Publications

23. M. R. Ajayakumar, J. Ma, A. Lucotti, K. S. Schellhammer, G. Serra, E. Dmitrieva, M. Rosenkranz, H. Komber, J. Liu, F. Ortmann, M. Tommasini, X. Feng, Persistent peri-heptacene: synthesis and in situ characterization, Angew. Chem. Int. Ed., 2021, 60, 13853–13858. Impact factor: 12.9. https://doi.org/10.1002/anie.202102757

22. Y. Horii, M. Damjanović, M. R. Ajayakumar, K. Katoh, Y. Kitagawa, L. Chibotaru, L. Ungur, M. Mas-Torrent, W. Wernsdorfer, B. K. Breedlove, M. Enders, J. Veciana and M. Yamashita, Highly oxidized states of phthalocyaninato terbium(III) multiple- decker complexes showing structural deformations, biradical properties and decreases in magnetic anisotropy, Chem. Eur. J., 2020, 26, 8621 –8630. Impact factor: 4.9. https://doi.org/10.1002/chem.202001365

21. M. R. Ajayakumar,§ C. Moreno,§ I. Alcón,§ F. Illas, C. Rovira, J. Veciana, S. T. Bromley, A. Mugarza and M. Mas-Torrent, Neutral organic radical formation by chemisorption on metal surfaces, J. Phys. Chem. Lett., 2020, 11, 3897-3904 (§ contributed equally). Impact factor: 6.7. https://doi.org/10.1021/acs.jpclett.0c00269

20. M. R. Ajayakumar,* Y. Fu, F. Liu, H. Komber, V. Tkachova, C. Xu, S. Zhou, A. A. Popov, J. Liu and X. Feng, Tailoring magnetic feature in zigzag-edged nanographenes via controlled Diels-Alder reactions, Chem. Eur. J., 2020, 26,7497 – 7503 (*corresponding author),  Impact factor: 4.9. https://doi.org/10.1002/chem.202001130

19. J. Shukla, M. R. Ajayakumar, and P. Mukhopadhyay, Buchwald-Hartwig coupling at the naphthalenediimide core: access to dendritic, panchromatic NIR absorbers with exceptionally low band gap, Org. Lett., 2018, 20, 7864-7868. Impact factor: 6.6. https://doi.org/10.1021/acs.orglett.8b03408

18.  D. Gutiérrez, S. Riera-Galindo, M. R. Ajayakumar, J. Veciana, C. Rovira, M. Mas-Torrent, N. Crivillers, Self-Assembly of an Organic Radical Thin Film and its Memory Function Investigated Using a Liquid Metal Electrode, J. Phy. Chem. C, 2018, 122, 17784–17791. Impact factor: 4.2. https://doi.org/10.1021/acs.jpcc.8b04170

17. M. R. Ajayakumar, Y. Fu, J. Ma, F. Hennersdorf , H. Komber, J. J. Weigand, A. Alfonsov, A. Popov, R. Berger, J. Liu, K. Müllen, X. Feng, Toward full zigzag-edged nanographenes: peri-tetracene and its corresponding circumanthracene, J. Am. Chem. Soc., 2018 , 140, 6240-6244. Impact factor: 14.6. https://doi.org/10.1021/jacs.8b03711 

16. A. Campos, § Q. Zhang, § M. R. Ajayakumar, § F. Leonardi and M. Mas-Torrent, High performance organic field-effect transistors with solid and aqueous dielectric based on a solution sheared sulfur-bridged annulene derivative, Adv. Electron. Mater., 2017, doi.org/10.1002/aelm.201700349 (§ contributed equally). Impact factor: 6.6. https://doi.org/10.1002/aelm.201700349

15. N. Castagnetti, A. Girlando, M. Masino, C. Rizzoli, M. R. Ajayakumar, M. Mas-Torrent and C. Rovira, Extensive study of the electron donor 1,1,4,4-tetrathiabutadiene (TTB) and of its charge transfer crystal with TCNQ, Synth. Met., 2018, 235, 29−33. Impact factor: 3.3. https://doi.org/10.1016/j.synthmet.2017.11.007

14. J. Shukla, M. R. Ajayakumar, Y. Kumar and P. Mukhopadhyay, Electron sponge from naphthalenediimide–viologen conjugates: water-stable, highly electron-deficient polyions with 1 V potential window, Chem. Commun., 2018, 54, 900−903. Impact factor: 6. https://doi.org/10.1039/c7cc09372a

13. S. K. Keshri, S. Dana, M. R. Ajayakumar, D. Asthana and P. Mukhopadhyay, Functional molecular and supramolecular materials for electron transfer reactions and their applications, Functional Supramolecular Materials: From Surfaces to MOFs, Royal Society of Chemistry, 2017, Chapter 4, p110−179 (Book Chapter). https://doi.org/10.1039/9781788010276-00110 

