The Chemistry of Synthetic Dyes | ScienceDirect,The Chemistry of Synthetic Dyes and Pigments : H.A. Lubs,The Chemistry of Synthetic Dyes and Pigments. H. A. Lubs, Ed,Justus Liebigs Annalen Der Chemie, Volume 166 (English,Doubly Strapped Zwitterionic NIR‐I and NIR‐II Heptamethine