66750-07-0

Upstream product

• 120-07-0 2,2'-(phenylimino)bis[ethanol] 
• 66750-10-5 13-phenyl-1,4,7,10-tetraoxa-13-aza-cyclopentadecane 

Downstream Products

• 73171-39-8 4-<4-(4,7,10,13-Tetraoxa-1-azacyclopentadecyl)phenylimino>-2,5-cyclohexadien-1-on 
• 73171-40-1 4-<4-(4,7,10,13-Tetraoxa-1-azacyclopentadecyl)phenylimino>-1(4H)-naphthalinon 
• 73171-31-0 1,7-Bis<4-(4,7,10,13-tetraoxa-1-azacyclopentadecyl)phenyl>-1,7-diaza-1,3,5-heptatrienyliumchlorid 
• 77102-00-2 4-<4-(Dimethylamino)phenylimino>-2-<(4,7,10,13-tetraoxa-1-azacyclopentadecyl)methyl>cyclohexa-2,5-dien-1-on 
• 77102-03-5 2-<(4,7,10,13-Tetraoxa-1-azacyclopentadecyl)methyl>phenol 
• 66943-05-3 1,4,7,10-tetraoxa-15-azacyclopentadecane 
• 73171-30-9 Bis<4-(4,7,10,13-tetraoxa-1-azacyclopentadecyl)phenyl>diazen 
• 66769-99-1 Bis<4-(4,7,10,13-tetraoxa-1-azacyclopentadecyl)phenyl>diazen-N-oxid 
• 66750-05-8 N-(4-aminophenyl)-1,4,7,10-tetraoxa-13-azacyclopentadecane 

Relevant academic research and scientific papers

Control of the Near Infrared Photoluminescence of Locally Functionalized Single-Walled Carbon Nanotubes via Doping by Azacrown-Ether Modification

Doped semiconducting single-walled carbon nanotubes (SWNTs) through local chemical functionalization (lf-SWNTs) show fascinating photoluminescence (PL) that appears with a longer wavelength and enhanced quantum yield compared to the original PL of non-modified SWNTs. In this study, we introduce an azacrown ether moiety at the doped sites of lf-SWNTs (CR-lf-SWNTs), and observe selective PL wavelength shifts depending on different interaction modes of silver ion inclusion and protonation of the amino group in the ring. Interestingly, their different values of the wavelength shifts show a clear correlation with calculated electron density of the nitrogen atom in the azacrown moiety in case of the inclusion form and the protonated form. This newly-observed responsiveness based on molecular interactions is expected to create doped sites that can versatilely control the PL functions based on molecular systems.

Ligand Structure and Complexation, L. Ion-selective Crown Ether Dyes

New dyes with an ion-selective crown ether system, the complexation of which with cations influences the ground and excited states of the chromophore to a different extent, have been synthesized.Different types of alkali/alkaline earth metal ions cause different colour changes, significant effects being normally observed with cations fitting selectively into the crown ether units with cromophores of azo dyes (1-3, 8a, b, 22, 24), naphthol blue (10), phenol blue (11), stilbene dyes (14a, b), (mero)cyanines (16, 17a, b), and of Koenig's salt (19, 20).Chromophores bound to open chain oligoethylene glycol ethers are also described.The remarkable changes of light absorption in the course of complexation of some of the dyes are discussed in terms of donor participation of the auxochrome or antiauxochrome.