16433-88-8 Usage
Description
2,7-Dibromofluorene is a halogenated polycyclic aromatic compound, characterized by its white to off-white crystalline powder appearance. Its vapour pressure has been measured using the Knudsen effusion method.
Uses
Used in Organic Light Emitting Devices (OLEDs):
2,7-Dibromofluorene is used as a template for the N-carbazole capped oligofluorenes, which show potential as hole-transporting materials for OLEDs. This application takes advantage of its ability to enhance the performance of these devices by improving their efficiency and brightness.
Used in Synthesis of Conjugated Polymers:
In the field of polymer chemistry, 2,7-Dibromofluorene is utilized in the synthesis of conjugated polymer, poly[9,9′-bis(6′′-N,N,N-trimethylammonium)hexyl)fluorene-co-alt-4,7-(2,1,3-benzothiadiazole) dibromide] (PFBT). This polymer is used in label-free DNA microarrays, which are essential tools in molecular biology and genomics research.
Used in Preparation of Blue Photoluminescent Polyfluorene:
2,7-Dibromofluorene is also employed in the preparation of blue photoluminescent unsymmetrically substituted polyfluorene. This application leverages its properties to create materials with specific optical and electronic characteristics, which are valuable in various optoelectronic applications.
Used in Preparation of Dendrimers:
Furthermore, 2,7-Dibromofluorene is used in the preparation of 2,7-dibromofluorene monomers containing benzyl ether dendrons (generations 1, 2, and 3) in the 9,9′-position of the fluorene ring. These dendrimers have potential applications in various fields, including drug delivery, catalysis, and sensing, due to their unique structural and functional properties.
Check Digit Verification of cas no
The CAS Registry Mumber 16433-88-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,4,3 and 3 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 16433-88:
(7*1)+(6*6)+(5*4)+(4*3)+(3*3)+(2*8)+(1*8)=108
108 % 10 = 8
So 16433-88-8 is a valid CAS Registry Number.
InChI:InChI=1/C13H8Br2/c14-10-1-3-12-8(6-10)5-9-7-11(15)2-4-13(9)12/h1-4,6-7H,5H2
16433-88-8Relevant articles and documents
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Holbro,Tagmann
, p. 2178,2182 (1950)
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Simple and efficient method for obtaining fluorene and spirobifluorene bromide derivatives
Jiang, Wen-Feng,Wang, Hui-Long,Wang, An-Gang,Li, Zhe-Qi
, p. 1888 - 1895 (2008/09/20)
A mild, simple, and efficient synthetic procedure for the preparation of 2-monobromo-, 2,7-dibromo-, and 2,2′,7,7′-tetrabromo-substituted spirobifluorene derivatives and their key intermediates, 2-monobromo- and 2,7-dibromo-substituted fluorene compounds, has been developed. The oxidative bromination of fluorene and spirobifluorene was achieved using NaBr/H2O2 as the bromine source. High conversion of the starting materials was achieved together with good selectivities under optimized reaction conditions. Copyright Taylor & Francis Group, LLC.
Increasing the selectivity of bromination of aromatic compounds using Br2/SiO2
Ghiaci,Asghari
, p. 1151 - 1152 (2007/10/03)
Br2/SiO2 possessed considerable practical advantages over traditional reagents for the bromination of aromatic hydrocarbons, e.g., toluene, o-, m-, and p-xylene, anthracene and phenol. In the presence of SiO2, toluene reacted with bromine instantly. Compounds containing electron-donating substituents showed mainly bromination on the rings. The behavior of o-, m-, and p-xylene showed predominant substitution on the rings. The bromination of phenol to p-bromophenol showed good yield at 81%. Naphthalene was monobrominated to 1-bromonaphthalene with a yield of 84% in 2 has the potential to alter reaction selectivity. It may be able to switch a mechanism from radical to polar, or to influence the regioselectivity of the products formed. In the absence of SiO2, selectivity was lost and a mixture of products by substitution of bromine atom on the ring and on the side chain without any preferability was obtained. The nature of silica gel was important for the success of the reaction. Optimal results were obtained with silica gel dried at 250°C for 1 hr.
