Miftahussurur Hamidi Putra

• Master of Science
• PhD Student at Ulm University

Chlorinated trityl radicals functionalized with electron‐donating groups are promising red‐emitting materials for optoelectronic and spintronic applications, overcoming the spin‐statistical limit of conventional emitters. Donor functionalization induces charge transfer character, enhancing photoluminescence quantum yield, which depends on the donor...

We report the synergistic use of Pd(OAc)₂ and Ag₂O for the direct C−H arylation of polyfluoroarenes with aryl iodides in DMF as the solvent. This method is straightforward, can be conducted in air, and does not require additional ligands, yielding fluorinated unsymmetrical biaryl products in up to 99 %. Experimental studies and DFT calculations sug...

Chlorinated trityl radicals functionalized with electron-donating groups are promising red-emitting materials for optoelectronic and spintronic applications, overcoming the spin-statistical limit of conventional emitters. Donor functionalization induces charge transfer character, enhancing photoluminescence quantum yield, which depends on the donor...

Chlorinated trityl radicals functionalized with electron-donating groups are promising red-emitting materials for optoelectronic and spintronic applications, overcoming the spin-statistical limit of conventional emitters. Donor functionalization induces charge transfer character, enhancing photoluminescence quantum yield, which depends on the donor...

Sodium‐ion batteries (SIBs) show promise for the next generation of energy storage technology but face significant challenges in regards to stability due in part to uncontrolled degradation of the solid electrolyte interphase (SEI). Kinetic Monte Carlo (kMC) modeling is uniquely suited to provide molecular‐scale insight on the phenomena that influe...

We report the synergistic combination of Pd(OAc)2 and Ag2O for the oxidative C–H arylation of (poly)fluoroarenes with aryl pinacol boronates (Ar‐Bpin) in DMF as the solvent. This procedure can be conducted easily in air, and without using additional ligands, to afford the fluorinated unsymmetrical biaryl products in up to 98% yield. Experimental st...

Based on quantum chemical calculations, we predict strong solvatochromism in a light‐driven molecular photocatalyst for hydrogen generation, that is we show that the electronic and optical properties of the photocatalyst strongly depend on the solvent it is dissolved in. Our calculations in particular indicate a solvent‐dependent relocation of the...

Based on quantum chemical calculations, we predict strong solvatochromism in a light-driven molecular photocatalyst for hydrogen generation, i.e., we show that the electronic and optical properties of the photocatalyst strongly depend on the solvent it is dissolved in. Our calculations in particular indicate a solvent dependent relocation of the hi...

In this review, a discussion on renewable sources of energy with clear focus on solar cell applications is presented. Especially, possible future directions for development of dye-sensitized solar cells (DSSCs) are discussed. Dye-sensitized solar cells have become an important topic of research due to its high importance in energy conversion. Curre...

Conductive polymers represent a promising alternative to semiconducting oxide electrodes typically used in dye‐sensitized cathodes as they more easily allow a tuning of the physicochemical properties. This can then also be very beneficial for using them in light‐driven catalysis. In this computational study, we address the coupling of Ru‐based phot...

Conductive polymers represent a promising alternative to semiconducting oxide electrodes typically used in dye-sensitized cathodes as they more easily allow a tuning of the physicochemical properties. This can then also be very beneficial for using them in light-driven catalysis. In this computational study, we address the coupling of Ru-based phot...

Conductive polymers represent a promising alternative to semiconducting oxide electrodes typically used in dye-sensitized cathodes as they more easily allow a tuning of the physicochemical properties. This can then also be very beneficial for using them in light-driven catalysis. In this computational study, we address the coupling of Ru-based phot...

In der fortdauernden Covid‐19‐Pandemie versuchen junge Wissenschaftler und Wissenschaftlerinnen, den akademischen Austausch digital aufrechtzuerhalten. Open‐Source‐Programme bieten dabei oft eine schnelle und machbare Alternative , um sich zu vernetzen.

Originally planned as an on-site meeting, the inaugural CataLight Young Scientist Symposium (CYSS) took place as a fully online conference in November 2020. Dedicated to various aspects of photocatalysis, namely synthesis, theory, characterization, and application, CYSS aimed to provide a stage for early-career scientists to connect to each other a...

