Pode-se concluir que:
1. Os compostos de coordenação LaSDA e EuSDA foram sintetizados contendo o ligante ácido 4,4’-sulfonildibenzóico e íons lantanídeos (Lantânio e o Európio) pelo método de cristalização;
2. A análise pela espectroscopia de infravermelho dos compostos LaSDA e EuSDA sugere a ocorrência de coordenção do ligante SDA2- com os íons lantanídeos, e classifica os modos de coordenação do ligante do tipo ponte;
3. A difração de raios-X de monocristal do LaSDA revela a obtenção de um polímero de coordenação unidimensional;
4. O experimento de difração de raios-X de pó não se mostrou satisfatório, porém o mesmo sugere que os compostos EuSDA e LaSDA não possuem a mesma estrutura cristalina;
5. A espectroscopia de fotoluminescência relaciona a perda de cristalinidade do LaSDA em relação ao LaSDA* pelo alargamento da banda de excitação e deslocamento da banda emissão (Δbandas = 18 nm), que deve ser acarretado pela formação de novos domínios cristalinos no sólido com a remoção de DMF da estrutura;
6. O composto de coordenação EuSDA apresentou as transições intra-f6 típicas para o íon Eu3+ no seu espectro de excitação, com a presença da banda pouco pronunciada em = 313 nm , referente a transição ππ* do SDA2-
. O espectro de emissão mostra as transições 5D07FJ (onde, J = 0, 1, 2, 3 e 4). A presença da transição 5D07F0 indica que os grupos pontuais de simetria possíveis para o ambiente químico do Eu3+ neste sistema são C1, Cn, Cnv, Cs ou simetrias que se aproximemem destes grupos. A presença da transição 5D17FJ sugere que o sólido EuSDA é bastante rígido e possuem baixa frequência de fônons. A eficiência quântica de emissão apresentou um valor alto igual a η = 73,2%, para
um tempo de vida τ =1,47 ms, exibindo uma taxa não-radiativa Anrad =181,8 s-1 e uma taxa radiativa Anrad = 498,4 s-1;
7. O padrão de linhas dos espectros de emissão para os composto EuSDA e EuSDA* indicam a modificação significativa de simetria de um em relação ao outro quando o solvente é removido. Os valores para a razão entre as áreas integradas R(02/01) revelam que os compostos possuem uma baixa simetria para o ambiente químico do Eu3+.
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