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FT-IR analysis after introducing d-(+)-galactose on the surface of SWCNT-COCl. The stretching frequencies of ether and alcoholic linkages (C–O–C, –CH2–O) were seen around 1000∼1300 cm−1, the carbonyl of carboxylic acid at ∼1700 cm−1, and the –OH of carboxylic acid at ∼2500 and ∼3500 cm−1.
