Fritz Weigert (18 September 1876 – 13 April 1947) was a German physical

chemist A chemist (from Greek ''chēm(ía)'' alchemy; replacing ''chymist'' from Medieval Latin ''alchemist'') is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties. Chemists carefully describe ...

. Weigert has made major contributions in the field of

photochemistry Photochemistry is the branch of chemistry concerned with the chemical effects of light. Generally, this term is used to describe a chemical reaction caused by absorption of ultraviolet (wavelength from 100 to 400 nm), visible light (400– ...

. He was born in Berlin. He was the nephew of both Karl Weigert and

Paul Ehrlich Paul Ehrlich (; 14 March 1854 – 20 August 1915) was a Nobel Prize-winning German physician and scientist who worked in the fields of hematology, immunology, and antimicrobial chemotherapy. Among his foremost achievements were finding a cure ...

. He was married to Margarete Behmer. Around 1908, he began teaching and conducting research at

Berlin University The Humboldt University of Berlin (german: link=no, Humboldt-Universität zu Berlin, abbreviated HU Berlin) is a public research university in the central borough of Mitte in Berlin, Germany. The university was established by Frederick Willi ...

- after studying there. He was a photochemistry professor at

Leipzig University Leipzig University (german: Universität Leipzig), in Leipzig in Saxony, Germany, is one of the world's oldest universities and the second-oldest university (by consecutive years of existence) in Germany. The university was founded on 2 Decemb ...

from 1914 until being, like other Jewish scientists, forced out by the Nazis in 1934. On January 1, 1935, he immigrated to England and in 1936 was director of the Physiochemical Department of the Cancer Research Institute at Mount Vernon Hospital, Northwood. He elucidated the metabolism of the carcinogenic hydrocarbon 3,4-benzpyrene by fluorescence spectroscopy.

Works

*(1901) About the sulfurized dibutolactone, ''Reports of the German Chemical Society'' *(1903), Ueber organische Synthesen mittels Kohlenoxysulfid. Ber. Dtsch. Chem. Ges., 36: 1007-1013. doi:10.1002/cber.19030360120

*(1905) About reversible photochemical reactions in the homogeneous system *(1908) About Chemical Light Effects *(1911), Die chemischen Wirkungen des Lichts (The Chemical Effects of Light) *(1913) About the activation of oxygen by radiation, ''Reports of the German Chemical Society'' *(1919), A new effect of radiation in photosensitive layers *(1916), Über Absorptionsspektren und über eine einfache Methode zu ihrer quantitativen Bestimmung. Ber. Dtsch. Chem. Ges., 49: 1496-1532. doi:10.1002/cber.19160490117

*(1917) About real photochemical processes. Zeitschrift für Physikalische Chemie, Volume 130U, Issue 1, Pages 607–615, ISSN (Online) 2196-7156, ISSN (Print) 0942-9352, doi: 10.1515/zpch-1927-13065. *(1920), Über die spezifische Wirkung der polarisierten Strahlung. Ann. Phys., 368: 681-725. doi:10.1002/andp.1920368240

*(1921) Weigert, F. Pflügers Arch. 190: 177. https://doi.org/10.1007/BF0172338

*(1921) Weigert, F. Z. Physik. Über einen neuen Effekt der Strahlung 5: 410. https://doi.org/10.1007/BF0132767

*(1923) On the photochemistry of chlorine. ''Journal of Physical Chemistry'' *(1924) About the polarization state of the resonance radiation and about its influence by weak magnetic fields. Polarisierte Fluoreszenz in Farbstofflösungen Zeitschrift für Physik, Volume 25, Number 1, Page 99-11

*(1927) Optische Methoden der Chemie (Optical Methods of Chemistry) *(1927) About the mechanism of photochemical polymerization of anthracene. ''Natural Sciences'' *(1929) Photochemical to the theory of color vision. ''Zeitschrift für Physikalische Chemie'', Volume 3B, Issue 1, Pages 377–388, ISSN (Online) 2196-7156, ISSN (Print) 0942-9352, doi: /10.1515/zpch-1929-0328. *(1929) About monochromatic light filters. *(1930) Color-ability, a new property of the latent photographic image. ''Natural Sciences'' *(1933) The Colloid Chemistry of Photoanisotrophy *(1940) Photochemical Studies on Color Vision *Berenblum and Halban, in: Nature, no. 159 (1947), 733.

References

Jewish Virtual Library: Fritz Weigert

External links

University of Leipzig
*Obituary in Naturevolume 159, page733 (1947
Mapping the Lives
{{DEFAULTSORT:Weigert, Fritz 1876 births 1947 deaths 20th-century German chemists German physical chemists Photochemists Jewish emigrants from Nazi Germany to the United Kingdom Scientists from Berlin