Resonance Raman evidence for electron and hole defect asymmetry in the quasi-one-dimensional mixed-valence solid (Pt sup II (en) sub 2 )(Pt sup IV (en) sub 2 Cl sub 2 )(ClO sub 4 ) sub 4 (en = ethylenediamine)

Journal Article · · Chemistry of Materials; (USA)

OSTI ID:6712060

Donohoe, R J; Tait, C D; Swanson, B I ^[1]

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1. Los Alamos National Lab., NM (USA)

Resonance Raman (RR) spectroscopy of (Pt{sup II}(en){sub 2})(Pt{sup IV}(en){sub 2}Cl{sub 2})(ClO{sub 4}){sub 4} provides both electronic and vibrational information about intrinsic local gap defect states. Selective enhancement of weaker RR features when tuning through the A and B band defect absorptions below the charge-transfer band edge serves to resolve the two absorption maxima into five distinct electronic transitions. The observed defect vibrational frequencies include a peak at 263 cm{sup {minus}1}, which is enhanced in two of the ranges, and a peak at 287 cm{sup {minus}1}, enhanced in two other ranges. Together with predictions from theoretical calculations and a previous study of photoinduced defects, the results herein allow assignment of the two electronic transitions associated with enhancement of the 263-cm{sup {minus}1} band to electron polaron defect gap-to-gap and gap-to-band transitions and the two associated with 287-cm{sup {minus}1} band to corresponding transitions due to hole polaron defects.

• OSTI ID: 6712060
• Journal Information: Chemistry of Materials; (USA), Vol. 2:3; ISSN 0897-4756
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
PLATINUM CHLORIDES
DEFECTS
DATA ANALYSIS
ELECTRONS
HOLES
MEASURING INSTRUMENTS
MEASURING METHODS
ORGANOMETALLIC COMPOUNDS
RAMAN SPECTROSCOPY
CHLORIDES
CHLORINE COMPOUNDS
ELEMENTARY PARTICLES
FERMIONS
HALIDES
HALOGEN COMPOUNDS
LASER SPECTROSCOPY
LEPTONS
ORGANIC COMPOUNDS
PLATINUM COMPOUNDS
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies