A5084175779- Luminescence and Fluorescent Materials
- Porphyrin and Phthalocyanine Chemistry
- Molecular Sensors and Ion Detection
- Nanoplatforms for cancer theranostics
- Organic Light-Emitting Diodes Research
- Advanced biosensing and bioanalysis techniques
- Organoboron and organosilicon chemistry
- Photochemistry and Electron Transfer Studies
- Organic Electronics and Photovoltaics
- Synthetic Organic Chemistry Methods
- Polydiacetylene-based materials and applications
- Boron Compounds in Chemistry
- Boron and Carbon Nanomaterials Research
- Catalytic Cross-Coupling Reactions
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
Indian Institute of Technology Bombay
2011-2015
Center for Excellence in Basic Sciences
2013
University of Cologne
2013
Indian Institute of Technology Indore
2010-2012
Abstract Nucleophilic substitution reactions of 2‐, 3‐ and 4‐hydroxypyridines with 3,5‐dibromo meso ‐aryl ‐furyl boron‐dipyrromethenes (BODIPYs) resulted in the formation corresponding 3,5‐bis(oxopyridinyl)‐BODIPYs 3,5‐bis(pyridinyloxy)‐BODIPYs decent yields. The effect a pyridone versus an oxypyridine at 5‐positions on spectral, electrochemical photophysical properties were studied as function solvent. exhibit broad, red‐shifted absorption emission bands, decreased quantum yields lifetimes,...
Abstract Aza‐boron‐dipyromethene (aza‐BODIPY) derivatives 1 – 6 were synthesized for the first time by employing palladium catalyzed Suzuki–Miyaura coupling on dibromo‐aza‐BODIPY. Photophysical and electrochemical properties of these compounds studied in solution. Absorption emission maxima observed near‐infrared (NIR) region found to extend up 754 751 nm, respectively. NIR fluorescence quantum yields chloroform as high 0.45. Optical band gaps measured from onset absorption spectra thin...
Abstract Four covalently linked trichromophore systems containing a central boron dipyrromethene (BODIPY) unit connected to porphyrin through the 3‐position and core‐modified or expanded 5‐position were synthesized by treating 3‐bromo‐5‐porphyrinyl BODIPY 3‐bromo‐5‐rubyrinyl with corresponding hydroxy hydroxy‐expanded in CHCl 3 at 60 °C. The compounds are freely soluble common organic solvents confirmed mass spectrometry 1D 2D NMR spectroscopy techniques. absorption electrochemical studies...
Abstract Cyclotriphosphazene and cyclotetraphosphazene appended with six eight sapphyrin units, respectively, were prepared by treating N 3 P Cl 6 4 8 the appropriate equivalents of 5,10,15‐tri( p ‐tolyl)‐20‐(4‐hydroxyphenyl)‐25,27,29‐trithiasapphyrin in tetrahydrofuran (THF) presence Cs 2 CO at temperatures 0 to 60 °C for 8–12 h. The two multi‐expanded porphyrin assemblies soluble common organic solvents, their identities confirmed corresponding molecular ion peak MALDI‐TOF mass spectra. 1D...