• Dr Ajayaghosh A 
  • Director, CSIR-NIIST
  • ajayaghosh62[at]gmail.com | ajayaghosh[at]niist.res.in
  • 0471-2515306 (Off)    0471-2491592(Res)     +91-9446059059
  • http://niist.irins.org/profile/43074

 List of Publications

[2020] [2019] [2018] [2017] [2016]
[2015] [2014]

2020

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  • A New Pentacyclic Pyrylium Fluorescent Probe that Responds to pH Imbalance During Apoptosis.
    S. Chakraborty, M. M. Joseph, S. Varughese, S. Ghosh, K. K. Maiti, A. Samanta,* A. Ajayaghosh*
    Chem. Sci. 2020, 11, DOI: 10.1039/D0SC02623A. (This article is part of the themed collection: Celebrating 10 years of Chemical Science)
    Full Text: Link


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  • Enhanced Emission in Self-Assembled Phenyleneethynylene Derived pi-Gelators.
    G. Das, R. Thirumalai, B. Vedhanarayanan, V. K. Praveen,* A. Ajayaghosh*
    Adv. Opt. Mater. 2020, 8, 2000173. (Part of special issue on 20 years of aggregation-induced emission research)
    Full Text: Link


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  • Supramolecular Surface Charge Regulation in Ionic Covalent Organic Nanosheets for Reversible Exfoliation and Controlled Bacterial Growth.
    A. Mal, S. Vijayakumar, R. K. Mishra, J. Jacob, R. S. Pillai, B. S. Dileep Kumar, A. Ajayaghosh*
    Angew. Chem., Int. Ed. 2020, 59, 8713. (VIP Article)
    Full Text: Link


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  • Metal Ion-Induced Capacitance Modulation in Near-Isostructural Complexes-Derived Electrochromic Coordination Polymers.
    I. Mukkatt, P. M. Anjana, A. Nirmala, R. B. Rakhi, S. Shankar,* A. Ajayaghosh*
    Mater. Today Chem. 2020, 16, 100260.
    Full Text: Link


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  • Self-Assembled Extended pi-Systems for Sensing and Security Applications.
    V. K. Praveen,* B. Vedhanarayanan, A. Mal, R. K. Mishra, A. Ajayaghosh*
    Acc. Chem. Res. 2020, 53, 496?507.
    Full Text: Link


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  • Diketopyrrolopyrrole-Based Functional Supramolecular Polymers: Next-Generation Materials for Optoelectronic Applications.
    S. Ghosh, S. Shankar, D. S. Philips, A. Ajayaghosh*
    Mater. Today Chem. 2020, 16, 100242.
    Full Text: Link

2019[to top]

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  • Self-Recovering Mechanochromic Chiral pi-Gelator
    K. Kartha, V. S. Nair, V. K. Praveen, M. Takeuchi, A. Ajayaghosh*
    J. Mater. Chem. C 2019, 7, 1292–1297.
    Full Text: Link

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  • Charge Carrier Polarity Modulation in Diketopyrrolopyrrole–Based Low Band Gap Semiconductors by Terminal Functionalization
    S. Ghosh, R. Raveendran, A. Saeki, S. Seki, M. A. Namboothiry, A. Ajayaghosh*
    ACS Appl. Mater. Interfaces 2019, 11, 1088?1095.
    Full Text: Link

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  • Supramolecular Gel Phase Controlled [4 + 2] Diels-Alder Photocycloaddition for Electroplex Mediated White Electroluminescence
    S. Das, N. Okamura, S. Yagi, A. Ajayaghosh*
    J. Am. Chem. Soc. 2019, 141, 5635?5639.
    Full Text: Link

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  • Hybrid Materials from Poly[vinyl chloride] and Organogels
    Z. Zoukal, S. Elhasri, A. Carvalho, M. Schmutz, D. Collin, V. K. Praveen, A.Ajayaghosh, J.-M. Guenet*
    ACS Appl. Polym. Mater. 2019, 1, 1203–1208.
    Full Text: Link

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  • Bimodal Detection of Carbon Dioxide Using Fluorescent Molecular Aggregates.
    R. K. Mishra,* S. Vijayakumar, A. Mal, V. Karunakaran, J. C. Janardhanan, K. K. Maiti, V. K. Praveen,* A. Ajayaghosh*
    Chem. Commun. 2019, 55, 6046?6049.
    Full Text: Link

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  • Controlling the Supramolecular Polymerization of Donor-Acceptor pi-System Through Hydrogen Bond Intervention.
    V. S. Nair, B. Vedhanarayanan, A. Ajayaghosh*
    ChemPlusChem 2019, 84, 1405-1412. (Part of special issue on p?conjugated (macro)molecules and their applications supramolecular chemistry, highlighted with a cover page)
    Full Text: Link

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  • Solution Processable Deep-Red Phosphorescent Pt(II) Complex: Direct Conversion from Its Pt(IV) Species via a Base-Promoted Reduction.
    L. Allison, H. Lim, A. Shukla, V. Ahmad, M. Hasan, K. Deshmukh, R. Wawrzinek, S. K. M. McGregor, J. K. Clegg, V. V. Divya, C. Govind, C. H. Suresh, V. Karunakaran, K. N. N. Unni, A. Ajayaghosh, E. B. Namdas,* S.-C. Lo*
    ACS Appl. Electron. Mater. 2019, 1, 1304–1313.
    Full Text: Link

2018[to top]

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  • Intramolecular Exciton-Coupled Squaraine Dyes for Dye-Sensitized Solar Cells
    T. Maeda,* T. V. Nguyen, Y. Kuwano, X. Chen, K. Miyanaga, H. Nakazumi, S. Yagi, S. Soman, A. Ajayaghosh*
    J.Phys. Chem. C 2018, 122, 21745–21754.

    Full Text: LINK

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  • Enzyme-Driven Switchable Fluorescence-SERS Diagnostic Nano Cocktail for the Multiplex Detection of Lung Cancer Biomarkers
    G. Saranya, M. M. Joseph, V. Karunakaran, J. B. Nair, V. N. Saritha, V. S. Veena, K. Sujathan,* A. Ajayaghosh,* K. K. Maiti*
    ACS Appl. Mater. Interfaces 2018, 10, 38807–38818.
    Full Text: Link

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  • A Cyclometalated Ir(III) Complex as Lysosome Targeted Photodynamic Therapeutic Agent for Integrated Imaging and Therapy in Cancer Cells
    K. V. Sudheesh, P. S. Jayaram, A. Samanta, K. S. Bejoymohandas, R. S. Jayasree, A. Ajayaghosh* 
    Chem. -Eur. J. 2018, 24, 10999–11007. (Hot Article, highlighted with a Frontispiece)

    Full Text: LINK

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  • Book Chapter: “Stimuli-Responsive Supramolecular Gels”
    R. K. Mishra, S. Das, B. Vedhanarayanan, G. Das, V. K. Praveen,* A. Ajayaghosh* in Molecular Gels: Structure and Dynamics, Weiss, R. G. (Ed.) Monographs in Supramolecular Chemistry No. 25, RSC, Chapter 7, 190–226, 2018.
    Full Text: LINK

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  • Real Time Imaging and Dynamics of Hippocampal Zn2+ under Epileptic Condition Using a Ratiometric Fluorescent Probe
    H. Santhakumar, R. V. Nair, D. S. Philips, S. J. Shenoy, A. Thekkuveettil, A. Ajayaghosh,* R. S. Jayasree*
    Sci. Rep. 2018, 8, 9069
    Full Text: LINK (Open Access)

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  • A Hybrid Organogel of a Low Band Gap Diketopyrrolopyrrole with PC71BM: Phase Separated Morphology and Enhanced Photoconductivity
    S. Ghosh, S. Das, A. Saeki, V. K. Praveen, S. Seki, A. Ajayaghosh* ChemNanoMat 2018, 4, 831–836. Highlighted with a Cover Picture (Part of   Special Issue on Supramolecular Nanostructures)
    Full Text: LINK (Open Access)

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  • Supramolecular Reassembly of Self-Exfoliated Ionic Covalent Organic Nanosheets for Label-Free Detection of dsDNA
    A. Mal, R. K. Mishra, V. K. Praveen, M. A. Khayum, R. Banerjee, A. Ajayaghosh*  Angew. Chem., Int. Ed. 2018, 57, 8443–8447. (VIP Article)
    Full Text: LINK

