Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (6): 20220091.doi: 10.7503/cjcu20220091

• Organic Chemistry • Previous Articles     Next Articles

Synthesis and Topochemical Polymerization Study of Naphthalene/perylene Imides Substituted Diacetylene Derivatives

LIU Qingqing1,2, WANG Pu1,2, WANG Yongshuai1,2, ZHAO Man1, DONG Huanli1,2()   

  1. 1.Key Laboratory of Organic Solids,Beijing National Laboratory for Molecular Sciences,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China
    2.University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2022-02-15 Online:2022-06-10 Published:2022-04-04
  • Contact: DONG Huanli E-mail:dhl522@iccas.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(21875259);the Beijing National Laboratory for Molecular Sciences, China(BNLMS-CXXM-202012)

Abstract:

Naphthalene/perylene imide substituted terminal alkyne and iodide monomers were prepared by a five-step reaction. Two new symmetric diacetylene monomers, pale yellow powder 2-(2-ethylhexyl)-7-{4-[7-(2-ethylhexyl)-1,3,6,8-tetraoxo-1,2,3,3a,5a,6,7,8-octahydroisoquinolino[6,5,4-def]isoquinolin-2-yl]buta-1,3-diynyl}- 1,2,3,6,7,8-hexahydroisoquinolino[6,5,4-def]isoquinoline-1,3,6,8-tetraone(diNDI) and deep red powder 9-{4-[1,3,8,10-tetraoxo-9-(tricos-12-yl)-1,2,3,8,9,10-hexahydroisoquinolino[6',5',4':9,1,2]anthra[6,5,10-def]isoquinolin-2-yl]buta-1,3-diynyl}-2-(tricos-12-yl)-1,2,3,8,9,10-hexahydroisoquinolino[6',5',4':9,1,2]anthra[6,5,10-def]isoquinoline-1,3,8,10-tetraone(diPDI), were synthesized by the Sonagashira coupling reaction with yields up to 60% and 70%, respectively. Due to the strong electron-withdrawing of NDI and PDI side groups, they exhibited deeper lowest unoccupied molecular orbital energy levels of -3.80 and -3.70 eV, respectively. The single crystal data of diNDI showed that the intermolecular hydrogen bonding and π-π interaction of naphthalene imide units mediated the intermolecular assembly of diNDI, showing a layer packing model. The differential scanning calorimetry results indicated that diNDI polymerized in solid-state under heating. The changes in the UV-Vis absorption and in situ Raman spectra of diNDI under heating and 532 nm-10% laser irradiation condition indicated that diNDI microcrystals might react to form a distorted structure instead of a fully conjugated backbone that usually resulted from the regular 1,4-addition. The laser irradiation conditions were found to facilitate the polymerization reaction.

Key words: Diacetylene, Naphthalene/perylene imides side group, Single crystal structure, Topochemical polymerization

CLC Number: 

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