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Titolo:
ELECTRONIC STATES OF SNI4 SINGLE-CRYSTALS AND ITS CLUSTERS INSERTED IN THE MOLECULAR VESSELS OF CYCLODEXTRINS
Autore:
OMARU M; TAKAHASHI S; OHNISHI A; YOSHINARI T; NAGASAKA S; KAMIKAWA T; GOTO T;
Indirizzi:
YAMAGATA UNIV,FAC SCI,DEPT PHYS KOJIRAKAWA YAMAGATA 990 JAPAN TOHOKU UNIV,GRAD SCH SCI,DEPT PHYS SENDAI MIYAGI 98077 JAPAN
Titolo Testata:
Journal of the Physical Society of Japan
fascicolo: 6, volume: 66, anno: 1997,
pagine: 1816 - 1821
SICI:
0031-9015(1997)66:6<1816:ESOSSA>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUANTUM;
Keywords:
QUANTUM SIZE EFFECT; TIN TETRAIODIDE; SNI4; CLUSTER; CYCLODEXTRIN; MOLECULAR CYLINDRICAL VESSEL; EXCITON ABSORPTION; OPTICAL REFLECTION SPECTRA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
8
Recensione:
Indirizzi per estratti:
Citazione:
M. Omaru et al., "ELECTRONIC STATES OF SNI4 SINGLE-CRYSTALS AND ITS CLUSTERS INSERTED IN THE MOLECULAR VESSELS OF CYCLODEXTRINS", Journal of the Physical Society of Japan, 66(6), 1997, pp. 1816-1821

Abstract

From the reflection spectra of SnI4 single crystal, the exciton absorption band has been observed at peak energies, 3.13 eV (1.6 K) and 3.07 eV (room temperature). The binding energy of the exciton is estimated to be 350 meV (1.6 K) assuming the hydrogen-like series for the exciton energy levels. The novel idea of using a cyclodextrin molecule as a size-controlling vessel to make a SnI4 cluster is proposed. The reflection spectra of SnI4 clusters inserted in alpha-, beta- and gamma-cyclodextrins were measured. The first exciton absorption peak of the clusters shifts to the higher energy by nearly 0.3 eV (1.6 K) and 0.4 eV(room temperature) compared with that of the single crystals. The shift is due to the quantum size effect.

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Documento generato il 30/11/20 alle ore 03:21:10