105357-94-6Relevant academic research and scientific papers
Fulgides as Efficient Photochromic Compounds. Role of the Substituent on Furylalkylidene Moiety of Furylfulgides in the Photoreaction
Yokoyama, Yasushi,Goto, Takakazu,Inoue, Tetsushi,Yokoyama, Masato,Kurita, Yukio
, p. 1049 - 1052 (1988)
Quantum yields of photoreactions of furylfulgides having Me, Et, n-Pr, or i-Pr on the furylalkylidene moiety were measured.The E-Z isomerization was greatly suppressed and the cyclization was accelerated when the alkyl group (R) became bulkier.When R was i-Pr, no E-Z isomerization was observed and the quantum yield of the colorizing cyclization was 0.62.
Mid-infrared recognition of the reversible photoswitching of fulgides
Seibold,Port
, p. 135 - 140 (2007/10/03)
IR absorption spectra of E-and C-isomers of several photochromic fulgide compounds were examined. As a characteristic feature, the spectra of all C-isomers show peaks that are completely missing in the spectra of the corresponding IE-isomers. Photoisomerization reactions of fulgides can, therefore, be monitored and their isomerization state can be detected by measuring the IR absorption at the characteristic wavenumbers. It is verified that mid-IR irradiation using tunable IR diode lasers does not induce any photoreaction. Thus, for the application of fulgides as optical recording media or photoswitches, narrowband mid-IR absorption measurement provides a method for entirely non-destructive readout.
Steric Effect of Alkylidene Groups of Furylfulgides on the Photochromic Behavior
Yokoyama, Yasushi,Iwai, Takeshi,Kera, Naohiko,Hitomi, Isamu,Kurita, Yukio
, p. 263 - 264 (2007/10/02)
Photoreactions of furylfulgides having a large alkylidene group (7-norbornylidene or 2-adamantylidene) were investigated.An adamantylidene fulgide with propylidene group recorded 0.51 and 0.26 for coloring and bleaching quantum yields, respectively.
