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Light Harvesting and Amplification of Emission of Donor Perylene–Acceptor Perylene Aggregates in Aqueous Medium
Author(s) -
Sukul Pradip K.,
Datta Ayan,
Malik Sudip
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201304431
Subject(s) - perylene , acceptor , fluorescence , photochemistry , aqueous medium , aqueous solution , chemistry , rational design , materials science , nanotechnology , organic chemistry , optics , physics , condensed matter physics
Abstract With the aid of rational design, we have synthesized a pair of water‐soluble donor‐ and acceptor‐type twisted perylene bisimide units, which together form aggregates upon lowering the pH of the medium, providing bright yellow fluorescence. The light‐harvesting efficiency of the co‐assembled system can be tuned by controlling the ratio of donor to acceptor and 98.1 % efficiency has been achieved.