Abhijit Ghosh

A single probe for sensing both acetate and aluminum(III): visible region detection, red fluorescence and human breast cancer cell imaging

A single probe (L) can recognise both AcO− and Al3+ as prepared by coupling 2-hydroxy-1-naphthaldehyde with hydrazine. Both the ions provide visible range emission and absorbance upon interaction with the probe allowing their naked eye detections. AcO− sensing is attributed to the formation of hydrogen-bond while Al3+ recognition is due to the combination of three effects, viz. inhibition of excited-state proton transfer (ESPT), CHN isomerization and chelation-enhanced fluorescence (CHEF).

Colorimetric and fluorescence recognition of tryptophan and histidine using phthalaldehyde based probe: experimental, computational, cell imaging and fish tissue analysis

A phthalaldehyde based colorimetric and fluorescence probe (BENPH), selective for tryptophan (Trp) and histidine (His) has been developed. BENPH and its Trp and His adducts are characterized by FTIR, 1H NMR and ESI-Mass spectroscopy. Computational studies support the experimental findings. BENPH can image intracellular Trp and His under a fluorescence microscope. The developed method is used to determine Trp and His in fish muscle.

Human Development with Fractional Mobility

The importance of positional mobility indices can be well illustrated using the following cases discussed by Dasgupta (2008). There he considered the story of two girls-one Becky in a suburban town of American Midwest and a Desta in rural Ethiopia. He argued that the lives of these two girls (who are “intrinsically very similar” Dasgupta (2008)) are so distinct from each other that they could be imagined to inhabitate different worlds. He describes Desta’s world as follows:, “Desta knows well that she will be married (in all likelihood to a farmer, like her father) when she reaches eighteen and will then live on her husband’s land in a neighboring village. She expects her life to be similar to that of her mother.” In the terminology of mobility analysis, Desta finds herself in a perfectly immobile position. In contrast, Becky’s world is depicted as a dynamic changing world. “Becky’s parents also remark that her generation will be more prosperous than they.” In conclusion, Dasgupta (2008) asserts, “In this article, I have used Becky’s and Desta’s experiences to show how it can be that the lives of essentially very similar people can become so different.”