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	* [[Hartree–Fock method]]		* [[Hartree–Fock method]]
	* [[Bogoliubov transformation]]		* [[Bogoliubov transformation]]
	~~{{Portal\|India\|Chemistry}}~~

	== References ==		== References ==

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{{Use dmy dates|date=June 2018}}
{{Use Indian English|date=June 2018}}
{{Infobox scientist
| name = Sadhan Basu
| image =
| alt =
| caption =
| birth_date = {{Birth date|df=yes|1922|1|2}}
| birth_place = Calcutta, [[Bengal Presidency]], [[British Raj]]<br/><small>(now [[Kolkata]], [[West Bengal]], India)</small>
| death_date = {{Death date and age|df=yes|1992|10|5|1922|1|2}}
| death_place = [[Kolkata]], [[West Bengal]], India
| residence =
| nationality = [[Indian nationality|Indian]]
| fields = {{ublist | [[Polymer chemistry]] | [[Quantum chemistry]] }}
| workplaces = {{ublist | [[University of Calcutta]] }}
| alma_mater = {{ublist | [[Rajabazar Science College]] | [[University of Calcutta]] }}
| doctoral_advisor = Prafulla Kumar Bose
| doctoral_students = [[Mihir Chowdhury]]
| known_for = Studies on geometry of molecular complexes
| awards = {{ublist | 1965 [[Shanti Swarup Bhatnagar Prize]] | 1984 [[Indian Chemical Society|ICS]] Acharya JC Ghosh Gold Medal | 1988 C. V. Raman Birth Centenary Commemoration Medal }}
}}
'''Sadhan Basu''' [[Indian National Science Academy|FNA]], [[Indian Academy of Sciences|FASc]], [[Fellow of the Royal Society of Chemistry|FRSC]] (2 January 1922 – 5 October 1992) was an Indian physical chemist, academic and the Palit Professor of Chemistry at the [[University of Calcutta]] from 1964 to 1985.<ref name="Deceased fellow">{{Cite web |url=http://www.insaindia.res.in/detail/N62-0062 |title=Deceased fellow |date=2016 |publisher=Indian National Science Academy |access-date=5 November 2016}}</ref> He was known for his elucidation of the Quantum Mechanical Model of [[Robert S. Mulliken]]<ref name="Brief Profile of the Awardee">{{cite web | url=http://ssbprize.gov.in/Content/Detail.aspx?AID=297 | title=Brief Profile of the Awardee | publisher=Shanti Swarup Bhatnagar Prize | date=2016 | access-date=5 October 2016}}</ref> and his article, ''Degree of Polymerization and Chain Transfer in Methyl Methacrylate'', co-authored by Jyotirindra Nath Sen and Santi R. Palit was the first published Indian article on polymer chemistry.<ref name="President's Message">{{cite web | url=http://www.spsi.co.in/files/president-old.php | title=President's Message | publisher=Society for Polymer Science, India | date=2016 | access-date=7 November 2016}}</ref> He was an elected fellow of the [[Royal Society of Chemistry]], Chemical Society of France, [[Indian Chemical Society]], [[Indian National Science Academy]] and the [[Indian Academy of Sciences]].<ref name="Fellow profile">{{cite web | url=http://www.ias.ac.in/describe/fellow/Basu,_Prof._Sadhan | title=Fellow profile | publisher=Indian Academy of Sciences | date=2016 | access-date=5 November 2016}}</ref> The [[Council of Scientific and Industrial Research]], the apex agency of the Government of India for scientific research, awarded him the [[Shanti Swarup Bhatnagar Prize for Science and Technology]], one of the highest Indian science awards, in 1962, for his contributions to chemical sciences.<ref name="View Bhatnagar Awardees">{{cite web | url=http://ssbprize.gov.in/Content/AwardeeList.aspx | title=View Bhatnagar Awardees | publisher=Shanti Swarup Bhatnagar Prize | date=2016 | access-date=5 October 2016}}</ref>

