Liu, Shaohua
Gordiichuk, Pavlo
Wu, Zhong-Shuai
Liu, Zhaoyang
Wei, Wei
Wagner, Manfred
Mohamed-Noriega, Nasser
Wu, Dongqing
Mai, Yiyong
Herrmann, Andreas
Müllen, Klaus
Feng, Xinliang
Article History
Received: 16 July 2015
Accepted: 2 October 2015
First Online: 18 November 2015
Competing interests
: The authors declare no competing financial interests.