39604-97-2

Usage

Chemical Properties

Pale yellow liquid

InChI:InChI=1/C11H12O/c1-3-9-12-11-7-5-10(4-2)6-8-11/h2,5-8H,3,9H2,1H3

Upstream product

• 95306-91-5 3-(4-Propoxy-phenyl)-prop-2-yn-1-ol 
• 106-41-2 4-bromo-phenol 
• 540-38-5 p-Iodophenol 
• 7400-08-0 para-coumaric acid 
• 69033-81-4 4-propoxycinnamic acid 
• 95306-89-1 1-iodo-4-propyloxybenzene 
• 39969-56-7 1-bromo-4-propoxybenzene 
• 107-19-7 propargyl alcohol 
• 469859-73-2 1-propoxy-4-[2-(trimethylsilyl)ethynyl]benzene 

Downstream Products

• 469859-07-2 1-[4-(tert-butoxycarbonyloxy)phenyl]-2-(4-n-propyloxyphenyl)acetylene 
• 915946-83-7 C₂₉H₃₆N₄O₁₁ 
• 1186638-12-9 3-chloro-5-((4-propoxyphenyl)ethynyl)picolinonitrile 
• 69374-86-3 1,4-bis(4-propoxyphenyl)buta-1,3-diyne 
• 1186638-13-0 3-chloro-5-(4-propoxyphenethyl)picolinonitrile 
• 1186635-83-5 8-methyl-2-(4-propoxyphenethyl)benzo[f][1,7]naphthyridin-5-amine 
• 1260244-33-4 N,N-diethyl-2-((2-(4-propoxyphenyl)quinolin-4-yl)oxy)ethan-1-amine 

Relevant academic research and scientific papers

Preparation and properties of high birefringence phenylacetylene isothiocyanato-based blend liquid crystals

A series of compounds of with high birefringence containing alkoxy–phenylacetylene–isothiocyanato structure were synthesized and characterized. The chemical structures of these compounds were confirmed by FT-IR and 1H-NMR, and transition temperatures and birefringence were measured. One of these compounds with good liquid crystal property and high birefringence was mixed with host liquid crystal to form blend liquid crystal. The effects of the concentration of the compound on phase temperature range, birefringence, resistivity, dielectric anisotropy and photoelectric properties were discussed. The results showed that blend liquid crystal (with 7 wt% compound) exhibited excellent comprehensive performance.

Competition between π-π And C-H/π Interactions: A Comparison of the Structural and Electronic Properties of Alkoxy-Substituted 1,8-Bis((propyloxyphenyl)ethynyl)naphthalenes

The structural and electronic consequences of π-π and C-H/π interactions in two alkoxy-substituted 1,8-bis- ((propyloxyphenyl)ethynyl)naphthalenes are explored by using X-ray crystallography and electronic structure computations. The crystal structure of analogue 4, bearing an alkoxy side chain in the 4-position of each of the phenyl rings, adopts a π-stacked geometry, whereas analogue 8, bearing alkoxy groups at both the 2- and the 5-positions of each ring, has a geometry in which the rings are splayed away from a π-stacked arrangement. Symmetry-adapted perturbation theory analysis was performed on the two analogues to evaluate the interactions between the phenylethynyl arms in each molecule in terms of electrostatic, steric, polarization, and London dispersion components. The computations support the expectation that the π-stacked geometry of the alkoxyphenyl units in 4 is simply a consequence of maximizing π-π interactions. However, the splayed geometry of 8 results from a more subtle competition between different noncovalent interactions: this geometry provides a favorable anti-alignment of C-O bond dipoles, and two C-H/π interactions in which hydrogen atoms of the alkyl side chains interact favorably with the π electrons of the other phenyl ring. These favorable interactions overcome competing π-π interactions to give rise to a geometry in which the phenylethynyl substituents are in an offset, unstacked arrangement.

Synthesis of diphenyl-diacetylene-based nematic liquid crystals and their high birefringence properties

We synthesized two series of diphenyl-diacetylene (DPDA)-based materials with alkoxy and alkyl tails of length m (DPDA-OCm and DPDA-Cm, respectively), and measured their nematic-phase birefringence (Δn) as a function of wavelength and temperature. We found that Δn decreases with an increase in m, possibly by a dilution effect of the low-Δn alkyl tail. Further, of the two series, Δn was found to be relatively higher in the DPDA-OCm materials, with the highest value of 0.4 obtained for DPDA-OC1 at 550 nm at 10 °C below the isotropic-to-nematic transition temperature. Further, we observed the temperature dependence for Δn, which is proportional to the order parameter (s). From extrapolation to s = 1 (the perfect orientation state), it is speculated that the DPDA-O moiety has the potential to afford a very large Δn of 0.9. The Royal Society of Chemistry 2012.

High birefringence nematic liquid crystals for display and telecom applications

Several compounds with high birefringence and, having tolane structure were synthesized. For a high polarizability, isothiocyanato (NCS) terminal group was introduced. Another goal of this study was reduction of melting point and smectic phases by introduction of fluorine as lateral substituent. The transition temperatures for all the synthesized compounds and the refractive and dielectric indices for one of the compounds have been determined. Electro-optic (EO) measurements were also performed.

Optically active compound and photosensitive resin composition

A photoactive compound is used in combination with a photosensitizer, represented by the following formula (1): A?[(J)m?(X-Pro)]n ??(1) wherein A represents a hydrophobic unit comprising at least one kind of hydrophobic groups selected from a hydrocarbon group and a heterocyclic group, J represents a connecting group, X-Pro represents a hydrophilic group protected by a protective group Pro which is removable by light exposure, m represents 0 or 1, and n represents an integer of not less than 1. The protective group Pro may be removable by light exposure in association with the photosensitizer (especially, a photo acid generator), or may be a hydrophobic protective group. The hydrophilic group may be a hydroxyl group or a carboxyl group. The photoactive compound has high sensitivity to a light source of short wavelength beams, for resist application, therefore, the photoactive compound is advantageously used for forming a pattern with high resolution.