Media type: E-Article Title: Front Cover: Fluorescent Molecular Rotors for Viscosity Sensors (Chem. Eur. J. 52/2018) Contributor: Lee, Seung‐Chul; Heo, Jeongyun; Woo, Hee Chul; Lee, Ji‐Ah; Seo, Young Hun; Lee, Chang‐Lyoul; Kim, Sehoon; Kwon, O‐Pil imprint: Wiley, 2018 Published in: Chemistry – A European Journal Language: English DOI: 10.1002/chem.201803968 ISSN: 0947-6539; 1521-3765 Keywords: General Chemistry ; Catalysis ; Organic Chemistry Origination: Footnote: