A5072438640- Supramolecular Self-Assembly in Materials
- Luminescence and Fluorescent Materials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Chemical Synthesis and Analysis
- Perovskite Materials and Applications
- ZnO doping and properties
- Photochromic and Fluorescence Chemistry
- Crystallography and molecular interactions
- Organic Electronics and Photovoltaics
- Organic Light-Emitting Diodes Research
- Advanced biosensing and bioanalysis techniques
- Polydiacetylene-based materials and applications
- Supramolecular Chemistry and Complexes
- Molecular Sensors and Ion Detection
- Transition Metal Oxide Nanomaterials
- Polyoxometalates: Synthesis and Applications
- Synthesis and Properties of Aromatic Compounds
- Gas Sensing Nanomaterials and Sensors
- Conducting polymers and applications
- Inorganic Fluorides and Related Compounds
- Quantum Dots Synthesis And Properties
- Organic and Molecular Conductors Research
- Surface Chemistry and Catalysis
- Photochemistry and Electron Transfer Studies
Illinois Institute of Technology
2017-2023
University of Illinois Chicago
2022
Indian Institute of Technology Indore
2014-2017
Devi Ahilya Vishwavidyalaya
2015
It is recognized that metal organic complexes serve as sensitizers can present various degrees of challenges viz. synthesis and stability for photonic applications such triplet-triplet annihilation based photon upconversion (TTA-PUC). Presently, researchers, including our group, are turning their attention toward purely triplet sensitizers, which be handled more easily management science. In this review, we surveyed recently developed all-organic chromophoric systems were devised used...
Abstract Sonication‐induced tryptophan‐ and tyrosine‐based peptide bolaamphiphile nanofibers have been used to synthesize stabilize Pd nanoparticles under physiological conditions. The self‐assembly process has thoroughly studied by using several spectroscopic microscopic techniques. stiffness of the soft hydrogel matrix was measured an oscillatory rheological experiment. FTIR circular dichroism (CD) experiments revealed a hydrogen‐bonded β‐sheet conformation molecules in gel‐phase medium....
Here, we report the effects of electron donor and acceptor units attached with benzoselenadiazole for change in optoelectronic packing patterns solid states. We have synthesized 4-methoxybenzene, naphthalene, 4-nitrobenzene capped benzoselenadiazoles (compounds 1–3 respectively) studied their photophysical as well electrochemical properties. All three molecules show two absorption bands (π–π transition band CT-band). Three (1–3) orange, yellow-green, green colors dichloromethane solutions...
We report a novel reductive desulfurization reaction involving π-acidic naphthalene diimides (NDI) 1 using thionating agents such as Lawesson's reagent. Along with the expected thionated NDI derivatives 2–6, new heterocyclic naphtho-p-quinodimethane compounds 7 depicting broken/reduced symmetry were successfully isolated and fully characterized. Empirical studies theoretical modeling suggest that was formed via six-membered ring oxathiaphosphenine intermediate rather than usual four-membered...
Optical and self-assembly nature of an aromatic dipeptide Phe-Phe (FF) functionalized benzo[<italic>ghi</italic>]perylene monoimide (BPI) are studied. Acceptor BPI-FF-OMe molecule shows white light emission upon energy transfer from donor pyrenebutyric acid molecule.
Lamellar hybrid inorganic/organic nanostructures comprising of alternating layers benzo[ghi]perylene monoimide and Cd-doped ZnO called BPyM/CZO nanohybrids have been synthesized electrochemically on Ga-doped ZnO/Si. In order to study the effect organic surfactant, inorganic CZO nanorods also synthesized. The role annealing surfactant morphology, structure, composition opto-electronic properties is analyzed. are c-axis oriented preferentially with their (002) direction perpendicular substrate...
Aromatic organic molecules serve as optoelectronic materials owing to their intrinsic optical and electronic properties. Herein, self-assembled lamellar nanostructures photoconductor hybrids, which are obtained from naphthalene-2-methoxycarbonyl (Nmoc)-capped peptide amphiphiles, described. Hybrid constructed in a controlled manner by an electrochemical deposition technique combination with the inorganic Zn(OH)2 phase. Inorganic layers turn into semiconductor ZnO upon annealing at 150 °C...
We report the synthesis and photophysical characterization of a triplet donor–acceptor dyad (3), which was constructed from quinoidal naphthalene thioamide sensitizer 1 perylene derivative 2 as acceptor. The interest exhibits convoluted characteristics donor acceptor chromophores. kinetic analysis phosphorescence 3 produced two lifetimes τ1 = 1.1 ms τ2 20 ms. shorter component attributed to lifetime 3(1)* moiety (within dyad) longer can be assigned either state 3(2)* or charge transfer (CT)*...
Nanostructured blends of inorganic and organic materials could unwind unique properties boost performance over each individual constituent. We demonstrate here a hybrid photodetector containing ZnO functionalized oligo(p-phenylenevinylene), which was deposited electrochemically onto an electrode. XRD results reveal that the conjugates formed are lamellar in nature. As photodetectors, room-temperature responsivity as high 0.2 AW–1 at 330 nm with bias −20 V, maximum external quantum efficiency...
A variety of hybrid nanostructures have been developed that emit white light. Two different white-light-emitting systems are reported. These cadmium-doped zinc oxide nanosheets and complex lamellar consist alternating inorganic domains with the self-assembled aromatic-capped peptide BPI-FF-OH (BPI: benzo[ghi]perylene monoimide, F: d-phenylalanine). An electrochemical method is employed to synthesize organic/cadmium-doped nanoflakes on a gallium-doped ZnO/p-Si (111) substrate. External...
Electrochemical deposition of metal hydroxide in presence peptide amphiphile results self-assembled nanoscale hybrid thin films. We demonstrate here the self-assembly three small aromatic peptides (NmYW, NmFW and NmFY) with transition hydroxides (Co(OH)2, Ni(OH)2 Zn(OH)2). Here are used as structure directing agent for construction organic/inorganic nanostructured materials. Electrodeposition different peptide/metal is carried out potentoiodynamically applying constant potential using indium...
Two phenylene based geometrical/isomeric triplet ortho- and para–dyads (o–3 p–3, respectively) were synthesized fully characterized using advanced photophysical tools computations. In dyad o–3, the through-space donor-acceptor interactions led to simultaneous energy transfer charge with identical kinetics. On other hand, in it was found that spacer favors a fast delocalization over process. Furthermore, analysis of results from present investigation indicates deactivation photo-excited...
Hybrid inorganic/organic Cd-doped ZnO nanostructures called CZO nanohybrids were electrochemically synthesized on Ga-doped ZnO/Si. The comprise alternating layers of organic surfactant and inorganic phase. These lamellar structured found to be c-axis oriented, perpendicular the substrate with good crystallinity. During photoluminescence measurement, a strong orange emission from was observed. have band gap 3.3 eV, indicating shrinkage relative ZnO. hold great promise for development hybrid...
Abstract Peptide‐based bolaamphiphile nanofibers are synthesized and used to stabilize Pd‐nanoparticles.
Quinoidal acene-thioamides are a new class of organic light-harvesting chromophores used for several applications, including triplet photosensitization and photometric sensing metal ions. These chromophores' versatility attractive photophysics make them suitable engineering transition-metal–organic hybrid photomaterials. In this regard, we investigated the self-assembly behavior N,N-diphenylquinodimethyl thioamide (Ph2QDM) nanostructures on transition-metal surfaces potential applications in...