17951-64-3

Upstream product

• 2767-70-6 (p-nitrobenzyl)triphenylphosphonium bromide 
• 120-21-8 4-Diethylaminobenzaldehyde 
• 100-11-8 1-bromomethyl-4-nitro-benzene 
• 104-03-0 4-nitrobenzeneacetic acid 

Downstream Products

• 1253645-30-5 2-((4-(2-(4-diethylaminophenyl)vinyl)phenylimino)methyl)phenol 
• 1203558-91-1 4-[(4'-N,N-diethylaminostilbene-4-ylimino)methyl]phenol 
• 1202867-54-6 4-(4-N,N-diethylcinnamenyl)aminylbenzene 

Relevant academic research and scientific papers

Evidence for two-photon absorption-induced ESIPT of chromophores containing hydroxyl and imino groups

This paper presents experimental and theoretical investigations into excited-state intramolecular proton transfer (ESIPT) in new chromophores with hydroxyl and imino groups under one- and two-photon excitation. The results show that internal hydrogen bond

New organic conjugated dye nano-aggregates exhibiting naked-eye fluorescence color switching

In this study, a variety of new conjugated containing strong electron-donating groups were prepared for formation of organic nano-scale aggregates. The properties and aggregation modes of these aggregates were investigated on basis of time dependent absorption, fluorescence emission spectra as well as scanning electron microscope images. The results show that nano organic aggregates could be yielded by the linear dyes in mixed DMF/H2O solvent through a simple re-precipitation method, while no aggregates of the branched dyes were produced. X-ray diffraction of single crystal and X-ray diffraction patterns of the powders results demonstrate that the linear dyes tend to show ordered molecular arrangements, while the armed dyes do not exhibit such a tendency. A remarkable fluorescence switching process under 365 nm lamp was observed for the target aggregates. This study successfully provides real examples of organic aggregates in mixed DMF/H2O solvent which have great capacity to show enhanced fluorescence color switching.

Synthesis and two-photon absorption properties of multi-branched styryl derivatives containing π-bond and σ-electron pair as bridge based on 1,3,5-triazine

A series of new one, two, and three-branched two-photon absorption triazine derivatives with a π-bond and a σ-electron pair as a bridge have been synthesized and their photophysical properties have been systematically investigated. These chromophores showed obvious solvatochromic effects, i.e., significant bathochromic shifting of the emission spectra and larger Stokes shifts were observed in more polar solvents mainly due to intra-molecular charge transfer (ICT). The two-photon absorption (2PA) cross-section values were determined by the two-photon excited fluorescence (TPEF) measurements in DMF. This result further proved that a σ-electron pair as a bridge is an efficient way to transfer charge as well as a π bridge, and that their 2PA cross-section values (δ) increase with increasing branch number.