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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Thermosensitive poly(N-vinylcaprolactam) as a transmission light regulator in smart windows

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Sala, Renata L. [1] ; Goncalves, Ricardo H. [1] ; Camargo, Emerson R. [1] ; Leite, Edson R. [1, 2]
Total Authors: 4
[1] Fed Univ Sao Carlos UFSCar, Dept Chem, Rod Washington Luis Km 235, BR-13565905 Sao Carlos, SP - Brazil
[2] CNPEM, Brazilian Nanotechnol Natl Lab LNNano, Rua Giusepe Maximo Scalfaro 10000, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: SOLAR ENERGY MATERIALS AND SOLAR CELLS; v. 186, p. 266-272, NOV 2018.
Web of Science Citations: 4

Upcoming generation of smart windows requires simple design, fast stimulus response and cost-effective production. Aiming these features, we reported a new approach of switchable devices based on the thermosensitive polymer poly(N-vinylcaprolactam) (PNVCL) and facile assembly of the components (FTO layers and polymer). Its optical/color change from transparent to opaque is temperature-dependent and activated by induced Joule heating of conductive substrates. Therefore, the reported devices showed fast reversible response (less than 60 s) by small input power and adjustable opaqueness according to polymer concentration. In opposite to traditional electrochromic smart windows dependence of the kinetics charge-transfer reaction, the observed features are triggered by the thermodynamic mechanism of the reversible coil-globule transition from PNVCL suspension, which can lead to stable performance of the proposed device. (AU)

FAPESP's process: 13/25663-2 - Development of Polymeric Nanocomposites Applicable to Tissue Engineering
Grantee:Renata Lang Sala
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
FAPESP's process: 15/13958-3 - Nanocomposite biomaterials based on thermoresponsive HIDROGELS
Grantee:Emerson Rodrigues de Camargo
Support Opportunities: Regular Research Grants