Multiple wavelength optical recording using cyanine dye J aggregates in Langmuir–Blodgett films

Abstract

An optical storage technique based on the characteristic absorption bands of J aggregates of organic dyes is reported. The information is written by disordering the regular structures of cyanine dye J aggregates with a laser beam. This technique gives high recording sensitivity, and the disordered dye molecules can be made to reform the J aggregate, which indicates that the recording process is reversible. The J aggregates of cyanine dyes were formed by incorporating them in Langmuir–Blodgett (LB) films. The advantages of the narrow absorption bands of J aggregates and of the controlled multilayer forming capability of LB films were combined to demonstrate multiple wavelength optical recording using two recording layers.

Synthesis and characterization of a J-aggregating TDBC derivative in solution and in Langmuir–Blodgett films

“…J-aggregates of organic dyes continue to attract considerable interest as materials for optical storage [21,22], ultrafast optical switches [23,24], and applications of strong light-matter coupling [25][26][27], and as model systems of coherently delocalized excitons for studying light-harvesting complexes [28]. Traditionally, J-aggregates have been formed from cyanine dyes and porphyrins, though in recent years perylene-bisimide dyes have also been shown to J-aggregate [29].…”

Patterning of J-aggregated dyes using directed self-assembly on micro- and nanopatterned templates fabricated from phase-separated mixed Langmuir–Blodgett films

“…In particular, the structures and optical properties of J-aggregates of dyes have been investigated since the discovery of Jaggregates of cyanine dyes in concentrated solution [16,17]. Jaggregates have attracted much attention from the viewpoint of such applications as spectral sensitization [18], optical storage [19] and nonlinear optics [20]. Molecules in J-aggregates are arranged one-dimensionally or as in a brick-stone work.…”

“…(heptadecafluoro-1,1,2,2-tetrahydrodecyl)triethoxysilane C 8 F 17 C 2 H 4 Si(OC 2 H 5 ) 3 (F8H2SiOEt), (Heptadecafluoro-1,1,2,2-tetrahydrodecyl)trimethoxysilane C 8 F 17 C 2 H 4 Si(OCH 3 ) 3 (F8 H2SiOMe) and (heptadecafluoro-1,1,2,2-tetrahydrodecyl)trichlorosilane C 8 F 17 C 2 H 4 SiCl 3 (F8H2SiCl) were purchased from Gelest Inc 12,12,13,13,14,14,15,15,16,16,17,17,18,18,19,19. heptadecafluorononadecanoic acid C 8 F 17 C 10 H 20 COOH (F8H10A) were purchased…”

Über den Einfluss des Donor‐Teilchromophors bei Dimethinmerocyanin‐Farbstoffen auf das Aggregationsverhalten in wässriger Lösung

“…Kiirzlich wurde von der Firma Sony iiber eine mogliche Anwendung von J-Aggregaten als Datenspeicher berichtet, bei dem mit Hilfe eines Laserstrahls Daten gespeichert bzw. abgerufen werden konnen [23]. Daher wurde zunachst untersucht, inwieweit die Art des Donors die J-Aggregationstendenz von Merocyaninen, die sich vom Cyanoessigester-bzw .…”