Abstract:

In this study, continuous time dependent total intensity light scattering was used to investigate the processes that precede dopamine (DP) particle formation and to monitor the effects of kinetics of several reaction conditions such as change in temperature, pH, stirring concentration, use of potassium persulfate (KPS), and purging with oxygen and nitrogen. This dataset supports the publication: Wu, A., Sahiner, N., & Reed, W. F. (2019). Online monitoring of dopamine particle formation via continuous light scattering intensity measurement. European Polymer Journal, 112, 749–753. doi:10.1016/j.eurpolymj.2018.10.046

Suggested Citation:

Aide Wu, Nurettin Sahiner, Wayne F Reed. 2019. Dataset for: Online monitoring of dopamine particle formation via continuous light scattering intensity measurement. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/n7-smd8-rm34

Publications:

Wu, A., Sahiner, N., & Reed, W. F. (2019). Online monitoring of dopamine particle formation via continuous light scattering intensity measurement. European Polymer Journal, 112, 749–753. doi:10.1016/j.eurpolymj.2018.10.046

Purpose:

To monitor nanoparticle formation and to report the effects on the kinetics of various reaction conditions by using continuous time dependent total intensity light scattering.

Data Parameters and Units:

Dataset includes 10 csv files and contains: T (^0^C), 1/T (K), Phase 1 period (s) no KPS no stir, Initial slope Phase 2 no KPS no stir, Dopamine:KPS, KPS:Dopamine, SQRT(Dopamine:KPS), Phase 1 period 2mg/ml, Phase 1 rate, Phase 1 period 4 mg/ml, Phase 2 slope 2 mg/ml, Time(s), 25C, 25C smooth, 30C, 30C no stir, 35C, 40C, 45C, 50C, 55C, 60C, 60C, smooth, Time(s), LS_2mg/ml Dopamine:KPS=2:1, T(^0^C), 1/T(K), time to particulation (s) no stir D/KPS=2, time to particulation (s) 200RPM D/KPS=2, Time(s), 25C-200rpm, 30C-200rpm, 30C 200rpm smooth, 35C-200rpm, 40C-200rpm, 45C-200rpm, 50C-200rpm, 55C-200rpm, 60C-200rpm, Time(s), 40C no KPS no stir, 40C no KPS no stir smooth, 50C no KPS no stir, 50C no KPS no stir smooth, 60C no KPS no stir, 60C no KPS no stir smooth, Time(s) Dopamine:KPS=4:1, Dopamine:KPS=2:1, Dopamine:KPS=1:1, Dopamine:KPS=1:2, Dopamine:KPS=1:4, Wavelength (nm), 0min, 30min, 60min, 90min, 120min, 150mn, 180min, 210min, 240min, 270min, 300min, 330min, 350.5min. Light Scattering (LS) Intensity (AU) and absorbance is dimensionless. These data were used to create figures in the associated publication (Wu et al., 2019). The excel file "Dopamine Control group (no KPA stir)" contains data used to plot figure 1, and the file “UV Dopamine data" contains data used to plot figure 2. Similarly, the excel files - “KPS varying at 2mgml dopamine", “Dopamine Control group (no KPA stir)”, and “Dopamine aggregation vs T” contain data used to plot figure 3; and the file "Phase 1 initial slopes" contains data used to plot figure 4 respectively.

Methods:

Reactions with dopamine solution were monitored under several conditions which include varying temperatures, dopamine concentrations, stirring, no stirring, purging with oxygen and nitrogen, and different ratios with potassium persulfate (KPS). Dopamine polymerization under these conditions was monitored via simultaneous multiple sample light scattering (SMSLS).

Instruments:

SMLS was monitored with an Argen instrument from Fluence Analytics (New Orleans).

Individual Files: