175922-78-8

Basic information

• Product Name: 9,9-Didecyl-2,7-dibromofluorene
• Synonyms: 9,9-Didecyl-2,7-dibromofluorene;2,7-Dibromo-9,9-didecyl-9H-fluorene;2,7-Dibromo-9,9-didecylfluorene;2,7-DibroMo-9,9-didecylfluorene,9,9-didecyl-2,7-dibroMofluorene
• CAS NO: 175922-78-8
• Molecular Formula: C₃₃H₄₈Br₂
• Molecular Weight: 604.55
• Product Categories: Fluorene Series
• Mol File: 175922-78-8.mol
• Article Data: 10

Chemical Properties

• Melting Point: 38.0 to 42.0 °C
• Boiling Point: 610.257 °C at 760 mmHg
• Flash Point: 368.438 °C
• Appearance: /
• Density: 1.166
• Vapor Pressure: 3.5E-14mmHg at 25°C
• Refractive Index: 1.536
• Storage Temp.: Sealed in dry,Room Temperature
• Solubility: soluble in Tetrahydrofuran
• CAS DataBase Reference: 9,9-Didecyl-2,7-dibromofluorene(CAS DataBase Reference)
• NIST Chemistry Reference: 9,9-Didecyl-2,7-dibromofluorene(175922-78-8)
• EPA Substance Registry System: 9,9-Didecyl-2,7-dibromofluorene(175922-78-8)

Safety Data

• Hazardous Substances Data: 175922-78-8(Hazardous Substances Data)

Usage

Uses

9,9-Didecyl-2,7-dibromofluorene (CAS# 175922-78-8) is a useful building block and has been used in the preparation of heat-resistant, fluorescent polyfluorene, as well as in the preparation of conducting polymer for use in solar cells.

InChI:InChI=1/C33H48Br2/c1-3-5-7-9-11-13-15-17-23-33(24-18-16-14-12-10-8-6-4-2)31-25-27(34)19-21-29(31)30-22-20-28(35)26-32(30)33/h19-22,25-26H,3-18,23-24H2,1-2H3

Upstream product

• 86-73-7 9H-fluorene 
• 123864-01-7 9,9-didecyl-9H-fluorene 
• 112-29-8 1-bromo dodecane 
• 16433-88-8 2,7-dibromo-9H-fluorene 

Downstream Products

• 1088375-92-1 9,9-didecyl-N₂,N₇-bis-4-methoxyphenyl-N₂,N₇-diphenyl-9H-fluoren-2,7-diamine 
• 711026-06-1 2,2'-(9,9-didecyl-9H-fluorene-2,7-diyl)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane) 

Relevant articles and documents

New bead type and high symmetrical diallyl-POSS based emissive conjugated polyfluorene

A new bead type and diallyl-POSS based polyfluorene (P2) with high symmetrical structure was synthesized via Heck coupling reaction between oligomeric alkynyl fluorene (P1) and diallyl polyhedral oligomeric silsesquioxanes (diallyl-POSS). The molecular we

An all-small-molecule organic solar cell derived from naphthalimide for solution-processed high-efficiency nonfullerene acceptors

Two small molecules BYG-1 and BYG-2 with fluorene donor and benzothiadiazole acceptor units connected to the terminal naphthamide group via ethyne linker were designed and synthesized. In this work we have discussed the effect of fluorine atoms connected with electron withdrawing benzothiadiazole unit to the fluorene core (BYG-1). In this study, we have fabricated solar cells with small-molecular donor and acceptor materials in the device architecture of bulk-heterojunction, using highly conjugated BYG-1 and BYG-2 as electron acceptors along with an appropriate small molecule donor (SMD). After improving the device architecture of the active layer using a suitable donor-to-acceptor weight ratio with solvent vapour annealing, we achieved power conversion efficiencies of 8.67% and 7.12% for BYG-1 and BYG-2, respectively. The superior photovoltaic performance of the fluorine-substituted BYG-1 can be attributed to its higher crystallinity, more balanced charge transport mobilities and efficient exciton dissociation.

Conjugated polymers with carbazole, fluorene, and ethylene dioxythiophene in the main chain and a pendant cyano group: Synthesis, photophysical, and electrochemical studies

Six new conjugated polymers comprising of carbazole, fluorene, and ethylene dioxythiophene (EDOT) moieties along the backbone with a pendant cyano group attached to the ethylene moiety have been designed and synthesized via Sonogashira coupling polymerization reaction. Optical and electrochemical characterizations have shown that the energy band gaps lie within the range of 2.35–2.44 eV. Additionally, the presence of carbazole and EDOT makes these polymers better hole transporting materials, which is reflected from their low oxidation potential peaks (0.55–1.11 V) in cyclic voltammograms. Furthermore, the aggregation enhanced emission (AEE) phenomenon resulted in a 2.6-fold increase in fluorescence intensity in a 90:10 THF/water mixture in comparison to pristine THF. The AEE properties were further verified by DLS (dynamic light scattering) experiment and SEM (scanning electron microscopy) studies. Polymers in solution as well as in polystyrene matrix emit in the green region (quantum yield in solution state Φf =41–43%) with CIE values (0.25–0.36, 0.52–0.57). Excellent thermal stability is observed for the new polymers.