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Browsing by Subject "Light-emitting-diodes"

Now showing items 1-9 of 9

2-Thiopheneacetato-based one-dimensional coordination polymer of Tb3+: Enhancement of terbium-centered luminescence in the presence of bidentate nitrogen donor ligands

Shyni, R; Reddy, M L P; Cowley, A H; Findlater, M (Wiley, 2008)

Four new lanthanide(III) complexes of 2-thiopheneacetic acid (HTPAC), [Tb(TPAC)(3)center dot H2O](n) (1), [Gd(TPAC)(3)center dot H2O](n) (2), [Tb(TPAC)(3)(phen)](2) (3) and [Tb(TPAC)(3)(bath)](2) (4) (phen = 1,10-phenanthroline; ...
Amphiphilic pi-conjugated poly (m-phenylene) photosensitizer for the eu3+ ion: The role of macromolecular chain aggregation on the color tunability of lanthanides

Balamurugan, A; Reddy, M L P; Jayakannan, M (American Chemical Society, 2011)

Here, we report new carboxylic functionalized poly-(phenylene)s and their oligomers as selective and efficient photosensitizers for Eu3+ ions. Palladium-catalyzed Suzuki polycondensation was developed for the synthesis of ...
Detection of zinc ions under aqueous conditions using chirality assisted solid-state fluorescence of a bipyridyl based fluorophore

Sreejith, S; Divya, K P; Ajayaghosh, A (Royal Society of Chemistry, 2008)

A pyrrole end-capped bipyridyl ligand 1a incorporating a chiral handle exhibited high solid-state emission when compared to the achiral analogue 1b and to the racemic molecule 1c which allowed the design of a reusable ...
An efficient synthesis of indolo[3,2-a]carbazoles via the novel acid catalyzed reaction of indoles and diaryl-1,2-diones

Vijay Nair, G; Vidya, N; Abhilash, K G; Suresh, E (Royal Society of Chemistry, 2008)

A mild and efficient one pot method for the synthesis of indolo[3,2-a] carbazole derivatives by the para-toluenesulfonic acid catalyzed condensation of indole with acyclic 1,2-diones is described. With cyclobutene-1,2-diones ...
Enhanced Eu3+ red luminescence in scheelite based oxides, CaLaSbWO8

Reshmi, V R; Prabhakar Rao, P; Mariyam Thomas; Mahesh, S K; Linda Francis, T (ECS, 2013)

Scheelite type tungstate based red phosphors, CaLa1-xSbWO8:xEu(3+) (x = 0.05, 0.10, 0.15, 0.20 0.25, 0.50 and 1) were synthesized by the conventional solid state method. The crystalline structure, morphology and photoluminescence ...
Probing the pi-stacking induced molecular aggregation in pi-conjugated polymers, oligomers, and their blends of p-phenylenevinylenes

Amrutha, S R; Jayakannan, M (American Chemical Society, 2008)

The role of pi-stack induced molecular aggregation on solution and solid-state luminescent properties was investigated for the tricyclodecane substituted bulky (p-phenylenevinylene)s (BTCD-60, with 60% bulky group), ...
Renewable resource-based poly (m-phenylenevinylene)s and their statistical copolymers: Synthesis, characterization, and probing of molecular aggregation and Forster energy transfer processes

Anish Cyriac; Amrutha, S R; Jayakannan, M (Wiley, 2008)

We report a novel poly (m-phenylenevinylene)s and their copolymers based on renewable resource starting material 3-pentadecylphenol to trace the Forster energy transfer process and molecular aggregation in the pi-conjugated ...
Solid state optical properties of 4-alkoxy-pyridine butadiene derivatives: Reversible thermal switching of luminescence

Saleesh Kumar, N S; Shinto Varghese; Rath, N P; Suresh Das (American Chemical Society, 2008)

The synthesis and optical properties of a series of alkoxyphenyl-pyridyl butadiene derivatives in solution and in the solid state are described. All the derivatives were practically nonfluorescent in solution but showed ...
Structure control of pi-conjugated polymers for enhanced solid-state luminescence: Synthesis and liquid crystalline and photophysical properties of new bulky poly(p-phenylenevinylene)s and oligo(phenylenevinylene)s bearing tricyclodecane pendants

Amrutha, S R; Jayakannan, M (American Chemical Society, 2007)

A series of novel highly luminescent bulky oligo(phenylenevinylene)s (MTCD-OPV, BTCD-OPV, and MEH-OPV), bulky pi-conjugated poly(p-phenylenevinylene)s (MTCD-PPV, BTCD-PPV), and symmetrically or unsymmetrically substituted ...

Now showing items 1-9 of 9

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