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Multichromophoric Organic Molecules Encapsulated in Polymer Nanoparticles for Artificial Light Harvesting
Author(s) -
Bhattacharyya Santanu,
Jana Bikash,
Patra Amitava
Publication year - 2015
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201402723
Subject(s) - polymer , nanoparticle , materials science , antenna effect , molar absorptivity , molecule , quantum yield , nanotechnology , nile red , photochemistry , chemical engineering , luminescence , optoelectronics , chemistry , fluorescence , organic chemistry , optics , physics , engineering , composite material
Abstract We designed a self‐assembled multichromophoric organic molecular arrangement inside polymer nanoparticles for light‐harvesting antenna materials. The self‐assembled molecular arrangement of quaterthiophene molecules was found to be an efficient light‐absorbing antenna material, followed by energy transfer to Nile red (NR) dye molecules, which was confined in polymer nanoparticles. The efficiency of the antenna effect was found to be 3.2 and the effective molar extinction coefficient of acceptor dye molecules was found to be enhanced, which indicates an efficient light‐harvesting system. Based on this energy‐transfer process, tunable photo emission and white light emission has been generated with 14 % quantum yield. Such self‐assembled oligothiophene–NR systems encapsulated in polymer nanoparticles may open up new possibilities for fabrication of artificial light harvesting system.