Click Chemistry on Supramolecular Materials
Click Chemistry on Supramolecular Materials
复制标题
超分子材料的点击化学
DOI：
10.1002/9780470748862.ch7
复制
发表时间：
2009
影响因子：
1.3
通讯作者：
R. Sachsenhofer
中科院分区：
文献类型：
--
作者：
W. Binder;R. Sachsenhofer
A plethora of materials has been generated in the past decades, often built from molecules in highly defined configurations and conformations. Additionally, many modern functional materials rely on defined arrangement of molecular aggregates, in which the arrangement of molecules dictates the use of the underlying material, 1 thus putting supramolecular structure and ordering in the limelight. 2 Thus the use of optoelectronically active materials is strongly influenced by their arrangement in crystals or semicrystals, controlling bandoverlap or charge-transport. As examples, the ordering of sexithiophenes in solar-cell devices strongly influences their ability to harvest photons and convert them into excitons; the conjugation length of oligo-(phenylene-vinylenes) strongly influences their absorption spectrum and thus their use in organic-light emitting diods; push–pull liquid crystalline molecules are ordered into liquid-crystalline phases via dipole–dipole interactions, which can be switched by external electrical fields from one liquid crystalline phase into another, thus changing the reflection of light as required in LCDs. Similarly, materials for use in biochemical applications are strongly influenced by noncovalent bonds acting through space, making hydrogen bonds or dipolar interactions the main directing forces for the spatial arrangement of biochemical receptors (Figure 7.1). These examples demonstrate the close proximity of material science and supramolecular chemistry, 3 which are connected via the proper spatial and orientational positioning of intermolecular forces and interaction within molecular building blocks. Thus, often a molecular (= functional) scaffold needs to be oriented in space via appropriately affixed
