PMID- 29756990
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180830
LR  - 20180830
IS  - 1943-3530 (Electronic)
IS  - 0003-7028 (Linking)
VI  - 72
IP  - 9
DP  - 2018 Sep
TI  - Dynamic Aggregation of Poly-N-Isopropylacrylamide Characterized Using 
      Second-Order Scattering.
PG  - 1341-1348
LID - 10.1177/0003702818778601 [doi]
AB  - A second-order scattering (SOS) method is presented for the characterization of 
      aqueous particle suspensions undergoing aggregation. Scattering intensities are 
      measured at 90 degrees  by a standard fluorimeter and referenced against dynamic light 
      scattering (DLS) measurements to determine particle size increase in a 
      metal-promoted aggregation process for 0.05 mg/mL aqueous 
      poly-N-isopropylacrylamide (PNIPAm), MW  approximately 10 k g/mol. Particle size increases 
      monotonically from 30 nm to 210 nm at temperature 308 K. A further validation of 
      the SOS method was performed using monodisperse polystyrene reference particles 
      sized at 52 nm, 101 nm, 151 nm, and 206 nm, which demonstrated the technique's 
      accuracy to within 6% and its versatility with respect to sample composition. The 
      technique is ideal for monitoring colloidal stability and macromolecular assembly 
      and it can be performed at lower concentrations than are typically used in DLS.
FAU - Fulton, Luke A
AU  - Fulton LA
AD  - 1 Department of Chemistry, University of New Hampshire, Durham, NH, USA.
FAU - Zhang, Pei
AU  - Zhang P
AD  - 2 Materials Science Program, University of New Hampshire, Durham, NH, USA.
FAU - Seitz, W Rudolf
AU  - Seitz WR
AD  - 1 Department of Chemistry, University of New Hampshire, Durham, NH, USA.
FAU - Tsavalas, John G
AU  - Tsavalas JG
AD  - 1 Department of Chemistry, University of New Hampshire, Durham, NH, USA.
AD  - 2 Materials Science Program, University of New Hampshire, Durham, NH, USA.
FAU - Planalp, Roy P
AU  - Planalp RP
AUID- ORCID: 0000-0001-5673-8694
AD  - 1 Department of Chemistry, University of New Hampshire, Durham, NH, USA.
LA  - eng
PT  - Journal Article
DEP - 20180601
PL  - United States
TA  - Appl Spectrosc
JT  - Applied spectroscopy
JID - 0372406
OTO - NOTNLM
OT  - Particle sizing
OT  - SOS
OT  - aggregation
OT  - nanoparticle
OT  - poly-N-isopropylacrylamide
OT  - second-order scattering
EDAT- 2018/05/15 06:00
MHDA- 2018/05/15 06:01
CRDT- 2018/05/15 06:00
PHST- 2018/05/15 06:00 [pubmed]
PHST- 2018/05/15 06:01 [medline]
PHST- 2018/05/15 06:00 [entrez]
AID - 10.1177/0003702818778601 [doi]
PST - ppublish
SO  - Appl Spectrosc. 2018 Sep;72(9):1341-1348. doi: 10.1177/0003702818778601. Epub 
      2018 Jun 1.