4889-63-8

Basic information

• Product Name: 5-bromo-6-nitro-1,2-dihydroacenaphthylene
• CAS NO: 4889-63-8
• Molecular Formula: C₁₂H₈BrNO₂
• Molecular Weight: 278.1014
• Mol File: 4889-63-8.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 417.4°C at 760 mmHg
• Flash Point: 206.3°C
• Density: 1.706g/cm³
• Vapor Pressure: 8.57E-07mmHg at 25°C
• Refractive Index: 1.742
• CAS DataBase Reference: 5-bromo-6-nitro-1,2-dihydroacenaphthylene(CAS DataBase Reference)
• NIST Chemistry Reference: 5-bromo-6-nitro-1,2-dihydroacenaphthylene(4889-63-8)
• EPA Substance Registry System: 5-bromo-6-nitro-1,2-dihydroacenaphthylene(4889-63-8)

Safety Data

• Hazardous Substances Data: 4889-63-8(Hazardous Substances Data)

Upstream product

• 2051-98-1 5-bromoacenaphthene 
• 7697-37-2 nitric acid 
• 64-19-7 acetic acid 
• 4889-65-0 2.2a.3.4.5.6-Hexabrom-2a.3.4.5-tetrahydroacenaphthen 
• 83-32-9 acenaphthene 
• 4657-98-1 4-bromo-acenaphthene 

Downstream Products

• 19190-91-1 5,6-dibromoacenaphthene 

Relevant articles and documents

Ratiometric fluorescence sensing and cellular imaging of Cu2+ by a new water soluble trehalose-naphthalimide based chemosensor

A new turn-on Cu2+ fluorescent sensor (CST) having a trehalose moiety, which confers a relatively large solubility in water, has been synthesized. The chemosensor is therefore suitable for studies in aqueous solution. Full potentiometric and UV-vis characterization evidence that at physiological pH CST forms with Cu2+ a species with a 1 : 1 stoichiometry allowing for a straightforward correlation between CST response and copper(ii) concentration. The presence of the trehalose unit does not negatively affect the selectivity of CST for Cu2+ over a series of metal ions of interest as proven by fluorescence measurements. The novel chemosensor, tested in differentiated neuroblastoma SH-SY5Y cells, is able to detect Cu2+ in the extracellular region, as well as to track copper transfer processes upon cell stimulation induced by cellular depolarization.

Fluorescent dye based on naphthalimide and preparation method, and application thereof

The invention relates to a fluorescent dye based on naphthalimide, and a preparation method and an application thereof. Specifically, the invention provides a naphthalimide fluorophore which has a structure as shown in a general formula I which is described in the speicification, wherein groups in the formula I are described in the specification. The compound provided by the invention has good water solubility and high fluorescent quantum yield in an aqueous solution, and can be used for two-photon imaging and co-localization imaging to living cells.

The effect of the regioisomeric naphthalimide acetylide ligands on the photophysical properties of N^N Pt(ii) bisacetylide complexes

Two N^N Pt(ii) bis(acetylide) complexes Pt-1 and Pt-2 with regioisomeric amino NI acetylide ligands (L-1 and L-2, L-1 = 5-amino-4-ethylnaphthaleneimide; L-2 = 3-amino-4-ethylnaphthaleneimide) were prepared. The photophysical properties of the complexes were studied by steady state and time-resolved spectroscopy. The two complexes with regioisomeric ligands (Pt-1 and Pt-2) show different photophysical properties such as maximal absorption wavelength (485 nm vs. 465 nm), triplet excited state lifetimes (23.7 μs vs. 0.9 μs), and different solvent-polarity dependences of the emission properties. The absorption of the complexes is red-shifted as compared with the previously reported Pt(ii) complex containing the 4-ethylnaphthaleneimide ligand. The two complexes with regioisomeric NI ligands were used as triplet photosensitizers for triplet-triplet annihilation (TTA) upconversion; drastically different upconversion quantum yields (15.0% vs. 1.1%) were observed. Our results are useful for designing new visible light-harvesting Pt(ii) bisacetylide complexes as triplet photosensitizers which can be used in areas such as photocatalysis, photodynamic therapy and TTA upconversion.