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Light Harvesting and Efficient Energy Transfer in Dendritic Systems: New Strategy for Functionalized Near‐Infrared BF 2 ‐Azadipyrromethenes
Author(s) -
Yuan Mingjian,
Yin Xiaodong,
Zheng Haiyan,
Ouyang Canbin,
Zuo Zicheng,
Liu Huibiao,
Li Yuliang
Publication year - 2009
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.200800391
Subject(s) - dendrimer , molar absorptivity , energy transfer , acceptor , infrared , excitation , materials science , photochemistry , near infrared spectroscopy , core (optical fiber) , energy harvesting , optoelectronics , chemistry , nanotechnology , energy (signal processing) , chemical physics , optics , polymer chemistry , physics , quantum mechanics , composite material , condensed matter physics
Abstract Bright funnels : A series of dendritic systems, which are capable of funneling energy from the periphery to the core, have been synthesized. The photophysical properties of dendrimers have been determined. Selective excitation of the donor leads to an efficient energy transfer (>90 %) to the acceptor. The approach provides a facile synthesis for the modification of near‐infrared BF 2 ‐Azadipyrromethenes.A series of dendritic systems, which are capable of funneling energy from the periphery to the core, have been synthesized. The photophysical properties of the dendrimers, generations 0–2, have been determined. The light‐harvesting ability of these compounds increases with increasing generation arising from the increase in molar extinction coefficient. Selective excitation of the donor leads to an efficient energy transfer (>90 %) to the acceptor. The approach provides a facile synthesis for modification of near‐infrared BF 2 ‐Azadipyrromethene.