20856-79-5

Basic information

• Product Name: Benzoic acid, 2,5-diiodo-4-methyl-
• CAS NO: 20856-79-5
• Molecular Formula: C8H6I2O2
• Molecular Weight: 387.943
• Mol File: 20856-79-5.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: Benzoic acid, 2,5-diiodo-4-methyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Benzoic acid, 2,5-diiodo-4-methyl-(20856-79-5)
• EPA Substance Registry System: Benzoic acid, 2,5-diiodo-4-methyl-(20856-79-5)

Safety Data

• Hazardous Substances Data: 20856-79-5(Hazardous Substances Data)

Upstream product

• 20870-97-7 2,5-Diiod-p-toluylsaeurenitril 
• 106-42-3 para-xylene 
• 82998-57-0 3-iodo-4-toluic acid 
• 1124-08-9 2,5-diiodo-p-xylene 

Downstream Products

• 935271-96-8 bis(2-ethylhexyl) 2,5-diiodoterephthalate 
• 90841-95-5 dimethyl 2,5-diiodo-1,4-benzenedicarboxylate 
• 167895-30-9 1,4-bis(N,N-dioctylcarbamoyl)-2,5-diiodobenzene 
• 173068-99-0 2,5-diiodobenzene-1,4-dicarbonyl dichloride 
• 20856-80-8 2,5-diiodo-1,4-dibenzoic acid 

Relevant articles and documents

Substituent Effects That Control Conjugated Oligomer Conformation through Non-covalent Interactions

Although understanding the conformations and arrangements of conjugated materials as solids is key to their prospective applications, predictive power over these structural factors remains elusive. In this work, substituent effects tune non-covalent interactions between side-chain fluorinated benzyl esters and main-chain terminal arenes, in turn controlling the conformations and interchromophore aggregation of three-ring phenylene-ethynylenes (PEs). Cofacial fluoroarene-arene (ArF-ArH) interactions cause twisting in the PE backbone, interrupting intramolecular conjugation as well as blocking chromophore aggregation, both of which prevent the typically observed bathochromic shift observed upon transitioning PEs from solution to solid. This work highlights two structural factors that determine whether the ArF-ArH interactions, and the resulting twisted, unaggregated chromophores, occur in these solids: (i) the electron-releasing characteristic of substituents on ArH, with more electron-releasing character favoring ArF-ArH interactions, and (ii) the fluorination pattern of the ArF ring, with 2,3,4,5,6-pentafluorophenyl favoring ArF-ArH interactions over 2,4,6-trifluorophenyl. These trends indicate that considerations of electrostatic complementarity, whether through a polar-π or substituent-substituent mechanism, can serve as an effective design principle in controlling the interaction strengths, and therefore the optoelectronic properties, of these molecules as solids.

Design principle of conjugated polyelectrolytes to make them water-soluble and highly emissive

The correlation between the molecular design of a conjugated polyelectrolyte (CPE) and its aggregated structure and the emissive properties in water is systematically investigated by means of UV-vis spectrometry, fluorescence spectroscopy, and scanning/tr

Fluorescent chemosensors based on energy migration in conjugated polymers: The molecular wire approach to increased sensitivity

We demonstrate herein how conjugated polymers (molecular wires) can be used to interconnect (wire in series) receptors to produce fluorescent chemosensory systems with sensitivity enhancements over single receptor analogues. The enhancement mechanism in t