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5-Ammoniumvaleric Acid Iodide C₅H₁₂INO₂ 99% Purity 5-AVAI White Solid Powder Carboxyl-Ammonium Dual-Functional Perovskite Defect Passivation Precursor CAS 1705581-28-7 Light-Sensitive Hygroscopic Glovebox Storage

5-Ammoniumvaleric Acid Iodide 99% 5g 5-AVAI

$222.00

Institutional Procurement & Supply Compliance: As a verified US supplier, Atomfair accepts formal institutional Purchase Orders (POs), contract billing schedules, and custom procurement loops for university and national laboratories, and corporate R&D departments globally.

Research-grade 5-AVAI iodide powder, >99% purity, 5 g, CAS 1705581-28-7; soluble in DMF/DMSO for perovskite thin-film defect passivation. Order now.

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Description

5-AMMONIUMVALERIC ACID IODIDE C₅H₁₂INO₂ 99% 5-AVAI CAS 1705581-28-7

RESEARCH GRADE MATERIAL

Product Overview
5-Ammoniumvaleric Acid Iodide (C₅H₁₂INO₂, 5-AVAI, CAS 1705581-28-7) is a carboxyl-functionalized alkyl iodide salt perovskite modification precursor with C₅H₁₂INO₂ 99% purity 5-AVAI, supplied as a white solid powder with a molecular weight of 245.06 g/mol and freely soluble in perovskite-relevant polar organic solvents including DMF and DMSO. This compound features a unique dual-functional molecular architecture bearing both ammonium and carboxyl groups, functioning as an advanced perovskite defect passivation agent. When incorporated into perovskite systems, the carboxyl group coordinates with lead sites to efficiently passivate lead dangling bonds and iodine vacancy defects at thin film surfaces and grain boundaries, dramatically reducing non-radiative recombination losses and extending carrier lifetime. The flexible alkyl chain simultaneously relieves perovskite thin film stress, improves film formation quality, and enhances device humidity and thermal stability. Widely utilized in high-efficiency perovskite solar cell, photodetector, and light-emitting device defect passivation research, this precursor is compatible with spin-coating and precursor co-blending mainstream thin-film preparation techniques. With stable batch-to-batch purity and excellent experimental reproducibility, the product requires strict light-sensitive hygroscopic glovebox storage to maintain material integrity.

Technical Specifications
PARAMETER DETAILS
Product Abbreviation 5-AVAI
Full Name 5-Ammoniumvaleric Acid Iodide
Molecular Formula C₅H₁₂INO₂
CAS Number 1705581-28-7
Molecular Weight 245.06 g/mol
Functional Groups Ammonium (-NH₃⁺) / Carboxyl (-COOH)
Specification 5 g
Purity >99%
Physical Form White Solid 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
  • Carboxyl-Lead Coordination for Superior Defect Passivation: The carboxyl group selectively coordinates with under-coordinated lead sites at perovskite surfaces and grain boundaries, directly passivating lead dangling bonds—among the most detrimental non-radiative recombination centers in perovskite thin films.
  • Dual-Functional Architecture: Ammonium and Carboxyl Synergy: The simultaneous presence of ammonium and carboxyl groups enables complementary passivation of both cationic (lead) and anionic (iodine vacancy) defects, delivering comprehensive defect management through a single precursor molecule.
  • Flexible Alkyl Chain Stress Relief for Film Quality Enhancement: The five-carbon alkyl spacer between functional groups provides mechanical flexibility that relieves perovskite thin film stress, improves film formation quality, and reduces cracking during thermal cycling for enhanced device durability.
  • Enhanced Humidity and Thermal Stability: The combined effects of lead site coordination, defect passivation, and stress relief contribute to significantly improved device stability under both humid ambient conditions and prolonged thermal stress.

APPLICATION SCOPE: Carboxyl-functionalized defect passivation agent for high-efficiency perovskite solar cells. Lead dangling bond and iodine vacancy passivation precursor for reducing non-radiative recombination losses. Film stress relief and morphology improvement additive for enhanced perovskite thin film quality. Humidity and thermal stability enhancement agent for perovskite optoelectronic devices. Compatible with spin-coating and precursor co-blending deposition protocols. Supports perovskite solar cell, photodetector, and light-emitting device defect passivation research in university and research institute laboratories.
PACKAGING: This listing is for the 5 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 5-ammoniumvaleric acid 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: 5-Ammoniumvaleric acid 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. Store in a light-protected, moisture-free environment; do not store together with strong oxidizing agents or strong acids. 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 and compromising carboxyl group reactivity. For detailed safety and handling information, consult the Safety Data Sheet prior to use.
TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official quotations.
EMAIL: inquiry@atomfair.com
Manufacturer: Atomfair LLC
Brand: ATOMFAIR®

5-Ammoniumvaleric acid iodide is hygroscopic and light-sensitive, requiring immediate transfer to a desiccated, light-protected environment after opening. Long-term storage under inert atmosphere (N₂ glovebox with H₂O < 1 ppm, O₂ < 1 ppm) is recommended to prevent deliquescence and hydrolysis.

