Themed collection In memory of Professor Ugo Mazzucato (1929–2017)
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In memory of Professor Ugo Mazzucato (1929–2017)
This issue of Photochemistry & Photobiological Sciences is dedicated to the memory of Professor Ugo Mazzucato, who passed away on 15th October 2017.
Photochem. Photobiol. Sci., 2019,18, 2092-2093
https://doi.org/10.1039/C9PP90040C
Photochromic rotaxanes and pseudorotaxanes
Among stimulus-responsive molecular ring-on-thread rotaxanes and pseudorotaxanes, variants incorporating photochromic sub-units are attracting considerable attention as their properties and structure can be remotely and precisely controlled, additionally without producing chemical waste.
Photochem. Photobiol. Sci., 2019,18, 2102-2111
https://doi.org/10.1039/C9PP00057G
Wavelength dependence and wavelength selectivity in photochemical reactions
Our study describes how organic photochemists can modify the outcome of a reaction by tuning the wavelength.
Photochem. Photobiol. Sci., 2019,18, 2094-2101
https://doi.org/10.1039/C8PP00512E
Optimal arrangements of 1,3-diphenylisobenzofuran molecule pairs for fast singlet fission
Best molecular pair packing geometries for singlet fission in 1,3-diphenylisobenzofuran are predicted.
Photochem. Photobiol. Sci., 2019,18, 2112-2124
https://doi.org/10.1039/C9PP00283A
Synthesis, spectroscopy and QM/MM simulations of a biomimetic ultrafast light-driven molecular motor
A molecular motor potentially performing a continuous unidirectional rotation is studied by a multidisciplinary approach including organic synthesis, transient spectroscopy and excited state trajectory calculations.
Photochem. Photobiol. Sci., 2019,18, 2259-2269
https://doi.org/10.1039/C9PP00223E
VUV-photolysis of aqueous solutions of hydroxylamine and nitric oxide. Effect of organic matter: phenol
VUV-irradiation of aqueous solutions containing, both, hydroxylamine (NH2OH/NH3OH+) and phenol results in the mineralization of the organic substrate and the quantitative reduction of NH3OH+ to NH4+ ions.
Photochem. Photobiol. Sci., 2019,18, 2240-2247
https://doi.org/10.1039/C9PP00143C
The photoisomerization of cis,trans-1,2-dideuterio-1,4-diphenyl-1,3-butadiene in solution. No bicycle-pedal
cis,trans-1,2-Dideuterio-1,4-diphenyl-1,3-butadiene (ct-DPBd2) was synthesized and its cis–trans photoisomerization in cyclohexane-d12 (C6D12) at room temperature was monitored by 1H NMR spectroscopy.
Photochem. Photobiol. Sci., 2019,18, 2174-2179
https://doi.org/10.1039/C9PP00113A
Photocatalytic inactivation of Escherichia coli bacteria in water using low pressure plasma deposited TiO2 cellulose fabric
Fabrics obtained from cellulose spinning were coated with TiO2 film, through the low pressure plasma sputtering technique, in order to get antibacterial activity.
Photochem. Photobiol. Sci., 2019,18, 2248-2258
https://doi.org/10.1039/C9PP00050J
Solution and solid state photochromism in a family of shape persistent azobenzene tetramers functionalized with alkyloxy substituents
Shape-persistent azobenzene tetramers functionalized at the periphery with alkyloxy substituents of different lengths have been synthesized and their photochemical behaviour has been investigated.
Photochem. Photobiol. Sci., 2019,18, 2281-2286
https://doi.org/10.1039/C9PP00022D
Optimized synthesis of luminescent silica nanoparticles by a direct micelle-assisted method
Small PEGylated silica nanoparticles are synthesized in the presence of high concentrations of organic solvents. This method allows for the efficient incorporation of dyes with poor solubility in water, yielding bright silica nanoparticles.
Photochem. Photobiol. Sci., 2019,18, 2142-2149
https://doi.org/10.1039/C9PP00047J
Photoelectrocatalytic degradation of emerging contaminants at WO3/BiVO4 photoanodes in aqueous solution
Advantages and limitations of WO3/BiVO4 heterojunctions applied to the photoelectrochemical treatment of some environmental Contaminants of Emerging Concern (CEC).
Photochem. Photobiol. Sci., 2019,18, 2150-2163
https://doi.org/10.1039/C9PP00043G
Effect of the size of polycyclic aryl groups on the competition between adiabatic/diabatic photoisomerization mechanisms of cis-styrylarenes
Adiabatic photoisomerization from 1Z* to 1E* has been experimentally evidenced for several styrylarenes. Its weight on the overall cis–trans photoisomerization has been found to increase upon increasing the chromophore size.
Photochem. Photobiol. Sci., 2019,18, 2125-2135
https://doi.org/10.1039/C9PP00009G
Excited-state intramolecular proton transfer in a bioactive flavonoid provides fluorescence observables for recognizing its engagement with target proteins
Intra- vs. intermolecular hydrogen-bond formation and ESIPT in a bioactive flavonoid result in different emission properties and provide a clue for recognizing its binding to target proteins.
Photochem. Photobiol. Sci., 2019,18, 2270-2280
https://doi.org/10.1039/C9PP00026G
The regioselective [2 + 2] photocycloaddition reaction of 2-(3,4-dimethoxystyryl)quinoxaline in solution
The [2+2] photocycloaddition between two molecules of (E)-2-(3,4-dimethoxystyryl)-quinoxaline (1) in an acetonitrile solution is the first example of the regioselective and stereospecific formation of a cyclobutane derivative without applying any method for the preorganization of molecules in a dilute solution.
Photochem. Photobiol. Sci., 2019,18, 2208-2215
https://doi.org/10.1039/C9PP00028C
Photoinduced oxidation of an indole derivative: 2-(1′H-indol-2′-yl)-[1,5]naphthyridine
UV-induced photooxidation of a 2-substituted indole derivative provides an efficient way for the formation of a benzoxazinone derivative.
Photochem. Photobiol. Sci., 2019,18, 2225-2231
https://doi.org/10.1039/C8PP00587G
The neuroleptic drug fluphenazine induces a significant UVA-mediated cytotoxic effect on three human cancer cell lines through apoptosis
The cytotoxic activity of fluphenazine (FPZ) in combination with UVA light was evaluated on three human tumor cell lines, HeLa, MSTO-211H and A431.
Photochem. Photobiol. Sci., 2019,18, 2232-2239
https://doi.org/10.1039/C9PP00023B
A calix[4]arene-based ternary supramolecular nanoassembly with improved fluoroquinolone photostability and enhanced NO photorelease
A calix[4]arene-based micellar nanoscaffold allows the co-encapsulation of a photolabile fluoroquinolone drug and a poorly photoreactive NO photodonor, simultaneously overcoming the main limitations of the free individual guests such as photolability and low photoreactivity.
Photochem. Photobiol. Sci., 2019,18, 2216-2224
https://doi.org/10.1039/C9PP00011A
Photo-induced spin switching in a modified anthraquinone modulated by DNA binding
The spin state of a nitroxide-labelled anthraquinone can be switched by visible light and modulated by DNA.
Photochem. Photobiol. Sci., 2019,18, 2199-2207
https://doi.org/10.1039/C8PP00586A
The chiral photocycloaddition of a cyclohexenone derivative with a chiral alkene. A DFT study
A theoretical study allows the modification of a previously assigned structure and justify the high stereoselectivity of the reaction.
Photochem. Photobiol. Sci., 2019,18, 2191-2198
https://doi.org/10.1039/C8PP00521D
One- and two-photon absorption properties of quadrupolar thiophene-based dyes with acceptors of varying strengths
The effect of acceptors of varying strengths on the 1P and 2P properties of DAD thiophene based dyes is determined by a combination of experimental and computational methods.
Photochem. Photobiol. Sci., 2019,18, 2180-2190
https://doi.org/10.1039/C9PP00006B
Early photophysical events of a ruthenium(II) molecular dyad capable of performing photochemical water oxidation and of its model compounds
Early events in a water oxidation chromophore-catalyst species are studied; ultrafast energy transfer occurs from the chromophore to the catalytic unit.
Photochem. Photobiol. Sci., 2019,18, 2164-2173
https://doi.org/10.1039/C8PP00530C
Thermally reversible photochromism of dipyrrolylethenes
A robust dipyrrolylethene derivative which undergoes thermally reversible and fatigue resistant photochromic reactions with appropriate fading rates has been designed and synthesized.
Photochem. Photobiol. Sci., 2019,18, 2136-2141
https://doi.org/10.1039/C8PP00557E
About this collection
This commemorative issue is in honour of the memory and achievements of Ugo Mazzucato, as an eminent photochemist, a rigorous teacher and a friendly colleague.
Anna Spalletti, Fausto Ortica and Loredana Latterini (Guest Editors)