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  • Hybrid Materials of 1D and 2D Carbon Allotropes and Synthetic ?-Systems
    B. Vedhanarayanan, V. K. Praveen, G. Das, A. Ajayaghosh*
    NPG Asia Materials 2018, 10, 107-126.  (Invited Review Article)
    Full Text: LINK (Open Access)

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  • Stepwise Control of Host-Guest Interaction Using a Coordination Polymer
    R. D. Mukhopadhyay, G. Das, A. Ajayaghosh* Nat. Commun. 2018, 9, 1987
    Full Text: LINK (Open Access)

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  • Transforming a C3-Symmetrical Liquid Crystal to a ?-Gelator by Alkoxy Chain Variation
    A. Sandeep, V. K. Praveen, D. S. Shankar Rao, S. Krishna Prasad, A. Ajayaghosh* ACS Omega 2018, 3, 4392–4399. (Invited Article)
    Full Text: LINK (Open Access)

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  • Self-Assembly of Bodipy-Derived Extended ?-Systems
    S. Cherumukkil, B. Vedhanarayanan, G. Das, V. K. Praveen, A. Ajayaghosh* Bull. Chem. Soc. Jpn. 2018, 91, 100–120. (Invited Review) Highlighted with an inside cover – Part of Vol. 90 Commemorative Account: Self-Organization)
    Full Text: LINK (Open Access)

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  • Photokinetic Study on Remarkable Excimer Phosphorescence from Heteroleptic Cyclometalated Platinum(II) Complexes Bearing a Benzoylated 2-Phenylpyridinate Ligand
    N. Okamura, T. Maeda, H. Fujiwara, A. Soman, K. N. N. Unni, A. Ajayaghosh, S. Yagi* Phys. Chem. Chem. Phys. 2018, 20, 542–552.
    Full Text: LINK

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  • pH-Controlled Nanoparticles Formation and Tracking of Lysosomal Zinc Ions in Cancer Cells by Fluorescent Carbazole-Bipyridine Conjugates
    K. V. Sudheesh, M. M. Joseph, D. S. Philips, A. Samanta, K. K. Maiti, A. Ajayaghosh*  ChemistrySelect 2018, 3, 2416–2422.
    Full Text: LINK

     2017[to top]

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  • Creation of ‘Rose Petal’ and ‘Lotus Leaf’ Effects on Alumina by Surface Functionalization and Metal Ion Coordination
    R. D. Mukhopadhyay, B. Vedhanarayanan, A. Ajayaghosh* Angew. Chem., Int. Ed. 2017, 56, 16018–16022. (Hot Paper)
    Full Text: LINK

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  • Supramolecular Nanocomposite as Near Infrared Transmitting Optical Filter for Security and Forensic ApplicationsS. Ghosh, S. Cherumukkil, C. H. Suresh, A. Ajayaghosh* ACS Adv. Mater. 2017, 29, 1703783. (highlighted in Advanced Science News and The Hindu News Paper)Full Text: LINK

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  • Unsymmetrical Squaraine Dye based Chemical Platform for Multiple Analyte RecognitionD. S. Philips, S. Ghosh, K. V. Sudheesh, C. H. Suresh, A. Ajayaghosh* Chem. -Eur. J. 2017, 23, 17973–17980Full Text: LINK

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  • 4. Helix to Super-Helix Transition in p-Systems Self-assembly: Superseding of Molecular Chirality at Hierarchical LevelM. Hifsudheen, R. K. Mishra, B. Vedhanarayanan, V. K. Praveen,* A.      Ajayaghosh* Angew. Chem. Int. Ed. 2017, 56, 12634–12638Full Text: LINK

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  • An Unprecedented Amplification of Near-Infrared Emission in a Bodipy Derived p-System by Stress or GelationS. Cherumukkil, S. Ghosh, V. K. Praveen, A. Ajayaghosh* Chem. Sci. 2017, 8, 5644–5649.Full Text: LINK

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  • A Ratiometric Near Infrared Fluorogen for the Real Time Visualization of Intracellular Redox Status during ApoptosisG. Saranya, P. Anees, M. M. Joseph, K. K. Maiti*, A. Ajayaghosh* ACS Chem. -Eur. J. 2017, 23, 7191–7195. (Hot Paper)Full Text: LINK

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  • Exfoliation of Reduced Graphene Oxide with Self-Assembled ?-Gelators for Improved Electrochemical Performance,B. Vedhanarayanan, B. Babu, M. M. Shaijumon, A. Ajayaghosh* ACS Appl. Mater. Interfaces 2017, 9, 19417–19426.   