Noble metals (Au and Ag) are the primary raw materials which have vast potential application ranging from across biosensor, biomedicine, science, and engineering fundamental. However, alloying them will enhance the efficiency and applicability of noble metals. Employing the linear-weight (LW) technique to construct a dielectric function of a binary...

In this study, we have calculated the sensitivity of localized surface plasmon resonance (LSPR) Au nanorod by a public metallic particle simulation based on the boundary element method (Metallic Nano-Particle Boundary Element Method, MNPBEM). The diameter of nanorod D is 20 nm, 60 nm, and 80 nm. The variation of aspect ratio is 1.5 to 3.5. The diel...

In this study, we have performed the incident electrical field angle effect in localized surface plasmon resonance (LSPR) spectra of bimetallic Ag–Au nanorod using Metallic Nano-Particle Boundary Element Method (MNPBEM) based on the boundary element method. The diameter and length of nanorod are 40 nm and 100 nm, respectively. The fraction of Ag in...

In view of the wreath of potential functionalities two-dimensional (2D) transition-metal dichalcogenides can offer, we study here tuning pathways of 2D lateral arrangements of structures. Specifically, we have systematically doped a pristine 2D MoS2 with WS2 domains of varying sizes. The resulting materials made of MoS2 with WS2 have distinct struc...

We have calculated the sensitivity of gold nanorod (AuNR) in water solution and methylene-blue based on boundary element method with varying diameter of the nanorod, D are 20 nm, 40 nm, 60nm, and 80 nm. The aspect ratio was varied from 1.5 to 3.5 according to diameter. The dielectric function of AuNR based on Christy and Johnson experiment. To unde...

We have studied the effect on localized surface plasmon resonance (LSPR) of Au-nanorod (AuNR) coated TiO 2 (Au@TiO 2 ) and SiO 2 (Au@SiO 2 ). The length and diameter of AuNR are 70 nm and 20 nm, respectively. For this purpose, then AuNR was coated by TiO 2 and SiO 2 with thickness varying from 2nm to 20nm with increment 2nm. The LSPR exhibited two...

In this study, we have investigated the tunability of localized surface plasmon resonance (LSPR) spectra of the magneto-plasmonic system composed of Au-coated Fe3O4 (Fe3O4@Au) by public optical simulation, MNPBEM based on boundary element method calculation. The magneto-plasmonic system is modeled nanorod core-shell structure with three different c...

DNA units, the nucleobases, are probed with diamond (111) surfaces. The nucleobases are placed on top of a diamond surface interacting in a very specific way with the surface atoms. Different elements, such as hydrogen, nitrogen, and fluorine are chosen for the termination of the diamond. The energetic features and electronic properties of the comb...

We have systematically investigated the localized surface plasmon resonance (LSPR) of the silver nanoparticles by using electron energy loss spectroscopy (EELS) and optical simulation based on boundary element methods with respect to the diameter and the impact parameter variations. The both peaks of EELS and optical curve were occurred from 3.2 to...

In this study, we have systematically investigated the sensitivity of surface plasmon resonance bimetallic silver-gold alloys by means of metallic nanoparticle simulation, MNPBEM with respect to the diameter, mole fraction, and refractive index medium variation. The sensitivity of surface plasmon resonance was obtained from a fitting linear between...

In this work, we have systematically investigated the spectra localized surface plasmon (LSPR) and the plasmonic resonance sensitivity of the silver nanoparticles (Ag-NPs) coated polyvinyl alcohol (PVA) by means of numerical study based on BHMie approximation with respect to the diameter of Ag-NPs, the thickness of PVA and the refractive index of m...

In this work, we have systematically investigated the polarization and distance effect of Ag-NPs double sphere to localized surface plasmon resonance (LSPR) using metallic nanoparticles simulation based on boundary element approximation. Two way polarizations were applied to Ag-NPs double sphere, in parallel and perpendicular polarizations. LSPR pr...

In this study, we have investigated the LSPR spectra of the silver nanoparticles (Ag-NPs) coatedby polyvinyl alcohol (PVA) by means of a numerical study using Bohren-Huffman-Mie (BHMie) approximation. The LSPR of Ag-NPs shifted to red-shift as the diameter size of Ag-NPs and the thickness of PVA increased. The peak of the LSPR spectra exponentially...