Carbon Letters

, Volume 29, Issue 6, pp 595–603 | Cite as

Fluorescent microspheres of zinc 1,2-dicarbomethoxy-1,2-dithiolate complex decorated with carbon nanotubes

  • Gouri Sankar Das
  • Sabyasachi Sarkar
  • Ruchi Aggarwal
  • Sumit Kumar Sonkar
  • Jun-Woo Park
  • Kumud Malika TripathiEmail author
  • TaeYoung KimEmail author
Original Article


A new discrete bis-dithiolene complex, [PPh4]2[Zn(DMED)2] (1; DMED = 1,2-dicarbomethoxy-1,2-dithiolate) with sulfur-based radical character was synthesized and structurally characterized. Complex 1 is stable and exhibits a square planar geometry around the zinc metal. 1 forms nanospheres through a one-pot water-induced self-assembly in a mixture of solvents (acetonitrile–water). These nanospheres were further decorated with water-soluble carbon nanotubes (wsCNTs) through hydrogen bonding between the peripheral –COOCH3 groups of 1 and surfacial carboxyl groups of wsCNTs to assemble into a spherical nanocomposite. The as-prepared nanocomposite showed fluorescence emissions in visible region due to the separation of energy states of the nanospheres assisted by wsCNTs, suggesting the future possibilities of these new materials for use in biomedical application.


Nanospheres Sulfur radical Self-assembly Nanocomposite Visible emissions 



S. S. acknowledges the support from SERB-DST for the Ramanna Fellowship and S.K.S. thanks CSIR [01(2854)/16/EMR-II] for funding. This work was also supported by the Gachon University Research Fund of 2018 (GCU-2018-0370).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interests.


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Copyright information

© Korean Carbon Society 2019

Authors and Affiliations

  1. 1.Department of BionanotechnologyGachon UniversitySeongnam-siKorea
  2. 2.Department of ChemistryIndian Institute of Engineering Science and Technology, ShibpurHowrahIndia
  3. 3.Department of ChemistryMalaviya National Institute of Technology, JaipurJaipurIndia
  4. 4.Next Generation Battery Research CenterKorea Electrotechnology Research InstituteChangwon-siKorea
  5. 5.Department of Materials Science and EngineeringGachon UniversitySeongnam-siKorea

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