Benzoin ethyl ether

Immobilization of (3-D-glucosidase from almonds on photo-crosslinkable resin prepolymer (ENTP-4000) was carried out by the following procedure. One gram of ENTP-4000 was mixed with 10 mg of a photosensitizer, benzoin ethyl ether, and 110 mg of (3-D-glucosidase from almonds (3.4 units mg ). The mixture was layered on a sheet of transparent polyester film (thickness, ca. 0.5 mm). The layer was covered with transparent thin film and then illuminated with chemical lamps (wavelength range 300 00 nm) for 3 min. The gel film thus obtained was cut into small pieces (0.5 x 5 x 5 mm) and used for bioconversion reaction. 

Figure 1. Absorbance spectra of benzoin ethyl ether before and after 30 minutes of illumination illustrating the absorbance decrease at wavelengths from 300 to 400 nm.

Figure 2. Absorbance decay of benzoin ethyl ether at 328 nm as a function of illumination time. The experiments were performed on 3.0 ml solutions of 0.1 wt. % BEE in 1-propanol.

When the source of initiation is altered from ionising radiation to UV, analogous additive effects to those previously discussed have been found. For reasonable rates of reaction, sensitisers such as benzoin ethyl ether (B) are required in these UV processes. Thus inclusion of mineral acid or lithium perchlorate in the monomer solution leads to enhancement in the photografting of styrene in methanol to polyethylene or cellulose (Table V). Lithium nitrate is almost as effective as lithium perchlorate as salt additive in these reactions (Table VI), hence the salt additive effect is independent of the anion in this instance. When TMPTA is included with mineral acid in the monomer solution, synergistic effects with the photografting of styrene in methanol to polyethylene are observed (Table VII) consistent with the analogous ionising radiation system. 

In presence of benzoin ethyl ether (BEE, 1%) and irradiated for 24 h at 24 cm from 90-W high pressure UV lamp. 

If one desires to optimize the yield of mercaptan, there needs to be a large excess of H2S used in the process. Acetophenone and its derivatives such as 2,2 -diethoxyacetophenone and benzoin ethyl ether, and organic phosphites are a few photoinitiators that... 

Photoinitiators (PI) benzophenone, HBP, 4-hydroxybenzophenone BEE, benzoin ethyl ether ITX, 2-isopropylthioxanthone DT, dithiocarbamate. 

Benzoin ethyl ether (1% w/v)sensitizer. Irradiated as in footnote b. 

Other conditions as in footnote a. Benzoin ethyl ether (1% v/v). 

Hilal et al. [25] studied the surface structure of molecularly imprinted poly(ether sulfone) membranes (called MIP membranes) by AFM and quantified the pore size and the surface roughness. They modified PES microfiltration membranes with a normal pore diameter of 0.22 j,m and a thickness of 150 (Am (Millipore). First, the membranes were coated with photoinitiator by soaking them in a 0.25 M solution of benzoin ethyl ether (BEE) in methanol and then immersing them in a mixture of 80 mM trimethyl propane trimethacrylate (TRIM), 40 mM 2-hydroxyethyl methacrylate (HEMA), and 2 mM adenosine 3 ,5 -cyclic monophosphate (cAMP) in an ethanol-water mixture (70 30 vol.%). Thereafter, the membranes were exposed to a B-100 lamp of relative radiation intensity 21.7 mW cm at 355 nm. Membranes with different modifications were obtained using various UV exposure times. The residual nongrafted polymer, monomer, initiator, and the template were extracted with methanol. After drying, the degree of modification (DM) was calculated from the... 

Benzoin n-butyl ether. See Benzoin butyl ether Benzoin ethyl ether... 

Nitro-o-toluidine 209-366-8 Benzoin ethyl ether 209-388-8 Benzalphthalide 209-400-1 2,6-Xylenol 209-402-2... 

Benzoin ethyl ether Phenethyl phenylacetate C16H16O3... 

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