ICESAA-4

Fourth International Conference on Excited State Aromaticity and Antiaromaticity.
January 8-11, 2026, IISER Thiruvananthapuram, Kerala, India.

[Hariharan Group @GroupHariharan]

The ICESAA-4 Winter School lectures have now been uploaded to the official ICESAA-4 website.
Participants and interested researchers are welcome to access and revisit the sessions.

Please visit: https://t.co/aJEnvwCaBF

[Hariharan Group @GroupHariharan]

A wonderful gala dinner marked the close of ICESAA-4, offering time to unwind, reconnect, and continue conversations sparked during the conference. Thank you to everyone who made it special—see you at ICESAA-5 in Osaka.#ICESAA5

[Hariharan Group @GroupHariharan]

ICESAA-4 concluded with the announcement of ICESAA-5 by Prof. Shohei Saito, followed by thoughtful closing remarks from Prof. Henrik Ottosson and Prof. Mahesh Hariharan, reflecting on the scientific highlights and success of the conference.@OttossonGroup

[Hariharan Group @GroupHariharan]

ICESAA-4 celebrated excellence in scientific communication with the Best Poster Awards, honoring researchers for their impactful and well-presented poster contributions.@jibinsnarayan20 @Najuma_noushad @anjanavm4

[Hariharan Group @GroupHariharan]

Manoj Kumar Sharma, Neha Mourya, Shashi Gomi

[Hariharan Group @GroupHariharan]

ICESAA-4 concluded with an online lecture by Prof. Daniele Leonori on Novel Synthetic Methods Using Triplet Nitroarenes, where he showcased how triplet excited states can be harnessed to access unconventional and powerful synthetic transformations.

[Hariharan Group @GroupHariharan]

Prof. Irene Casademont Reig presented Aromaticity as a Design Variable at ICESAA-4, illustrating how aromaticity concepts can be deliberately employed to guide molecular design and tune electronic and photophysical properties.

[Hariharan Group @GroupHariharan]

Prof. Bo Durbeej delivered an talk on Simultaneous Optimization of Electrocyclization and Cycloreversion Reactions of Diarylethene Photoswitches, demonstrating how aromaticity considerations in ground and excited states can be strategically used to enhance photoswitch performance

[Hariharan Group @GroupHariharan]

Final session of ICESAA-4, chaired by Prof. Henrik Ottosson, opened with Prof. Tomáš Slanina discussing Photodynamics and Aromaticity of Azulene and Pseudoazulenes.@OttossonGroup @Slanina_Group

[Hariharan Group @GroupHariharan]

The final talk of Session 10 at ICESAA-4 was delivered by Prof. Gokulnath Sabapathi, focusing on Aromaticity vs. Antiaromaticity in Large Macrocyclic Structures and the emergence of stable antiaromatic systems.

[Hariharan Group @GroupHariharan]

Prof. Yusuke Yoneda presented Nonequilibrium Planarization Dynamics Triggered by the Onset of Excited-State Aromaticity Revealed by Time-Domain Vibrational Spectroscopy at ICESAA-4, showcasing ultrafast structural dynamics in excited states.@YusukeYonedaPhD

[Hariharan Group @GroupHariharan]

At ICESAA-4, Prof. Igor Rončević discussed Conjugated π-Systems and How to Describe Them, offering insights into frameworks for describing conjugated electronic structures.@igor_roncevic

[Hariharan Group @GroupHariharan]

Session 10 at ICESAA-4, chaired by @jd1278 , opened with an online talk by Prof. Jinquan Chen on Excited-State Chirality Revealed by Ultrafast Time-Resolved Chiral Spectroscopy.

[Hariharan Group @GroupHariharan]

The second talk of Session 9 at ICESAA-4 was delivered by Dr. Moumita Gangopadhyay on Fluorescent Nanoprobes for Volatile Organic Compound (VOC)-Guided Photodynamic Therapy (PDT), highlighting targeted therapeutic strategies.@anglu_28

[Hariharan Group @GroupHariharan]

ICESAA-4 proceeds with Session 9 under the chairmanship of Prof. Anna Guðmundsdóttir, opening with Prof. Ori Gidron’s lecture on Size and Curvature Dependent Excited-State Aromaticity.

[Hariharan Group @GroupHariharan]

On the final day of ICESAA-4, Prof. Shohei Saito presented Aromaticity for the Design of Dynamic Molecules and Materials, highlighting how aromaticity principles enable dynamic molecular and materials design.

[Hariharan Group @GroupHariharan]

Prof. Martin Peeks presented Unusual Properties of Aromatic and Antiaromatic Molecules at ICESAA-4, highlighting unconventional structure–property relationships in π-conjugated systems.

[Hariharan Group @GroupHariharan]

Day 4 of ICESAA-4 begins under the chairmanship of Prof. Mahesh Hariharan, opening with the first talk by Prof. Prasun Mandal on Meta-Fluorophores: An Uncharted Ocean.

[Hariharan Group @GroupHariharan]

The session and day at ICESAA-4 concluded with a talk by Dr. M. S. Charoo on Tribological and Chemical Characterisation of Epoxidised Peganum harmala L. Oil as a Sustainable Bio-Lubricant, highlighting renewable alternatives in lubrication science.#aromaticity #antiaromaticity