  • Moisture Sensitivity: Exposure to atmospheric moisture causes deliquescence and hydrolysis, irreversibly degrading precursor stoichiometry and compromising carboxyl group reactivity.
  • Light Sensitivity: The compound must be stored in light-protective packaging to prevent photodegradation.
  • Incompatible Materials: Do not store together with strong oxidizing agents or strong acids.

This procedure describes the safe handling and storage of 5-ammoniumvaleric acid iodide to maintain material integrity. All steps must be performed under inert atmosphere conditions to prevent moisture and light exposure.

Required Equipment: Nitrogen-filled glovebox (H₂O < 1 ppm, O₂ < 1 ppm), Light-protective storage container, Protective gloves

  1. Transfer to Glovebox
    Transfer the sealed package immediately into a nitrogen-filled glovebox with H₂O < 1 ppm and O₂ < 1 ppm before opening.
  2. Open Package
    Open the light-protective packaging inside the glovebox under low-light conditions to minimize photodegradation risk.
  3. Weigh Powder
    Weigh the required amount of white solid powder inside the glovebox using a clean, dry spatula and container.
  4. Seal Container
    Tighten the container cap immediately after each use to prevent moisture ingress from ambient air.
  5. Store Long-Term
    Store the sealed container in a light-protected, desiccated environment within the glovebox for long-term storage.

How does the dual-functional ammonium and carboxyl architecture of 5-AVAI compare to single-functional passivation agents in terms of performance trade-offs?

The dual-functional architecture enables complementary passivation of both lead dangling bonds via carboxyl coordination and iodine vacancies via ammonium interaction, providing comprehensive defect management in a single molecule. This avoids the trade-off of using separate passivation agents that may compete or require complex optimization. The source emphasizes that this synergy improves carrier lifetime and device stability, but the exact performance improvement relative to single-functional agents depends on the specific perovskite system.

Can 5-AVAI be used in perovskite precursors with solvents other than DMF and DMSO?

The source states that 5-AVAI is freely soluble in DMF, DMSO, and polar organic solvents. While DMF and DMSO are explicitly listed, solubility in other polar solvents such as NMP or GBL may be possible but is not confirmed in the source. For compatibility with non-polar solvents, the compound is unlikely to dissolve. Researchers should test solubility in their specific solvent system before use.

What storage infrastructure is required to prevent degradation of 5-AVAI?

The source specifies strict storage conditions: light-protected, dry, sealed, at room temperature, with long-term storage in a nitrogen glovebox recommended (H₂O < 1 ppm, O₂ < 1 ppm). The compound is hygroscopic and light-sensitive; exposure to atmospheric moisture causes deliquescence and hydrolysis, irreversibly degrading stoichiometry and reactivity. Immediate transfer to a desiccated, light-protected environment after opening is mandatory.

5-AVAI provides dual-functional defect passivation via carboxyl-lead coordination and ammonium-iodine vacancy compensation, but requires strict inert-atmosphere storage to prevent moisture-induced deliquescence and loss of reactivity.

Positive

  • Carboxyl-lead coordination passivation: The carboxyl group selectively coordinates with under-coordinated lead sites at perovskite surfaces and grain boundaries, directly passivating lead dangling bonds that are among the most detrimental non-radiative recombination centers.
  • Dual-functional ammonium and carboxyl synergy: Simultaneous ammonium and carboxyl groups enable complementary passivation of both cationic (lead) and anionic (iodine vacancy) defects, delivering comprehensive defect management through a single precursor molecule.

Trade-offs

  • Hygroscopic and light-sensitive storage: The compound is hygroscopic and light-sensitive; exposure to atmospheric moisture causes deliquescence and hydrolysis, irreversibly degrading precursor stoichiometry and carboxyl group reactivity.
  • Requires inert-atmosphere glovebox handling: Long-term storage and powder weighing require a nitrogen-filled glovebox (H₂O < 1 ppm, O₂ < 1 ppm) to maintain material integrity; immediate transfer to desiccated, light-protected environment is necessary after each use.

Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.

To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.

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