1D Hybrid Semiconductor Silver 2,6-Difluorophenylselenolate.

Area of Science:

• Materials Science
• Solid-State Physics
• Organic-Inorganic Chemistry

Background:

• Organic-inorganic hybrid materials offer unique properties for low-dimensional structures.
• Metal-organic chalcogenolates are a class of hybrid semiconductors with tunable characteristics.

Purpose of the Study:

• To synthesize and characterize a novel one-dimensional (1D) emissive semiconductor.
• To investigate the structural and photophysical properties of silver 2,6-difluorophenylselenolate (AgSePhF2(2,6)).

Main Methods:

• Chemical synthesis of AgSePhF2(2,6).
• X-ray crystallography for structural determination.
• Density functional theory (DFT) calculations for electronic band structure analysis.
• Photoluminescence spectroscopy (time-resolved and temperature-dependent) to study optical properties.

Main Results:

• AgSePhF2(2,6) was synthesized as a chemically robust, yellow-emissive 1D semiconductor.
• Fluorine substitution induced a structural transition from 2D to 1D.
• DFT calculations showed dispersive bands along the 1D axis.
• Photoluminescence exhibited prompt (110 ps) and delayed (36 ns) decay components.
• Exciton binding energy was determined to be approximately 170 meV.

Conclusions:

• The discovery of emissive 1D silver organoselenolate expands the family of metal-organic chalcogenolates.
• Structural modification via fluorination is a viable strategy for tuning dimensionality and properties.
• AgSePhF2(2,6) serves as a model system for understanding light-matter interactions in 1D hybrid materials.