Synthesis and self-assembly of tetraphenylethene and biphenyl based AIE-active triazoles:
Wang Zhang Yuan, Faisal Mahtab, Yongyang Gong, Zhen-Qiang Yu, Ping Lu, Youhong Tang, Jacky W. Y. Lam, Caizhen Zhu and Ben Zhong Tang, J. Mater. Chem., 2012, 22, 10472-10479.
Aggregation-caused quenching effects are often encountered when luminophores are condensed and aggregated. This hot paper reports a new family of luminophors which can be easily fabricated into high efficiency fluorescent helical nanofibers that show aggregation-induced emission. The biphenyl and TPE-containing luminogens are practically nonluminescent in solution, but become highly fluorescent when aggregated as nanosuspensions, solid powders, or thin films.
Photonic anti-counterfeiting using structural colors derived from magnetic-responsive photonic crystals with double photonic bandgap heterostructures:
Haibo Hu , Qian-Wang Chen , Jian Tang , Xian-Yi Hu and Xu-Hui Zhou, J. Mater. Chem., 2012, 22, 11048-11053.
A simple and low-cost method to fabricate photonic crystals with double photonic band-gap hetero-structures is reported by Chinese scientists. These photonic crystals could be suitable for use in anti-counterfeiting measures as they are more difficult to imitate than chemical dyes and pigments. Using a magnetic-induced self-assembly technique the team were able to create a range of structural colours.
Preparation of Pickering emulsions and colloidosomes using either a glycerol-functionalised silica sol or core–shell polymer/silica nanocomposite particles:
Lee A. Fielding and Steven P. Armes, J. Mater. Chem., 2012, 22, 11235-11244.
Microcapsules with shells constructed from colloidal particles have been widely reported; however, there are few reports on the formation of stable colloidosomes using solely nano-sized silica or polymer/silica nanocomposite particles using cross-linking chemistry. In this hot paper a glycerol-functionalised colloidal silica sol and core–shell polymer/silica nanocomposite particles are used to prepare oil-in-water Pickering emulsions.