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  1. No Access

    Article

    Photoinduced electron transfer between triplet erythrosin dianion and highly charged ionic quenchers

    The lifetime of the lowest triplet state of the dianion erythrosin B depends on its concentration because of self-quenching. The self-quenching rate constants vary with the solution viscosity at room temperatu...

    Asim Mansha, Günter Grampp, Stephan Landgraf in Monatshefte für Chemie - Chemical Monthly (2011)

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    Article

    Absorption spectra of coumarin and its derivatives

    Natural compounds are very much important as they can cure diseases naturally without harmful effects from natural sources. Coumarin is also a natural compound and a large number of coumarins almost 1300 couma...

    Sana Fatima, Asim Mansha, Sadia Asim, Alina Shahzad in Chemical Papers (2022)

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    Article

    Review article on “effects of ions on the fluorescence of coumarin derivatives”

    Coumarin, the chromanone, has a keto group at position 2. It plays a vital role as a plant and human metabolite, and as a fluorescent dye. Presently, the effects of various ions on different groups of coumarin...

    Maham Ejaz, Asim Mansha, Sadia Asim, Alina Shahzad in Chemical Papers (2022)

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    Article

    Review of recent advancements in fluorescent chemosensor for ion detection via coumarin derivatives

    Fluorescent chemosensors are highly valuable in a variety of fields including environmental chemistry, analytical chemistry and biomedical science. They have provided accurate, online and low-cost detection of...

    Asim Mansha, Syeda Anam Asad, Sadia Asim, Shamsa Bibi, Shafiq-Ur- Rehman… in Chemical Papers (2022)

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    Article

    Sensory detection of selective substituted acyl chloride and nitrobenzene-sulfonyl chloride by interaction with 1-amino-4-hydroxy-9,10-anthraquinone using spectrophotometry and cyclic voltammetry

    Chemical compounds belonging to the quinone class are known for their cyclic diketone structures. Anthraquinone derivatives have been used as sensing materials and dyes or pigments. The spectroscopic and volta...

    Bushra Tariq, Asim Mansha, Sadia Asim, Sobia Noreen in Chemical Papers (2024)

  6. No Access

    Article

    Sensory detection of selective substituted acyl chloride and nitrobenzene sulfonyl chloride by interaction with 1-amino-4-hydroxy-9,10-anthraquinone using spectrophotometry and cyclic voltammetry

    Chemical compounds belonging to the quinone class are known for their cyclic diketone structures. Anthraquinone derivatives have been used as sensing materials and dyes or pigments. The spectroscopic and volta...

    Bushra Tariq, Asim Mansha, Sadia Asim, Sobia Noreen in Chemical Papers (2024)