In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Synthesis and nanoparticle encapsulation of 3,5-difuranylvinyl-boradiaza-s-indacenes for near-infrared fluorescence imaging, published in 2009-05-28, which mentions a compound: 2689-65-8, mainly applied to nanoparticle encapsulation furanylvinyl boradiazaindacene dye near IR fluorescence imaging; singlet oxygen generation furanylvinyl boradiazaindacene, Recommanded Product: 2689-65-8.
The mol. design, synthesis, and photophys. study of a series of near-IR absorbing and fluorescing dyes, 3,5-difuranylvinyl-boradiaza-s-indacenes, bearing various 5-membered heteroaromatic heads at the 8-position (FBs) are reported. The correlation between the mol. structure and the spectral shift has been studied by quantum chem. calculations at various levels (B3LYP/6-31G*, HF/6-31G* and HF/PM3), which conclude that the planarity determined by the bulkiness of the head unit controls the optical band gap of FBs, by energetically affecting the LUMO rather than the HOMO. It was also shown that incorporation of heavy atoms increased the capability of singlet oxygen generation as a result of enhanced intersystem crossing, which makes FBs potentially useful for near-IR photodynamic therapy. In vitro near-IR fluorescence imaging of live tumor cells has been demonstrated through a nanocarrier approach, by encapsulating one of the FB dyes in a stable aqueous formulation of organically modified silica nanoparticles which retains the fluorescence efficiency of the hydrophobic dye in water.
Here is just a brief introduction to this compound(2689-65-8)Recommanded Product: 2689-65-8, more information about the compound(5-Iodo-2-furaldehyde) is in the article, you can click the link below.
Reference:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem