naa a22 4500 510769942 CHVBK 20180411083210.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11837-013-0608-1 doi (NATIONALLICENCE)springer-10.1007/s11837-013-0608-1 Layer-by-Layer Enabled Nanomaterials for Chemical Sensing and Energy Conversion [Elektronische Daten] [Leonardo Paterno, Maria Soler] The layer-by-layer (LbL) technique is a wet chemical method for the assembly of ultrathin films, with thicknesses up to 100nm. This method is based on the successive transfer of molecular layers to a solid substrate that is dipped into cationic and anionic solutions in an alternating fashion. The adsorption is mainly driven by electrostatic interactions so that many molecular and nanomaterial systems can be engineered under this method. Moreover, it is inexpensive, can be easily performed, and does not demand sophisticated equipment or clean rooms. The most explored use of the LbL technique is to build up molecular devices for chemical sensing and energy conversion. Both applications require ultrathin films where specific elements must be organized with high control of thickness and spatial distribution, preferably in the nanolength and mesolength scales. In chemical sensors, the LbL technique is employed to assemble specific sensoactive materials such as conjugated polymers, enzymes, and immunological elements onto appropriated electrodes. Molecular recognition events are thus transduced by the assembled sensoactive layer. In energy-conversion devices, the LbL technique can be employed to fabricate different device's parts including electrodes, active layers, and auxiliary layers. In both applications, the devices' performance can be fully modulated and improved by simply varying film thickness and molecular architecture. The present review article highlights the main features of the LbL technique and provides a brief description of different (bio)chemical sensors, solar cells, and organic light-emitting diodes enabled by the LbL approach. TMS, 2013 Paterno Leonardo Instituto de Química, Universidade de Brasília, Campus Universitário Darcy Ribeiro, 70904-970, Brasília, DF, Brazil aut Soler Maria Instituto de Física, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Brasília, DF, Brazil aut JOM Springer US; http://www.springer-ny.com 65/6(2013-06-01), 709-719 1047-4838 65:6<709 2013 65 11837 https://doi.org/10.1007/s11837-013-0608-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11837-013-0608-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Paterno Leonardo Instituto de Química, Universidade de Brasília, Campus Universitário Darcy Ribeiro, 70904-970, Brasília, DF, Brazil aut NATIONALLICENCE 700 1- Soler Maria Instituto de Física, Universidade de Brasília, Campus Universitário Darcy Ribeiro, Brasília, DF, Brazil aut NATIONALLICENCE 773 0- JOM Springer US; http://www.springer-ny.com 65/6(2013-06-01), 709-719 1047-4838 65:6<709 2013 65 11837 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer