Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 28, Issue 4, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201705141
Keywords
aqueous solution; cucurbit[8]uril; cyanostilbene; light-harvesting systems; supramolecular polymers
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Funding
- National Research Foundation of Korea (NRF) - Korean government (MSIP) [009-0081571[RIAM0417-20150013]]
- Spanish Ministerio de Economia y Competitividad (MINECO-FEDER project) [CTQ2014-58801]
- 'Severo Ochoa' Program for Centers of Excellence in RD [SEV-2015-0496]
- Comunidad de Madrid (Project Mad2D) [S2013/MIT-3007]
- Campus of International Excellence (CEI) UAM+CSIC
- EC via the COFUND program AMAROUT
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A novel system of light-harvesting supramolecular block copolymers (SBCPs) in water is demonstrated. To realize cucurbit[8] uril (CB[8])-based SBCPs generating artificial light-harvesting in water, finely color-tuned supramolecular homopolymers (SHPs) comprising CB[8] host and different cyanostilbene guests (named as B, G, Y, and R) emitting blue, green, yellow, and red fluorescence are first synthesized and characterized, respectively. Light-harvesting SBCPs with mixed guest emitters are then simply produced by mixing blue and red-emitting SHPs according to the dynamic host-guest exchange interaction. The light-harvesting SBCPs show highly efficient energy transfer from B (donor D) to R (acceptor A) attributed to the D/A proximity and parallel orientation of their transition dipoles secured in the block copolymer structure. It is comprehensively shown that cyanostilbene/CB[8]-based fluorescent SBCPs represent a novel and fascinating class of eco-friendly artificial light-harvesting system.
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