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SPS organises a seminar by Debdas Ray

SPS organises a seminar by Debdas Ray

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SPS organises a seminar by Debdas Ray
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School of Physical Sciences
Jawaharlal Nehru University


Challenges of Organic Dual-State Light Emitters: Novel Thermal
Enhancement Mechanism and Data Security Protection


Debdas Ray
Department of Chemistry, Shiv Nadar University


Day and Date: Wednesday, 12th September, 2018
Time: 4:00 P.M.
Venue: Seminar Room, First Floor, SPS, JNU


Abstract: The emergence of single-component organic dual-state emitters holds great promise for white organic lightemitting diodes (WOLEDs), sensing and biological detection due to the involvement of both singlet and long-lived triplet states. However, dual-state light- emitting materials with: a) thermally activated delayed fluorescence (TADF) and roomtemperature phosphorescence (RTP), and b) biluminescence via fluorescence and persistent RTP features are currently limited. In addition, thermally enhanced photoluminescence, particularly phosphorescence property of such light emitters remains a challenge in photophysics due to predominant non-radiative pathways that quench emission at elevated temperatures. In this presentation, we will focus on our recent reports of dual-state emission of organic donor-acceptor conjugates. We will also address the thermal enhancement mechanism of light-emission above RT and how data security
protection application can be achieved by utilizing persistent RTP.


References:
1. J. Phys. Chem. Letters. 2018, 9, 2733-2738.
(ACS Livesilde: https://pubs.acs.org/doi/suppl/10.1021/acs.jpclett.8b00937)
2. J. Phys. Chem. Letters. 2018, 9, 3808-3813.
(ACS Liveslide: https://pubs.acs.org/doi/suppl/10.1021/acs.jpclett.8b01551)

A warm welcome to the modified and updated website of the Centre for East Asian Studies. The East Asian region has been at the forefront of several path-breaking changes since 1970s beginning with the redefining the development architecture with its State-led development model besides emerging as a major region in the global politics and a key hub of the sophisticated technologies. The Centre is one of the thirteen Centres of the School of International Studies, Jawaharlal Nehru University, New Delhi that provides a holistic understanding of the region.

Initially, established as a Centre for Chinese and Japanese Studies, it subsequently grew to include Korean Studies as well. At present there are eight faculty members in the Centre. Several distinguished faculty who have now retired include the late Prof. Gargi Dutt, Prof. P.A.N. Murthy, Prof. G.P. Deshpande, Dr. Nranarayan Das, Prof. R.R. Krishnan and Prof. K.V. Kesavan. Besides, Dr. Madhu Bhalla served at the Centre in Chinese Studies Programme during 1994-2006. In addition, Ms. Kamlesh Jain and Dr. M. M. Kunju served the Centre as the Documentation Officers in Chinese and Japanese Studies respectively.

The academic curriculum covers both modern and contemporary facets of East Asia as each scholar specializes in an area of his/her interest in the region. The integrated course involves two semesters of classes at the M. Phil programme and a dissertation for the M. Phil and a thesis for Ph. D programme respectively. The central objective is to impart an interdisciplinary knowledge and understanding of history, foreign policy, government and politics, society and culture and political economy of the respective areas. Students can explore new and emerging themes such as East Asian regionalism, the evolving East Asian Community, the rise of China, resurgence of Japan and the prospects for reunification of the Korean peninsula. Additionally, the Centre lays great emphasis on the building of language skills. The background of scholars includes mostly from the social science disciplines; History, Political Science, Economics, Sociology, International Relations and language.

Several students of the centre have been recipients of prestigious research fellowships awarded by Japan Foundation, Mombusho (Ministry of Education, Government of Japan), Saburo Okita Memorial Fellowship, Nippon Foundation, Korea Foundation, Nehru Memorial Fellowship, and Fellowship from the Chinese and Taiwanese Governments. Besides, students from Japan receive fellowship from the Indian Council of Cultural Relations.