The reversible switching of a water-soluble spiropyran compound is recorded over 1 ns by means of femtosecond vis-pump/vis- and IR-probe spectroscopy under aqueous conditions. Our investigations reveal that the photochemical conversion from the closed spiropyran to the open merocyanine takes 1.6 ps whereas the reversed photoreaction is accomplished within 25 ps. The combination of time-resolved and steady-state observations allows us to reveal central parts of the reaction pathway leading to either form. The enhanced water solubility, its fast and efficient switching behavior, and its stability against hydrolysis over a time range of several weeks make this compound an attractive and versatile tool for biological applications.
SHACHKUS, A. A., NAUCH. TR. VUZOV LITSSR. XIMIYA I XIM. TEXNOL., 30,(1988) S. 79-83
作者:SHACHKUS, A. A.
DOI:——
日期:——
Synthesis of DNA with Spirobenzopyran as an Internal Covalent Modification
作者:Hans-Achim Wagenknecht、Christoph Beyer
DOI:10.1055/s-0029-1219924
日期:2010.6
The photochromic spirobenzopyran was incorporated as an internal modification into oligonucleotides by two different synthetic strategies: For the first route the spiropyran phosphoramidite was synthesized as a DNA building block, whereas for the second route the postsynthetic ‘click’-type ligation was applied. Photoinduced ring opening of the chromophore could not be achieved in duplex DNA.
作者:Jörg Kohl-Landgraf、Markus Braun、Cem Özçoban、Diana P. N. Gonçalves、Alexander Heckel、Josef Wachtveitl
DOI:10.1021/ja304395k
日期:2012.8.29
The reversible switching of a water-soluble spiropyran compound is recorded over 1 ns by means of femtosecond vis-pump/vis- and IR-probe spectroscopy under aqueous conditions. Our investigations reveal that the photochemical conversion from the closed spiropyran to the open merocyanine takes 1.6 ps whereas the reversed photoreaction is accomplished within 25 ps. The combination of time-resolved and steady-state observations allows us to reveal central parts of the reaction pathway leading to either form. The enhanced water solubility, its fast and efficient switching behavior, and its stability against hydrolysis over a time range of several weeks make this compound an attractive and versatile tool for biological applications.