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2BrPTZPA

Product Name: 2BrPTZPA, Br-4BPT, (4-(3,7-dibromo-10H-phenothiazin-10-yl)butyl)phosphonic acid
Catalog Number: ALCM-SAM002
CAS Number: N/A

Product Description

Chemical Structure of 2BrPTZPA

2BrPTZPA is a phosphonic acid-functionalized self-assembled monolayer (SAM) molecule developed for interface engineering in perovskite and organic photovoltaic devices. The molecule features a modular structure composed of a phosphonic acid anchoring group, a four-carbon alkyl spacer, and a phenothiazine-based terminal substituted with bromine atoms at the 3 and 7 positions.

Phenothiazine is a sulfur-containing heterocycle known for its electron-donating properties. In 2BrPTZPA, the incorporation of this moiety provides enhanced interfacial interaction with perovskite films and facilitates energy level alignment. Compared to carbazole-based SAMs, the presence of sulfur offers additional benefits in terms of film formation and coordination with metal ions at the interface. This structural design helps improve charge selectivity and contributes to the formation of uniform, defect-reduced layers between the active layer and electrode.

Key Features

Anchoring Group: Phosphonic acid for robust binding to oxide substrates
Spacer Unit: Four-carbon alkyl chain enabling controlled molecular orientation
Terminal Group: Dibromo-substituted phenothiazine for effective interfacial contact
Solubility: Compatible with THF, methanol, ethanol, IPA, DMF, and similar solvents
Processing: Spin-coatable from dilute solutions; suitable for low-temperature treatment
Application Focus: Interfacial layer in p-i-n perovskite and organic solar cells

Product Information

Item	Details
CAS Number	N/A
Catalog Number	ALCM-SAM002
Synonyms	Br-4BPT, (4-(3,7-dibromo-10H-phenothiazin-10-yl)butyl)phosphonic acid
Chemical Formula	C16H16Br2NO3PS
Molecular Weight	493.15 g/mol
Purity	> 98% (HPLC)
Appearance	Blue powder/crystals
Melting Point	Td = 234 °C
HOMO / LUMO	HOMO = 5.51 eV, LUMO = 2.52 eV
Absorption	λmax = 319 nm (in THF); 324 nm (in film)
Fluorescence	Not available

Applications

Self-assembled monolayers (SAMs) for interfacial engineering
Hole-selective contacts in p-i-n perovskite and organic solar cells
Solution-processable alternative to PEDOT:PSS
Interface passivation and energy level alignment layer

Why Choose Alfa Chemistry?

Alfa Chemistry supplies high-performance self-assembled monolayer materials manufactured under rigorous quality standards. With rapid global delivery, reliable analytical validation, and expert technical support, our SAM products are well-suited for both frontier academic research and scalable photovoltaic production.

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