TY - JOUR

T1 - Spectral studies of niflumic acid aggregation in dissolved, solid and adsorbed states

AU - Baranov, Denis A.

AU - Vysotskaya, Sofia O.

AU - Zarochentseva, Elena P.

AU - Lisachenko, Dmitry A.

AU - Nosova, Daria A.

AU - Tsyganenko, Alexey A.

PY - 2019/11/5

Y1 - 2019/11/5

N2 - FTIR spectra of niflumic acid in solid state, dissolved in CCl4 and adsorbed on silica or alumina surface, as well as their temperature dependence, provide information about different stages of aggregation: monomers, dimers, amorphous and crystalline solid phase, as well as about perturbation of the molecule by the surface. The spectra observed are compared with those obtained by quantum mechanical calculations. The luminescence spectra are less sensitive to the aggregation, they differ mostly in the intensity, while the position of maximum at about 440 nm remains almost the same.

AB - FTIR spectra of niflumic acid in solid state, dissolved in CCl4 and adsorbed on silica or alumina surface, as well as their temperature dependence, provide information about different stages of aggregation: monomers, dimers, amorphous and crystalline solid phase, as well as about perturbation of the molecule by the surface. The spectra observed are compared with those obtained by quantum mechanical calculations. The luminescence spectra are less sensitive to the aggregation, they differ mostly in the intensity, while the position of maximum at about 440 nm remains almost the same.

KW - Aggregation

KW - FTIR spectroscopy

KW - Luminescence

KW - Niflumic acid

KW - Variable temperature

UR - http://www.scopus.com/inward/record.url?scp=85066500801&partnerID=8YFLogxK

U2 - 10.1016/j.saa.2019.117224

DO - 10.1016/j.saa.2019.117224

M3 - Article

C2 - 31176155

AN - SCOPUS:85066500801

VL - 222

JO - SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY

JF - SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY

SN - 1386-1425

M1 - 117224

ER -