (0.333, 0.333).…”

Section: Resultsmentioning

confidence: 99%

Preparation of tunable emissive poly(ethylene oxide) nanofibers by doping with TPP and DCM

Zhang

Zhan

et al. 2011

Macromol. Res.

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Poly(ethylene oxide) (PEO) nanofibers that were doubly-doped with a donor, 1,3,5-triphenyl-2-pyrzoline (TPP), and an acceptor, 4-(dicyanomethylene)-2-methyl-6-(p-dimethyl-aminostyryl)-4H-pyran (DCM), were prepared by electrospinning to be 200-300 nm in diameter. Fluorescence from DCM was caused by non-radiative Forster-type fluorescence resonance energy transfer from photo-excited TPP to DCM. The color of the fluorescence from the PEO-TPP/DCM nanofibers was controllable through variation of the TPP:DCM molar ratio and ranged from blue to orange to white.

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“…Methacrylic acid (MAA) was distilled under reduced pressure prior to use. The naphthalimide dye, 6‐bromo‐2‐(2‐hydroxyethyl)‐benzo[de]‐isoquinoline‐1,3‐dione ( NapD ), was synthesized and purified following reported procedures 35. 36…”

Section: Methodsmentioning

confidence: 99%

Photoreactive Nanoparticles as Nanometric Building Blocks for the Generation of Self‐Healing Hydrogel Thin Films

Froimowicz¹,

Klinger²,

Landfester³

2011

Chemistry A European J

Self Cite

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The use of reversible photo-cross-linkable nanoparticles as nano building blocks for the formulation of nanostructured self-healing thin hydrogel films is shown for the first time. This strategy for the fabrication of autonomous self-healing coatings consisted of various microgels bearing surface cinnamate moieties. The nanoparticles were formed by miniemulsion copolymerization, which was followed by surface functionalization with the cinnamate groups. These nanoparticles were then used to form films by drop-casting, followed by interparticle photo-cross-linking polymerization through the light-induced forward dimerization reaction of the previously incorporated cinnamate groups. The reversibility of this macroscopic network formation was also demonstrated by photoinducing the backward dimerization reaction and carrying out several cycles of photoinduced cross-linking and de-cross-linking. The self-healing ability through swelling of these films following surface damage was also demonstrated. Finally, the ability of these self-healing macroscopic films to incorporate additives of different chemical nature before photo-cross-linking was evaluated.

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Determination of the Förster Distance in Polymer Films by Fluorescence Decay for Donor Dyes with a Nonexponential Decay Profile

Cited by 32 publications

References 40 publications

Förster resonance energy transfer in poly(methyl methacrylates) copolymers bearing donor-acceptor 1,3-thiazole dyes

Förster resonance energy transfer in poly(methyl methacrylates) copolymers bearing donor-acceptor 1,3-thiazole dyes

Preparation of tunable emissive poly(ethylene oxide) nanofibers by doping with TPP and DCM

Photoreactive Nanoparticles as Nanometric Building Blocks for the Generation of Self‐Healing Hydrogel Thin Films

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