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The examination of the adsorption of surfactants at the interface is regarded as one of the effective methods for comprehending the relation between their surface-active properties and their molecular structure.1-3 The kinetics of the adsorption at the air–water interface and the processes of the structure formation inside the adsorption layers of the amphiphilic dendrimers QPAMCm have been studied by dynamic surface/interface tension and surface dilational rheological method.The results showed that diverse adsorptive behavior occurred with different hydrophobic chain length.Especially for QPAMC8 and QPAMC16,unusual adsorption presents comparing to the traditional single or gemini surfactants,4,5 and micelles and vesicles coexist with increasing of concentration in the case of QPAMC16.