Drink a cup of Coffee

A cup of coffee a day can halve the risk of cancers affecting the mouth and gullet, according to Japanese scientists.
To reach the conclusion, the researchers tracked patients for 13 years and found that those drinking at least one cup a day were much less likely to get tumours than those who hardly ever drank coffee.The study has been published in the American Journal of Epidemiology.
The study claims daily caffeine hit could help minimise some of the risk from alcohol and tobacco, the main causes of the cancers, reports the Daily Express.According to researchers at the Tohoku University School of Medicine in Japan, chemicals found in caffeine protect the body's DNA against damage that can lead to cancer.
Researchers into the effects of coffee studied 40,000 people aged 40 to 64 over a 13-year period with 157 of the volunteers developing mouth or gullet cancer.Analysis of diet and lifestyle found those drinking at least one coffee a day were 49 per cent less likely to be affected.
The scientists said in their report: "One of the most significant findings was the inverse association between coffee and those at high risk of these cancers, namely current drinkers and smokers.
"Although quitting alcohol and smoking is the best known way to help reduce the risk, coffee could be a preventive factor."

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My Publication List

 Efficient and Simple Colorimetric Fluoride Ion Sensor Based On Receptors Having Urea and Thiourea Binding Sites. Org. Letter. 2004, 6, 3445. D.Amilan Jose, D. Krishna Kumar, Bishwajit Ganguly and Amitava Das.

 Synthesis, Characterization, Physicochemical and Photophysical Studies of Some Redox Switchable NIR dye derived from Ruthenium-dioxolene-porphyrin System. Inorg. Chem. 2005, 44, 2414. D.Amilan Jose, Atindra D. Shukla, D. Krishna Kumar, Bishwajit Ganguly, Amitava Das, G. Ramakrishna and H. N. Ghosh.

 Urea and thiourea based efficient colorimetric sensors for oxyanions. Tetrahedron. Lett. 2005, 46, 5343. D. Amilan Jose, D. Krishna Kumar, B. Ganguly and Amitava Das.

 Density Functional Study towards the Preferential Binding of Anions to Urea and Thiourea Molecules. Tetrahedron.Lett. 2007, 48, 3695. D. Amilan Jose, Ajeet singh, B.Ganguly and Amitava Das 

 Phenol and catechol-based Ru(II)-polypyridyl complexes as new class of colorimetric sensor for fluoride ion. Inorg. Chem. 2007, 46,5576. D. Amilan Jose, Prasenjit Kar, Debasis Koley, Bishwajit Ganguly, Walte Thiel, Hirendra N. Ghosh, Amitava Das.

 ATP-Sensor in Aqueous solution and its application to yeast cells. Org.Lett 2007, 9, 1978. D. Amilan Jose, Sandhya mishra, Amrita Ghosh and Amitava Das.

Ultrafast Dynamics and Excited State Deactivation of [Ru(bpy)₂Sq]⁺ and its Derivatives J. Phys. Chem. B.  2006, 110, 10197 . G. Ramakrishna, D. Amilan Jose, D. Krishna Kumar, Amitava Das and  Hirendra N. Ghosh.

Dynamics of Charge Transfer in Strongly Coupled Porphyrin dye Sensitized Wide    Bandgap Semiconductor Nanoparticles.J. Phys. Chem.B.  2006, 110, 9012.G.Ramakrishna, D. Amilan Jose, D. Krishna Kumar, Amitava Das.

Physicochemical and photophysical studies on porphyrin-based donor-acceptor systems: effect of  redox potentials on ultrafast electron transfer dynamics. J.Phys.Chem. B. 2007, 30, 9078.  D. Amilan Jose, Atindra D. Shukla, G. Ramakrishna, D.K. Palit,H.N. Ghosh  and Amitava  Das.

Rugby Ball Shaped Sulfate-Water-Sulfate Adduct Encapsulated in a Neutral Molecular Receptor Capsule. Inorg. Chem.2007, 46, 5817. D. Amilan Jose, D. Krishna Kumar, B. Ganguly and Amitava Das.

Role of Positional Isomers on Receptor-Anion Binding and Evidence for Resonance Energy Transfer. Tetrahedron, 2007, 48, 12007. D. Amilan Jose, D. Krishna Kumar, Prasenjit Kar, Sandeep Verma, Amrira Ghosh, Bishwajit Ganguly, Hirendra. N. Ghosh, and Amitava Das.

A Nonpolymeric Hydrogelator Derived from N-(4-Pyridyl) isonicotinamide. Langmuir, 2004, 20, 10413.  D. Krishna Kumar, D. Amilan Jose, Parthasarathi Dastidar and Amitava Das.

Nonpolymeric Hydrogel Derived from Trimesic Amides. Chem. Mater. 2004, 16, 2332. D. Krishna Kumar, D. Amilan Jose, Parthasarathi Dastidar and Amitava Das.

Covalent Assembly of Stilbene-based Monolayers: Factors Controlling Molecular Interactions. J. Phys. Chem. B, 2004, 108, 17505. Atindra D. Shukla, David Strawser,  Andre Lucassen , Dalia Freeman, Hagai Cohen, D. Amilan Jose,  Amitava Das, Guennadi Evmenenko, Pulak Dutta, and Milko. E. van der Boom.

How Robust is the N – H …Cl₂ – Cu synthon ? Crystal structure of some perchlorocuprates Crystal Growth and Design, 2005, 5, 651. D. Krishna Kumar, Amar Ballabh, D. Amilan Jose, Parthasarathi Dastidar  and Amitava Das.

A Comparative Langmuir-Blodgett Study on a Set of Covalently Linked Porphyrin-Based Amphiphiles: A Detailed Atomic Force Microscopic Studies. Langmuir, 2005, 21, 3413. Pradyut Ghosh, D. Amilan Jose, Atindra D. Shukla, Jignesh J. Shukla,  Amitava Das_, Pei  Sun, and Ratman. 

_{Mixed-Ligand Complexes of Ruthenium(II) Containing New Photo- or Electro-active Ligands: Synthesis, Spectral Characterization and DNA Interactions. Jr. Biolog. Inorg. Chem.  2005, 10, 496. Tamal Ghosh, Atindra D. Shukla, D. Amilan Jose, D. Krishna Kumar and Bhaskar G. Maiya, A. Samanta,  Amitava Das.}

_{First Snapshot of A Nonpolymeric Hydrogelator Interacting with its Gelling solvents. Chem. Commun. 2005, 4059. D. Krishna Kumar, D.Amilan Jose, Amitava Das and Parthasarathi Dastidar.}

_{Strongly Coupled Ruthenium Polypyridyl complexes for Efficient Electron Injection in Dye sensitized Semiconductor Nanoparticles. J. Phys. Chem. B; 2005, 109, 15445. G. Ramakrishna, D. Amilan Jose, D. Krishna Kumar, Amitava Das, D.K. Palit, and H. N. Ghosh.}

_{From diamondoid network to (4, 4) net: Effect of ligand Topology on the supramolecular structural diversity. Inorg. Chem. 2005, 44, 6933. D. Krishna Kumar, D. Amilan Jose, Amitava Das, and Parthasarathi Dastidar.}

_{Preferential binding of Mg²⁺ ion by easily synthesizable anthraquinone based chromogenic receptors. Polyhedron. 2007, 26, 1317. Prasenjit Kar, Moorthy Suresh, D. Krishna Kumar, D. Amilan Jose, Bishwajit  Ganguly and Amitava Das.}

_{[2,2’-Bipyridyl]-3,3’-diol as a Molecular Half-Subtractor Org.Lett. 2007, 9, 441. Moorthy Suresh, D. Amilan Jose and Amitava Das.  Generation of nano-structures by the aggregation of porphyrin derivative with long alkane chain in mix-solvent. Journal of Nanomaterials. 2007, DOI: 10.1155/2007/47234 A. Ghosh, T. Selvamani, D. Amilan Jose, A. Das and I. Mukhopadhyay.}

_{Colorimetric Sensor for Triphosphates and Their Application as a Viable Staining Agent for Prokaryotes and Eukaryotes. Anal.Chem. 2008, 80, 5312. Amrita Ghosh, Anubama Shrivastav, D. Amilan Jose, Sanjeev Mishra, C. K. Chandrakanth, Sandya Mishra and Amitava Das.} 

Fluorescein

Fluorescein is a fluorophore commonly used in microscopy, in a type of dye laser as the gain medium, in forensics and serology to detect latent blood stains, and in dye tracing. Fluorescein has an absorption maximum at 494 nm and emission maximum of 521 nm (in water). Fluorescein was the first substance used to dye the river green on St. Patrick's Day in 1962.

One of its more recognizable uses is in the Chicago River, where fluorescein is used to dye the river green on St. Patrick's Day.Other uses of fluorescein include using it as a water-soluble dye added to rainwater in environmental testing simulations to aid in locating and analyzing any water leaks, and in Australia and New Zealand as a methylated spirit dye.

Color chemistry...

I love to do Chemistry with color Change.....