77515-65-2Relevant academic research and scientific papers
Mid-infrared recognition of the reversible photoswitching of fulgides
Seibold,Port
, p. 135 - 140 (1996)
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.
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 (2007/10/02)
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.