    Full Text: LINK

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  • Book Chapter: “Self-Assembly in Sensor Nanotechnology” ,P. Anees V. K. Praveen, K. K. Kartha, A. Ajayaghosh* in Comprehensive Supramolecular Chemistry II , Vol. 9, Raston, C. (Ed.), Elsevier Ltd., 2017.Full Text: LINK

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  • Nanosheets of Organic Molecular Assembly from Aqueous Medium Exhibit High Solid-State Emission and Anisotropic Charge Carrier Mobility,S. Ghosh, D. S. Philips, Akinori Saeki, A. AjayaghoshAparicio, S. Cherumukkil, A. Ajayaghosh* and L. Sánchez* Adv. Mater. 2017, 29, 1605408.   Full Text: LINK


    2016
    [to top]

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  • Color-Tunable Cyano-Substituted Divinylene Arene Luminogens as Fluorescent pi-Gelators
    F. Aparicio, S. Cherumukkil, A. Ajayaghosh* and L. Sánchez*Langmuir 2016, 32, 284–289.  Full Text: LINK

    langImage

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  • A Three-Photon Active Organic Fluorophore for Deep Tissue Ratiometric Imaging of Intracellular Divalent Zinc
    D. S. Philips, S. Sreejith*, T. He, N. V. Menon, P. Anees, J. Mathew, S. Sajikumar, Y. Kang, M. C. Stuparu, H. Sun*, Y. Zhao* and A. Ajayaghosh*
    Chem. Asian J.2016, 11, 1523–1527. Full Text: LINK

    photon_excitation

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  • Real Time Monitoring of Aminothiol Level in Blood Using a Near-Infrared Dye Assisted Deep Tissue Fluorescence and Photoacoustic Bimodal Imaging
    P. Anees, J. Joseph, S. Sreejith, N. V. Menon, Y. Kang, S. W. K. Yu, A. Ajayaghosh*, Y. Zhao*
    Chem. Sci. 2016, 7, 4110–4116. Full Text: LINK(Open Access)

    RSH

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  • Supercoiled Fibres of Self-Sorted Donor-Acceptor Stacks: A Turn-Off/Turn-On Platform for Sensing Volatile Aromatic Compounds
    S. Anjamkudy, V. K. Praveen, K. K. Kartha, V. Karunakaran, A. Ajayaghosh*
    Chem. Sci.2016, 7, 4460–4467.Full Text: LINK(Open Access)

    amines

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  • The Chemistry and Applications of pi-Gels
    S. Ghosh, V. K. Praveen, A. Ajayaghosh*
    Annu. Rev. Mater. Res.2016, 46, 235–262, DOI: 10.1146/annurev-matsci-070115-031557.
    Full Text: LINK

gelators

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  • Conjugated Random Donor-Acceptor Copolymers of [1]Benzothieno[3,2-b]-benzothio-phene and Diketopyrrolopyrrole Units for High Performance Polymeric Semiconductor Applications
    V. S. Nair, J. Sun, P. Qi, S. Yang, Z. Liu*, D. Zhang*, A. Ajayaghosh* Macromolecules 2016, 49, 6334–6342. 
    Full Text: LINK

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  • Formation of Coaxial Nanocables with Amplified Supramolecular Chirality through an Interaction between Carbon Nanotubes and a Chiral ?-Gelator
    B. Vedhanarayanan, V. S. Nair, V. C. Nair, A. Ajayaghosh*Angew. Chem., Int. Ed. 2016, 55, 10345–10349.
    Full Text: LINK

