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Showing 1 to 12 of 1362 entries
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The role of humic acid aggregation on the kinetics of photosensitized singlet oxygen production and decay.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Carlos L, Pedersen BW, Ogilby PR, Mártire DO.
PMID: 21431180
Photochem Photobiol Sci. 2011 Jun;10(6):1080-6. doi: 10.1039/c1pp00003a. Epub 2011 Mar 23.

The effect of humic acid (HA) aggregate formation on the photosensitized generation and subsequent quenching of singlet molecular oxygen O(2)(a(1)Δ(g)) was investigated. Time-resolved O(2)(a(1)Δ(g)) phosphorescence traces were obtained from (a) bulk samples of HA dispersions and (b) microscope-based experiments...

Blue-shifted aggregation-induced emission of siloles by simple structural modification and their application as nitro explosive chemosensors.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Lee J, Park Y, Jung J, Han WS.
PMID: 28948269
Photochem Photobiol Sci. 2017 Oct 11;16(10):1495-1501. doi: 10.1039/c7pp00268h.

To induce blue-shifted emission of siloles, two tolyl-substituted derivatives - 1,1-diphenyl-2,3,4,5-tetra(m-tolyl)-1H-silole (m-TS) and 1,1-diphenyl-2,3,4,5-tetra(o-tolyl)-1H-silole (o-TS) - were prepared, and their photophysical properties were compared with those of a reference compound, hexaphenylsilole (HPS). By substituting methyl groups at ortho positions...

Novel coumarin sensitizers based on 2-(thiophen-2-yl)thiazole π-bridge for dye-sensitized solar cells.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Han L, Kang R, Zu X, Cui Y, Gao J.
PMID: 26340758
Photochem Photobiol Sci. 2015 Nov;14(11):2046-53. doi: 10.1039/c5pp00216h.

2-(Thiophen-2-yl)thiazole was introduced as a π-bridge into diethylamino coumarin and novel coumarin sensitizers were synthesized with cyanoacrylic acid or rhodanine acetic acid as electron acceptor. Their light-harvesting capabilities and photovoltaic performance were investigated and compared with those of a...

Correction: Patients with polymorphic light eruption have decreased serum levels of 25-hydroxyvitamin-D(3) that increase upon 311 nm UVB photohardening.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Gruber-Wackernagel A, Obermayer-Pietsch B, Byrne SN, Wolf P.
PMID: 26688185
Photochem Photobiol Sci. 2016 Jan;15(1):129. doi: 10.1039/c5pp90044a. Epub 2015 Dec 21.

Correction for 'Patients with polymorphic light eruption have decreased serum levels of 25-hydroxyvitamin-D(3) that increase upon 311 nm UVB photohardening' by Peter Wolf et al., Photochem. Photobiol. Sci., 2012, 11, 1831-1836.

Spray deposited β-Bi2O3 nanostructured films with visible photocatalytic activity for solar water treatment.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Barrera-Mota K, Bizarro M, Castellino M, Tagliaferro A, Hernández A, Rodil SE.
PMID: 25909244
Photochem Photobiol Sci. 2015 Jun;14(6):1110-9. doi: 10.1039/c4pp00367e.

Bismuth oxide thin films were obtained by the spray pyrolysis method using bismuth acetate as the precursor salt. The films were characterized by X-ray diffraction (XRD), Fourier Transform Infrared (FTIR), UV-vis diffuse reflectance, X-ray Photoelectron Spectroscopy (XPS) and Scanning...

The effect of natural iron oxide and oxalic acid on the photocatalytic degradation of isoproturon: a kinetics and analytical study.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Boucheloukh H, Remache W, Parrino F, Sehili T, Mechakra H.
PMID: 28345701
Photochem Photobiol Sci. 2017 May 17;16(5):759-765. doi: 10.1039/c6pp00441e.

The photocatalytic degradation of isoproturon, a persistent toxic herbicide, was investigated in the presence of natural iron oxide and oxalic acid and under UV irradiation. The influence of the relevant parameters such as the pH and the iron oxide...

A triphenylphosphine mediated photo-rearrangement and methanol addition of aryl chalcones to 1-propanones.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Sun Q, Yao CJ, König B.
PMID: 25739535
Photochem Photobiol Sci. 2015 May;14(5):948-52. doi: 10.1039/c5pp00009b.

Aryl chalcones rearrange and add methanol to give substituted propane-1-ones upon UV-A irradiation in the presence of PPh3. We propose two possible mechanisms for this photo-rearrangement. The reaction involves either the formation of a phosphine-carbonyl intermediate, nucleophilic addition of...

Near-infrared unsymmetrical blue and green squaraine sensitizers.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Rao GH, Venkateswararao A, Giribabu L, Singh SP.
PMID: 26815591
Photochem Photobiol Sci. 2016 Feb;15(2):287-96. doi: 10.1039/c5pp00335k. Epub 2016 Jan 27.

Two novel panchromatic asymmetrical squaraine sensitizers (SPSQ1 and SPSQ2) have been synthesized, characterized and effectively used for TiO2-based dye sensitized solar cells. In a solution, both dyes display a highly intense near-IR absorption (SPSQ1; 651 nm and SPSQ2; 692...

2-Phenylbenzoxazole derivatives: a family of robust emitters of solid-state fluorescence.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Carayon C, Fery-Forgues S.
PMID: 28581561
Photochem Photobiol Sci. 2017 Jul 01;16(7):1020-1035. doi: 10.1039/c7pp00112f. Epub 2017 Jun 05.

The derivatives of 2-phenylbenzoxazole (PBO) are popular fluorescent organic dyes for use in solution or after dispersion in an appropriate matrix. Their spectroscopic behavior in the solid state is, unjustly, not so well known. Many of them are strongly...

Cobalt oxide as a selective co-catalyst for water oxidation in the presence of an organic dye.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Kinastowska K, Barroso J, Yate L, Pavlov V, Chuvilin A, Bartkowiak W, Grzelczak M.
PMID: 29087429
Photochem Photobiol Sci. 2017 Dec 06;16(12):1771-1777. doi: 10.1039/c7pp00320j.

In photobiocatalytical processes involving the simultaneous oxidation of water and reduction of specific organic molecules (e.g., cofactors), the lack of physical separation of the redox half-reactions adversely affects the product stability. This is largely because organic molecules are generally...

Photochemical synthesis and photophysical features of ethynylphenanthrenes studied by emission and transient absorption measurements.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Hakoda Y, Aoyagi M, Irisawa KI, Kato SI, Nakamura Y, Yamaji M.
PMID: 27762411
Photochem Photobiol Sci. 2016 Nov 30;15(12):1586-1593. doi: 10.1039/c6pp00291a.

Phenanthrenes substituted with trimethylsilylethynyl and phenylethynyl groups were photochemically prepared, and their photophysical properties were systematically investigated based on measurements of fluorescence quantum yields, lifetimes, and transient absorption. Introducing ethynyl groups into the phenanthrene skeleton caused an increase in...

Short-lived intermediates in photochemistry of an OsCl.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Rogozina MV, Yudanov VV, Fedunov RG, Pozdnyakov IP, Melnikov AA, Chekalin SV, Glebov EM.
PMID: 29143059
Photochem Photobiol Sci. 2018 Jan 17;17(1):18-26. doi: 10.1039/c7pp00299h.

Two mechanisms of Os

Showing 1 to 12 of 1362 entries