Tuning the Chain Helicity and Organizational Morphology of an l-Valine-Containing Polyacetylene by pH Change Li, Bing Shi ; Cheuk, Kevin K. L. ; Salhi, Fouad ; Lam, Jacky W. Y. ; Cha, John A. K. ; Xiao, Xudong ; Bai, Chunli ; Tang, Ben Zhong Abstract Publication: Nano Letters Pub Date: June 2001 DOI: 10.1021/nl015540o Bibcode: 2001NanoL...1..323L