Molecular Motion of Phosphazene-Bound NLO Chromophores

The behavior of NLO groups linked to a polyphosphazene chain was studied by solid state NMR spectroscopy. A series of poly(organophosphazenes) was prepared and characterized. Variable-temperature solid state 13C NMR spectra indicated that the use of a longer spacer group between the polymer backbone...

Full description

Saved in:
Bibliographic Details
Main Authors: Allcock, Harry R, Cameron, Charles E, Skloss, Timothy W, Taylor-Meyers, Sharon, Wynne, Kenneth J
Format: Report
Language:English
Subjects:
Atomic and Molecular Physics and Spectroscopy
CHAINS
CHEMICAL BONDS
CHROMOPHORES
ELECTROOPTICS
Inorganic Chemistry
LINKAGES
MOLECULAR PROPERTIES
MOTION
NONLINEAR OPTICS
NUCLEAR MAGNETIC RESONANCE
Optics
Organic Chemistry
ORGANIC COMPOUNDS
PHOSPHAZENE
Polymer Chemistry
POLYMERS
POLYPHOSPHAZENE
QUENCHING
SIDES
SOLID STATE PHYSICS
SPACERS
SPECTROSCOPY
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The behavior of NLO groups linked to a polyphosphazene chain was studied by solid state NMR spectroscopy. A series of poly(organophosphazenes) was prepared and characterized. Variable-temperature solid state 13C NMR spectra indicated that the use of a longer spacer group between the polymer backbone and the aromatic portion of the NLO side group lowered the temperature at which chromophore motion is quenched. This implied that the use of such structures may accelerate the randomization of NLO side group orientation at ambient temperatures following poling. This behavior was mirrored in the solid state variable-temperature 31p NMR spectra, which suggested that side chain and polymer backbone may be coupled. jg