N-DODECYLAMMONIUM IODIDE C₁₂H₂₈IN 99% CAS 34099-97-3

RESEARCH GRADE MATERIAL

Product Overview

n-Dodecylammonium Iodide (C₁₂H₂₈IN, CAS 34099-97-3) is an ultra-long straight-chain alkyl iodide salt 2D perovskite precursor with C₁₂H₂₈IN 99% purity, supplied as a white powder with a molecular weight of 313.26 g/mol and freely soluble in perovskite polar organic solvents including DMF and DMSO. The twelve-carbon dodecyl chain provides the strongest hydrophobic effect among common alkylammonium spacer cations, constructing exceptionally stable two-dimensional layered perovskite structures. This 2D perovskite hydrophobic barrier material effectively blocks moisture and oxygen ingress into the perovskite lattice, passivates grain boundary and surface iodine vacancy defects, and suppresses perovskite phase degradation. The ultra-long alkyl chain delivers dramatic improvements in device environmental stability that significantly exceed those achievable with shorter-chain analogs. Widely employed in the fabrication and surface passivation modification of 2D perovskite solar cells, photodetectors, and X-ray sensor devices, this precursor is compatible with spin-coating and precursor co-blending mainstream experimental processes. With uniform batch-to-batch purity and good experimental reproducibility, the product requires strict light-sensitive hygroscopic glovebox storage to maintain material integrity.

Technical Specifications

PARAMETER	DETAILS
Molecular Formula	C₁₂H₂₈IN
CAS Number	34099-97-3
Molecular Weight	313.26 g/mol
Alkyl Chain Length	C12 (Dodecyl)
Specification	10 g
Purity	>99%
Physical Form	White Powder
Solubility	Freely Soluble in DMF, DMSO and Polar Organic Solvents
Storage Conditions	Light-Protected, Dry, Sealed, Room Temperature; Long-Term: N₂ Glovebox Recommended
Custom Configurations	Other packaging specifications are available upon request. Please contact us via email for custom orders.

Key Features & Advantages

Ultra-Long C12 Chain for Maximum Hydrophobic Protection: The twelve-carbon dodecyl chain provides the most robust hydrophobic barrier among standard alkylammonium spacers, delivering dramatically superior moisture and oxygen exclusion compared to shorter-chain butyl, hexyl, or octyl analogs for ultimate environmental stability.
Suppression of Perovskite Phase Degradation: The dense hydrophobic organic layer formed by the dodecylammonium cation effectively prevents water-induced perovskite phase transition and decomposition, maintaining the photoactive black phase under ambient conditions that would rapidly degrade unprotected films.
Iodine Vacancy and Grain Boundary Passivation: The ammonium head group passivates iodine vacancy defects and grain boundary trap states while the ultra-long chain provides an extended spatial barrier that physically separates adjacent perovskite grains from environmental exposure pathways.
Ideal for High-Stability Device Applications: The exceptional environmental stability imparted by the C12 spacer makes this precursor particularly well-suited for 2D perovskite solar cells, X-ray detectors, and photodetectors where long-term operational stability under ambient conditions is a critical performance requirement.

APPLICATION SCOPE: Ultra-long-chain organic spacer cation for highly stable 2D Ruddlesden-Popper phase perovskite synthesis. Maximum hydrophobic barrier precursor for moisture-resistant and oxygen-resistant perovskite devices. Surface passivation and grain boundary modification agent for iodine vacancy defect suppression. Phase degradation inhibitor for maintaining photoactive perovskite phase under ambient exposure. Compatible with spin-coating and precursor co-blending deposition protocols. Supports 2D perovskite solar cell, photodetector, and X-ray sensor device research in university and research institute laboratories where extended ambient stability is the primary experimental objective.

PACKAGING: This listing is for the 10 g specification. Other packaging weights are available upon custom request. Each package is sealed under inert atmosphere within light-protective packaging to prevent photodegradation and moisture ingress. The hygroscopic nature of n-dodecylammonium iodide necessitates immediate transfer to a desiccated, light-protected storage environment—preferably a nitrogen-filled glovebox for long-term storage. For bulk quantities or custom packaging specifications, please contact us via email.

IMPORTANT NOTICE: n-Dodecylammonium iodide is hygroscopic and light-sensitive. Tighten the container cap immediately after each use to prevent moisture ingress from ambient air. Wear protective gloves throughout all experimental procedures; avoid direct skin contact with the powder. Store in a light-protected, moisture-free environment; do not store together with strong acids or strong oxidizing agents. Prioritize powder weighing and solution preparation within a nitrogen-filled inert glovebox (H₂O < 1 ppm, O₂ < 1 ppm). For long-term storage, inert-atmosphere glovebox conditions are recommended. Exposure to atmospheric moisture will cause deliquescence and hydrolysis, irreversibly degrading precursor stoichiometry. Note that the long C12 chain may reduce precursor solubility compared to shorter-chain analogs—ensure complete dissolution before filtration or deposition. For detailed safety and handling information, consult the Safety Data Sheet prior to use.

TAILORED SOLUTIONS FOR RESEARCH

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CAS 34099-97-3

n-Dodecylammonium Iodide C₁₂H₂₈IN 99% CAS 34099-97-3