Skip to Content
MilliporeSigma
All Photos(2)

Documents

923192

Sigma-Aldrich

Spiro-TTB

greener alternative

≥99% (HPLC)

Synonym(s):

2,2′,7,7′- Tetrakis(N,N′-di-p-methylphenylamino)-9,9′-spirobifluorene, 2,2′,7,7′-Tetra(N, N-di-tolyl)amino-spiro-bifluorene, 2,2′,7,7′-Tetra(N,N-di-p-tolyl)amino-9,9-spirobifluorene, 2,2′,7,7′-Tetra(N,N-ditolylL)amino-9,9-spiro-bifluorene, 2,2′,7,7′-Tetrakis(di-p-tolylamino)-9,9′-spirobi[fluorene], 2,2′,7,7′-Tetrakis(di-p-tolylamino)spiro-9,9′-bifluorene, N2,N2,N2′,N2′,N7,N7,N7′,N7′-Octa-p-tolyl-9,9′-spirobi[fluorene]-2,2′,7,7′-tetraamine

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

Empirical Formula (Hill Notation):
C81H68N4
CAS Number:
515834-67-0
Molecular Weight:
1097.43
MDL number:
MFCD28968052
NACRES:
NA.23

description

PL:409 nm (in THF)
TGA:> 360 °C (0.5% weight loss)
Tg: 146 °C

Quality Level

100

assay

≥99% (HPLC)

mol wt

average mol wt 1097.43 g/mol

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

loss

0.5% TGA, >360°C

transition temp

Tg 146 °C

solubility

THF: soluble

λmax

385 nm in THF

orbital energy

HOMO 5.2 eV 
LUMO 1.9 eV 

greener alternative category

, Enabling

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product belongs to enabling category of greener alternatives, and has been enhanced for energy efficiency. Click here for more information.

Application

Spiro-TTB is a high-mobility organic semiconductor with strong donor character given its four substituted arylamine moieties that stabilize positively charged cationic states via mesomeric effects.
It has been successfully applied as transparent hole-transparent layer in solar cells, organic field-effect transistors (OFETs), and organic light emitting devices (OLEDs). In photovoltaics, spiro-TTB was used as organic hole selective layer between perovskite and the silicon cells, contributing to a 25.2% efficency perovskite/ silicon tandem solar cell. When used in OLEDs, spiro-TTB enabled applications in organic photodetectors (OPDs), imaging and lasing applications.
Spiro-TTB is used as a hole transport material in OLED devices, organic photovoltaics (OPVs), organic field-effect transistors (OFETs) and perovskite solar cells. It exhibits excellent hole injection and transport properties, enabling efficient charge transport from the anode to the emitting layers of the OLED structure. This contributes to improved device performance, stability, and overall efficiency.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Hyperbranched Polymers with High Transparency and Inherent High Refractive Index for Application in Organic Light-Emitting Diodes.
Wei Q, et al.
Advances in Functional Materials, 26, 2545-2553 (2016)
Yucheng Liu et al.
Advanced materials (Deerfield Beach, Fla.), 33(8), e2006010-e2006010 (2021-01-22)
Low ionic migration is required for a semiconductor material to realize stable high-performance X-ray detection. In this work, successful controlled incorporation of not only methylammonium (MA+ ) and cesium (Cs+ ) cations, but also bromine (Br- ) anions into the
Spiro-Linked Molecular Hole-Transport Materials for Highly Efficient Inverted Perovskite Solar Cells.
Wang C, et al.
Solar RRL, 4, 1900389-1900389 (2020)
Caroline Murawski et al.
Advanced materials (Deerfield Beach, Fla.), 31(42), e1903599-e1903599 (2019-09-06)
Fluorescence imaging is an indispensable tool in biology, with applications ranging from single-cell to whole-animal studies and with live mapping of neuronal activity currently receiving particular attention. To enable fluorescence imaging at cellular scale in freely moving animals, miniaturized microscopes
Plasmon-Induced Sub-Bandgap Photodetection with Organic Schottky Diodes.
Hou J L, et al.
Advances in Functional Materials, 26, 5741-5747 (2016)
View All Related Papers

Articles

Solution Gated Field Effect Transistors for Biosensing Applications

Novel biosensing devices, like bio-FET sensors, offer label-free analysis by detecting ionic and biomolecular charges, crucial for diagnostics and biological research.

Towards Greener Organic Transistor Sensors

Explore the eco-friendly potential of organic thin film transistors (OTFTs) for detecting chemical analytes, identifying viruses, and assisting in health diagnostics. This mini-review highlights challenges of achieving sustainability, safety, and biodegradability of each component of an OTFT sensor.

Perovskite Solar Cells

Dr. Perini and Professor Correa-Baena discuss the latest research and effort to obtain higher performance and stability of perovskite materials.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service