Anomaly in rotational diffusion of photophysical probe near volume phase transition of copoly(acrylamide-acrylic acid) gels: Steady state and time-resolved fluorescence study

Masahiko Annaka; Hiroyuki Takagi; Takayuki Nakahira

doi:10.1143/jjap.38.l1439

Anomaly in rotational diffusion of photophysical probe near volume phase transition of copoly(acrylamide-acrylic acid) gels: Steady state and time-resolved fluorescence study

Masahiko Annaka, Hiroyuki Takagi, Takayuki Nakahira

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

Changes in the microenvironment of pyrene-labeled copoly(acrylamide-acrylic acid) gels are investigated by means of fluorescence spectroscopy. An anomaly in the microscopic motion of a pyrenyl probe was observed in the vicinity of the phase transition: the average lifetime of monomer emission approached zero, and the rotational diffusion constant of pyrenyl probe became infinite. Density fluctuation and the nonequilibrium situation near the phase transition are considered to cause the rapid microscopic fluctuation of the network and solvent molecule.

Original language	English
Pages (from-to)	L1439-L1442
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	38
Issue number	12 A
DOIs	https://doi.org/10.1143/jjap.38.l1439
Publication status	Published - 1999
Externally published	Yes

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy (miscellaneous)
Physics and Astronomy(all)

Access to Document

10.1143/jjap.38.l1439

Fingerprint Dive into the research topics of 'Anomaly in rotational diffusion of photophysical probe near volume phase transition of copoly(acrylamide-acrylic acid) gels: Steady state and time-resolved fluorescence study'. Together they form a unique fingerprint.

Cite this

Anomaly in rotational diffusion of photophysical probe near volume phase transition of copoly(acrylamide-acrylic acid) gels : Steady state and time-resolved fluorescence study. / Annaka, Masahiko; Takagi, Hiroyuki; Nakahira, Takayuki.

In: Japanese Journal of Applied Physics, Part 2: Letters, Vol. 38, No. 12 A, 1999, p. L1439-L1442.

Research output: Contribution to journal › Article

@article{39f6b0fe92d247b092776c3d5db66067,

title = "Anomaly in rotational diffusion of photophysical probe near volume phase transition of copoly(acrylamide-acrylic acid) gels: Steady state and time-resolved fluorescence study",

abstract = "Changes in the microenvironment of pyrene-labeled copoly(acrylamide-acrylic acid) gels are investigated by means of fluorescence spectroscopy. An anomaly in the microscopic motion of a pyrenyl probe was observed in the vicinity of the phase transition: the average lifetime of monomer emission approached zero, and the rotational diffusion constant of pyrenyl probe became infinite. Density fluctuation and the nonequilibrium situation near the phase transition are considered to cause the rapid microscopic fluctuation of the network and solvent molecule.",

author = "Masahiko Annaka and Hiroyuki Takagi and Takayuki Nakahira",

year = "1999",

doi = "10.1143/jjap.38.l1439",

language = "English",

volume = "38",

pages = "L1439--L1442",

journal = "Japanese Journal of Applied Physics, Part 2: Letters",

issn = "0021-4922",

number = "12 A",

}

TY - JOUR

T1 - Anomaly in rotational diffusion of photophysical probe near volume phase transition of copoly(acrylamide-acrylic acid) gels

T2 - Steady state and time-resolved fluorescence study

AU - Annaka, Masahiko

AU - Takagi, Hiroyuki

AU - Nakahira, Takayuki

PY - 1999

Y1 - 1999

N2 - Changes in the microenvironment of pyrene-labeled copoly(acrylamide-acrylic acid) gels are investigated by means of fluorescence spectroscopy. An anomaly in the microscopic motion of a pyrenyl probe was observed in the vicinity of the phase transition: the average lifetime of monomer emission approached zero, and the rotational diffusion constant of pyrenyl probe became infinite. Density fluctuation and the nonequilibrium situation near the phase transition are considered to cause the rapid microscopic fluctuation of the network and solvent molecule.

AB - Changes in the microenvironment of pyrene-labeled copoly(acrylamide-acrylic acid) gels are investigated by means of fluorescence spectroscopy. An anomaly in the microscopic motion of a pyrenyl probe was observed in the vicinity of the phase transition: the average lifetime of monomer emission approached zero, and the rotational diffusion constant of pyrenyl probe became infinite. Density fluctuation and the nonequilibrium situation near the phase transition are considered to cause the rapid microscopic fluctuation of the network and solvent molecule.

UR - http://www.scopus.com/inward/record.url?scp=0033355190&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033355190&partnerID=8YFLogxK

U2 - 10.1143/jjap.38.l1439

DO - 10.1143/jjap.38.l1439

M3 - Article

AN - SCOPUS:0033355190

VL - 38

SP - L1439-L1442

JO - Japanese Journal of Applied Physics, Part 2: Letters

JF - Japanese Journal of Applied Physics, Part 2: Letters

SN - 0021-4922

IS - 12 A

ER -