Correction to Direct Evidence of Polar Ordering and Investigation on

Addition/Correction Cite This: Macromolecules XXXX, XXX, XXX−XXX

Correction to Direct Evidence of Polar Ordering and Investigation on Cythophilic Properties of Pyroelectrified Polymer Films by Optical Second Harmonic Generation Analysis Stefano Lettieri,* Romina Rega, Deborah K. Pallotti, Oriella Gennari, Laura Mecozzi, Pasqualino Maddalena, Pietro Ferraro, and Simonetta Grilli Macromolecules 2017, 50 (19), 7666−7671. DOI: 10.1021/acs.macromol.7b00794 The first lines of the Introduction, starting from “Some dielectric materials” and ending with “emerging biotechnology applications.3,4”, should be replaced by the following: Exposing nonconductive materials to intense electric fields can in several cases induce a temporary or permanent polarization, via alignment of polarizable units (e.g., molecular poling) or via localization of excess surface charges.1,2 A typical case is represented by ferroelectric crystals, characterized by the possibility of generating and reversing a permanent polarization through an externally applied electric field. Such a switchable polarization is at the basis of a variety of devices, whose applications include sensors, actuators, data storage, and emerging biotechnology applications.2−4 Reference 1 should be replaced by the following: (1) Fu, C.; Savino, K.; Gabrys, P.; Zeng, A.; Guan, B.; Olvera, D.; Wang, C.; Song, B.; Awad, H.; Gao, Y.; et al. Hydroxyapatite Thin Films with Giant Electrical Polarization. Chem. Mater. 2015, 27 (4), 1164−1171.

© XXXX American Chemical Society

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DOI: 10.1021/acs.macromol.8b00722 Macromolecules XXXX, XXX, XXX−XXX