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  • A Pi-Gel Scaffold for Assembling Fullerene to Photoconducting Supramolecular Rods Non-Equilibrium Self-Assembly of C60 in a pi-Gel
    V. S. Nair, R. D. Mukhopadhyay, A. Saeki, S. Seki, A. Ajayaghosh*Science Advances 2016, 2, e1600142.
    Full Text: LINK(Open Access)

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  • A Protein-Dye Hybrid System as Narrow Range Tunable Intracellular pH Sensor
    P. Anees, K. V. Sudheesh, P. Jayamurthy, A. R. Chandrika, R. V. Omkumar, A. Ajayaghosh*
    Chem. Sci. 2016, 7, 6808–6814Full Text: LINK(Open Access)

 2015[to top]

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  • Light Driven Mesoscale Assembly of a Coordination Polymeric Gelator into Flowers and Stars with Distinct Properties
    R. D. Mukhopadhyay, V. K. Praveen, A. Hazra, T. K. Maji, A. Ajayaghosh*
    Chem. Sci.2015, DOI: 10.1039/C5SC02233A.
    Full Text: LINK (Open Access)

    img1

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  • Book Chapter : “Metallosupramolecular Materials for Energy Applications: Light-Harvesting”
    V. K. Praveen, A. Ajayaghosh*, in Functional Metallosupramolecular Materials, J. G. Hardy, F. H. Schacher, (Eds.)
    RSC Smart Materials 2–15,2015.
    Full Text: LINK

    img2

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  • Pyridyl-Amides as a Multimode Self-assembly Driver for the Design of Stimuli Responsive pi-Gelator
    K. K. Kartha, V. K. Praveen, S. S. Babu, S. Cherumukkil, A. Ajayaghosh*
    Chem.Asian J. 2015, 10, 2250–2256.(Part of Special Board Member Issue Published on the Occasion of 10th Anniversary of Chem.Asian J.) Full Text: LINK (Open Access)

    img3

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  • Near-IR Squaraine Dye-Loaded Gated Periodic Mesoporous Organosilica for Photo-Oxidation of Phenol in a Continuous-Flow Device
    P. Borah, S. Sreejith, P. Anees, N. V. Menon, Y. Kang, A. Ajayaghosh*, Y. Zhao*
    Science Advances 2015, 1, e1500390. Full Text: LINK (Open Access)

    img4

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  • Living Supramolecular Polymerization
    R. D. Mukhopadhyay, A. Ajayaghosh*
    Science 2015, 349, 241–242 (Perspective). Full Text: LINK

    img5

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  • Fluorescence Imaging Assisted Photodynamic Therapy Using Photosensitizer-Linked Gold Quantum Clusters
    L. V. Nair, S. S. Nazeer, R. S. Jayasree*, A. Ajayaghosh*
    ACS Nano 2015, 9, 5825–5832. Full Text: LINK

    img6

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  • Water as a Self-Erasable Security Marker on a Slippery Fluorescent Molecular Assembly
    R. Thirumalai, R. D. Mukhopadhyay, V. K. Praveen, A. Ajayaghosh*
    Scientific Reports 2015, 5, 9842. Full Text: LINK (Open Access)

    img7

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  • Organic Donor-Acceptor Assemblies to Coaxial p–n Heterojunctions with High Photoconductivity
    S. Prasanthkumar, S. Ghosh, V. C. Nair, A. Saeki, S. Seki, A. Ajayaghosh*
    Angew. Chem. Int. Ed. 2015, 54, 946–950.
    Full Text: LINK

    img1

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  • Detection of Nitroaromatic Explosives with Fluorescent Molecular Assemblies and pi-Gels
    K. K. Kartha, A. Sandeep, V. K. Praveen, A. Ajayaghosh*
    Chem. Rec. 2015, 15, 252-265.
    Full Text: LINK (Open Access)

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 2014[to top]

