A Fluorescent and Phosphorescent Nanoporous Solid: Crystalline Calix[4]arene

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Issam Oueslati (Author) Other; Anthony W Coleman (Author) Other; Baltazar de Castro (Author) FCUP; Mario N Berberan Santos (Author) Other

Journal

Title: Journal of Fluorescence

Vol. 18

Pages: 1123-1129

ISSN: 1053-0509

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 10 Citations

Scopus - 6 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-003-V7B

DOI: 10.1007/s10895-008-0362-x

Abstract (EN): Calix[4]arene forms elongated nanoporous microcrystals. The pores are linear nano-channels (1.7 nm diameter) arranged in a honeycomb network. The crystals luminesce at room temperature according to a variety of processes that include monomer fluorescence (lifetime of ca. 1.1 ns), dimer fluorescence (lifetime of ca. 5.4 ns), and monomer phosphorescence (lifetime of ca. 2 s). The dimers result from pi-orbital overlap of adjacent phenol groups from neighboring nanochannels, with C-C distances of ca. 4 angstrom.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7