Near-infrared (NIR) emissive metal complexes have shown potential applications in optical communication, chemosensors, bioimaging, and laser and organic light-emitting diodes (OLEDs) due to their structural tunability and luminescence stability. Among them, complexes with bridging ligands that exhibit unique emission behavior have attracted extensive interests in recent years. The target performance can be easily achieved by NIR light-emitting metal complexes with bridging ligands through molecular structure design. In this review, the luminescence mechanism and design strategies of NIR luminescent metal complexes with bridging ligands are described firstly, and then summarize the recent advance of NIR luminescent metal complexes with bridging ligands in the fields of electroluminescence and biosensing/bioimaging. Finally, the development trend of NIR luminescent metal complexes with bridging ligands are proposed, which shows an attractive prospect in the field of photophysical and photochemical materials.

This review summarizes the application progress of conducting redox polymers with energy storage capability for different types of rechargeable batteries.

Electrochemical methods are commonly used in the preparation of functional polymers on flexible conducting substrates to design and fabricate advanced electronic devices.

Polymerization strategy to integrate conjugated structures with rich redox-active units for lithium ion batteries has been rapidly adopted to realize highly efficient polymer cathodes, because polymerization can solve the poor...

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Lightweight mirror is a key part in image-stabilized day/night optoelectronic observe/aim system. It is made of special structure titanium alloy base with sintered layer of optical glass. To meet with the requirement to reduce weight, honeycomb structure is adopted on the titanium alloy substrate. The depth of the optical glass is very thin.Due to its special & complex structure, high index requirement on image-stabilized technology, technology efficiency is very low with traditional polishing, and the quality is not stable. The loop polishing machine characterized with its stressless machining, is a kind of plain polishing machine tool, which has unique advantage in plain polishing machining of high accuracy large size and extra thin, changeable optical elements. We adopt loop-polishing technology in large area lightweight mirror machining. After parts fine grinding, first we adopt traditional polishing technique to conform pre-polishing for parts, then perform stressless polishing in loop polishing machine. Via tests and batch production, it solves the technical problems such as facial contour control and surface quality of the large area lightweight mirror; its working efficiency is 3-5 times than the traditional polishing technology.Keywords： large area lightweight mirror loop-polishing machine facial contour surface quality CHARACTERISTICS AND PROCESSING OF LIGHTWEIGHT MIRRORLarge size mirror is always regarded in domestic optical field. High resolution optical systems are required in many fields such as space observation, weather forecast, military investigation, optoelectronic tracking precision guidance weapon technology. An important path to raise the optical resolution is to enlarge the aperture of the optical system which will cause the rapid increasing of the mirror weight. Since the weight increasing of the mirror, its weight distortion will give great effect to facial contour precision which is difficult to get high precision mirror. Thus the weight of the optical system is increased, the maneuverability of the optical instrument is dropped or the transportation launching cost is increased. So the key technology to be solved is the manufacturing of the lightweight mirror. Along with the development of the precision guidance technology, the requirement to the whole performance of the mirror is higher especially in quality. To reduce the weight of the whole mirror is the key to realize dual-direction independent stability.The lightweight mirror made with titanium alloy and glass sintered to composite structure breaks traditional combination structure sticked with glass and metal base. It guarantees the characteristics of titanium alloy good thermal stability and small detensity. The base back of the titanium alloy is made to honeycomb (hexagon), the glass to be conjuncted with it is only 0.3-0.6mm after working, thus the aim to reduce weight is reached.