Over the past 25 years or so there has been a revolution in the devel- mentoffunctionalpolymers. Whilemanypolymersascommoditiesrepresent huge markets, new materials with a high degree of functionality have been developed. Such specialty polymers play important roles in our day-to-day lives. The current volumes 213 and 214 of Advances in Polymer Science focus on photoresponsive polymers. In particular polymers that can either change the properties of a beam of light that passes through them or who change their properties in response to light. Volume 213 starts with an introd- tion to two-photon absorption by Rumi, Barlow, Wang, Perry, and Marder. In this chapter they develop the basic concepts of two-photon absorption, and describe structure property relationships for a variety of symmetrical and unsymmetrical molecules. The applications of these materials in 3D - crofabrication of polymers, metals, and oxide materials are detailed in the chapterentitled Two-PhotonAbsorberandTwo-PhotonInduced Chemistry contributed by the same group of authors. Then Bel?eld, Bondar, and Yao describe the molecules, dendrimers, oligomers, and polymers that can be - cited by two-photonabsorption and their application in processing materials with three-dimensional spatial control in their chapter entitled Two-Photon Absorbing Photonic Materials. Speci?cally they describe the development of symmetrical and polar conjugated materials for two-photon absorption and their use as photo-initiatorsfor3D microfabrication. Juodkazis,Mizeikis, and Misawaalsoexploremultiphotonprocessingofmaterials intheirchapter,and provide more focus on the processing aspects of these materials and discuss thestate-of-the-artinresolution.

Highest Impact Factor of all publications ranked by ISI within Polymer Science Short and concise reports on physics and chemistry of polymers, each written by the world renowned experts Still valid and useful after 5 or 10 years The electronic version is available free of charge for standing order customers at: springer.com/series/12/ Includes supplementary material: sn.pub/extras

Inhalt
Polymer Solar Cells.- Energy Harvesting in Synthetic Dendrimer Materials.- Excitonically Coupled Oligomers and Dendrimers for Two-Photon Absorption.