Enhanced emission and its switching in fluorescent organic nanoparticles

被引：1864

作者：

An, BK

Kwon, SK

Jung, SD

Park, SY ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South Korea

[2] Gyeongsang Natl Univ, Dept Polymer Sci & Engn, Chinju 660701, South Korea

[3] Elect & Telecommun Res Inst, Basic Res Lab, Taejon 305350, South Korea

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2002年 / 124卷 / 48期

关键词：

D O I：

10.1021/ja0269082

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new class of organic nanoparticles (CN-MBE nanoparticles) with a mean diameter of ca. 30-40 nm, which exhibit a strongly enhanced fluorescence emission, were prepared by a simple reprecipitation method. CN-MBE (1-cyano-trans-1,2-bis-(4'-methylbiphenyl)ethylene) is very weakly fluorescent in solution, but the intensity is increased by almost 700 times in the nanoparticles. Enhanced emission in CN-MBE nanoparticles is attributed to the synergetic effect of intramolecular planarization and J-type aggregate formation (restricted excimer formation) in nanopaticles. On/off fluorescence switching for organic vapor was demonstrated with CN-MBE nanoparticles.

引用

页码：14410 / 14415

页数：6

共 59 条

[1] Semiconductor clusters, nanocrystals, and quantum dots
Alivisatos, AP
[J]. SCIENCE, 1996, 271 (5251) : 933 - 937
[2] STRUCTURE AND BARRIER OF INTERNAL-ROTATION OF BIPHENYL DERIVATIVES IN THE GASEOUS STATE .1. THE MOLECULAR-STRUCTURE AND NORMAL COORDINATE ANALYSIS OF NORMAL BIPHENYL AND PERDEUTERATED BIPHENYL
ALMENNINGEN, A
BASTIANSEN, O
FERNHOLT, L
CYVIN, BN
CYVIN, SJ
SAMDAL, S
[J]. JOURNAL OF MOLECULAR STRUCTURE, 1985, 128 (1-3) : 59 - 76
[3] FIRST-PRINCIPLES STUDIES OF THE STRUCTURAL AND OPTICAL-PROPERTIES OF CRYSTALLINE POLY(PARA-PHENYLENE)
AMBROSCHDRAXL, C
MAJEWSKI, JA
VOGL, P
LEISING, G
[J]. PHYSICAL REVIEW B, 1995, 51 (15): : 9668 - 9676
[4] Auweter H, 1999, ANGEW CHEM INT EDIT, V38, P2188, DOI 10.1002/(SICI)1521-3773(19990802)38:15<2188::AID-ANIE2188>3.0.CO
[5] 2-#
[6] CRYSTAL-STRUCTURES, PHASE-TRANSITIONS AND ENERGY CALCULATIONS OF POLY(P-PHENYLENE) OLIGOMERS
BAKER, KN
FRATINI, AV
RESCH, T
KNACHEL, HC
ADAMS, WW
SOCCI, EP
FARMER, BL
[J]. POLYMER, 1993, 34 (08) : 1571 - 1587
[7] Excited-state quenching of a highly luminescent conjugated polymer
Belton, C
O'Brien, DF
Blau, WJ
Cadby, AJ
Lane, PA
Bradley, DDC
Byrne, HJ
Stockmann, R
Hörhold, HH
[J]. APPLIED PHYSICS LETTERS, 2001, 78 (08) : 1059 - 1061
[8] Berlman I.B., 1971, Handbook of Fluorescence Spectra of Aromatic Molecules
[9] HIGHLY CONDUCTING POLYPARAPHENYLENE, POLYPYRROLE, AND POLYTHIOPHENE CHAINS - AN ABINITIO STUDY OF THE GEOMETRY AND ELECTRONIC-STRUCTURE MODIFICATIONS UPON DOPING
BREDAS, JL
THEMANS, B
FRIPIAT, JG
ANDRE, JM
CHANCE, RR
[J]. PHYSICAL REVIEW B, 1984, 29 (12): : 6761 - 6773
[10] Semiconductor nanocrystals as fluorescent biological labels
Bruchez, M
Moronne, M
Gin, P
Weiss, S
Alivisatos, AP
[J]. SCIENCE, 1998, 281 (5385) : 2013 - 2016

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