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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Photoluminescence emission spectra of (a) anti-B18H22 and (b) 3,3′,4,4′-Et4-anti-B18H18 in solutions, (c,d) are their normalized form. Excitation wavelength λexc = 340 nm for all samples.