# Title of Dataset: --- Efficient Creation and Morphological Analysis of ABC Triblock Terpolymer Libraries Data file names are labeled as the following: Manuscript Figure Number_Sample Name_Characterization Technique ## Description of the Data and file structure Data is from the following analytical characterization techniques: Nuclear Magnetic Resonance Spectroscopy: Solution state 1H nuclear magnetic resonance (NMR) spectra were recorded on a Varian 600 MHz spectrometer. Chemical shifts (δ) are reported in ppm relative to residual protio-solvent in CDCl3 (7.26 ppm). Data is shown as x: chemical shift (ppm) and y: intensity (a.u.). Size Exclusion Chromatography: Size-exclusion chromatography (SEC) was conducted on a Waters Alliance HPLC System, 2690 Separation Module using chloroform with 0.25% triethylamine as the eluent with a flow rate of 0.35 mL/min. Refractive index traces from a Waters 2410 Differential Refractometer detector were used for estimates of the molar mass and dispersity relative to linear polystyrene standards with a chloroform mobile phase. Data is shown as x: retention time (min) and y: differential refractive index intensity (a.u.). Small Angle X-Ray Scattering: SAXS measurements of bulk samples were conducted using a custom-built SAXS diffractometer at the Materials Research Laboratory (MRL) X-ray facility (University of California, Santa Barbara). For these experiments, 1.54 Å Cu Kα X-rays were generated using a Genix 50 W X-ray microsource (50 μm micro-focus) equipped with FOX2D collimating multilayer optics (Xenocs, France) and high efficiency scatterless single crystal/metal hybrid slits. Data is shown as x: scattering q vector (A-1), y: intensity (a.u.), and z: error. Differential Scanning Calorimetry: Differential scanning calorimetry (DSC) was performed using a TA Instruments DSC Q2000 from –90 to 55 °C at a heating/cooling rate of 10 °C/min using 3–5 mg of sample in a sealed Tzero aluminum pan. Data is shown as x: time (min), y: temperature (ºC), and z: heat flow (W/g). ## Sharing/access Information Links to other publicly accessible locations of the data: Data is published as a peer reviewed article in Macromolecules here: https://pubs.acs.org/doi/full/10.1021/acs.macromol.2c01480 Was data derived from another source? No