A spiropyran photoswitch is activated using UV light and protons from a form that shows no interaction with DNA to a form that binds to DNA by intercalation. This scheme is interpreted as a biologically relevant logic AND gate with potential applications as a dually controlled anticancer drug.
Synthesis, Photochromic and Luminescent Properties of Ammonium Salts of Spiropyrans
作者:Artur A. Khuzin、Dim I. Galimov、Artur R. Tulyabaev、Liliya L. Khuzina
DOI:10.3390/molecules27238492
日期:——
New salts of photochromic indoline spiropyrans capable of reversibly responding to UV radiation were synthesized to develop light-controlled materials. Photoinduced reactions of the synthesized compounds were studied using absorption and luminescence spectroscopies, and the quantum yields of photoisomerization and other spectral and kinetic characteristics were measured. It was shown that the light
New Triphenylphosphonium Salts of Spiropyrans: Synthesis and Photochromic Properties
作者:Artur A. Khuzin、Dim I. Galimov、Liliya L. Khuzina、Adis A. Tukhbatullin
DOI:10.3390/molecules29020368
日期:——
targeted delivery of drugs, and one of the most promising classes of chemical compounds for creating drugs of this kind are the photochromic spiropyrans, capable of light-controlled biological activity. This work is devoted to the synthesis and study of the photochromic properties of new triphenylphosphonium salts of spiropyrans. It was found that all the synthesized cationic spiropyrans have high photosensitivity
New photochromes equipped with positively charged ammonium fragments
作者:Vladimir Lokshin、Sergey V. Paramonov、Olga A. Fedorova
DOI:10.1016/j.mencom.2015.09.018
日期:2015.9
Quaternization of N-heterocycle-fused chromenes with iodomethane and of triethylamine with 3-bromopropyl-substituted spironaphthoxazine affords new ammonium-equipped photochromes.
Photoswitched DNA-Binding of a Photochromic Spiropyran
The dramatically different DNA-binding properties of the two isomeric forms of a photochromic spiropyran have been demonstrated, enabling photoswitched DNA binding. The closed, UV-absorbing form shows no signs of interaction with DNA. Upon UV exposure the spiropyran is isomerized to the open form that binds to DNA by intercalation. The process is fully reversible as the corresponding dissociation process is induced by visible light.