Supramolecular ensemble of a TICT-AIEE active pyrazine derivative and CuO NPs: A potential photocatalytic system for sonogashira couplings

Harnimarta Deol, Subhamay Pramanik, Manoj Kumar, Imran A. Khan, Vandana Bhalla

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

The donor-acceptor system 4 having pyrazine scaffold as an acceptor moiety coupled to donor amino groups through rotatable phenyl rings has been synthesized, which formed aggregates in aqueous media, exhibited copper induced restriction to intramolecular rotation, and served as a "not quenched" probe for the detection of copper(II) ions. During this process, the aggregates of derivative 4 acted as reactors and stabilizers for the generation of CuO NPs and themselves became oxidized to form polyamine derivative 6. Interestingly, the oxidized species 6 in combination with copper oxide nanoparticles served as light-harvesting antennas and exhibited excellent photocatalytic efficiency in Sonogashira coupling under mild and eco-friendly conditions (room temperature, aqueous media, aerial conditions, and visible light irradiation).

Original languageEnglish
Pages (from-to)3771-3783
Number of pages13
JournalACS Catalysis
Volume6
Issue number6
DOIs
StatePublished - Jun 3 2016
Externally publishedYes

Funding

V.B. is thankful to the SERB, New Delhi, India (ref. no. EMR/ 2014/000149), for financial support. We are thankful to Mr. Ravinder Singh for the TEM study. We are also thankful to the UGC (New Delhi) for the ''University with Potential for Excellence'' (UPE) project. H.D. is thankful to the UGC-BSR (New Delhi) for a fellowship. S.P. is thankful to the UGC (New Delhi) for a Senior Research Fellowship (SRF).

Keywords

  • AIEE
  • CuO NPs
  • Sonogashira cross-coupling
  • TICT
  • photocatalyst
  • pyrazine

Fingerprint

Dive into the research topics of 'Supramolecular ensemble of a TICT-AIEE active pyrazine derivative and CuO NPs: A potential photocatalytic system for sonogashira couplings'. Together they form a unique fingerprint.

Cite this