Freiherr (; male, abbreviated as ), (; his wife, abbreviated as , ) and (, his unmarried daughters and maiden aunts) are designations used as titles of nobility in the German-speaking areas of the Holy Roman Empire, the Austro-Hungarian Empire and in ...

Christian Johann Dietrich Theodor von Grotthuss (20 January 1785 – 26 March 1822) was a

Baltic German Baltic Germans ( or , later ) are Germans, ethnic German inhabitants of the eastern shores of the Baltic Sea, in what today are Estonia and Latvia. Since Flight and expulsion of Germans (1944–1950), their resettlement in 1945 after the end ...

scientist known for establishing the first theory of

electrolysis In chemistry and manufacturing, electrolysis is a technique that uses Direct current, direct electric current (DC) to drive an otherwise non-spontaneous chemical reaction. Electrolysis is commercially important as a stage in the separation of c ...

in 1806 and formulating the first law 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 Nanometre, nm), visible ligh ...

in 1817. His theory of

is considered the first description of the so-called

Grotthuss mechanism The Grotthuss mechanism (also known as proton jumping) is a model for the process by which an 'excess' proton diffuses through the hydrogen bond network of water molecules or other hydrogen-bonded liquids through the formation and concomitant clea ...

Life and work

Grotthuss was born in 1785 in

Leipzig Leipzig (, ; ; Upper Saxon: ; ) is the most populous city in the States of Germany, German state of Saxony. The city has a population of 628,718 inhabitants as of 2023. It is the List of cities in Germany by population, eighth-largest city in Ge ...

Electorate of Saxony The Electorate of Saxony, also known as Electoral Saxony ( or ), was a territory of the Holy Roman Empire from 1356 to 1806 initially centred on Wittenberg that came to include areas around the cities of Dresden, Leipzig and Chemnitz. It was a ...

Holy Roman Empire The Holy Roman Empire, also known as the Holy Roman Empire of the German Nation after 1512, was a polity in Central and Western Europe, usually headed by the Holy Roman Emperor. It developed in the Early Middle Ages, and lasted for a millennium ...

, during an extended stay of his parents away from their home in northern

Grand Duchy of Lithuania The Grand Duchy of Lithuania was a sovereign state in northeastern Europe that existed from the 13th century, succeeding the Kingdom of Lithuania, to the late 18th century, when the territory was suppressed during the 1795 Partitions of Poland, ...

. He showed interest in natural sciences and went to study first in

and later in

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...

at the

École Polytechnique (, ; also known as Polytechnique or l'X ) is a ''grande école'' located in Palaiseau, France. It specializes in science and engineering and is a founding member of the Polytechnic Institute of Paris. The school was founded in 1794 by mat ...

. Several renowned scientists taught at the École Polytechnique at that time, including

Antoine François, comte de Fourcroy Antoine is a French given name (from the Latin ''Antonius'' meaning 'highly praise-worthy') that is a variant of Danton, Titouan, D'Anton and Antonin. The name is most common in France, Switzerland, Belgium, Canada, West Greenland, Haiti, Fren ...

Claude Louis Berthollet Claude Louis Berthollet (, 9 December 1748 – 6 November 1822) was a Savoyard-French chemist who became vice president of the French Senate in 1804. He is known for his scientific contributions to the theory of chemical equilibria via the ...

and

Louis Nicolas Vauquelin Louis Nicolas Vauquelin FRS(For) HFRSE (; 16 May 1763 – 14 November 1829) was a French pharmacist and chemist. He was the discoverer of chromium and beryllium. Early life Vauquelin was born at Saint-André-d'Hébertot in Normandy, France, th ...

. Because of some tensions in the relations between Russia and France, Grotthuss had to leave for

Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...

where he stayed at Naples for one year. The discovery of the first electric cell in 1800 by

Alessandro Volta Alessandro Giuseppe Antonio Anastasio Volta (, ; ; 18 February 1745 – 5 March 1827) was an Italian chemist and physicist who was a pioneer of electricity and Power (physics), power, and is credited as the inventor of the electric battery a ...

provided the scientists a source of electricity which was used in various laboratory experiments around Europe. The electrolysis of water, acids and salt solutions was reported, but a good explanation was missing. Grotthuss actively contributed to this area both in terms of electrolysis experiments and their interpretation. During his stay in Italy, he published his work on electrolysis in 1806. His idea that the charge is not transported by the movement of particles but by breaking and reformation of bonds was the first basically correct concept for the charge transport in

electrolyte An electrolyte is a substance that conducts electricity through the movement of ions, but not through the movement of electrons. This includes most soluble Salt (chemistry), salts, acids, and Base (chemistry), bases, dissolved in a polar solven ...

s; it is still valid for the charge transport in water, and the current proton hopping mechanism is a modified version of the original

. The following two years Grotthuss spent in

Rome Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...

, some other Italian cities, and Paris, and then went back to Russia via

Munich Munich is the capital and most populous city of Bavaria, Germany. As of 30 November 2024, its population was 1,604,384, making it the third-largest city in Germany after Berlin and Hamburg. Munich is the largest city in Germany that is no ...

and

Vienna Vienna ( ; ; ) is the capital city, capital, List of largest cities in Austria, most populous city, and one of Federal states of Austria, nine federal states of Austria. It is Austria's primate city, with just over two million inhabitants. ...

. From 1808 on he lived at the estate of his mother in northern Lithuania. There he conducted research on electricity and light with the limited research equipment he could assemble. Grotthuss committed

suicide Suicide is the act of intentionally causing one's own death. Risk factors for suicide include mental disorders, physical disorders, and substance abuse. Some suicides are impulsive acts driven by stress (such as from financial or ac ...

in the spring of 1822 during a depression caused by health problems.

Life and work

See also

References

Further reading