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  • Self-Assembled Near-Infrared Dye Nanoparticles as a Selective Protein Sensor by Activation of a Dormant Fluorophore
    P. Anees, S. Sreejith, A. Ajayaghosh*J. Am. Chem. Soc. 2014, 136, 13233–13239.
    Full Text: LINK
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  • Photoresponsive Metal-Organic Materials: Exploiting the Azobenzene Switch.
    R. D. Mukhopadhyay, V. K. Praveen, A. Ajayaghosh*Mater. Horiz. 2014, 1, 572–576 (Minireview).
    Full Text: LINK
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  • A Carbazole–Fluorene Molecular Hybrid for Quantitative Detection of TNT Using a Combined Fluorescence and Quartz Crystal Microbalance Method.
    K. K. Kartha, A. Sandeep, V. C. Nair, M. Takeuchi*, A. Ajayaghosh*Phys. Chem. Chem. Phys. 2014, 16, 18896–18901.
    Full Text: LINK
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  • Electrochemically Synthesized Partially Reduced Graphene Oxide Modified Glassy Carbon Electrode for Individual and Simultaneous Voltammetric Determination of Ascorbic Acid, Dopamine and Uric Acid
    P. K. Aneesh, S. R. Nambiar, T. P. Rao*, A. AjayaghoshAnal. Methods 2014, 6, 5322–5330.
    Full Text: LINK
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  • A Ratiometric Fluorescent Molecular Probe with Enhanced Two-Photon Response upon Zn2+ Binding for in vitro and in vivo Bioimaging.
    K. P. Divya, S. Sreejith, A. Pichandi, Y. Kang, Q. Peng, S. K. Maji, Y. Tong, H. Yu*, Y. Zhao*, P. Ramamurthy, A. Ajayaghosh*Chem. Sci. 2014, 5, 3469–3474. Full Text: LINK
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  • Cyclotriphosphazene Appended Porphyrins and Fulleropyrrolidine Complexes as Supramolecular Multiple Photosynthetic Reaction Centers: Steady and Excited States Photophysical Investigation.
    V. S. Nair, Y. Pareek, V. Karunakaran*, M. Ravikanth*, A. Ajayaghosh*Phys. Chem. Chem. Phys. 2014, 16, 10149–10156. (Part of PCCP’s 15th Anniversary Issue).
    Full Text: LINK
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  • A Fluorescent Molecular Probe for the Identification of Zinc and Cadmium Salts by Excited State Charge Transfer Modulation.
    K. P. Divya, S. Savithri, A. Ajayaghosh*Chem. Commun. 2014, 50, 6020–6022.
    Full Text: LINK
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  • Synthesis of a Gold Atomic Cluster–Chitosan Nanocomposite Film Modified Gold Electrode for Ultra-Trace Determination of Mercury.
    P. K. Aneesh, S. R. Nambiar, T. P. Rao*, A. Ajayaghosh*Phys. Chem. Chem. Phys. 2014, 16, 8529–8535.
    Full Text: LINK
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  • Aligned 1-D Nanorods of a Pi-Gelator Exhibit Molecular Orientation and Excitation Energy Transport Different from Entangled Fiber Networks.
    K. Sakakibara, P. Chithra, B. Das, T. Mori, M. Akada, J. Labuta, T. Tsuruoka*, S. Maji, S. Furumi, L. K. Shrestha, J. P. Hill, S. Acharya*, K. Ariga*, A. Ajayaghosh*J. Am. Chem. Soc. 2014, 136, 8548–8551.
    Full Text: LINK
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  • Effect of the Bulkiness of the End Functional Amide Groups on the Optical, Gelation, and Morphological Properties of Oligo(p-phenylenevinylene) Pi–Gelators.
    S. S. Babu, V. K. Praveen, K. K. Kartha, S. Mahesh, A. Ajayaghosh*Chem. –Asian J. 2014, 9, 1830–1840. (Highlighted by a “Cover Picture”).
    Full Text: LINK
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  • Oligo(phenylenevinylene) Hybrids and Self-Assemblies: Versatile Materials for Excitation Energy Transfer.
    V. K. Praveen*, C. Ranjith, E. Bandini, A. Ajayaghosh*, N. Armaroli*Chem. Soc. Rev. 2014, 43, 4222–4242. (Part of Themed Issue on Supramolecular Photochemistry Dedicated to Prof. N. J. Turro)
    Full Text: LINK
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  • Functional Pi-Gelators and Their Applications.
    S. S. Babu, V. K. Praveen, A. Ajayaghosh* Chem. Rev. 2014, 114, 1973–2129. (A Comprehensive Review on Chromophore Based Supramolecular Gelators).
    Full Text: LINK