Ju Mei,†,‡,∥ Nelson L. C. Leung,†,‡,∥ Ryan T. K. Kwok,†,‡ Jacky W. Y. Lam,†,‡ and Ben Zhong Tang*,†,‡,§ †HKUST-Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China ‡Department of Chemistry, HKUST Jockey Club Institute for Advanced Study, Institute of Molecular Functional Materials, Division of Biomedical Engineering, State Key Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China Guangdong Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China

Aggregation-Induced Emission: Together We Shine, United We Soar!

This critical review will be of interest to the experts in porous solids (including catalysis), but also solid state chemists and physicists. It presents the state-of-the-art on hybrid porous solids, their advantages, their new routes of synthesis, the structural concepts useful for their ‘design’, aiming at reaching very large pores. Their dynamic properties and the possibility of predicting their structure are described. The large tunability of the pore size leads to unprecedented properties and applications. They concern adsorption of species, storage and delivery and the physical properties of the dense phases. (323 references)

Hybrid porous solids: past, present, future

Luminogenic materials with aggregation-induced emission (AIE) attributes have attracted much interest since the debut of the AIE concept in 2001. In this critical review, recent progress in the area of AIE research is summarized. Typical examples of AIE systems are discussed, from which their structure–property relationships are derived. Through mechanistic decipherment of the photophysical processes, structural design strategies for generating new AIE luminogens are developed. Technological, especially optoelectronic and biological, applications of the AIE systems are exemplified to illustrate how the novel AIE effect can be utilized for high-tech innovations (183 references).

Aggregation-induced emission

The field of chemical sensing is becoming ever more dependent upon novel materials. Polymers, crystals, glasses, particles, and nanostructures have made a profound impact and have endowed modern sensory systems with superior performance. Electronic polymers have emerged as one of the most important classes of transduction materials; they readily transform a chemical signal into an easily measured electrical or optical event. Although our group reviewed this field in 2000,1 the high levels of activity and the impact of these methods now justify a subsequent review as part of this special issue. In this review we restrict our discussions to purely fluorescence-based methods using conjugated polymers (CPs). We further confine our detailed coverage to articles published since our previous review and will only detail earlier research in this Introduction to illustrate fundamental concepts and terminology that underpin the recent literature.

Chemical sensors based on amplifying fluorescent conjugated polymers.

Aggregation-induced emission: phenomenon, mechanism and applications.

Polymer microspheres for controlled drug release

https://www.eng.buffalo.edu/Courses/ce435/MasaroZhu99.pdf

Physical models of diffusion for polymer solutions, gels and solids

The thermally induced phase separation of aqueous poly(N,N-diethylacrylamide) (PDEA) was studied by means of differential scanning calorimetry and UV−visible spectrophotometry. The polymer was show...

Thermosensitivity of Aqueous Solutions of Poly(N,N-diethylacrylamide)

Lower critical solution temperatures of N-substituted acrylamide copolymers in aqueous solutions

Natural compounds cholic acid and β-cyclodextrin are attached separately as pendant groups in a copolymer with N,N′-dimethylacrylamides. The formation of supramolecular hydrogels is induced by inclusion complex formation between cholic acid and β-cyclodextrin moieties as evidenced by rheological analysis and 1H NMR spectroscopy. Storage modulus of the hydrogel shows a maximum value when the molar ratio of cholic acid to β-cyclodextrin units is adjusted to 1:1. The concentration of the hydrogel can be as low as 5.5 wt %. Both shear-thickening and shear-thinning have been observed when the shear rate gradually increases from 0.01 to 100 s–1. The inclusion complexation renders the gel–sol process reversible under heating and cooling cycles. The self-healing of such hydrogels is observed and confirmed by step-strain rheological measurements. The dynamically reversible host–guest complexation provides reasonably good mechanical properties of the cross-linked polymer network. The natural origin of the constitue...

X. X. Zhu

Papers

Polymer microspheres for controlled drug release

Physical models of diffusion for polymer solutions, gels and solids

Thermosensitivity of Aqueous Solutions of Poly(N,N-diethylacrylamide)

Lower critical solution temperatures of N-substituted acrylamide copolymers in aqueous solutions

Self-Healing Supramolecular Hydrogel Made of Polymers Bearing Cholic Acid and β-Cyclodextrin Pendants