Diffusive spectra of antistokes wing of photoluminescence of carbon nanostructures
DOI:
https://doi.org/10.31489/2019No1/30-34Keywords:
carbon quantum dots, photoluminescence of carbon-containing objects, anti-Stokes radiation, photodissociation, dimeric-excimer modelAbstract
In paper the photoluminescence radiation with a wavelength shorter than the wavelength of the exciting light that usually have been called anti-Stokes, is studied. These features of photoluminescence were observed previously in such carbon-containing objects as amorphous hydrogenated carbon α-C: H and native biopolymer-collagen. The general structural property of these objects is the presence of carbon hexagons — the nuclei of the benzene ring. A dimer-excimer model of photoluminescence in carbon nanostructures was developed to explain the anti-Stokes wing of the spectra. The temperature dependence of the distribution function of thermally activated pre-excited states in carbon-containing objects is determined. The spectral dependence of the intensity of the anti-Stokes wing taking into account the density of states in the excimer well is calculated.
References
"1 Libin Tang, Rongbin Ji, Xiangke Cao, Jingyu Lin, Hongxing Jiang, Xueming Li, Kar Seng Teng, Chi Man Luk, Songjun Zeng, Jianhua Hao, and Shu Ping Lau. Deep ultraviolet photoluminescence of water-soluble self-passivated graphene quantum dots. ACS Nano, 2012, No. 6 (6), pp. 5102 – 5110.
Juan Peng, Wei Gao, Bipin Kumar Gupta, Zheng Liu, Rebeca Romero-Aburto, Liehui Ge, Li Song, Lawrence B. Alemany, Xiaobo Zhan, Guanhui Gao, Sajna Antony Vithayathil, Benny Abraham Kaipparettu, Angel A. Marti, Takuya Hayashi, Jun-Jie Zhu,and Pulickel M. Ajayan. Graphene quantum dots derived from carbon fibers. Nano Lett., 2012, No. 12 (2), pp. 844–849.
Mahasin Alam Sk, Arundithi Ananthanarayanan, Lin Huang, Kok Hwa Lim and Peng Chen. Revealing the tunable photoluminescence properties of graphene quantum dots. J. Mater. Chem., 2014, No.2, pp. 6954 – 6960.
Yonghun Shin, Jintaek Park, Daesun Hyun, Junghee Yang, Jae-Hyeok Lee, Jae-Ho Kim and Hyoyoung Lee. Acid-free and oxone oxidant-assisted solvothermal synthesis of graphene quantum dots using various natural carbon materials as resources. Proceeding of the Int. Conf. “Electronic Supplementary Material (ESI) for Nanoscale”, 2015, pp. 5633 – 5637.
Youfu Wang and Aiguo Hu. Carbon quantum dots: synthesis, properties and applications. J.Mater.Chem., 2014, No. 2, pp. 6921 – 6939.
Li F., Liu C.,Wang Z., Liu W. and Tian F. Mg/N double doping strategy to fabricate extremely high luminescent carbon dots for bioimaging. RSC Adv., 2014, No. 4, pp. 3201 – 3205.
Vasil’yev V.A., Volkov A.S., Musabekov E., Terukov E.I., Chernyshov S.V. Antistoksovskoye izlucheniye amorfnykh plenok ugleroda a-C:H. Fiz. Tverd. Tela, 1990, Vol. 32, No. 3, pp.784 – 788. [in Russian]
Volkov A.S., Kumekov S.E., Syrgaliev E.O., Chernyshov S.V. Polosa fotolyuminestsentsii i antistoksovo izlucheniye nativnogo kollagena v vidimoy oblasti spektra. Biofizika (Biophysics), 1991, Vol.36, No. 5, pp.770 – 773. [in Russian]
J. Guillet. Polymer photophysics and photochemistry. Cambridge University Press, Cambridge, 1985, 391 p.
Shpolsky E.V. Diffuse spectra and chemical problems. UFN, 1933, No. 8, pp. 325 - 366. [in Russian]
"