== Biography ==
Basu was born on 2 January 1922<ref name="Fellow profile" /> in [[Kolkata]] (then Calcutta), to Jyotish Chandra Basu and Sarajubala.<ref name="Sadhan Basu — a physical chemist extraordinaire"/> Educated in the city, he graduated with a B.Sc. from the [[University of Calcutta]] in 1942, obtaining an M.Sc. from the same university in [[Rajabazar Science College]] campus in 1944.<ref name="Sadhan Basu — a physical chemist extraordinaire"/><ref name="Patrika_obit">{{cite web | url=http://www.ias.ac.in/public/Resources/Other_Publications/Patrika/patrika_27.pdf | title=Obituary - Sadhan Basu | publisher=Indian Academy of Sciences | date=January 1993 | access-date=25 December 2017}}</ref> He then conducted research into the properties of [[shellac]] at the Indian Lac Research Institute (now the [[Indian Institute of Natural Resins and Gums]]) under the supervision of noted chemist Prafulla Kumar Bose (1898-1983),<ref name="P_K_Bose">{{cite web | url=http://insaindia.res.in/BM/BM13_8817.pdf | title=Prafulla Kumar Bose (1898 - 1983) | publisher=Indian National Science Academy | date=1984 | access-date=25 December 2017}}</ref> for which he earned a D.Sc. from [[Rajabazar Science College]], [[Calcutta University]] in 1948.<ref name="Patrika_obit"/> In 1948, Basu joined the faculty of the [[Indian Association for the Cultivation of Science]], where he conducted pioneering research on [[chain transfer]] in [[radical polymerisation]] and established a standard procedure for estimating the molecular weight of polymers. From 1951 to 1953, he was a [[postdoctoral]] [[Fulbright fellow]] in chemistry at [[Indiana University Bloomington]], where he developed an interest in the emerging field of [[quantum chemistry]]; upon returning to India, he published six papers on free electron molecular orbital calculations.<ref name="Patrika_obit"/>

In 1954, Basu joined the faculty of the University of Calcutta as a [[Reader (academic rank)|reader]]; he would remain at the university for the next three decades.<ref name="Patrika_obit"/><ref name="History">{{cite web | url=http://www.caluniv.ac.in/academic/department/Chemistry.html | title=History | publisher=University of Calcutta | date=2016 | access-date=7 November 2016}}</ref> One of the pioneers of polymer chemistry in India, his studies were primarily in the fields of charge transfer interactions, ligand field spectra, [[hydrogen bonding]], [[quantum chemistry]] and [[photochemistry]]. Focusing on the detection, and analysis of [[charge transfer band]] of molecular complexes and through experimental assignment of its vibrational structure, he supported the quantum mechanical model of the complexes originally propounded by [[Robert S. Mulliken]], the winner of 1966 [[Nobel Prize for Chemistry]].<ref name="Handbook of Shanti Swarup Bhatnagar Prize Winners">{{cite web | url=http://www.csirhrdg.res.in/ssb.pdf | title=Handbook of Shanti Swarup Bhatnagar Prize Winners | publisher=Council of Scientific and Industrial Research | date=1999 | access-date=5 October 2016 | pages=34}}</ref> In order to determine the [[Amidogen|-NH2 group]] in [[nylon]], he developed a methodology which has since been accepted as a standard industrial procedure. He calculated the transition energies and oscillator strengths of aromatic polyhydrocarbons using the gas model prescribed by [[Shin'ichirō Tomonaga]] in 1950, demonstrated that extended catacondensed planar structures could be derived only by using 3-4-6 membered rings and employing Hartree-Fock-Bogolyubov, illustrated that, unlike triplet transitions, ''the longest wavelength singlet transitions in linear polyenes converge to a limit''.<ref name="Deceased fellow" /> Basu's researches were published in a number of articles and the article, ''Degree of Polymerization and Chain Transfer in Methyl Methacrylate'', he and his co-authors, J. N. Sen and S. R. Palit, published in 1950 was the first Indian article on polymer chemistry.<ref name="Degree of Polymerization and Chain Transfer in Methyl Methacrylate">{{cite journal | title=Degree of Polymerization and Chain Transfer in Methyl Methacrylate | author=Sadhan Basu, Jyotirindra Nath Sen, Santi R. Palit | journal=Proceedings of the Royal Society | volume=202 | issue=1071 | pages=485–498 | date=22 August 1950 | doi=10.1098/rspa.1950.0114| bibcode=1950RSPSA.202..485B | s2cid=98118634 }}</ref> He was associated with ''[[International Journal of Quantum Chemistry]]'', the ''Indian Journal of Chemistry'' and the ''Proceedings of the Proceedings of Indian National Science Academy'' as their associate editor and mentored a number of students in their doctoral researches.<ref name="“The Apple does not fall far from the tree”, and academic families (like teacher like student ?)">{{cite web | url=https://sciencetalk.wordpress.com/2016/07/05/the-apple-does-not-fall-far-from-the-tree-and-academic-families-like-teacher-like-student/ | title="The Apple does not fall far from the tree", and academic families (like teacher like student ?) | publisher=Science Talk | date=5 July 2016 | access-date=7 November 2016}}</ref><ref name="A man of action">{{cite web | url=http://www.biospectrumindia.com/biospecindia/news/159007/leading-indian-science-world-map | title=A man of action | publisher=BioSpectrum | date=5 December 2008 | access-date=7 November 2016}}</ref>

