SPECTROSCOPIC STUDY OF 1,3-SUBSTITUTED SQUARIC ACID DERIVATIVES AND ITS DIMER,AGGREGATE FORMATION

doi:10.7517/j.issn.1674-0475.1995.03.193

Abstract

Abstract: The compounds 1,3-bis(4-dimethyaminopheny1)-2,4-dihydroxy-dihydroxide cy-clobutenediylium bis(inner salt)[DMCS]and 1,3-bis(4-dihexadecylaminopheny1)-2,4-di-hydroxy-dihydroxide cyclobutenediylium bis(inner salt)[DHCS]were synthesized.The photophysical behaviors of DMCS and DHCS in different solvents were studied and their differences of dipole moment between ground state and excited state were calculated.Dimer ofDMCS in CTAB and aggregate of DHCS in dioxane-water were investigated and criticalaggegation composition(C_Ψ)and critical aggregation concentration(C_A)of DHCS weremeasured.

Key words: substituted squaric acid derivative, dimer, aggregate

ZHOU XIN, ZHANG BAO-WEN, CAO YI. SPECTROSCOPIC STUDY OF 1,3-SUBSTITUTED SQUARIC ACID DERIVATIVES AND ITS DIMER,AGGREGATE FORMATION[J]. Imaging Science and Photochemistry, 1995, 13(3): 193-199.

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SPECTROSCOPIC STUDY OF 1,3-SUBSTITUTED SQUARIC ACID DERIVATIVES AND ITS DIMER,AGGREGATE FORMATION

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