2026-10-10T01:55:13Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34032639 2026-09-30T13:34:49Z category_1 category_4 category_15 category_272 category_873 category_39 category_45 portal_63 item_type_6 month_year_09_2026

Substituent Size Effects on the Photophysics of 1‑Aryloxy-perylene Bisimide Monomers and Aggregates: A Bay-Substitution Study Andrés R. Urdaneta M (25144179) Leandro D. Mena (13448354) Gustavo A. Pino (1325448) Liliana B. Jimenez (5362217) Biophysics Biochemistry Neuroscience Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Ecology Sociology results led us reference unsubstituted homologue main variables considered substituent hinders self aryloxy group proved resulting aggregates exhibit perylene bisimide monomers 1 ‑ aryloxy substituent size effects aryloxy substituent perylene bisimides aryloxy groups type signature study explores spectral features presented herein photophysical features optimal strategy detailed discussion concentration dependence analytical concentration aggregation equilibria aggregate formation This study explores the effects of 1-substitution of perylene bisimides (PBIs) with aryloxy groups on their photophysical features and aggregation equilibria. The main variables considered for this purpose were the size of the aryloxy substituent, the solvent, and the analytical concentration. In all cases, aggregate formation was monitored by observing the concentration dependence of the spectral features. Our results led us to conclude that the resulting aggregates exhibit an H-type signature and that the substituent hinders self-assembly. Compared to the reference unsubstituted homologue, the insertion of an aryloxy group proved to be an optimal strategy for modulating the photophysical features of both monomers and aggregates. A detailed discussion is presented herein. 2026-09-30T00:00:00Z Text Journal contribution 10.1021/acs.jpca.6c05397.s001 https://figshare.com/articles/journal_contribution/Substituent_Size_Effects_on_the_Photophysics_of_1_Aryloxy-perylene_Bisimide_Monomers_and_Aggregates_A_Bay-Substitution_Study/34032639 CC BY-NC 4.0