28th International Conference on Photochemistry (ICP 2017): an introduction by the Guest Editors
We are delighted to present this special collection of papers presented at the 28th International Conference on Photochemistry (ICP2017).
Controlled assembly of metal colloids on dye-doped silica particles to tune the photophysical properties of organic molecules
The additive and optimised assembly of gold nanoparticles on the surface of dye-doped silica enables the modulation of the photophysical behaviour of organic molecules.
Smart nanoporous metal–organic frameworks by embedding photochromic molecules – state of the art and future perspectives
The opportunities, properties and perspectives of smart photochromic materials, which are obtained by embedment of stimuli-responsive molecules in nanoporous MOFs (metal–organic frameworks), both in bulk and in thin films, are reviewed.
Insulin hexamer dissociation dynamics revealed by photoinduced T-jumps and time-resolved X-ray solution scattering
The structural dynamics of insulin hexamer dissociation were studied by the photoinduced temperature jump technique and monitored by time-resolved X-ray scattering.
Photochromism and the fluorescence properties of bisbenzothienylethene and S,S,S′,S′-tetraoxide derivatives with dual conjugated fluorescent groups on their side chains
The title compounds were synthesized. Bisbenzothienyl-ethenes showed turn-off fluorescent photochromism, while their disulfones showed one-way photocyclization reactions and the turn-on fluorescence.
β-Diketonate ancillary ligands in heteroleptic iridium complexes: a balance between synthetic advantages and photophysical troubles
How the triplet energy of β-diketonate ancillary ligands in Ir(III) complexes affects the phosphorescence emission: photochemical and electrochemical investigations and DFT calculations shed light on the dark triplet excited states.
Imaging large amplitude out-of-plane motion in photoexcited pentafluorobenzene using time-resolved photoelectron spectroscopy: a computational study
We present simulations of the excited state dynamics and time-resolved photoelectron spectroscopy of photoexcited pentafluorobenzene.
Superhydrophobic polypyrene films to prevent Staphylococcus aureus and Pseudomonas aeruginosa biofilm adhesion on surfaces: high efficiency deciphered by fluorescence microscopy
Superhydrophobic fluorinated-polypyrene proved to be highly efficient to prevent biofilm adhesion.
Role of solute-solvent hydrogen bonds on the ground state and the excited state proton transfer in 3-hydroxyflavone. A systematic spectrophotometric study
Systematic spectroscopic study in organic solutions provides a new model for solvent-induced 3-hydroxyflavone deprotonation and solvent modulation of its photophysics.
Enhancement of NIR emission by a tight confinement of a hemicyanine dye within zeolitic MgAPO-5 nanochannels
The tight confinement of a styryl dye, LDS 730, within the 1D-nanochannels of a magnesium aluminophosphate, MgAPO-5, via a crystallization inclusion method, induces a boost in its emission properties in the NIR region.
Laser-induced reprecipitation of pyrene at 77 K and its dynamics as studied by spectroscopic techniques
Reprecipitation of pyrene (Py) in the glassy solution of methylcyclohexane and isopentane at 77 K was observed by the repetitive irradiation of nanosecond (ns) laser pulses at 355 nm.
Pump–probe XAS investigation of the triplet state of an Ir photosensitizer with chromenopyridinone ligands
The triplet excited state of a new Ir-based photosensitizer with two chromenopyridinone and one bipyridine-based ligands has been studied by pump–probe X-ray absorption spectroscopy (XANES) coupled with DFT calculations.
Photoinduced electron transfer in a molecular dyad by nanosecond pump–pump–probe spectroscopy
Photoinduced charge accumulation was investigated in a molecular dyad composed of a porphyrin chromophore and a ruthenium-based catalyst by pump–pump–probe experiments.
β-Diketone derivatives: influence of the chelating group on the photophysical and mechanofluorochromic properties
A diphenyl-boron β-diketonate complex was synthesized and compared with the related β-diketone and difluoro-boron complex, showing that the three compounds display very distinct photophysical and mechanofluorochromic behaviors.
Photochemical investigation of cyanoazobenzene derivatives as components of artificial supramolecular pumps
The threading kinetics of a self-assembled molecular pump is increased upon functionalization of the azobenzene moiety with a cyano group.
Intramolecular and interfacial dynamics of triarylamine-based hole transport materials
Hole injection across interfaces is fast but critically depends on good contact between the hole transfer and light-harvesting materials.
The mechanism of photocatalytic CO2 reduction by graphene-supported Cu2O probed by sacrificial electron donors
Cu2O nanoparticles (5 nm) adsorbed on defective graphene (Cu2O/G, 1.74 wt%) is an efficient photocatalyst for CO2 methanation in the presence of electron donors.
Estimation of quantum yields of weak fluorescence from eosin Y dimers formed in aqueous solutions
A weak fluorescence from eosin Y dimers can be observed. The fluorescence quantum yield was estimated to be 0.005.
Enhanced phosphorescence properties of a Pt-porphyrin derivative fixed on the surface of nano-porous glass
Room-temperature phosphorescence of a Pt-porphyrin derivative was enhanced in quantum yield and lifetime by fixing it on the surface of nanometer-scale pores of porous glass.
The effect of solvent relaxation time constants on free energy gap law for ultrafast charge recombination following photoinduced charge separation
Ultrafast low exergonic charge recombination following photoinduced charge separation proceeds in a non-equilibrium mode and its rate constant is nearly independent of the free energy gap.
Sequence dependence on DNA photochemistry: a computational study of photodimerization pathways in TpdC and dCpT dinucleotides
Photodimerization pathways for different conformers of TpdC and dCpT mapped by PCM/TD-M052X calculations.
Carbazole-based compounds as photoinitiators for free radical and cationic polymerization upon near visible light illumination
Six new carbazole based compounds are synthesized and proposed as high performance photoinitiators for both the free radical polymerization of acrylates and the cationic polymerization of epoxides.
The modeling of the absorption lineshape for embedded molecules through a polarizable QM/MM approach
We present a polarizable QM/MM strategy to simulate the absorption line shape of chromophores embedded in complex matrices, including both homogeneous and inhomogeneous broadening.
Sunlight-charged heterojunction TiO2 and WO3 particle-embedded inorganic membranes for night-time environmental applications
A metal oxide-heterojunction photocatalyst is developed to harvest sunlight, store the energy in electrons, and apply the stored energy in water treatment.
Copper(I) and silver(I) complexes of 9,9-dimethyl-4,5-bis(di-tert-butylphosphino)xanthene: photophysical properties and structural rigidity under pressure
Structural, photophysical and electrochemical properties of heteroleptic copper(I) and silver(I) complexes [M(tBu-xantphos)(bpy)][PF6] are described where tBu-xantphos is 4,5-bis(di-tert-butylphosphino)-9,9-dimethylxanthene.
The effect of solvent relaxation in the ultrafast time-resolved spectroscopy of solvated benzophenone
Modeling time-resolved spectra to unravel ultra fast solvent reorganization.
Structurally and electronically modulated spin interaction of transient biradicals in two photon-gated stepwise photochromism
Bi-photochromic compounds composed of two photochromic phenoxyl-imidazolyl radical complex units are developed. The stepwise photochromic properties can be regulated by control of the central bridging part.
About this collection
We are delighted to present this special collection of papers presented at the 28th International Conference on Photochemistry (ICP2017), held at the convention centre in Strasbourg, France, from July 16 to 21st, 2017.
L. Charbonnière and S. Haacke (Guest Editors)