12. M. R. Ajayakumar, I. Alcón, S. T. Bromley, J. Veciana, C. Rovira and M. Mas-Torrent, Direct covalent grafting of an organic radical core on gold and silver, RSC Adv., 2017, 7, 20076−20083. Impact factor: 3.1. https://doi.org/10.1039/c7ra01686g

11. I. Temiño, F. G. D. Pozo, M. R. Ajayakumar, S. Galindo, J. Puigdollers and M. Mas-Torrent, A rapid, low-cost, and scalable technique for printing state-of-the-art organic field-effect transistors, Adv. Mater. Technol., 2016, 1, 1600090. Impact factor: 5.4. https://doi.org/10.1002/admt.201600090

10. I. Alcón, M. Gonidec, M. R. Ajayakumar, M. Mas-Torrent and J. Veciana, A surface confined yttrium(III) bis-phthalocyaninato complex: a colourful switch controlled by electrons, Chem. Sci., 2016, 7, 4940−4944. Impact factor: 9.6. https://doi.org/10.1039/c6sc00443a

9. A. Thakur, Md. J. Alam, M. R. Ajayakumar, S. Ghaskadbi, M. Sharma and S. K. Goswami, Norepinephrine-induced apoptotic and hypertrophic responses in H9c2 cardiac myoblasts are characterized by different repertoire of reactive oxygen species generation, Redox Biology, 2015, 5, 243−252. Impact factor: 10. https://doi.org/10.1016/j.redox.2015.05.005 

8. D. Asthana, J. Shukla, S. Dana, V. Rani, M. R. Ajayakumar, K. Rawat, K. Mandal, P. Yadav, S. Ghosh and P. Mukhopadhyay, Assorted morphosynthesis: access to multi-faceted nano-architectures from a super-responsive dual π-functional amphiphilic construct, Chem. Commun., 2015, 51, 15237–15240. Impact factor: 6. https://doi.org/10.1039/c5cc05198c

7. S. Kumar,§ M. R. Ajayakumar,§ G. Hundal and P. Mukhopadhyay, Extraordinary stability of naphthalenediimide radical ion and its ultra-electron-deficient precursor: strategic role of the phosphonium group, J. Am. Chem. Soc., 2014, 136, 12004−12010 (§ contributed equally). Impact factor: 14.6. https://doi.org/10.1021/ja504903j

6. M. R. Ajayakumar, K. Mandal, K. Rawat, D. Asthana, R. Pandey, A. Sharma, S. Yadav, S. Ghosh and P. Mukhopadhyay, Single electron transfer driven multi-dimensional signal read-out function of TCNQ as an ‘off-the-shelf’ detector for cyanide, ACS Appl. Mater. Interfaces, 2013, 5, 6996−7000 (Cover Article). Impact factor: 8.8. https://doi.org/10.1021/am4011176 

5. M. R. Ajayakumar, G. Hundal and P. Mukhopadhyay, A tetrastable naphthalenediimide: anion induced charge transfer, single and double electron transfer for combinational logic gates, Chem. Commun., 2013, 49, 7684−7686 (Cover Article). Impact factor: 6. https://doi.org/10.1039/c3cc43280g

4. D. Asthana, M. R. Ajayakumar, R. P. Pant and P. Mukhopadhyay, NTCDA–TTF first axial fusion: emergent panchromatic, NIR optical, multi-state redox and high optical contrast photooxidation, Chem. Commun., 2012, 48, 6475−6477 (Cover Article). Impact factor: 6 https://doi.org/10.1039/c2cc31274c

3. M. R. Ajayakumar, D. Asthana and P. Mukhopadhyay, Core-modified naphthalenediimides generate persistent radical anion and cation: new panchromatic NIR probes, Org. Lett., 2012, 14, 4822–4825. Impact factor: 6.6. https://doi.org/10.1021/ol302140x 

2. M. R. Ajayakumar, S. Yadav, S. Ghosh and P. Mukhopadhyay, Single-electron transfer driven cyanide sensing: a new multimodal approach, Org. Lett., 2010, 12, 2646–2649. Impact factor: 6.6. https://doi.org/10.1021/ol1008558

1. M. R. Ajayakumar and P. Mukhopadhyay, Naphthalene-bis-hydraziimide: radical anions and ICT as new bimodal probes for differential sensing of a library of amines, Chem. Commun., 2009, 3702–3704 (Cover Article). Impact factor: 6. https://doi.org/10.1039/b903097b 

(Updated on June 2021)