Oxazine 1 perchlorate

Oxazine 1 perchlorate is a symmetric cationic dye (λex=653 nm, λem=666 nm).

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Dye Reagents

Oxazine 1 perchlorate (OX1) absorbs and emits light at about 653 and 666 nm in dilute aqueous solutions, respectively. It is soluble over a very wide range of polar solvents. The optical spectrum of Oxazine 1 perchlorate typically possesses an intense absorption band (λmax), which is neighbored by a shoulder at shorter wavelengths. Oxazine 1 perchlorate appears to exist almost in its monomeric form at concentrations below about 1×10-4 M in aqueous solutions. As it is expected, similar to polar ordinary liquid solvents, Oxazine 1 perchlorate shows only single fluorescence band in polar anisotropic media[1].

Oxazine 1 perchlorate doped liquid crystal samples are prepared from a pair of quartz sheets sandwiched exactly at known gap and sealed. The introduction of the dissolved Oxazine 1 perchlorate in nematic solvents is achieved by capillary action. Oxazine 1 perchlorate concentrations are chosen to be 1×10−5 M for all the liquid samples. Oxazine 1 perchlorate is studied in the nematic media up to a concentration of about 0.1%, w/w. The absorption spectra of Oxazine 1 perchlorate are recorded on a double beam spectrophotometer over a wavelength range 300 to 800 nm combined with a cell temperature controller[1].

[1]. Gilani AG, et al. Estimation of ground- and excited-state dipole moments of oxazine 1 in liquid and liquid crystalline media. Spectrochim Acta A Mol Biomol Spectrosc. 2011 Jun;79(1):148-55.

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