Large and highly stable photoinduced birefringence in poly( amideimide)s with two azochromophores per structural unit
PBN-AR
Instytucja
Centrum Materiałów Polimerowych i Węglowych Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Optical Materials
ISSN
0925-3467
EISSN
Wydawca
ELSEVIER SCIENCE BV
DOI
URL
Rok publikacji
2015
Numer zeszytu
Strony od-do
199-206
Numer tomu
39
Identyfikator DOI
Liczba arkuszy
Autorzy
Pozostali autorzy
+ 2
Słowa kluczowe
en
Azopolymers;
Polyimides;
Photoinduced birefringence;
Trans-cis isomerization;
Optical storage
en
REVERSIBLE OPTICAL STORAGE;
SURFACE-RELIEF GRATINGS;
AZO-DYES; AZOBENZENE UNITS;
SIDE-GROUPS;
POLYMERS;
ANISOTROPY;
FILMS;
POLY(ESTERIMIDE)S;
POLYIMIDES
Streszczenia
Język
en
Treść
We present a series of novel poly(amideimide)s containing two covalently bonded azobenzene chromophores in the polymer repeating unit. The chromophores possess different substituent in para position such as fluorine, hydroxyl, methyl or do not contain any of them. The synthesized polymers were characterized by H-1 NMR, FTIR spectroscopies and elemental analysis. The polymers showed high glass transition temperatures (250-280 degrees C), which were significantly separated from the temperatures of thermal decomposition (345-590 degrees C). The photoinduced birefringence measurements were performed for continuous wave irradiation at 405 am. A very large, as for polyimides, birefringence of 0.06 was observed with the growth dynamics dependent on the chromophore substituent. The generated birefringence exhibited an exceptionally low relaxation. Apart from the poly(amideimide) with the methyl substituent it decreased by only 1.5% just after switching off the excitation light, and maintained its level during the next 500 s. (C) 2014 Elsevier B.V. All rights reserved.
Cechy publikacji
oryginalny artykuł naukowy
Inne
System-identifier
PX-56b463548106eb71826e40ce
CrossrefMetadata from Crossref logo
Cytowania
Liczba prac cytujących tę pracę
Brak danych
Referencje
Liczba prac cytowanych przez tę pracę
Brak danych