181711-89-7

Upstream product

• 62-53-3 aniline 
• 181711-88-6 4-{(E)-2-[4-((E)-2-{4-[(E)-2-(2,5-Dipropoxy-phenyl)-vinyl]-2,5-dipropoxy-phenyl}-vinyl)-2,5-dipropoxy-phenyl]-vinyl}-2,5-dipropoxy-benzaldehyde 
• 181711-87-5 [1-{4-[(E)-2-(2,5-Dipropoxy-phenyl)-vinyl]-2,5-dipropoxy-phenyl}-meth-(E)-ylidene]-phenyl-amine 
• 181711-84-2 (E)-4-(4-Methyl-2,5-dipropoxystyryl)-2,5-dipropoxybenzaldehyde 
• 181711-82-0 (E)-4-(2,5-Dipropoxystyryl)-2,5-dipropoxybenzaldehyde 
• 181711-83-1 (E)-1-(4-Bromo-2,5-dipropoxyphenyl)-2-(4-methyl-2,5-dipropoxyphenyl)ethene 
• 181711-81-9 (E)-4-Bromo-2,5,2',5'-tetrapropoxystilbene 
• 181711-80-8 diethyl 4-bromo-2,5-dipropoxybenzylphosphonate 
• 471258-12-5 1-bromo-4-(bromomethyl)-2,5-dipropoxybenzene 
• 157202-45-4 1,4-Dipropyloxy-2-methylbenzol 
• 123-31-9 hydroquinone 
• 3898-41-7 1,4-dipropoxybenzene 
• 4686-99-1 2,5-bispropyloxybenzaldehyde 
• 181711-85-3 (E)-4-(4-Methyl-2,5-dipropoxystyryl)-2,5-dipropoxybenzaldehyde dimethyl acetal 

Downstream Products

• 181711-90-0 4-((E)-2-{4-[(E)-2-(4-{(E)-2-[4-((E)-2-{4-[(E)-2-(2,5-Dipropoxy-phenyl)-vinyl]-2,5-dipropoxy-phenyl}-vinyl)-2,5-dipropoxy-phenyl]-vinyl}-2,5-dipropoxy-phenyl)-vinyl]-2,5-dipropoxy-phenyl}-vinyl)-2,5-dipropoxy-benzaldehyde 

Relevant academic research and scientific papers

Pentadecamer 2,5-dipropoxy-1,4-phenlenevinylene

The conjugated, all-(E)-configured pentadecamer 2,5-dipropoxy-1,4-phenylenevinylene 1j was prepared by a multistep synthesis on the basis of hydroquinone. The procedure consists of a general method for the repetitive extension of oligo(phenylenvinylene) chains by two styryl units (7a 10 12 14). The relatively rigid oligomer 1j represents a molecular wire of about 100 A. The absorption of 1j provides a proof for the convergence theory for electronic properties of conjugated oligomers with increasing number of repeat units. The corresponding conjugated polymer lp with the same substitution matches the values which were extrapolated from the oligomer series 1a-1j. Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002.

Monodisperse dialkoxy-substituted oligo(phenyleneethenylene)s

Individual but connected synthetic routes for the preparation of the all-E-configured 2,5-dipropoxy-substituted oligo(1,4-phenyleneethenylene)s 1a-g were developed. An increasing number of conjugated stilbene units from n = 1 to n = 11 led to a convergent bathochromic shift (Δλ = λz - λ1 = 127 nm) in the UV/Vis absorption. An exponential function for the convergence of the absorption energies (wavelengths) in conjugated systems is proposed. By a simple extrapolation of this function the effective chain length may be determined. VCH Verlagsgesellschaft mbH, 1996.