746-53-2Relevant articles and documents
Nitroaromatics as n-type organic semiconductors for field effect transistors
Ghamari, Pegah,Hamzehpoor, Ehsan,Niazi, Muhammad Rizwan,Perepichka, Dmitrii F.,Perepichka, Igor F.
supporting information, p. 6432 - 6435 (2020/06/21)
The nitro group (NO2) is one of the most common electron-withdrawing groups but it has rarely been used in the design of organic semiconductors (OSCs). Herein, we report the n-type semiconducting behavior of simple fluorenone derivatives functionalized with NO2and CN groups. While the electron mobilities measured in the thin film field-effect transistors are modest (10?6-10?4cm2V?1s?1), the nitrofluorenone OSCs offer excellent air-stability and remarkable tunability of energy levelsviafacile modification of the substitution pattern. We study the effect of substituents on the electrochemical properties, molecular and crystal structure, and the charge transport properties of nitrofluorenones to revitalize the underestimated potential of NO2functionalization in organic electronics.
Camptothecin derivatives as chemoradiosensitizing agents
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Page/Page column 34, (2008/06/13)
Camptothecin-based compounds are useful for treating a neoplasm in mammalian subjects by administering such compound to the subjects in combination with radiotherapy, i.e., the treatment of tumors with radioactive substances or radiation from a source external to the subject. Camptothecin-based compounds are modified by positioning at least one electron-affinic group around the camptothecin structure to enhance their value in combination with radiotherapy. New Camptothecin-based compounds are disclosed that are useful for treating cancer by administering the novel compounds alone or in combination with radiotherapy.
SYNTHESIS OF POLYNITRO-SUBSTITUTED 2-CARBOXYBIPHENYLS
Adrievskii, A. M.,Poplavskii, A. N.,Dyumaev, K. M.
, p. 1195 - 1198 (2007/10/02)
Methods were developed for the synthesis of polynitro-substituted 2-carboxybiphenyls.During the nitration of 2-carboxybiphenyl under rigorous conditions or during the heating of nitro-substituted 2-carboxybiphenyls in concentrated sulfuric acid or high-strength oleum decarboxylation and cyclization occur with the formation of nitro-substituted biphenyls and fluorenone.