Multiple aggregates from multiple polymorphs: structural and mechanistic insight into organic dye aggregates. Issue 29 (13th July 2022)

• Record Type: Journal Article
• Authors: Hogan, David T.; Sutherland, Todd C.
• Is Part Of: Nanoscale. Volume 14:Issue 29(2022)
• Page Start: 10327
• Page End: 10334
• Publication Date: 2022-07-13
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/d2nr03211b
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : This case study provides evidence for the appearance of multiple aggregation forms of a single organic dye, arising from its packing polymorphs in the solid state. Abstract : This case study provides evidence for the appearance of multiple aggregation forms of a single organic dye, arising from its packing polymorphs in the solid state. Each aggregate can be spectroscopically matched to one polymorph, acquiring nanoscopic structural information even in the absence of conventional H- or J-type aggregation spectral features. The conversion from one polymorphic aggregate to another supports the action of Ostwald's rule of stages in organic aggregates suspended in solution. Mechanistically, dye molecules from one aggregate dissociate then renucleate the more stable aggregate form, the first demonstration for an aggregation-induced emission-active organic dye.