Department of Chemistry
Recent Submissions
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Glycosylated porphyrin-cucurbituril conjugate for photodynamic inactivation of bacteria and doxorubicin carriage for anticancer drug delivery
(World Scientific Publishing, 2019-10)Porphyrin derivatives are highly attractive in the construction of multifunctional molecular platforms with interesting properties and applications. In this regard, we report here the use of a multifunctional porphyrin-based ... -
Synthesis and water oxidation electrocatalytic and electrochromic behaviours of mesoporous nickel oxide thin film electrodes
(Royal Society of Chemistry, 2019-09-02)Nickel oxide (NiO) thin film with a high surface area is an important material in electrochemical applications. Spin coating of a preformed clear solution of ethanol, nickel nitrate, and surfactants (C12H25(OCH2CH2)10OH, ... -
“Off–on” switching of intracellular singlet oxygen release under biocompatible conditions
(Royal Society of Chemistry, 2019-10)Precise spatiotemporal control of singlet oxygen generation is of immense importance considering its involvement in photodynamic therapy. In this work, we present a rational design for an endoperoxide which is highly stable ... -
X-ray photoelectron spectroscopy with electrical modulation can be used to probe electrical properties of liquids and their interfaces at different stages
(American Chemical Society, 2019)Operando X-ray photoelectron spectroscopy (o-XPS) has been used to record the binding energy shifts in the C 1s peak of a pristine poly(ethylene glycol) (PEG) liquid drop in an electrowetting on dielectric (EWOD) geometry ... -
Water-dispersible glycosylated poly(2,5′-thienylene)porphyrin-based nanoparticles for antibacterial photodynamic therapy
(Royal Society of Chemistry, 2019-02)Here we report the preparation of water-dispersible glycosylated poly(2,5′-thienylene)porphyrin based nanoparticles by a nanoprecipitation method and demonstrate the application of these nanoparticles in antibacterial ... -
Visible light-driven water oxidation with a ruthenium sensitizer and a cobalt-based catalyst connected with a polymeric platform
(Royal Society of Chemistry, 2019)A facile synthesis for a photosensitizer–water oxidation catalyst (PS–WOC) dyad, which is connected through a polymeric platform, has been reported. The dyad assembly consists of a ruthenium-based chromophore and a cobalt–iron ... -
Chemically addressed switching measurements in graphene electrode memristive devices using in situ XPS
(Royal Society of Chemistry, 2019-08)The memristor has been the topic of heated research activity since the Pt/TiO2/TiOx/Pt structure was reported by Hewlett-Packard Labs. The characteristics of memristors such as the pinched hysteresis loops and time and ... -
Coarse-grained electrostatic model including ion-pairing equilibrium that explains DC and AC X-ray photoelectron spectroscopy measurements on ionic liquids
(American Chemical Society, 2019)The dynamics of the electrochemical double layer in ionic liquids can be experimentally probed by a number of experimental techniques. Earlier, we reported on the results of an X-ray photoelectron spectroscopic investigation ... -
AC electrowetting modulation of low-volatile liquids probed by XPS: dipolar vs ionic screening
(American Chemical Society, 2019)X-ray photoelectron spectroscopic (XPS) data have been recorded for a low-molecular-weight poly(ethylene glycol) microliter-sized sessile liquid drops sitting on a dielectric covered planar electrode while imposing a ±6 V ... -
Enhancement of formic acid dehydrogenation selectivity of Pd(111) single crystal model catalyst surface via Brønsted bases
(American Chemical Society, 2019)The influence of ammonia (NH3) on the doubly deuterated formic acid (DCOOD, FA) dehydrogenation selectivity for a Pd(111) single crystal model catalyst surface was investigated under ultrahigh vacuum conditions using ... -
Cucurbit[7]uril-anchored porphyrin-based multifunctional molecular platform for photodynamic antimicrobial and cancer therapy
(American Chemical Society, 2019)Here we report a photoactive supramolecular assembly that is multifunctional and constructed by covalently linking four receptor molecules (cucurbit[7]uril) to a porphyrin derivative with suitable linkers. While this ... -
CdTe quantum dot-functionalized P25 titania composite with enhanced photocatalytic NO2 storage selectivity under UV and vis irradiation
(American Chemical Society, 2019)Composite systems of P25 (titania) functionalized with thioglycolic acid (TGA)-capped CdTe colloidal quantum dots (QDs) were synthesized, structurally characterized, and photocatalytically tested in the photocatalytic NOx ... -
Aza-Nazarov cyclization reactions via anion exchange catalysis
(American Chemical Society, 2019)A catalytic aza-Nazarov cyclization between 3,4-dihydroisoquinolines and α,β-unsaturated acyl chlorides has been developed to access α-methylene-γ-lactam products in good yields (up to 79%) as single diastereomers. The ... -
Control of triboelectric charges on common polymers by photoexcitation of organic dyes
(Nature Publishing Group, 2019-01)Triboelectric charging of insulators, also known as contact charging in which electrical charges develop on surfaces upon contact, is a significant problem that is especially critical for various industries such as polymers, ... -
Spin density encodes intramolecular singlet exciton fission in pentacene dimers
(Nature Publishing Group, 2019)The formation of two triplet excitons at the cost of one photon via singlet exciton fission in organic semiconductors can potentially enhance the photocurrent in photovoltaic devices. However, the role of spin density ... -
Linear and nonlinear electrochemical impedance spectroscopy studies of Li/SOCl2 batteries
(Electrochemical Society Inc., 2019)Performing accurate, linear and stable Electrochemical Impedance Spectroscopy of Li/SOCl2 based batteries (and more generally, all primary batteries) is challenging due to the lack of a (well-defined) charging reaction. ... -
Lyotropic liquid crystalline mesophases made of salt-acid-surfactant systems for the synthesis of novel mesoporous lithium metal phosphates
(Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim, 2019)Mesoporous lithium metal phosphates are an important class of materials for the development of lithium ion batteries. However, there is a limited success in producing mesoporous lithium metal phosphates in the literature. ... -
Carbon Cloth-based Hybrid Materials as Flexible Electrochemical Supercapacitors
(WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2019)Carbon cloths are the important materials composed of woven carbon fibres having the diameters in the range of 5–10 μm. These materials have been investigated for innumerable applications such as supercapacitors (symmetric ... -
Novel supramolecular photocatalyst based on conjugation of cucurbit[7]uril to non-metallated porphyrin for electrophotocatalytic hydrogen generation from water splitting
(WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2019)The front cover artwork for Issue 13/2019 is provided by Tuncel and co‐workers at UNAM and the Chemistry Department of Bilkent University (Turkey). The image shows solar energy promoted photoelectrocatalytic water splitting ... -
Novel supramolecular photocatalyst based on conjugation of cucurbit[7]uril to non-metallated porphyrin for electrophotocatalytic hydrogen generation from water splitting
(WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2019)Visible‐light triggerable, stable, organic material‐based photocatalysts that can function in alkaline media without the necessity of sacrificial agent for hydrogen production are highly sought after. Here, we report a ...
