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A unique feature of this is that each shape and size has treatment bipolar depression different characteristic flowrate profile. The flowrate equation for the cone is presented in Eq. A vemlidy derivation of the flowrate equations for all of the targeted geometries can be found in SI Appendix, section 9.

Additionally, it is possible to predict the polymerization outcomes mendeleev communications journal. The use of a mathematical framework to predict the polymerization outcomes provides a first-principle methodology for proving precise shape and size control. Each shape and size has its own flowrate equation and its own characteristic prediction profiles.

A match between the experimental data and the predictions would validate a successful synthesis of a shaped bottlebrush, as no other macromolecule could have been synthesized.

To that end, a MATLAB code was written to numerically solve the design equations (SI Appendix, section 10) and generate the predictions. The crude polymer mixtures were analyzed by gel permeation chromatography (GPC) treatment bipolar depression NMR spectroscopy to determine the system outcomes (Fig.

First, the conversion of lactide and lactide buildup proceeded as predicted, which confirms that the macromonomers fed out of the syringe had the desired conical profile. The precision and flexibility of the methodology was further illustrated by synthesizing a treatment bipolar depression of conical-shaped bottlebrush polymers with different sizes, backbone lengths, and cone angles (Table 1 and SI Appendix, section 6).

Next, the methodology was expanded to ellipsoid and concave elliptical cone shapes (Table 1). This was achieved by simply implementing the corresponding flowrate equations. Treatment bipolar depression again, NMR and GPC were used to analyze the products of the reactions.

Narrow molecular weight distributions and strong agreement with predictions establish the exquisite control over shape and size. To further validate the methodology, atomic force microscopy (AFM) images of a conical-shaped polymer were collected. The size and shape observed are consistent with theoretical treatment bipolar depression of size (Fig. Predicted and experimental data for the synthesis of shape-controlled bottlebrush polymersAFM height maps for PLA cone hyper care on silicon surface.

The blue line in the plot is the theoretical shape profile for the imaged bottlebrush. The generality of the synthetic strategy was further showcased by expanding the chemical treatment bipolar depression of the process. The anionic ROP of cyclic siloxanes for the synthesis of PDMS brushes was used in place of the ROP of lactide (29).

A detailed kinetic analysis and chemical compatibility study was performed, which identified trimethylsilyl chloride (TMSCl) as an effective quenching agent (SI Appendix, section 7). This was achieved by cofeeding two macromonomers synthesis reaction mixtures, one for PLA and one for PDMS, into a single vessel of G3, boric acid, treatment bipolar depression TMSCl (Fig.

The precision of the synthesis of this complex molecular object exemplifies the chemical flexibility and shape control of the methodology.

Moreover, this one-step synthesis was completed in less than 2 h, using exclusively commercially available reagents. Synthesis of a compositional asymmetrical cone composed of PLA and PDMS arms.

This work establishes a scalable strategy to synthesize macromolecules with programmable shape, size, and composition. Reactor engineering principles and controlled polymerizations are leveraged to achieve the continuous control of brush length along the polymer backbone. This allowed for the programming of shape and size simply by changing treatment bipolar depression flowrate, as any particular flowrate profile will yield a bottlebrush polymer with a unique architecture.

Macromolecules with conical, ellipsoidal, and concave architectures were synthesized and a mathematical model was used to confirm that precise synthetic control was achieved. Treatment bipolar depression chemical versatility of the method was illustrated by the synthesis of a compositional asymmetric cone containing both asymmetric shape and compositional contrast within a single macromolecule.

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