Comparative Study on the Effect of NaBr on the Interaction Between Alkyltrimethylammonium Bromide and β-Cyclodextrin

Yan Bai Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, P.R. China

Gui Ying Xu Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, P.R. ChinaCorrespondence[email protected]

Jin Yu Pang Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, P.R. China

Hong Yuan Sun School of Chemistry and Chemical Engineering, Shandong University, Jinan, P.R. China

Ai You Hao School of Chemistry and Chemical Engineering, Shandong University, Jinan, P.R. China

Xia Xin Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, P.R. China

Ming Qi Ao Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, P.R. China

Xiao Deng Yang Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, P.R. China

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Abstract

The effect of NaBr on the interaction between alkyltrimethylammonium bromide (CnTAB (n = 14 for TTAB and 16 for CTAB)) and ß-CD was studied by surface tension method. The first decrease in the γ_cmc of TTAB/ß-CD in the presence of NaBr mainly due to the elongated effective chain length of the hydrophobic part of the TTAB/ß-CD complexes; while the increase in the γ_cmc of both of the TTAB/ß-CD and CTAB/ß-CD in the presence of NaBr could be attributed to the close pack of CnTAB at the air/water interface.

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The authors gratefully acknowledge the financial support from the Natural Science Foundation (20873077).

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Comparative Study on the Effect of NaBr on the Interaction Between Alkyltrimethylammonium Bromide and β-Cyclodextrin

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Comparative Study on the Effect of NaBr on the Interaction Between Alkyltrimethylammonium Bromide and β-Cyclodextrin

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