Probing the spatial distribution of fluorophores entering nanoscale pores in poly(pyrroleamine) films using neutron reflectivity

DOI

We wish to make specular NR measurements on fluorophore functionalization of amine-functionalized polypyrrole (PPy-NH2) films. The critical issue is film penetration of solution fluorophore. We explore two parallel sets of measurements, involving PPy-NH2 and PPy-FMOC: in the former case fluorophore uptake is solvent volume fraction limited, and in the latter case pre-hydrolysis of the FMOC protecting group creates additional free volume. The aims are determination of the rates and extents of penetration of two fluorophores of different molecular size. These fundamental studies underpin the extension from optical absorption to fluorescence imaging of polymer films that have considerable potential for a new type of latent fingerprint enhancement technology. The novel fluorescence mode offers greater sensitivity and enhanced wavelength-based imaging selectivity over the absorption mode.

Identifier
DOI https://doi.org/10.5286/ISIS.E.24090210
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24090210
Provenance
Creator Professor Robert Hillman; Professor Karl Ryder; Dr Rachel Sapstead; Ms Charlotte Beebee; Dr Emma Smith; Dr Virginia Ferreira; Dr Erik Watkins
Publisher ISIS Neutron and Muon Source
Publication Year 2016
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2013-03-18T08:38:37Z
Temporal Coverage End 2013-06-13T23:46:11Z