TGA experiments were conducted at ambient total pressure using a TA Instruments TGA Q5000 instrument, except for the 0.1 °C/min isobars shown in Figures S5 and S6 , which were measured using a TA Instruments Discovery Classic TGA instrument, which has an equivalent furnace and gas flow design. For CO2 adsorption/desorption experiments, samples were activated under flowing N2 for 20–30 min until the mass stabilized; exact activation conditions for each diamine-appended material were determined by careful analysis of the dry N2 thermal decomposition profiles. After activation, the gas stream was switched to pure CO2, and samples were cooled using a ramp rate of 2 °C/min unless specified otherwise in the figure legends. Masses were uncorrected for buoyancy effects. Dry N2 decomposition experiments were carried out using a heating ramp rate of 1.5 °C/min unless specified otherwise in the figure legends.
Q5000 instrument
Manufactured by TA Instruments
Sourced in United States
The Q5000 is a thermogravimetric analyzer (TGA) instrument designed for thermal analysis. It is capable of measuring the change in mass of a sample as a function of temperature and/or time, under a controlled atmosphere.
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Lab products found in correlation
Jem 2100f, by Thermo Fisher Scientific (1 mentions)
Escalab 250xi spectrometer, by Thermo Fisher Scientific (1 mentions)
Zetasizer nano zs size analyzer, by Malvern Panalytical (1 mentions)
Quanta 200, by Thermo Fisher Scientific (1 mentions)
Nexus 670 spectrometer, by Thermo Fisher Scientific (1 mentions)
2 protocols using q5000 instrument
1
Thermogravimetric Analysis of Diamine-Appended Materials
2
Characterization of Engineered Lipid Nanoparticles
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MSNs, MSNs@lip-1, and MSNs@lip-2 were characterized by the following analyses. Scanning electron microscopy (SEM, Quanta 200, FEI, Eindhoven, The Netherlands) and transmission electron microscopy (TEM, JEM-2100F, FEI, JEOL, Tokyo, Japan) were used to examine the morphology of the nanoparticles. Fourier transform infrared spectrum (FTIR) was recorded using a Nexus 670 Spectrometer (Thermo-Nicolet, Madison, WI, USA) with a wavelength of 400 cm−1–4000 cm−1. An X-ray photoelectron spectrum (XPS) was obtained using an Escalab 250 Xi spectrometer (Thermo Scientific, Waltham, MA, USA), and the binding energy was calibrated against the O1s peak at 523 eV. Thermogravimetric analysis (TGA) was conducted on a Q5000 instrument (TA Instruments, New Castle, DE, USA) at a heating rate of 10 °C/min from 25 °C to 800 °C. Hydrodynamic diameter and Zeta potential were measured by a dynamic light scattering technique (DLS) using a Zetasizer Nano ZS size analyzer (Malvern Instruments, Malvern, UK) equipped with a 633 nm He-Ne laser.
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