During 1961-62, Basu was a visiting professor at Indiana University Bloomington and was subsequently (1962–63) a visiting professor in the quantum chemistry group at the [[University of Uppsala]].<ref name="Sadhan Basu — a physical chemist extraordinaire"/> Following his return to India, Basu was appointed to the Palit Professorship of Chemistry at the [[Rajabazar Science College]] or University College of Science & Technology in 1964,<ref name="Chandra1994">{{cite book|author=A K Chandra|title=Introductory Quantum Chemistry|url=https://books.google.com/books?id=zocqImm7YAwC&pg=PR8|year=1994|publisher=Tata McGraw-Hill Education|isbn=978-0-07-462054-0|pages=8–}}</ref> the chair of which he held until his superannuation and retirement. He also served as head of the university's chemistry department from 1978 to 1980.<ref name="Patrika_obit"/> In 1981, he was appointed the director of the Indian Association for the Cultivation of Science, but relinquished the post in 1982 due to ill health.<ref name="IACS_admin_80">{{cite book|pages=2|title=Indian Association for the Cultivation of Science: Annual Report for 1980-81 |publisher=IACS|year=1981}}</ref><ref name="IACS_admin_82">{{cite book|pages=1–4|title=Indian Association for the Cultivation of Science: Annual Report for 1982-83 |year=1983}}</ref> He also served the Indian National Science Academy council during 1982-84 as a member.<ref name="Announcements 1">{{cite web | url=http://www.currentscience.ac.in/Downloads/article_id_050_20_0925_0926_0.pdf | title=Announcements 1 | publisher=Current Science | work=Volume 50 Issue 20 | date=October 1981 | access-date=7 November 2016}}</ref><ref name="Announcements 2">{{cite web | url=http://www.currentscience.ac.in/Downloads/article_id_052_21_1039_1040_0.pdf | title=Announcements 1 | publisher=Current Science | work=Volume 52 Issue 21 | date=November 1983 | access-date=7 November 2016}}</ref> Basu retired from the University of Calcutta in 1985,<ref name="Patrika_obit"/> and died on 5 October 1992, at the age of 70.<ref name="Brief Profile of the Awardee" /> He was survived by his wife, Rama Basu, who was also a theoretical chemist, and their son and daughter.<ref name="Sadhan Basu — a physical chemist extraordinaire"/><ref name="Patrika_obit"/> His scientific contributions have been documented in an article, ''Sadhan Basu — a physical chemist extraordinaire'', published in [[Resonance (journal)|Resonance journal]] in 2013.<ref name="Sadhan Basu — a physical chemist extraordinaire">{{cite journal | title=Sadhan Basu — a physical chemist extraordinaire | author=Ramprasad Misra and S. P. Bhattacharyya | journal=Resonance | date=July 2013 | volume=18 | issue=7 | pages=598–614 | doi=10.1007/s12045-013-0080-9| s2cid=122609160 }}</ref>

== Awards and honors ==
The Indian National Science Academy elected Basu as a fellow in 1962 and the [[Council of Scientific and Industrial Research]] awarded him the [[Shanti Swarup Bhatnagar Prize]], one of the highest Indian science awards, in 1965.<ref name="Chemical Sciences">{{cite web | url=http://www.csir.res.in/External/Heads/career/award/BPRIZE/CHEMICAL_SCIENCES.htm | title=Chemical Sciences | publisher=Council of Scientific and Industrial Research | date=2016 | access-date=7 November 2016 | url-status=dead | archive-url=https://web.archive.org/web/20120912012851/http://www.csir.res.in/external/heads/career/award/BPRIZE/CHEMICAL_SCIENCES.htm | archive-date=12 September 2012 }}</ref> A UGC National Professor during 1972–73, he became an elected fellow of the Indian Academy of Sciences in 1975<ref name="Fellow profile" /> and was a recipient of the Acharya J. C. Ghosh Gold Medal of Indian Chemical Society (1984) and the C. V. Raman Birth Centenary Commemoration Medal of the [[Indian Science Congress Association]] (1988).<ref name="Deceased fellow" /> In 1957, he was appointed a Fellow of the [[Royal Institute of Chemistry]] (FRIC), which merged with the Chemical Society in 1980 to become the [[Royal Society for Chemistry]].<ref name="Patrika_obit"/> He was also a fellow of the [[Indian Chemical Society]] and the Society of Physical Chemistry of France. The Indian Academy of Sciences issued a [[festschrift]], ''Dedicated to Prof. Sadhan Basu on the occasion of his sixtyfifth birthday'', on him in 1986 on his 65th birth anniversary<ref name="Dedicated to Prof. Sadhan Basu on the occasion of his sixtyfifth birthday">{{cite book | title=Dedicated to Prof. Sadhan Basu on the occasion of his sixtyfifth birthday | publisher=Indian Academy of Sciences | year=1986 | oclc=35479388}}</ref> and the contributors included Jack Simons, [[Debashis Mukherjee]], [[Werner Kutzelnigg]] and [[George G. Hall]] among others.<ref name="Special issue in dedication to Prof. Sadhan Basu on his 65th Birthday">{{cite web | url=http://www-old.ias.ac.in/j_archive/chemsci/96/vol96contents.html | title=Special issue in dedication to Prof. Sadhan Basu on his 65th Birthday | publisher=Indian Academy of Sciences | date=December 1986 | access-date=7 November 2016}}</ref> The Indian National Science Academy has instituted an annual oration, ''Professor Sadhan Basu Memorial Lecture'' in his honor<ref name="Professor Sadhan Basu Memorial Lecture">{{cite web | url=http://insaindia.res.in/aa3.php | title=Professor Sadhan Basu Memorial Lecture | publisher=Indian National Science Academy | date=2016 | access-date=7 November 2016}}</ref><ref name="Bidyendu Mohan Deb">{{cite web | url=http://www.iiserkol.ac.in/people/faculty/dcs/bidyendudeb | title=Bidyendu Mohan Deb | publisher=IISER Kokata | work=Scientist profile | date=2016 | access-date=7 November 2016}}</ref> and the University of Kolkata recognizes excellence in research in chemistry each year by an annual award, ''Professor Sadhan Basu Memorial Award''.<ref name="Professor Sadhan Basu Memorial Award">{{cite web | url=http://universe.bits-pilani.ac.in/goa/anjan/CV | title=Professor Sadhan Basu Memorial Award | publisher=BITS Pilani | work=faculty profile | access-date=7 November 2016}}</ref>

== See also ==
* [[Robert S. Mulliken]]
* [[Hartree–Fock method]]
* [[Bogoliubov transformation]]
{{Portal|India|Chemistry}}

== References ==
{{Reflist}}

== External links ==
* {{cite book|title=Dedicated to Prof. Sadhan Basu on the Occasion of His Sixtyfifth Birthday|url=https://books.google.com/books?id=0_OGuAAACAAJ|year=1986|publisher=Indian Academy of Sciences}}

== Further reading ==
* {{cite journal | title=Sadhan Basu — a physical chemist extraordinaire | author=Ramprasad Misra and S. P. Bhattacharyya | journal=Resonance | date=July 2013 | volume=18 | issue=7 | pages=598–614 | doi=10.1007/s12045-013-0080-9| s2cid=122609160 }}

{{SSBPST recipients in Chemical Science}}

{{Authority control}}

{{DEFAULTSORT:Basu, Sadhan}}
[[Category:Recipients of the Shanti Swarup Bhatnagar Award in Chemical Science]]
[[Category:1922 births]]
[[Category:1992 deaths]]
[[Category:20th-century Bengalis]]
[[Category:Indian scientific authors]]
[[Category:Fellows of the Indian Academy of Sciences]]
[[Category:University of Calcutta alumni]]
[[Category:University of Calcutta faculty]]
[[Category:20th-century Indian chemists]]
[[Category:Indian polymer scientists and engineers]]
[[Category:Indian physical chemists]]
[[Category:Fellows of the Royal Society of Chemistry]]
[[Category:Scientists from Kolkata]]

Sadhan Basu - Revision history

KurtisDelapena9: enhanced information to improve readability and updated info

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