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128055-74-3

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  • 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene CAS 128055-74-3 CAS no 128055-74-3 9,9'-Spirobi[9H-fluorene],2,2',7,7'-tetrabromo-

    Cas No: 128055-74-3

  • USD $ 3.5-5.0 / Kiloliter

  • 5 Kiloliter

  • 3000 Metric Ton/Month

  • Chemwill Asia Co., Ltd.
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128055-74-3 Usage

Description

2,2′,7,7′-Tetrabromo-9,9′-spirobifluorene is a spirobifluorene (SBF) derivative and is used as a blue-emitting material in electroluminescent devices. The spirobifluorene linkage in the molecule helps in decreasing the crystallization tendency and also increases the colour stability by preventing the formation of aggregates or excimers. They possess high photoluminescence efficiency and good chemical stability.

Chemical Properties

White to light yellow powder

Uses

Different sources of media describe the Uses of 128055-74-3 differently. You can refer to the following data:
1. 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene is used in the preparation of OLEDs using amorphous compounds with spiro-bifluorene core.
2. 2,2'',7,7''-Tetrabromo-9,9''-spirobifluorene is used in the preparation of OLEDs using amorphous compounds with spiro-bifluorene core.

Application

Blue light emitting material in Organic Light Emitting Diodes (OLEDs).

General Description

2,2′,7,7′-Tetrabromo-9,9′-spirobifluorene is a spirobifluorene (SBF) derivative and is used as a blue-emitting material in electroluminescent devices. The spirobifluorene linkage in the molecule helps in decreasing the crystallization tendency and also increases the colour stability by preventing the formation of aggregates or excimers. They possess high photoluminescence efficiency and good chemical stability.

Check Digit Verification of cas no

The CAS Registry Mumber 128055-74-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,0,5 and 5 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 128055-74:
(8*1)+(7*2)+(6*8)+(5*0)+(4*5)+(3*5)+(2*7)+(1*4)=123
123 % 10 = 3
So 128055-74-3 is a valid CAS Registry Number.

128055-74-3 Well-known Company Product Price

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  • TCI America

  • (T2597)  2,2',7,7'-Tetrabromo-9,9'-spirobi[9H-fluorene]  >98.0%(T)

  • 128055-74-3

  • 1g

  • 1,190.00CNY

  • Detail
  • TCI America

  • (T2597)  2,2',7,7'-Tetrabromo-9,9'-spirobi[9H-fluorene]  >98.0%(T)

  • 128055-74-3

  • 5g

  • 3,990.00CNY

  • Detail
  • TCI America

  • (T2597)  2,2',7,7'-Tetrabromo-9,9'-spirobi[9H-fluorene]  >98.0%(T)

  • 128055-74-3

  • 1g

  • 1,190.00CNY

  • Detail
  • TCI America

  • (T2597)  2,2',7,7'-Tetrabromo-9,9'-spirobi[9H-fluorene]  >98.0%(T)

  • 128055-74-3

  • 5g

  • 3,990.00CNY

  • Detail
  • Aldrich

  • (763888)  2,2′,7,7′-Tetrabromo-9,9′-spirobifluorene  ≥98% (HPLC)

  • 128055-74-3

  • 763888-1G

  • 1,750.32CNY

  • Detail
  • Aldrich

  • (763888)  2,2′,7,7′-Tetrabromo-9,9′-spirobifluorene  ≥98% (HPLC)

  • 128055-74-3

  • 763888-5G

  • 6,259.50CNY

  • Detail
  • TCI America

  • (T2597)  2,2',7,7'-Tetrabromo-9,9'-spirobi[9H-fluorene]  >98.0%(T)

  • 128055-74-3

  • 1g

  • 1,190.00CNY

  • Detail
  • TCI America

  • (T2597)  2,2',7,7'-Tetrabromo-9,9'-spirobi[9H-fluorene]  >98.0%(T)

  • 128055-74-3

  • 5g

  • 3,990.00CNY

  • Detail
  • TCI America

  • (T2597)  2,2',7,7'-Tetrabromo-9,9'-spirobi[9H-fluorene]  >98.0%(T)

  • 128055-74-3

  • 1g

  • 1,190.00CNY

  • Detail
  • TCI America

  • (T2597)  2,2',7,7'-Tetrabromo-9,9'-spirobi[9H-fluorene]  >98.0%(T)

  • 128055-74-3

  • 5g

  • 3,990.00CNY

  • Detail

128055-74-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017

1.Identification

1.1 GHS Product identifier

Product name 2,2,7,7-Tetrabromo-9,9-Spirobi[9H-Fluorene]

