Dear All,
SOLID STATE & STRUCTURAL CHEMISTRY UNIT
INDIAN INSTITUTE OF SCIENCE
BENGALURU – 560012
Special Seminar
Name: Prof. Reshef Tenne
Affiliation: Department of Molecular Science Chemistry and Materials Science, Weizmann Institute, Rehovot, Israel
Title: Inorganic nanotubes: From WS2 to “misfit” compounds and recent advances
Date & Time: Thursday, 04th December 2025 at 04:00 p.m.
Venue: Rajarshi Bhattacharyya Memorial Lecture Hall, Chemical Sciences Building
Abstract:
Update on the synthesis and characterization of new inorganic nanotubes from 2D compounds, like W(S,Se)21 and core-shell WS2@WTe2 will be given. The strong coupling between optical cavity modes confined in the nanotube and the exitonic transitions have been studied in some detail.1,2 A neuromorphic computer with a size of a fruit-fly brain (108 synapses) able to process multitude of functionalities based on a web of ultra-long WS2 nanotubes was recently demonstrated.3 Recent progress in mechanical reinforcement of different polymers, will be briefly discussed.
Different nanotubes from quaternary “misfit” layered compounds (MLC) have been realized in recent years. In one recent case, highly anisotropic nanotubes, like RES-TaSe2 and RE-(TaSe2)2 (with RE=La, Sm) with extremely large (local) dipole moment was shown.4 The high-temperature stability of such MLC nanotubes were studied with the help of synchrotron-based X-ray absorption and scattering techniques.5 Such nanotubes offer unique behavior, like 1D superconductivity, etc., suitable for various quantum technologies.
References:
1. M.B. Sreedhara et al., J. Am. Chem. Soc. 144, 23, 10530–10542 (2022).
2. S.S. Sinha et al., Small 2020, 16, 1904390 (2020).
3. X. Han, Nature Comm., in press.
4. M.B. Sreedhara et al., PNAS 118, 35 e2109945118 (2021).
5. A. Khadiev, M.B. Sreedhara, et al., Acc. Chem. Res. 57, 3243-3253 (2024).