90134-08-0

Upstream product

• 100-43-6 4-vinylpyridine 
• 90134-06-8 (E)-{4-[2-(4-bromophenyl)vinyl]phenyl}dibutylamine 
• 2039-82-9 1-bromo-4-ethenyl-benzene 
• 90133-93-0 N,N-dibutyl-4-iodo-1-aniline 
• 589-15-1 1-bromomethyl-4-bromobenzene 
• 51044-13-4 4-bromobenzyl triphenylphosphonium bromide 
• 90134-10-4 4-(N,N-dibutylamino)benzaldehyde 
• 613-29-6 N-Dibutylaniline 

Downstream Products

• 97807-73-3 1-(3-sulfonatopropyl)-4-<β-vinyl>pyridinium betaine 

Relevant academic research and scientific papers

Synthesis, structure and properties of a new two-photon photopolymerization initiator

A new two-photon free-radical photopolymerization initiator, (E,E)-4-{2-[p′-(N,N-di-n-butylamino)stilben-p-yl]vinyl} pyridine (abbreviated to DBASVP), has been synthesized. Quantum chemistry calculations showed that the new initiator possesses a large delocalized π electron system, a large change in dipole moment on transition to the excited state anda large transition moment. The calculated two-photon absorption cross-section is as high as 881.34 × 10-50 cm4 s photon-1. The single-photon and two-photon absorption and fluorescence properties in various solvents have been investigated carefully. The new initiator exhibits outstanding solvent-sensitivity, which experimentally interprets the excellent electron delocalized properties of the molecule. A microstructure has been fabricated under irradiation at 800 nm using a 200 fs, 76 MHz Ti:sapphire femtosecond laser.

Charge-Shift Probes of Membrane Potential. Synthesis

We are reporting two general synthetic approaches to a number of (aminostyryl)pyridinium dyes and their heterocyclic analogues which are of interest as electrochromic probes for membrane potential.The two routes which involve palladium-catalyzed coupling or aldol condensation permit considerable structure variations to be introduced in the dyes.Some spectral properties of the dyes are discussed.