1.2 Other means of identification

Product number -
Other names 2,2',7,7'-Tetrabromo-9,9'-spirobi[fluorene]

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:128055-74-3 SDS

128055-74-3Relevant articles and documents

Toward stable interfaces in conjugated polymers: Microporous poly(p-phenylene) and poly(phenyleneethynylene) based on a spirobifluorene building block

Weber, Jens,Thomas, Arne

, p. 6334 - 6335 (2008)

Conjugated polymer networks based on spirobifluorene building units exhibit defined photoluminescence as well as pronounced microporosity, that is, large, stable interfaces. Copyright

Bigger and Brighter Fluorenes: Facile π-Expansion, Brilliant Emission and Sensing of Nitroaromatics

Ramakrishna, Jagarapu,Venkatakrishnan, Parthasarathy

, p. 181 - 189 (2017)

π-Expanded butterfly-like 2D fluorenes and 3D spirobifluorenes 1–5 were synthesized via a DDQ-mediated oxidative cyclization strategy with a high regioselectivity. Through structural modification via π-expansion, it was possible to achieve near-ultraviolet absorption, bright-blue emission, very high near-unity fluorescence quantum yields in solution as well as in film states, and deep-lying HOMO energy levels with excellent thermal stabilities. Furthermore, these electron-rich compounds displayed a notable behavior towards sensing of nitroaromatic explosives, such as picric acid, up to a detection limit of 0.2 ppb.

Nonlinear-Optical Behaviors of a Chiral Metal-Organic Framework Comprised of an Unusual Multioriented Double-Helix Structure

Huang, Xiaoli,Li, Qiyang,Xiao, Xue,Jia, Shuping,Li, Yue,Duan, Zhigang,Bai, Lei,Yuan, Ze,Li, Lin,Lin, Zhihua,Zhao, Yonggang

, p. 6210 - 6213 (2018)

We present here the synthesis of one enantiomeric pair of metal-organic framework materials comprised of a unique multioriented double-helix structure from an achiral spirocenter ligand. Our study clearly shows that the chiral MOF material encompasses concurrently multiple nonlinear-optical functions in the solid state: the noncentrosymmetric structural feature brings the chiral MOF high second-harmonic-generation efficiency; the incorporation of the spirocenter ligand can efficiently produce two-photon-excited photoluminescence with a larger-action cross-sectional value.

HETEROATOMIC-BASED HOLE-TRANSPORT MATERIALS

-

, (2021/04/30)

Heteroatomic hole transport materials are provided. The hole transport materials include a non-carbon core: two, four, or eight aromatic groups covalently bound to the non-carbon core; a. terminal substituted diphenylamine end unit on each aromatic group: and optionally aromatic linker groups linking the aromatic groups and the substituted diphenylamine end units. In some embodiments the non-carbon core is non-carbon central atom such as Si, Ge, B?, P+Sn or Pb. In other embodiments, the non-carbon core is a cubic silsesquioxane. Also provided are methods for making these materials. The materials are particularly useful as hole transport materials in perovskite solar cells.

{[Ru(bda)]:XLy}n cross-linked coordination polymers: Toward efficient heterogeneous catalysis for water oxidation in an organic solvent-free system

Zheng, Tao,Li, Lianwei

supporting information, p. 2526 - 2536 (2018/02/19)

Recently, the development of polymeric catalysts for water splitting has received an increasing amount of attention. In this study, we successfully developed a few novel cross-linked coordination polymers (CCPs) with the formula {[Ru(bda)]xLy}n as efficient heterogeneous catalysts for water oxidation in an organic solvent-free system, where Ru(bda) represents the catalytic center. Detailed water oxidation catalytic kinetics studies suggested that single-site water nucleophilic attack (WNA) is the general mechanism applied to these polymeric catalysts, which is different to the small-molecular reference, [Ru(bda)(pic)2] (pic = 4-picoline). The experimental evidence also indicated the importance of interfacial wettability and the existence of the Ru(bda)-macrocyclic fragments in the polymer network in determining the overall catalytic activity. More interestingly, end-capping modification via the pyridine/DMSO exchange reaction further removed the residual Ru(DMSO)x moieties on the surfaces of the polymer network, which leads to the improved performance with an impressive TOF of ~4.6 s-1 and TON of ~750 in an organic solvent-free system, which are superior to [Ru(bda)(pic)2]. The rate of catalysis is among the highest for a heterogeneous system reported to date. An electrochemical study showed the polymeric catalysts were also promising electrode materials for electrocatalytic water oxidation and an electrode based on CCP/Nafion/ITO maintained ~73% of its initial activity after 27 cycles under the optimal conditions.

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