Luminescence techniques and characterization of the morphology of polymer latices. 1. Fluorescence quenching studies upon labelled acrylic dispersions

Soutar, Ian; Swanson, Linda; Annable, Tom; Padget, J. C.; Satgurunathan, R.

doi:10.1002/pi.1962

Cited by 4 publications

(15 citation statements)

References 32 publications

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“…Details of the syntheses and/or purification of the monomers acenaphthylene (ACE), 9-anthrylmethyl methacrylate (AMMA), n-butyl methacrylate (BMA), 1-naphthylmethyl methacrylate (NMMA), 9-phenanthrylmethyl methacrylate (PhMMA) and 1-vinylnaphthalene (VN) have been published in the first paper of this series [17]. The structures of the labels can be found in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…The need for such high dilutions, prompted by the requirement of avoidance of "inner filter" effects, has been described in an earlier publication [17].…”

Section: Spectroscopic Measurementsmentioning

confidence: 94%

“…Five labeled latex dispersions were prepared in which BMA was copolymerized with each of the fluorescent monomers (at 1 wt%) via a two-stage seeded emulsion polymerization, as previously described [17]. The resultant latices contained ca.…”

Section: Methodsmentioning

confidence: 99%

“…The resultant latices contained ca. 35% by weight total solids and particles of 80 (±10) nm diameter as determined by photon correlation spectrometry (Coulter N4S autosizer) [17].…”

Section: Methodsmentioning

confidence: 99%

“…In a previous publication [17], we reported upon our attempts to use the quenching of the luminescence from both fluorescent labels (incorporated, through copolymerization, during latex formation) and probes (fluorescent guests, solubilized in preformed latices) by an aqueous-borne quencher (nitromethane) to provide information regarding the morphology of polymeric latices of importance to coatings technology. It was concluded that such quenching experiments could provide a "broad-brush picture," at best, of colloid morphology: it appeared that fluorescent monomers, incorporated during emulsion copolymerization with n-butyl methacrylate, can influence the nature of the microdomain that they will ultimately occupy, as a label of the acrylic particle.…”

Section: Introductionmentioning

confidence: 99%

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Luminescence techniques and characterization of the morphology of polymer latices

Soutar¹,

Swanson²,

Annable³

et al. 2006

Journal of Colloid and Interface Science

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Section: Methodsmentioning

confidence: 99%

“…The need for such high dilutions, prompted by the requirement of avoidance of "inner filter" effects, has been described in an earlier publication [17].…”

Section: Spectroscopic Measurementsmentioning

confidence: 94%

Section: Methodsmentioning

confidence: 99%

“…The resultant latices contained ca. 35% by weight total solids and particles of 80 (±10) nm diameter as determined by photon correlation spectrometry (Coulter N4S autosizer) [17].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Luminescence techniques and characterization of the morphology of polymer latices

Soutar¹,

Swanson²,

Annable³

et al. 2006

Journal of Colloid and Interface Science

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Fluorescence Quenching upon Binding of Copper Ions in Dye‐Doped and Ligand‐Capped Polymer Nanoparticles: A Simple Way to Probe the Dye Accessibility in Nano‐Sized Templates

Gouanvé

Schuster

Allard

et al. 2007

Adv Funct Materials

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The synthesis and properties of well‐defined core–shell type fluorescent metal‐chelating polymer nanoparticles NP, in the 15 nm diameter range, with a fluorophore (9,10‐diphenylanthracene: DPA) entrapped in the particle core and a selective ligand (1,4,8,11‐tetraazacyclotetradecane: Cyclam), grafted onto the surface are presented. NPs with different number of dye‐per‐particle are readily obtained by entrapment of the fluorophore within the polymer core. The ligand‐coated NPs exhibit a high affinity for Cu2+ ions in aqueous solution and quenching of the DPA fluorescence is observed upon binding of copper. The quenching of fluorescence arises through energy transfer (FRET) from the dye to the copper‐cyclam complexes that form at the NP surface with an operating distance (d) in the 2 nm range. A simple core–shell model accounts for the steady‐state and time‐resolved fluorescence titration experiments: dye molecules located in the outer sphere (thickness d) of the NPs are quenched while the fluorescence of dyes embedded more deeply is not affected by the binding of copper ions. The observed high quenching efficiency (60–65 %), which is tightly correlated to the volumic and microstructural features of the NPs, shed light on the enhanced accessibility inherent in nano‐sized templates. The response towards different metal ions was investigated and this confirmed the selectivity of the nanoparticle template‐assembled sensor for cupric ions.

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Time‐resolved luminescence anisotropy studies of the relaxation behaviour of polymers. 2. On the intramolecular mobility of poly(butyl methacrylate) in dilute solution

Soutar¹,

Swanson²

2005

Polymer International

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Time-resolved anisotropy measurements (TRAMS) have been used to study the relaxation behaviour of poly(butyl methacrylate) (PBMA) in dilute solution both in toluene and dichloromethane. Various fluorescent labels (residues from copolymerisation of BMA with ca 0.3 mol% of acenaphthylene (ACE), 1-vinylnaphthalene (VN), 1-naphthylmethyl methacrylate, 9-phenyanthrylmethyl methacrylate, and 9-anthrylmethyl methacrylate (AMMA)) were used. It was found that, as expected, ACE and VN provided information on the segmental motion of PBMA. The fluorescence anisotropies of the various ester labels reflected the influence of motion, independent of that of the PBMA backbone, upon the observed relaxation behaviour. The motion of AMMA, in particular, could be resolved, with confidence, into components corresponding to segmental relaxation of both the polymer and ester group motion. Clearly, in this system, motion of the labelled ester is not fully cooperative with that of the polymer backbone, even at the high test frequencies to which these fluorescence measurements correspond.

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Luminescence techniques and characterization of the morphology of polymer latices. 1. Fluorescence quenching studies upon labelled acrylic dispersions

Cited by 4 publications

References 32 publications

Luminescence techniques and characterization of the morphology of polymer latices

Luminescence techniques and characterization of the morphology of polymer latices

Fluorescence Quenching upon Binding of Copper Ions in Dye‐Doped and Ligand‐Capped Polymer Nanoparticles: A Simple Way to Probe the Dye Accessibility in Nano‐Sized Templates

Time‐resolved luminescence anisotropy studies of the relaxation behaviour of polymers. 2. On the intramolecular mobility of poly(butyl methacrylate) in dilute solution

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