Synthesis and structure of indoline spiropyrans based on benzo[f]coumarin
作者:O. G. Nikolaeva、O. Yu. Karlutova、A. A. Guseva、E. B. Gaeva、A. G. Starikov、A. D. Dubonosov、V. A. Bren、A. V. Metelitsa、V. I. Minkin
DOI:10.1007/s11172-020-2912-6
日期:2020.7
Indoline spiropyrans containing benzo[f]coumarin moiety annulated to the 2H-pyran cycle were synthesized. The obtained compounds exist in solutions as a tautomeric mixture of their spirocyclic and merocyanine forms. The spiro form exhibits an enhanced resistance to UV irradiation and does not rearranges into the merocyanine isomer in the temperature range of 278–303 K.
合成了含有与 2H-吡喃循环成环的苯并[f]香豆素部分的二氢吲哚螺吡喃。所得化合物以其螺环和部花青形式的互变异构混合物存在于溶液中。螺形式对紫外线照射具有增强的抵抗力,并且在 278-303 K 的温度范围内不会重新排列成部花青异构体。
Synthesis and studies of new photochromic spiropyrans containing a formylcoumarin fragment
作者:O. G. Nikolaeva、A. V. Metelitsa、A. S. Cheprasov、O. Yu. Karlutova、A. G. Starikov、A. D. Dubonosov、V. A. Bren´、V. I. Minkin
DOI:10.1007/s11172-016-1396-x
日期:2016.4
A computer search for new photoactive compounds among indoline spiropyrans of coumarin series was carried out using DFT B3LYP/6-31G(d,p) method. Based on the data obtained, the spiropyrans containing a formylcoumarin fragment annulated to the 2H-pyran ring and possessing photochromic properties were synthesized. The structure and photochromism of these compounds were studied by 1H NMR, IR, and UV/Vis
Novel photochromic indolinospiropyrans of coumarin series with high level of colorability
作者:Anatoly V. Metelitsa、Olga G. Nikolaeva、Alexander S. Cheprasov、Olga Yu. Karlutova、Anastasia A. Burtseva、Alexander D. Dubonosov、Vladimir A. Bren、Vladimir I. Minkin
DOI:10.1016/j.jphotochem.2016.01.019
日期:2016.5
Indolinospiropyrans containing coumarin moiety annulated to the 2H-pyran ring at the 6,5-position exhibit positive photochromism under normal conditions and are characterized by exceptionally high values of colorability. Both strong electron donating and electron withdrawing 5-R substituents in the indoline moiety provide for the noticeable decrease of colorability. Negative solvatochromism of merocyanine
Molecular design and synthesis of methoxy-substitued spiropyrans with photomodulated NIR-fluorescence
作者:Artem D. Pugachev、Anastasia S. Kozlenko、Nadezhda I. Makarova、Irina A. Rostovtseva、Ilya V. Ozhogin、Vitaly S. Dmitriev、Gennady S. Borodkin、Valery V. Tkachev、Andrey N. Utenyshev、Marina A. Sazykina、Ivan S. Sazykin、Tatiana N. Azhogina、Shorena K. Karchava、Maria V. Klimova、Anatoly V. Metelitsa、Boris S. Lukyanov
DOI:10.1007/s43630-023-00479-1
日期:2023.11
design and synthesis of salt spiropyrans with near-IR fluorescence. The structure of the obtained compounds was confirmed by NMR, IR and mass spectroscopy. In the course of studying the spectral and photoluminescent characteristics, it was possible to reveal the effect of some substituents in various positions on the properties of spiropyran dyes. Due to the structural similarity of one of the isomers
本研究重点关注具有近红外荧光的盐螺吡喃的分子设计和合成。所得化合物的结构通过NMR、IR和质谱证实。在研究光谱和光致发光特性的过程中,可以揭示不同位置的某些取代基对螺吡喃染料性能的影响。由于其中一种异构体与花青染料的结构相似,所获得的化合物作为生物成像的潜在荧光探针,特别是用于 DNA 研究,引起了人们的兴趣。为了揭示它们与 DNA 分子结合的能力,进行了分子对接。研究人员在生物膜上以及使用细菌勒克斯生物传感器研究了显示近红外荧光的化合物的毒性作用。 图形概要